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Bluetooth: ath3k: workaround the compatibility issue with xHCI controller
[linux-2.6-block.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
cda0dd78 31#define VERSION "0.7"
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
cda0dd78 53#define BTUSB_INTEL_NEW 0x2000
893ba544 54#define BTUSB_AMP 0x4000
5e23b923 55
54265202 56static const struct usb_device_id btusb_table[] = {
5e23b923
MH		 57 /* Generic Bluetooth USB device */
58 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
59
893ba544
MH		 60 /* Generic Bluetooth AMP device */
61 { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
62
1fa6535f
HR		 63 /* Apple-specific (Broadcom) devices */
64 { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
65
178c059e
CYC		 66 /* MediaTek MT76x0E */
67 { USB_DEVICE(0x0e8d, 0x763f) },
68
c510eae3 69 /* Broadcom SoftSailing reporting vendor specific */
2e8b5063 70 { USB_DEVICE(0x0a5c, 0x21e1) },
c510eae3 71
3cd01976
NI		 72 /* Apple MacBookPro 7,1 */
73 { USB_DEVICE(0x05ac, 0x8213) },
74
0a79f674
CL		 75 /* Apple iMac11,1 */
76 { USB_DEVICE(0x05ac, 0x8215) },
77
9c047157
NI		 78 /* Apple MacBookPro6,2 */
79 { USB_DEVICE(0x05ac, 0x8218) },
80
3e3ede7d
EH		 81 /* Apple MacBookAir3,1, MacBookAir3,2 */
82 { USB_DEVICE(0x05ac, 0x821b) },
83
a63b723d
PAVM		 84 /* Apple MacBookAir4,1 */
85 { USB_DEVICE(0x05ac, 0x821f) },
86
88d377b6
MAP		 87 /* Apple MacBookPro8,2 */
88 { USB_DEVICE(0x05ac, 0x821a) },
89
f78b6826
JK		 90 /* Apple MacMini5,1 */
91 { USB_DEVICE(0x05ac, 0x8281) },
92
cfeb4145 93 /* AVM BlueFRITZ! USB v2.0 */
4fcef8ed 94 { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
cfeb4145
MH		 95
96 /* Bluetooth Ultraport Module from IBM */
97 { USB_DEVICE(0x04bf, 0x030a) },
98
99 /* ALPS Modules with non-standard id */
100 { USB_DEVICE(0x044e, 0x3001) },
101 { USB_DEVICE(0x044e, 0x3002) },
102
103 /* Ericsson with non-standard id */
104 { USB_DEVICE(0x0bdb, 0x1002) },
105
106 /* Canyon CN-BTU1 with HID interfaces */
7a9d4020 107 { USB_DEVICE(0x0c10, 0x0000) },
cfeb4145 108
d13431ca 109 /* Broadcom BCM20702A0 */
0b880062
AS		 110 { USB_DEVICE(0x0489, 0xe042) },
111 { USB_DEVICE(0x04ca, 0x2003) },
1ee3ff61 112 { USB_DEVICE(0x0b05, 0x17b5) },
38a172be 113 { USB_DEVICE(0x0b05, 0x17cb) },
d13431ca 114 { USB_DEVICE(0x413c, 0x8197) },
a86c02ea
F		 115 { USB_DEVICE(0x13d3, 0x3404),
116 .driver_info = BTUSB_BCM_PATCHRAM },
d13431ca 117
d049f4e5
MH		 118 /* Broadcom BCM20702B0 (Dynex/Insignia) */
119 { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
120
98514036 121 /* Foxconn - Hon Hai */
6029ddc2
HS		 122 { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
123 .driver_info = BTUSB_BCM_PATCHRAM },
98514036 124
0b880062 125 /* Broadcom devices with vendor specific id */
10d4c673
PG		 126 { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
127 .driver_info = BTUSB_BCM_PATCHRAM },
92c385f4 128
c2aef6e8 129 /* ASUSTek Computer - Broadcom based */
9a5abdaa
RD		 130 { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
131 .driver_info = BTUSB_BCM_PATCHRAM },
c2aef6e8 132
5bcecf32
KB		 133 /* Belkin F8065bf - Broadcom based */
134 { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) },
135
9113bfd8
JK		 136 /* IMC Networks - Broadcom based */
137 { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01) },
138
40df783d 139 /* Intel Bluetooth USB Bootloader (RAM module) */
d92f2df0
MH		 140 { USB_DEVICE(0x8087, 0x0a5a),
141 .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
40df783d 142
5e23b923
MH		 143 { } /* Terminating entry */
144};
145
146MODULE_DEVICE_TABLE(usb, btusb_table);
147
54265202 148static const struct usb_device_id blacklist_table[] = {
cfeb4145
MH		 149 /* CSR BlueCore devices */
150 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
151
152 /* Broadcom BCM2033 without firmware */
153 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
154
be93112a 155 /* Atheros 3011 with sflash firmware */
0b880062
AS		 156 { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
157 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
158 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
be93112a 159 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
6eda541d 160 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
2a7bcccc 161 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
be93112a 162
509e7861
CYC		 163 /* Atheros AR9285 Malbec with sflash firmware */
164 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
165
d9f51b51 166 /* Atheros 3012 with sflash firmware */
0b880062
AS		 167 { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
168 { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
169 { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
170 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
171 { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
4b552bc9 172 { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
0b880062
AS		 173 { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
174 { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
175 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
176 { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
1fb4e09a 177 { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
0b880062
AS		 178 { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
179 { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
134d3b35 180 { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
0b880062
AS		 181 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
182 { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
89d2975f 183 { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
a735f9e2 184 { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
d66629c1 185 { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
2d25f8b4 186 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
94a32d10 187 { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
07c0ea87 188 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
b131237c 189 { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
1e56f1eb 190 { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
0b880062 191 { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
ebaf5795 192 { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
0b880062 193 { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
ac71311e 194 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
0a3658cc 195 { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
0b880062
AS		 196 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
197 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
eed307e2 198 { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
5b77a1f3 199 { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
3bb30a7c 200 { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
033efa92 201 { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
fa2f1394 202 { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
d9f51b51 203
e9036e33
CYC		 204 /* Atheros AR5BBU12 with sflash firmware */
205 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
206
85d59726 207 /* Atheros AR5BBU12 with sflash firmware */
bc21fde2 208 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
0b880062 209 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
85d59726 210
cfeb4145 211 /* Broadcom BCM2035 */
7a9d4020 212 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
0b880062
AS		 213 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
214 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
cfeb4145
MH		 215
216 /* Broadcom BCM2045 */
7a9d4020
MH		 217 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
218 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
bdbef3d6 219
cfeb4145 220 /* IBM/Lenovo ThinkPad with Broadcom chip */
7a9d4020
MH		 221 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
222 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
cfeb4145
MH		 223
224 /* HP laptop with Broadcom chip */
7a9d4020 225 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
cfeb4145
MH		 226
227 /* Dell laptop with Broadcom chip */
7a9d4020 228 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
cfeb4145 229
5ddd4a60 230 /* Dell Wireless 370 and 410 devices */
7a9d4020 231 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
5ddd4a60 232 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
cfeb4145 233
7a9d4020
MH		 234 /* Belkin F8T012 and F8T013 devices */
235 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
236 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
cfeb4145 237
5ddd4a60
MH		 238 /* Asus WL-BTD202 device */
239 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
240
241 /* Kensington Bluetooth USB adapter */
242 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
243
cfeb4145
MH		 244 /* RTX Telecom based adapters with buggy SCO support */
245 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
246 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
247
248 /* CONWISE Technology based adapters with buggy SCO support */
249 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
250
4fcef8ed
MH		 251 /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
252 { USB_DEVICE(0x1300, 0x0001), .driver_info = BTUSB_SWAVE },
253
cfeb4145
MH		 254 /* Digianswer devices */
255 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
256 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
257
258 /* CSR BlueCore Bluetooth Sniffer */
4f64fa80
MH		 259 { USB_DEVICE(0x0a12, 0x0002),
260 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
cfeb4145
MH		 261
262 /* Frontline ComProbe Bluetooth Sniffer */
4f64fa80
MH		 263 { USB_DEVICE(0x16d3, 0x0002),
264 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
cfeb4145 265
cb1ee89f
MH		 266 /* Marvell Bluetooth devices */
267 { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
268 { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
269
d0ac9eb7 270 /* Intel Bluetooth devices */
dffd30ee 271 { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
ef4e5e4a 272 { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
cda0dd78 273 { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
dffd30ee 274
d0ac9eb7
MH		 275 /* Other Intel Bluetooth devices */
276 { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
277 .driver_info = BTUSB_IGNORE },
ae8df494 278
5e23b923
MH		 279 { } /* Terminating entry */
280};
281
9bfa35fe
MH		 282#define BTUSB_MAX_ISOC_FRAMES 10
283
5e23b923
MH		 284#define BTUSB_INTR_RUNNING 0
285#define BTUSB_BULK_RUNNING 1
9bfa35fe 286#define BTUSB_ISOC_RUNNING 2
7bee549e 287#define BTUSB_SUSPENDING 3
08b8b6c4 288#define BTUSB_DID_ISO_RESUME 4
cda0dd78
MH		 289#define BTUSB_BOOTLOADER 5
290#define BTUSB_DOWNLOADING 6
ce6bb929 291#define BTUSB_FIRMWARE_LOADED 7
cda0dd78 292#define BTUSB_FIRMWARE_FAILED 8
ce6bb929 293#define BTUSB_BOOTING 9
5e23b923
MH		 294
295struct btusb_data {
296 struct hci_dev *hdev;
297 struct usb_device *udev;
5fbcd260 298 struct usb_interface *intf;
9bfa35fe 299 struct usb_interface *isoc;
5e23b923 300
5e23b923
MH		 301 unsigned long flags;
302
303 struct work_struct work;
7bee549e 304 struct work_struct waker;
5e23b923 305
803b5836 306 struct usb_anchor deferred;
5e23b923 307 struct usb_anchor tx_anchor;
803b5836
MH		 308 int tx_in_flight;
309 spinlock_t txlock;
310
5e23b923
MH		 311 struct usb_anchor intr_anchor;
312 struct usb_anchor bulk_anchor;
9bfa35fe 313 struct usb_anchor isoc_anchor;
803b5836
MH		 314 spinlock_t rxlock;
315
316 struct sk_buff *evt_skb;
317 struct sk_buff *acl_skb;
318 struct sk_buff *sco_skb;
5e23b923
MH		 319
320 struct usb_endpoint_descriptor *intr_ep;
321 struct usb_endpoint_descriptor *bulk_tx_ep;
322 struct usb_endpoint_descriptor *bulk_rx_ep;
9bfa35fe
MH		 323 struct usb_endpoint_descriptor *isoc_tx_ep;
324 struct usb_endpoint_descriptor *isoc_rx_ep;
325
7a9d4020 326 __u8 cmdreq_type;
893ba544 327 __u8 cmdreq;
7a9d4020 328
43c2e57f 329 unsigned int sco_num;
9bfa35fe 330 int isoc_altsetting;
6a88adf2 331 int suspend_count;
2cbd3f5c 332
97307f51 333 int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
2cbd3f5c 334 int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
5e23b923
MH		 335};
336
803b5836
MH		 337static inline void btusb_free_frags(struct btusb_data *data)
338{
339 unsigned long flags;
340
341 spin_lock_irqsave(&data->rxlock, flags);
342
343 kfree_skb(data->evt_skb);
344 data->evt_skb = NULL;
345
346 kfree_skb(data->acl_skb);
347 data->acl_skb = NULL;
348
349 kfree_skb(data->sco_skb);
350 data->sco_skb = NULL;
351
352 spin_unlock_irqrestore(&data->rxlock, flags);
353}
354
1ffa4ad0
MH		 355static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
356{
803b5836
MH		 357 struct sk_buff *skb;
358 int err = 0;
359
360 spin_lock(&data->rxlock);
361 skb = data->evt_skb;
362
363 while (count) {
364 int len;
365
366 if (!skb) {
367 skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
368 if (!skb) {
369 err = -ENOMEM;
370 break;
371 }
372
373 bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
374 bt_cb(skb)->expect = HCI_EVENT_HDR_SIZE;
375 }
376
377 len = min_t(uint, bt_cb(skb)->expect, count);
378 memcpy(skb_put(skb, len), buffer, len);
379
380 count -= len;
381 buffer += len;
382 bt_cb(skb)->expect -= len;
383
384 if (skb->len == HCI_EVENT_HDR_SIZE) {
385 /* Complete event header */
386 bt_cb(skb)->expect = hci_event_hdr(skb)->plen;
387
388 if (skb_tailroom(skb) < bt_cb(skb)->expect) {
389 kfree_skb(skb);
390 skb = NULL;
391
392 err = -EILSEQ;
393 break;
394 }
395 }
396
397 if (bt_cb(skb)->expect == 0) {
398 /* Complete frame */
97307f51 399 data->recv_event(data->hdev, skb);
803b5836
MH		 400 skb = NULL;
401 }
402 }
403
404 data->evt_skb = skb;
405 spin_unlock(&data->rxlock);
406
407 return err;
1ffa4ad0
MH		 408}
409
410static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
411{
803b5836
MH		 412 struct sk_buff *skb;
413 int err = 0;
414
415 spin_lock(&data->rxlock);
416 skb = data->acl_skb;
417
418 while (count) {
419 int len;
420
421 if (!skb) {
422 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
423 if (!skb) {
424 err = -ENOMEM;
425 break;
426 }
427
428 bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT;
429 bt_cb(skb)->expect = HCI_ACL_HDR_SIZE;
430 }
431
432 len = min_t(uint, bt_cb(skb)->expect, count);
433 memcpy(skb_put(skb, len), buffer, len);
434
435 count -= len;
436 buffer += len;
437 bt_cb(skb)->expect -= len;
438
439 if (skb->len == HCI_ACL_HDR_SIZE) {
440 __le16 dlen = hci_acl_hdr(skb)->dlen;
441
442 /* Complete ACL header */
443 bt_cb(skb)->expect = __le16_to_cpu(dlen);
444
445 if (skb_tailroom(skb) < bt_cb(skb)->expect) {
446 kfree_skb(skb);
447 skb = NULL;
448
449 err = -EILSEQ;
450 break;
451 }
452 }
453
454 if (bt_cb(skb)->expect == 0) {
455 /* Complete frame */
456 hci_recv_frame(data->hdev, skb);
457 skb = NULL;
458 }
459 }
460
461 data->acl_skb = skb;
462 spin_unlock(&data->rxlock);
463
464 return err;
1ffa4ad0
MH		 465}
466
467static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
468{
803b5836
MH		 469 struct sk_buff *skb;
470 int err = 0;
471
472 spin_lock(&data->rxlock);
473 skb = data->sco_skb;
474
475 while (count) {
476 int len;
477
478 if (!skb) {
479 skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
480 if (!skb) {
481 err = -ENOMEM;
482 break;
483 }
484
485 bt_cb(skb)->pkt_type = HCI_SCODATA_PKT;
486 bt_cb(skb)->expect = HCI_SCO_HDR_SIZE;
487 }
488
489 len = min_t(uint, bt_cb(skb)->expect, count);
490 memcpy(skb_put(skb, len), buffer, len);
491
492 count -= len;
493 buffer += len;
494 bt_cb(skb)->expect -= len;
495
496 if (skb->len == HCI_SCO_HDR_SIZE) {
497 /* Complete SCO header */
498 bt_cb(skb)->expect = hci_sco_hdr(skb)->dlen;
499
500 if (skb_tailroom(skb) < bt_cb(skb)->expect) {
501 kfree_skb(skb);
502 skb = NULL;
503
504 err = -EILSEQ;
505 break;
506 }
507 }
508
509 if (bt_cb(skb)->expect == 0) {
510 /* Complete frame */
511 hci_recv_frame(data->hdev, skb);
512 skb = NULL;
513 }
514 }
515
516 data->sco_skb = skb;
517 spin_unlock(&data->rxlock);
518
519 return err;
1ffa4ad0
MH		 520}
521
5e23b923
MH		 522static void btusb_intr_complete(struct urb *urb)
523{
524 struct hci_dev *hdev = urb->context;
155961e8 525 struct btusb_data *data = hci_get_drvdata(hdev);
5e23b923
MH		 526 int err;
527
89e7533d
MH		 528 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
529 urb->actual_length);
5e23b923
MH		 530
531 if (!test_bit(HCI_RUNNING, &hdev->flags))
532 return;
533
534 if (urb->status == 0) {
9bfa35fe
MH		 535 hdev->stat.byte_rx += urb->actual_length;
536
1ffa4ad0
MH		 537 if (btusb_recv_intr(data, urb->transfer_buffer,
538 urb->actual_length) < 0) {
5e23b923
MH		 539 BT_ERR("%s corrupted event packet", hdev->name);
540 hdev->stat.err_rx++;
541 }
85560c4a
CC		 542 } else if (urb->status == -ENOENT) {
543 /* Avoid suspend failed when usb_kill_urb */
544 return;
5e23b923
MH		 545 }
546
547 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
548 return;
549
7bee549e 550 usb_mark_last_busy(data->udev);
5e23b923
MH		 551 usb_anchor_urb(urb, &data->intr_anchor);
552
553 err = usb_submit_urb(urb, GFP_ATOMIC);
554 if (err < 0) {
4935f1c1
PB		 555 /* -EPERM: urb is being killed;
556 * -ENODEV: device got disconnected */
557 if (err != -EPERM && err != -ENODEV)
61faddf6 558 BT_ERR("%s urb %p failed to resubmit (%d)",
89e7533d 559 hdev->name, urb, -err);
5e23b923
MH		 560 usb_unanchor_urb(urb);
561 }
562}
563
2eda66f4 564static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
5e23b923 565{
155961e8 566 struct btusb_data *data = hci_get_drvdata(hdev);
5e23b923
MH		 567 struct urb *urb;
568 unsigned char *buf;
569 unsigned int pipe;
570 int err, size;
571
572 BT_DBG("%s", hdev->name);
573
9bfa35fe
MH		 574 if (!data->intr_ep)
575 return -ENODEV;
576
2eda66f4 577 urb = usb_alloc_urb(0, mem_flags);
5e23b923
MH		 578 if (!urb)
579 return -ENOMEM;
580
581 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
582
2eda66f4 583 buf = kmalloc(size, mem_flags);
5e23b923
MH		 584 if (!buf) {
585 usb_free_urb(urb);
586 return -ENOMEM;
587 }
588
589 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
590
591 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
89e7533d 592 btusb_intr_complete, hdev, data->intr_ep->bInterval);
5e23b923
MH		 593
594 urb->transfer_flags |= URB_FREE_BUFFER;
595
596 usb_anchor_urb(urb, &data->intr_anchor);
597
2eda66f4 598 err = usb_submit_urb(urb, mem_flags);
5e23b923 599 if (err < 0) {
d4b8d1c9
PB		 600 if (err != -EPERM && err != -ENODEV)
601 BT_ERR("%s urb %p submission failed (%d)",
89e7533d 602 hdev->name, urb, -err);
5e23b923 603 usb_unanchor_urb(urb);
5e23b923
MH		 604 }
605
606 usb_free_urb(urb);
607
608 return err;
609}
610
611static void btusb_bulk_complete(struct urb *urb)
612{
613 struct hci_dev *hdev = urb->context;
155961e8 614 struct btusb_data *data = hci_get_drvdata(hdev);
5e23b923
MH		 615 int err;
616
89e7533d
MH		 617 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
618 urb->actual_length);
5e23b923
MH		 619
620 if (!test_bit(HCI_RUNNING, &hdev->flags))
621 return;
622
623 if (urb->status == 0) {
9bfa35fe
MH		 624 hdev->stat.byte_rx += urb->actual_length;
625
2cbd3f5c 626 if (data->recv_bulk(data, urb->transfer_buffer,
1ffa4ad0 627 urb->actual_length) < 0) {
5e23b923
MH		 628 BT_ERR("%s corrupted ACL packet", hdev->name);
629 hdev->stat.err_rx++;
630 }
85560c4a
CC		 631 } else if (urb->status == -ENOENT) {
632 /* Avoid suspend failed when usb_kill_urb */
633 return;
5e23b923
MH		 634 }
635
636 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
637 return;
638
639 usb_anchor_urb(urb, &data->bulk_anchor);
652fd781 640 usb_mark_last_busy(data->udev);
5e23b923
MH		 641
642 err = usb_submit_urb(urb, GFP_ATOMIC);
643 if (err < 0) {
4935f1c1
PB		 644 /* -EPERM: urb is being killed;
645 * -ENODEV: device got disconnected */
646 if (err != -EPERM && err != -ENODEV)
61faddf6 647 BT_ERR("%s urb %p failed to resubmit (%d)",
89e7533d 648 hdev->name, urb, -err);
5e23b923
MH		 649 usb_unanchor_urb(urb);
650 }
651}
652
2eda66f4 653static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
5e23b923 654{
155961e8 655 struct btusb_data *data = hci_get_drvdata(hdev);
5e23b923
MH		 656 struct urb *urb;
657 unsigned char *buf;
658 unsigned int pipe;
290ba200 659 int err, size = HCI_MAX_FRAME_SIZE;
5e23b923
MH		 660
661 BT_DBG("%s", hdev->name);
662
9bfa35fe
MH		 663 if (!data->bulk_rx_ep)
664 return -ENODEV;
665
2eda66f4 666 urb = usb_alloc_urb(0, mem_flags);
5e23b923
MH		 667 if (!urb)
668 return -ENOMEM;
669
2eda66f4 670 buf = kmalloc(size, mem_flags);
5e23b923
MH		 671 if (!buf) {
672 usb_free_urb(urb);
673 return -ENOMEM;
674 }
675
676 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
677
89e7533d
MH		 678 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
679 btusb_bulk_complete, hdev);
5e23b923
MH		 680
681 urb->transfer_flags |= URB_FREE_BUFFER;
682
7bee549e 683 usb_mark_last_busy(data->udev);
5e23b923
MH		 684 usb_anchor_urb(urb, &data->bulk_anchor);
685
2eda66f4 686 err = usb_submit_urb(urb, mem_flags);
5e23b923 687 if (err < 0) {
d4b8d1c9
PB		 688 if (err != -EPERM && err != -ENODEV)
689 BT_ERR("%s urb %p submission failed (%d)",
89e7533d 690 hdev->name, urb, -err);
5e23b923 691 usb_unanchor_urb(urb);
5e23b923
MH		 692 }
693
694 usb_free_urb(urb);
695
696 return err;
697}
698
9bfa35fe
MH		 699static void btusb_isoc_complete(struct urb *urb)
700{
701 struct hci_dev *hdev = urb->context;
155961e8 702 struct btusb_data *data = hci_get_drvdata(hdev);
9bfa35fe
MH		 703 int i, err;
704
89e7533d
MH		 705 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
706 urb->actual_length);
9bfa35fe
MH		 707
708 if (!test_bit(HCI_RUNNING, &hdev->flags))
709 return;
710
711 if (urb->status == 0) {
712 for (i = 0; i < urb->number_of_packets; i++) {
713 unsigned int offset = urb->iso_frame_desc[i].offset;
714 unsigned int length = urb->iso_frame_desc[i].actual_length;
715
716 if (urb->iso_frame_desc[i].status)
717 continue;
718
719 hdev->stat.byte_rx += length;
720
1ffa4ad0
MH		 721 if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
722 length) < 0) {
9bfa35fe
MH		 723 BT_ERR("%s corrupted SCO packet", hdev->name);
724 hdev->stat.err_rx++;
725 }
726 }
85560c4a
CC		 727 } else if (urb->status == -ENOENT) {
728 /* Avoid suspend failed when usb_kill_urb */
729 return;
9bfa35fe
MH		 730 }
731
732 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
733 return;
734
735 usb_anchor_urb(urb, &data->isoc_anchor);
736
737 err = usb_submit_urb(urb, GFP_ATOMIC);
738 if (err < 0) {
4935f1c1
PB		 739 /* -EPERM: urb is being killed;
740 * -ENODEV: device got disconnected */
741 if (err != -EPERM && err != -ENODEV)
61faddf6 742 BT_ERR("%s urb %p failed to resubmit (%d)",
89e7533d 743 hdev->name, urb, -err);
9bfa35fe
MH		 744 usb_unanchor_urb(urb);
745 }
746}
747
42b16b3f 748static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
9bfa35fe
MH		 749{
750 int i, offset = 0;
751
752 BT_DBG("len %d mtu %d", len, mtu);
753
754 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
755 i++, offset += mtu, len -= mtu) {
756 urb->iso_frame_desc[i].offset = offset;
757 urb->iso_frame_desc[i].length = mtu;
758 }
759
760 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
761 urb->iso_frame_desc[i].offset = offset;
762 urb->iso_frame_desc[i].length = len;
763 i++;
764 }
765
766 urb->number_of_packets = i;
767}
768
2eda66f4 769static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
9bfa35fe 770{
155961e8 771 struct btusb_data *data = hci_get_drvdata(hdev);
9bfa35fe
MH		 772 struct urb *urb;
773 unsigned char *buf;
774 unsigned int pipe;
775 int err, size;
776
777 BT_DBG("%s", hdev->name);
778
779 if (!data->isoc_rx_ep)
780 return -ENODEV;
781
2eda66f4 782 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
9bfa35fe
MH		 783 if (!urb)
784 return -ENOMEM;
785
786 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
787 BTUSB_MAX_ISOC_FRAMES;
788
2eda66f4 789 buf = kmalloc(size, mem_flags);
9bfa35fe
MH		 790 if (!buf) {
791 usb_free_urb(urb);
792 return -ENOMEM;
793 }
794
795 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
796
fa0fb93f 797 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
89e7533d 798 hdev, data->isoc_rx_ep->bInterval);
9bfa35fe 799
89e7533d 800 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
9bfa35fe
MH		 801
802 __fill_isoc_descriptor(urb, size,
89e7533d 803 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
9bfa35fe
MH		 804
805 usb_anchor_urb(urb, &data->isoc_anchor);
806
2eda66f4 807 err = usb_submit_urb(urb, mem_flags);
9bfa35fe 808 if (err < 0) {
d4b8d1c9
PB		 809 if (err != -EPERM && err != -ENODEV)
810 BT_ERR("%s urb %p submission failed (%d)",
89e7533d 811 hdev->name, urb, -err);
9bfa35fe 812 usb_unanchor_urb(urb);
9bfa35fe
MH		 813 }
814
815 usb_free_urb(urb);
816
817 return err;
818}
819
5e23b923 820static void btusb_tx_complete(struct urb *urb)
7bee549e
ON		 821{
822 struct sk_buff *skb = urb->context;
89e7533d 823 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
155961e8 824 struct btusb_data *data = hci_get_drvdata(hdev);
7bee549e 825
89e7533d
MH		 826 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
827 urb->actual_length);
7bee549e
ON		 828
829 if (!test_bit(HCI_RUNNING, &hdev->flags))
830 goto done;
831
832 if (!urb->status)
833 hdev->stat.byte_tx += urb->transfer_buffer_length;
834 else
835 hdev->stat.err_tx++;
836
837done:
838 spin_lock(&data->txlock);
839 data->tx_in_flight--;
840 spin_unlock(&data->txlock);
841
842 kfree(urb->setup_packet);
843
844 kfree_skb(skb);
845}
846
847static void btusb_isoc_tx_complete(struct urb *urb)
5e23b923
MH		 848{
849 struct sk_buff *skb = urb->context;
89e7533d 850 struct hci_dev *hdev = (struct hci_dev *)skb->dev;
5e23b923 851
89e7533d
MH		 852 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
853 urb->actual_length);
5e23b923
MH		 854
855 if (!test_bit(HCI_RUNNING, &hdev->flags))
856 goto done;
857
858 if (!urb->status)
859 hdev->stat.byte_tx += urb->transfer_buffer_length;
860 else
861 hdev->stat.err_tx++;
862
863done:
864 kfree(urb->setup_packet);
865
866 kfree_skb(skb);
867}
868
869static int btusb_open(struct hci_dev *hdev)
870{
155961e8 871 struct btusb_data *data = hci_get_drvdata(hdev);
5e23b923
MH		 872 int err;
873
874 BT_DBG("%s", hdev->name);
875
7bee549e
ON		 876 err = usb_autopm_get_interface(data->intf);
877 if (err < 0)
878 return err;
879
880 data->intf->needs_remote_wakeup = 1;
881
5e23b923 882 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
7bee549e 883 goto done;
5e23b923
MH		 884
885 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
7bee549e 886 goto done;
5e23b923 887
2eda66f4 888 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
43c2e57f
MH		 889 if (err < 0)
890 goto failed;
891
892 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
5e23b923 893 if (err < 0) {
43c2e57f
MH		 894 usb_kill_anchored_urbs(&data->intr_anchor);
895 goto failed;
5e23b923
MH		 896 }
897
43c2e57f
MH		 898 set_bit(BTUSB_BULK_RUNNING, &data->flags);
899 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
900
7bee549e
ON		 901done:
902 usb_autopm_put_interface(data->intf);
43c2e57f
MH		 903 return 0;
904
905failed:
906 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
907 clear_bit(HCI_RUNNING, &hdev->flags);
7bee549e 908 usb_autopm_put_interface(data->intf);
5e23b923
MH		 909 return err;
910}
911
7bee549e
ON		 912static void btusb_stop_traffic(struct btusb_data *data)
913{
914 usb_kill_anchored_urbs(&data->intr_anchor);
915 usb_kill_anchored_urbs(&data->bulk_anchor);
916 usb_kill_anchored_urbs(&data->isoc_anchor);
917}
918
5e23b923
MH		 919static int btusb_close(struct hci_dev *hdev)
920{
155961e8 921 struct btusb_data *data = hci_get_drvdata(hdev);
7bee549e 922 int err;
5e23b923
MH		 923
924 BT_DBG("%s", hdev->name);
925
926 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
927 return 0;
928
e8c3c3d2 929 cancel_work_sync(&data->work);
404291ac 930 cancel_work_sync(&data->waker);
e8c3c3d2 931
9bfa35fe 932 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
5e23b923 933 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
5e23b923 934 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
7bee549e
ON		 935
936 btusb_stop_traffic(data);
803b5836
MH		 937 btusb_free_frags(data);
938
7bee549e
ON		 939 err = usb_autopm_get_interface(data->intf);
940 if (err < 0)
7b8e2c1d 941 goto failed;
7bee549e
ON		 942
943 data->intf->needs_remote_wakeup = 0;
944 usb_autopm_put_interface(data->intf);
5e23b923 945
7b8e2c1d
ON		 946failed:
947 usb_scuttle_anchored_urbs(&data->deferred);
5e23b923
MH		 948 return 0;
949}
950
951static int btusb_flush(struct hci_dev *hdev)
952{
155961e8 953 struct btusb_data *data = hci_get_drvdata(hdev);
5e23b923
MH		 954
955 BT_DBG("%s", hdev->name);
956
957 usb_kill_anchored_urbs(&data->tx_anchor);
803b5836 958 btusb_free_frags(data);
5e23b923
MH		 959
960 return 0;
961}
962
047b2ec8 963static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
5e23b923 964{
155961e8 965 struct btusb_data *data = hci_get_drvdata(hdev);
5e23b923
MH		 966 struct usb_ctrlrequest *dr;
967 struct urb *urb;
968 unsigned int pipe;
5e23b923 969
047b2ec8
MH		 970 urb = usb_alloc_urb(0, GFP_KERNEL);
971 if (!urb)
972 return ERR_PTR(-ENOMEM);
5e23b923 973
047b2ec8
MH		 974 dr = kmalloc(sizeof(*dr), GFP_KERNEL);
975 if (!dr) {
976 usb_free_urb(urb);
977 return ERR_PTR(-ENOMEM);
978 }
5e23b923 979
047b2ec8 980 dr->bRequestType = data->cmdreq_type;
893ba544 981 dr->bRequest = data->cmdreq;
047b2ec8
MH		 982 dr->wIndex = 0;
983 dr->wValue = 0;
984 dr->wLength = __cpu_to_le16(skb->len);
7bd8f09f 985
047b2ec8 986 pipe = usb_sndctrlpipe(data->udev, 0x00);
5e23b923 987
89e7533d 988 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
047b2ec8 989 skb->data, skb->len, btusb_tx_complete, skb);
5e23b923 990
89e7533d 991 skb->dev = (void *)hdev;
5e23b923 992
047b2ec8
MH		 993 return urb;
994}
5e23b923 995
047b2ec8
MH		 996static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
997{
998 struct btusb_data *data = hci_get_drvdata(hdev);
999 struct urb *urb;
1000 unsigned int pipe;
5e23b923 1001
047b2ec8
MH		 1002 if (!data->bulk_tx_ep)
1003 return ERR_PTR(-ENODEV);
9bfa35fe 1004
047b2ec8
MH		 1005 urb = usb_alloc_urb(0, GFP_KERNEL);
1006 if (!urb)
1007 return ERR_PTR(-ENOMEM);
5e23b923 1008
047b2ec8 1009 pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
5e23b923 1010
047b2ec8
MH		 1011 usb_fill_bulk_urb(urb, data->udev, pipe,
1012 skb->data, skb->len, btusb_tx_complete, skb);
5e23b923 1013
89e7533d 1014 skb->dev = (void *)hdev;
5e23b923 1015
047b2ec8
MH		 1016 return urb;
1017}
9bfa35fe 1018
047b2ec8
MH		 1019static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1020{
1021 struct btusb_data *data = hci_get_drvdata(hdev);
1022 struct urb *urb;
1023 unsigned int pipe;
9bfa35fe 1024
047b2ec8
MH		 1025 if (!data->isoc_tx_ep)
1026 return ERR_PTR(-ENODEV);
9bfa35fe 1027
047b2ec8
MH		 1028 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1029 if (!urb)
1030 return ERR_PTR(-ENOMEM);
9bfa35fe 1031
047b2ec8 1032 pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
9bfa35fe 1033
047b2ec8
MH		 1034 usb_fill_int_urb(urb, data->udev, pipe,
1035 skb->data, skb->len, btusb_isoc_tx_complete,
1036 skb, data->isoc_tx_ep->bInterval);
9bfa35fe 1037
047b2ec8 1038 urb->transfer_flags = URB_ISO_ASAP;
5e23b923 1039
047b2ec8
MH		 1040 __fill_isoc_descriptor(urb, skb->len,
1041 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
5e23b923 1042
89e7533d 1043 skb->dev = (void *)hdev;
047b2ec8
MH		 1044
1045 return urb;
1046}
1047
1048static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1049{
1050 struct btusb_data *data = hci_get_drvdata(hdev);
1051 int err;
7bee549e 1052
5e23b923
MH		 1053 usb_anchor_urb(urb, &data->tx_anchor);
1054
e9753eff 1055 err = usb_submit_urb(urb, GFP_KERNEL);
5e23b923 1056 if (err < 0) {
5a9b80e2
PB		 1057 if (err != -EPERM && err != -ENODEV)
1058 BT_ERR("%s urb %p submission failed (%d)",
89e7533d 1059 hdev->name, urb, -err);
5e23b923
MH		 1060 kfree(urb->setup_packet);
1061 usb_unanchor_urb(urb);
7bee549e
ON		 1062 } else {
1063 usb_mark_last_busy(data->udev);
5e23b923
MH		 1064 }
1065
54a8a79c 1066 usb_free_urb(urb);
5e23b923
MH		 1067 return err;
1068}
1069
047b2ec8
MH		 1070static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1071{
1072 struct btusb_data *data = hci_get_drvdata(hdev);
1073 unsigned long flags;
1074 bool suspending;
1075
1076 spin_lock_irqsave(&data->txlock, flags);
1077 suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1078 if (!suspending)
1079 data->tx_in_flight++;
1080 spin_unlock_irqrestore(&data->txlock, flags);
1081
1082 if (!suspending)
1083 return submit_tx_urb(hdev, urb);
1084
1085 usb_anchor_urb(urb, &data->deferred);
1086 schedule_work(&data->waker);
1087
1088 usb_free_urb(urb);
1089 return 0;
1090}
1091
1092static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1093{
1094 struct urb *urb;
1095
1096 BT_DBG("%s", hdev->name);
1097
1098 if (!test_bit(HCI_RUNNING, &hdev->flags))
1099 return -EBUSY;
1100
1101 switch (bt_cb(skb)->pkt_type) {
1102 case HCI_COMMAND_PKT:
1103 urb = alloc_ctrl_urb(hdev, skb);
1104 if (IS_ERR(urb))
1105 return PTR_ERR(urb);
1106
1107 hdev->stat.cmd_tx++;
1108 return submit_or_queue_tx_urb(hdev, urb);
1109
1110 case HCI_ACLDATA_PKT:
1111 urb = alloc_bulk_urb(hdev, skb);
1112 if (IS_ERR(urb))
1113 return PTR_ERR(urb);
1114
1115 hdev->stat.acl_tx++;
1116 return submit_or_queue_tx_urb(hdev, urb);
1117
1118 case HCI_SCODATA_PKT:
1119 if (hci_conn_num(hdev, SCO_LINK) < 1)
1120 return -ENODEV;
1121
1122 urb = alloc_isoc_urb(hdev, skb);
1123 if (IS_ERR(urb))
1124 return PTR_ERR(urb);
1125
1126 hdev->stat.sco_tx++;
1127 return submit_tx_urb(hdev, urb);
1128 }
1129
1130 return -EILSEQ;
1131}
1132
5e23b923
MH		 1133static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1134{
155961e8 1135 struct btusb_data *data = hci_get_drvdata(hdev);
5e23b923
MH		 1136
1137 BT_DBG("%s evt %d", hdev->name, evt);
1138
014f7bc7
MH		 1139 if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1140 data->sco_num = hci_conn_num(hdev, SCO_LINK);
43c2e57f 1141 schedule_work(&data->work);
a780efa8 1142 }
5e23b923
MH		 1143}
1144
42b16b3f 1145static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
9bfa35fe 1146{
155961e8 1147 struct btusb_data *data = hci_get_drvdata(hdev);
9bfa35fe
MH		 1148 struct usb_interface *intf = data->isoc;
1149 struct usb_endpoint_descriptor *ep_desc;
1150 int i, err;
1151
1152 if (!data->isoc)
1153 return -ENODEV;
1154
1155 err = usb_set_interface(data->udev, 1, altsetting);
1156 if (err < 0) {
1157 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1158 return err;
1159 }
1160
1161 data->isoc_altsetting = altsetting;
1162
1163 data->isoc_tx_ep = NULL;
1164 data->isoc_rx_ep = NULL;
1165
1166 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1167 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1168
1169 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1170 data->isoc_tx_ep = ep_desc;
1171 continue;
1172 }
1173
1174 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1175 data->isoc_rx_ep = ep_desc;
1176 continue;
1177 }
1178 }
1179
1180 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1181 BT_ERR("%s invalid SCO descriptors", hdev->name);
1182 return -ENODEV;
1183 }
1184
1185 return 0;
1186}
1187
5e23b923
MH		 1188static void btusb_work(struct work_struct *work)
1189{
1190 struct btusb_data *data = container_of(work, struct btusb_data, work);
1191 struct hci_dev *hdev = data->hdev;
f4001d28 1192 int new_alts;
7bee549e 1193 int err;
5e23b923 1194
014f7bc7 1195 if (data->sco_num > 0) {
08b8b6c4 1196 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
8efdd0cd 1197 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
7bee549e
ON		 1198 if (err < 0) {
1199 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1200 usb_kill_anchored_urbs(&data->isoc_anchor);
1201 return;
1202 }
1203
08b8b6c4 1204 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
7bee549e 1205 }
f4001d28
MA		 1206
1207 if (hdev->voice_setting & 0x0020) {
1208 static const int alts[3] = { 2, 4, 5 };
89e7533d 1209
014f7bc7 1210 new_alts = alts[data->sco_num - 1];
f4001d28 1211 } else {
014f7bc7 1212 new_alts = data->sco_num;
f4001d28
MA		 1213 }
1214
1215 if (data->isoc_altsetting != new_alts) {
9bfa35fe
MH		 1216 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1217 usb_kill_anchored_urbs(&data->isoc_anchor);
1218
f4001d28 1219 if (__set_isoc_interface(hdev, new_alts) < 0)
9bfa35fe
MH		 1220 return;
1221 }
1222
1223 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
2eda66f4 1224 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
9bfa35fe
MH		 1225 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1226 else
2eda66f4 1227 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
9bfa35fe
MH		 1228 }
1229 } else {
1230 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1231 usb_kill_anchored_urbs(&data->isoc_anchor);
1232
1233 __set_isoc_interface(hdev, 0);
08b8b6c4 1234 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
8efdd0cd 1235 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
5e23b923
MH		 1236 }
1237}
1238
7bee549e
ON		 1239static void btusb_waker(struct work_struct *work)
1240{
1241 struct btusb_data *data = container_of(work, struct btusb_data, waker);
1242 int err;
1243
1244 err = usb_autopm_get_interface(data->intf);
1245 if (err < 0)
1246 return;
1247
1248 usb_autopm_put_interface(data->intf);
1249}
1250
9f8f962c
MH		 1251static int btusb_setup_bcm92035(struct hci_dev *hdev)
1252{
1253 struct sk_buff *skb;
1254 u8 val = 0x00;
1255
1256 BT_DBG("%s", hdev->name);
1257
1258 skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1259 if (IS_ERR(skb))
1260 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1261 else
1262 kfree_skb(skb);
1263
1264 return 0;
1265}
1266
81cac64b
MH		 1267static int btusb_setup_csr(struct hci_dev *hdev)
1268{
1269 struct hci_rp_read_local_version *rp;
1270 struct sk_buff *skb;
1271 int ret;
1272
1273 BT_DBG("%s", hdev->name);
1274
1275 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1276 HCI_INIT_TIMEOUT);
1277 if (IS_ERR(skb)) {
1278 BT_ERR("Reading local version failed (%ld)", -PTR_ERR(skb));
1279 return -PTR_ERR(skb);
1280 }
1281
89e7533d 1282 rp = (struct hci_rp_read_local_version *)skb->data;
81cac64b
MH		 1283
1284 if (!rp->status) {
1285 if (le16_to_cpu(rp->manufacturer) != 10) {
1286 /* Clear the reset quirk since this is not an actual
1287 * early Bluetooth 1.1 device from CSR.
1288 */
1289 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1290
1291 /* These fake CSR controllers have all a broken
1292 * stored link key handling and so just disable it.
1293 */
1294 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY,
1295 &hdev->quirks);
1296 }
1297 }
1298
1299 ret = -bt_to_errno(rp->status);
1300
1301 kfree_skb(skb);
1302
1303 return ret;
1304}
1305
dffd30ee
THJA		 1306struct intel_version {
1307 u8 status;
1308 u8 hw_platform;
1309 u8 hw_variant;
1310 u8 hw_revision;
1311 u8 fw_variant;
1312 u8 fw_revision;
1313 u8 fw_build_num;
1314 u8 fw_build_ww;
1315 u8 fw_build_yy;
1316 u8 fw_patch_num;
1317} __packed;
1318
cda0dd78
MH		 1319struct intel_boot_params {
1320 __u8 status;
1321 __u8 otp_format;
1322 __u8 otp_content;
1323 __u8 otp_patch;
1324 __le16 dev_revid;
1325 __u8 secure_boot;
1326 __u8 key_from_hdr;
1327 __u8 key_type;
1328 __u8 otp_lock;
1329 __u8 api_lock;
1330 __u8 debug_lock;
1331 bdaddr_t otp_bdaddr;
1332 __u8 min_fw_build_nn;
1333 __u8 min_fw_build_cw;
1334 __u8 min_fw_build_yy;
1335 __u8 limited_cce;
1336 __u8 unlocked_state;
1337} __packed;
1338
dffd30ee 1339static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
89e7533d 1340 struct intel_version *ver)
dffd30ee
THJA		 1341{
1342 const struct firmware *fw;
1343 char fwname[64];
1344 int ret;
1345
1346 snprintf(fwname, sizeof(fwname),
1347 "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1348 ver->hw_platform, ver->hw_variant, ver->hw_revision,
1349 ver->fw_variant, ver->fw_revision, ver->fw_build_num,
1350 ver->fw_build_ww, ver->fw_build_yy);
1351
1352 ret = request_firmware(&fw, fwname, &hdev->dev);
1353 if (ret < 0) {
1354 if (ret == -EINVAL) {
1355 BT_ERR("%s Intel firmware file request failed (%d)",
1356 hdev->name, ret);
1357 return NULL;
1358 }
1359
1360 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1361 hdev->name, fwname, ret);
1362
1363 /* If the correct firmware patch file is not found, use the
1364 * default firmware patch file instead
1365 */
1366 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1367 ver->hw_platform, ver->hw_variant);
1368 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1369 BT_ERR("%s failed to open default Intel fw file: %s",
1370 hdev->name, fwname);
1371 return NULL;
1372 }
1373 }
1374
1375 BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1376
1377 return fw;
1378}
1379
1380static int btusb_setup_intel_patching(struct hci_dev *hdev,
1381 const struct firmware *fw,
1382 const u8 **fw_ptr, int *disable_patch)
1383{
1384 struct sk_buff *skb;
1385 struct hci_command_hdr *cmd;
1386 const u8 *cmd_param;
1387 struct hci_event_hdr *evt = NULL;
1388 const u8 *evt_param = NULL;
1389 int remain = fw->size - (*fw_ptr - fw->data);
1390
1391 /* The first byte indicates the types of the patch command or event.
1392 * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1393 * in the current firmware buffer doesn't start with 0x01 or
1394 * the size of remain buffer is smaller than HCI command header,
1395 * the firmware file is corrupted and it should stop the patching
1396 * process.
1397 */
1398 if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1399 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1400 return -EINVAL;
1401 }
1402 (*fw_ptr)++;
1403 remain--;
1404
1405 cmd = (struct hci_command_hdr *)(*fw_ptr);
1406 *fw_ptr += sizeof(*cmd);
1407 remain -= sizeof(*cmd);
1408
1409 /* Ensure that the remain firmware data is long enough than the length
1410 * of command parameter. If not, the firmware file is corrupted.
1411 */
1412 if (remain < cmd->plen) {
1413 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1414 return -EFAULT;
1415 }
1416
1417 /* If there is a command that loads a patch in the firmware
1418 * file, then enable the patch upon success, otherwise just
1419 * disable the manufacturer mode, for example patch activation
1420 * is not required when the default firmware patch file is used
1421 * because there are no patch data to load.
1422 */
1423 if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1424 *disable_patch = 0;
1425
1426 cmd_param = *fw_ptr;
1427 *fw_ptr += cmd->plen;
1428 remain -= cmd->plen;
1429
1430 /* This reads the expected events when the above command is sent to the
1431 * device. Some vendor commands expects more than one events, for
1432 * example command status event followed by vendor specific event.
1433 * For this case, it only keeps the last expected event. so the command
1434 * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1435 * last expected event.
1436 */
1437 while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1438 (*fw_ptr)++;
1439 remain--;
1440
1441 evt = (struct hci_event_hdr *)(*fw_ptr);
1442 *fw_ptr += sizeof(*evt);
1443 remain -= sizeof(*evt);
1444
1445 if (remain < evt->plen) {
1446 BT_ERR("%s Intel fw corrupted: invalid evt len",
1447 hdev->name);
1448 return -EFAULT;
1449 }
1450
1451 evt_param = *fw_ptr;
1452 *fw_ptr += evt->plen;
1453 remain -= evt->plen;
1454 }
1455
1456 /* Every HCI commands in the firmware file has its correspond event.
1457 * If event is not found or remain is smaller than zero, the firmware
1458 * file is corrupted.
1459 */
1460 if (!evt || !evt_param || remain < 0) {
1461 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1462 return -EFAULT;
1463 }
1464
1465 skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1466 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1467 if (IS_ERR(skb)) {
1468 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1469 hdev->name, cmd->opcode, PTR_ERR(skb));
d9c78e97 1470 return PTR_ERR(skb);
dffd30ee
THJA		 1471 }
1472
1473 /* It ensures that the returned event matches the event data read from
1474 * the firmware file. At fist, it checks the length and then
1475 * the contents of the event.
1476 */
1477 if (skb->len != evt->plen) {
1478 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1479 le16_to_cpu(cmd->opcode));
1480 kfree_skb(skb);
1481 return -EFAULT;
1482 }
1483
1484 if (memcmp(skb->data, evt_param, evt->plen)) {
1485 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1486 hdev->name, le16_to_cpu(cmd->opcode));
1487 kfree_skb(skb);
1488 return -EFAULT;
1489 }
1490 kfree_skb(skb);
1491
1492 return 0;
1493}
1494
40cb0984
MH		 1495#define BDADDR_INTEL (&(bdaddr_t) {{0x00, 0x8b, 0x9e, 0x19, 0x03, 0x00}})
1496
1497static int btusb_check_bdaddr_intel(struct hci_dev *hdev)
1498{
1499 struct sk_buff *skb;
1500 struct hci_rp_read_bd_addr *rp;
1501
1502 skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
1503 HCI_INIT_TIMEOUT);
1504 if (IS_ERR(skb)) {
1505 BT_ERR("%s reading Intel device address failed (%ld)",
1506 hdev->name, PTR_ERR(skb));
1507 return PTR_ERR(skb);
1508 }
1509
1510 if (skb->len != sizeof(*rp)) {
1511 BT_ERR("%s Intel device address length mismatch", hdev->name);
1512 kfree_skb(skb);
1513 return -EIO;
1514 }
1515
89e7533d 1516 rp = (struct hci_rp_read_bd_addr *)skb->data;
40cb0984
MH		 1517 if (rp->status) {
1518 BT_ERR("%s Intel device address result failed (%02x)",
1519 hdev->name, rp->status);
1520 kfree_skb(skb);
1521 return -bt_to_errno(rp->status);
1522 }
1523
1524 /* For some Intel based controllers, the default Bluetooth device
1525 * address 00:03:19:9E:8B:00 can be found. These controllers are
1526 * fully operational, but have the danger of duplicate addresses
1527 * and that in turn can cause problems with Bluetooth operation.
1528 */
4739b5b1 1529 if (!bacmp(&rp->bdaddr, BDADDR_INTEL)) {
40cb0984
MH		 1530 BT_ERR("%s found Intel default device address (%pMR)",
1531 hdev->name, &rp->bdaddr);
4739b5b1
MH		 1532 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
1533 }
40cb0984
MH		 1534
1535 kfree_skb(skb);
1536
1537 return 0;
1538}
1539
dffd30ee
THJA		 1540static int btusb_setup_intel(struct hci_dev *hdev)
1541{
1542 struct sk_buff *skb;
1543 const struct firmware *fw;
1544 const u8 *fw_ptr;
1545 int disable_patch;
1546 struct intel_version *ver;
1547
1548 const u8 mfg_enable[] = { 0x01, 0x00 };
1549 const u8 mfg_disable[] = { 0x00, 0x00 };
1550 const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1551 const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1552
1553 BT_DBG("%s", hdev->name);
1554
1555 /* The controller has a bug with the first HCI command sent to it
1556 * returning number of completed commands as zero. This would stall the
1557 * command processing in the Bluetooth core.
1558 *
1559 * As a workaround, send HCI Reset command first which will reset the
1560 * number of completed commands and allow normal command processing
1561 * from now on.
1562 */
1563 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1564 if (IS_ERR(skb)) {
1565 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1566 hdev->name, PTR_ERR(skb));
d9c78e97 1567 return PTR_ERR(skb);
dffd30ee
THJA		 1568 }
1569 kfree_skb(skb);
1570
1571 /* Read Intel specific controller version first to allow selection of
1572 * which firmware file to load.
1573 *
1574 * The returned information are hardware variant and revision plus
1575 * firmware variant, revision and build number.
1576 */
1577 skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1578 if (IS_ERR(skb)) {
1579 BT_ERR("%s reading Intel fw version command failed (%ld)",
1580 hdev->name, PTR_ERR(skb));
d9c78e97 1581 return PTR_ERR(skb);
dffd30ee
THJA		 1582 }
1583
1584 if (skb->len != sizeof(*ver)) {
1585 BT_ERR("%s Intel version event length mismatch", hdev->name);
1586 kfree_skb(skb);
1587 return -EIO;
1588 }
1589
1590 ver = (struct intel_version *)skb->data;
1591 if (ver->status) {
1592 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1593 ver->status);
1594 kfree_skb(skb);
1595 return -bt_to_errno(ver->status);
1596 }
1597
1598 BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1599 hdev->name, ver->hw_platform, ver->hw_variant,
1600 ver->hw_revision, ver->fw_variant, ver->fw_revision,
1601 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1602 ver->fw_patch_num);
1603
1604 /* fw_patch_num indicates the version of patch the device currently
1605 * have. If there is no patch data in the device, it is always 0x00.
1606 * So, if it is other than 0x00, no need to patch the deivce again.
1607 */
1608 if (ver->fw_patch_num) {
1609 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1610 hdev->name, ver->fw_patch_num);
1611 kfree_skb(skb);
40cb0984 1612 btusb_check_bdaddr_intel(hdev);
dffd30ee
THJA		 1613 return 0;
1614 }
1615
1616 /* Opens the firmware patch file based on the firmware version read
1617 * from the controller. If it fails to open the matching firmware
1618 * patch file, it tries to open the default firmware patch file.
1619 * If no patch file is found, allow the device to operate without
1620 * a patch.
1621 */
1622 fw = btusb_setup_intel_get_fw(hdev, ver);
1623 if (!fw) {
1624 kfree_skb(skb);
40cb0984 1625 btusb_check_bdaddr_intel(hdev);
dffd30ee
THJA		 1626 return 0;
1627 }
1628 fw_ptr = fw->data;
1629
1630 /* This Intel specific command enables the manufacturer mode of the
1631 * controller.
1632 *
1633 * Only while this mode is enabled, the driver can download the
1634 * firmware patch data and configuration parameters.
1635 */
1636 skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1637 if (IS_ERR(skb)) {
1638 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1639 hdev->name, PTR_ERR(skb));
1640 release_firmware(fw);
d9c78e97 1641 return PTR_ERR(skb);
dffd30ee
THJA		 1642 }
1643
1644 if (skb->data[0]) {
1645 u8 evt_status = skb->data[0];
89e7533d 1646
dffd30ee
THJA		 1647 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1648 hdev->name, evt_status);
1649 kfree_skb(skb);
1650 release_firmware(fw);
1651 return -bt_to_errno(evt_status);
1652 }
1653 kfree_skb(skb);
1654
1655 disable_patch = 1;
1656
1657 /* The firmware data file consists of list of Intel specific HCI
1658 * commands and its expected events. The first byte indicates the
1659 * type of the message, either HCI command or HCI event.
1660 *
1661 * It reads the command and its expected event from the firmware file,
1662 * and send to the controller. Once __hci_cmd_sync_ev() returns,
1663 * the returned event is compared with the event read from the firmware
1664 * file and it will continue until all the messages are downloaded to
1665 * the controller.
1666 *
1667 * Once the firmware patching is completed successfully,
1668 * the manufacturer mode is disabled with reset and activating the
1669 * downloaded patch.
1670 *
1671 * If the firmware patching fails, the manufacturer mode is
1672 * disabled with reset and deactivating the patch.
1673 *
1674 * If the default patch file is used, no reset is done when disabling
1675 * the manufacturer.
1676 */
1677 while (fw->size > fw_ptr - fw->data) {
1678 int ret;
1679
1680 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1681 &disable_patch);
1682 if (ret < 0)
1683 goto exit_mfg_deactivate;
1684 }
1685
1686 release_firmware(fw);
1687
1688 if (disable_patch)
1689 goto exit_mfg_disable;
1690
1691 /* Patching completed successfully and disable the manufacturer mode
1692 * with reset and activate the downloaded firmware patches.
1693 */
1694 skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1695 mfg_reset_activate, HCI_INIT_TIMEOUT);
1696 if (IS_ERR(skb)) {
1697 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1698 hdev->name, PTR_ERR(skb));
d9c78e97 1699 return PTR_ERR(skb);
dffd30ee
THJA		 1700 }
1701 kfree_skb(skb);
1702
1703 BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1704 hdev->name);
1705
40cb0984 1706 btusb_check_bdaddr_intel(hdev);
dffd30ee
THJA		 1707 return 0;
1708
1709exit_mfg_disable:
1710 /* Disable the manufacturer mode without reset */
1711 skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1712 HCI_INIT_TIMEOUT);
1713 if (IS_ERR(skb)) {
1714 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1715 hdev->name, PTR_ERR(skb));
d9c78e97 1716 return PTR_ERR(skb);
dffd30ee
THJA		 1717 }
1718 kfree_skb(skb);
1719
1720 BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
40cb0984
MH		 1721
1722 btusb_check_bdaddr_intel(hdev);
dffd30ee
THJA		 1723 return 0;
1724
1725exit_mfg_deactivate:
1726 release_firmware(fw);
1727
1728 /* Patching failed. Disable the manufacturer mode with reset and
1729 * deactivate the downloaded firmware patches.
1730 */
1731 skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1732 mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1733 if (IS_ERR(skb)) {
1734 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1735 hdev->name, PTR_ERR(skb));
d9c78e97 1736 return PTR_ERR(skb);
dffd30ee
THJA		 1737 }
1738 kfree_skb(skb);
1739
1740 BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1741 hdev->name);
1742
40cb0984 1743 btusb_check_bdaddr_intel(hdev);
dffd30ee
THJA		 1744 return 0;
1745}
1746
cda0dd78
MH		 1747static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1748{
1749 struct sk_buff *skb;
1750 struct hci_event_hdr *hdr;
1751 struct hci_ev_cmd_complete *evt;
1752
1753 skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_ATOMIC);
1754 if (!skb)
1755 return -ENOMEM;
1756
1757 hdr = (struct hci_event_hdr *)skb_put(skb, sizeof(*hdr));
1758 hdr->evt = HCI_EV_CMD_COMPLETE;
1759 hdr->plen = sizeof(*evt) + 1;
1760
1761 evt = (struct hci_ev_cmd_complete *)skb_put(skb, sizeof(*evt));
1762 evt->ncmd = 0x01;
1763 evt->opcode = cpu_to_le16(opcode);
1764
1765 *skb_put(skb, 1) = 0x00;
1766
1767 bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
1768
1769 return hci_recv_frame(hdev, skb);
1770}
1771
1772static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1773 int count)
1774{
1775 /* When the device is in bootloader mode, then it can send
1776 * events via the bulk endpoint. These events are treated the
1777 * same way as the ones received from the interrupt endpoint.
1778 */
1779 if (test_bit(BTUSB_BOOTLOADER, &data->flags))
1780 return btusb_recv_intr(data, buffer, count);
1781
1782 return btusb_recv_bulk(data, buffer, count);
1783}
1784
1785static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
1786{
1787 struct btusb_data *data = hci_get_drvdata(hdev);
1788
1789 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1790 struct hci_event_hdr *hdr = (void *)skb->data;
1791
1792 /* When the firmware loading completes the device sends
1793 * out a vendor specific event indicating the result of
1794 * the firmware loading.
1795 */
1796 if (skb->len == 7 && hdr->evt == 0xff && hdr->plen == 0x05 &&
1797 skb->data[2] == 0x06) {
1798 if (skb->data[3] != 0x00)
1799 test_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
1800
ce6bb929
MH		 1801 if (test_and_clear_bit(BTUSB_DOWNLOADING,
1802 &data->flags) &&
1803 test_bit(BTUSB_FIRMWARE_LOADED, &data->flags))
cda0dd78
MH		 1804 wake_up_interruptible(&hdev->req_wait_q);
1805 }
1806
1807 /* When switching to the operational firmware the device
1808 * sends a vendor specific event indicating that the bootup
1809 * completed.
1810 */
1811 if (skb->len == 9 && hdr->evt == 0xff && hdr->plen == 0x07 &&
1812 skb->data[2] == 0x02) {
1813 if (test_and_clear_bit(BTUSB_BOOTING, &data->flags))
1814 wake_up_interruptible(&hdev->req_wait_q);
1815 }
1816 }
1817
1818 return hci_recv_frame(hdev, skb);
1819}
1820
1821static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
1822{
1823 struct btusb_data *data = hci_get_drvdata(hdev);
1824 struct urb *urb;
1825
1826 BT_DBG("%s", hdev->name);
1827
1828 if (!test_bit(HCI_RUNNING, &hdev->flags))
1829 return -EBUSY;
1830
1831 switch (bt_cb(skb)->pkt_type) {
1832 case HCI_COMMAND_PKT:
1833 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1834 struct hci_command_hdr *cmd = (void *)skb->data;
1835 __u16 opcode = le16_to_cpu(cmd->opcode);
1836
1837 /* When in bootloader mode and the command 0xfc09
1838 * is received, it needs to be send down the
1839 * bulk endpoint. So allocate a bulk URB instead.
1840 */
1841 if (opcode == 0xfc09)
1842 urb = alloc_bulk_urb(hdev, skb);
1843 else
1844 urb = alloc_ctrl_urb(hdev, skb);
1845
1846 /* When the 0xfc01 command is issued to boot into
1847 * the operational firmware, it will actually not
1848 * send a command complete event. To keep the flow
1849 * control working inject that event here.
1850 */
1851 if (opcode == 0xfc01)
1852 inject_cmd_complete(hdev, opcode);
1853 } else {
1854 urb = alloc_ctrl_urb(hdev, skb);
1855 }
1856 if (IS_ERR(urb))
1857 return PTR_ERR(urb);
1858
1859 hdev->stat.cmd_tx++;
1860 return submit_or_queue_tx_urb(hdev, urb);
1861
1862 case HCI_ACLDATA_PKT:
1863 urb = alloc_bulk_urb(hdev, skb);
1864 if (IS_ERR(urb))
1865 return PTR_ERR(urb);
1866
1867 hdev->stat.acl_tx++;
1868 return submit_or_queue_tx_urb(hdev, urb);
1869
1870 case HCI_SCODATA_PKT:
1871 if (hci_conn_num(hdev, SCO_LINK) < 1)
1872 return -ENODEV;
1873
1874 urb = alloc_isoc_urb(hdev, skb);
1875 if (IS_ERR(urb))
1876 return PTR_ERR(urb);
1877
1878 hdev->stat.sco_tx++;
1879 return submit_tx_urb(hdev, urb);
1880 }
1881
1882 return -EILSEQ;
1883}
1884
1885static int btusb_intel_secure_send(struct hci_dev *hdev, u8 fragment_type,
1886 u32 plen, const void *param)
1887{
1888 while (plen > 0) {
1889 struct sk_buff *skb;
1890 u8 cmd_param[253], fragment_len = (plen > 252) ? 252 : plen;
1891
1892 cmd_param[0] = fragment_type;
1893 memcpy(cmd_param + 1, param, fragment_len);
1894
1895 skb = __hci_cmd_sync(hdev, 0xfc09, fragment_len + 1,
1896 cmd_param, HCI_INIT_TIMEOUT);
1897 if (IS_ERR(skb))
1898 return PTR_ERR(skb);
1899
1900 kfree_skb(skb);
1901
1902 plen -= fragment_len;
1903 param += fragment_len;
1904 }
1905
1906 return 0;
1907}
1908
1909static void btusb_intel_version_info(struct hci_dev *hdev,
1910 struct intel_version *ver)
1911{
1912 const char *variant;
1913
1914 switch (ver->fw_variant) {
1915 case 0x06:
1916 variant = "Bootloader";
1917 break;
1918 case 0x23:
1919 variant = "Firmware";
1920 break;
1921 default:
1922 return;
1923 }
1924
1925 BT_INFO("%s: %s revision %u.%u build %u week %u %u", hdev->name,
1926 variant, ver->fw_revision >> 4, ver->fw_revision & 0x0f,
1927 ver->fw_build_num, ver->fw_build_ww, 2000 + ver->fw_build_yy);
1928}
1929
1930static int btusb_setup_intel_new(struct hci_dev *hdev)
1931{
1932 static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01,
1933 0x00, 0x08, 0x04, 0x00 };
1934 struct btusb_data *data = hci_get_drvdata(hdev);
1935 struct sk_buff *skb;
1936 struct intel_version *ver;
1937 struct intel_boot_params *params;
1938 const struct firmware *fw;
1939 const u8 *fw_ptr;
1940 char fwname[64];
1941 ktime_t calltime, delta, rettime;
1942 unsigned long long duration;
1943 int err;
1944
1945 BT_DBG("%s", hdev->name);
1946
1947 calltime = ktime_get();
1948
1949 /* Read the Intel version information to determine if the device
1950 * is in bootloader mode or if it already has operational firmware
1951 * loaded.
1952 */
1953 skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1954 if (IS_ERR(skb)) {
1955 BT_ERR("%s: Reading Intel version information failed (%ld)",
1956 hdev->name, PTR_ERR(skb));
1957 return PTR_ERR(skb);
1958 }
1959
1960 if (skb->len != sizeof(*ver)) {
1961 BT_ERR("%s: Intel version event size mismatch", hdev->name);
1962 kfree_skb(skb);
1963 return -EILSEQ;
1964 }
1965
1966 ver = (struct intel_version *)skb->data;
1967 if (ver->status) {
1968 BT_ERR("%s: Intel version command failure (%02x)",
1969 hdev->name, ver->status);
1970 err = -bt_to_errno(ver->status);
1971 kfree_skb(skb);
1972 return err;
1973 }
1974
1975 /* The hardware platform number has a fixed value of 0x37 and
1976 * for now only accept this single value.
1977 */
1978 if (ver->hw_platform != 0x37) {
1979 BT_ERR("%s: Unsupported Intel hardware platform (%u)",
1980 hdev->name, ver->hw_platform);
1981 kfree_skb(skb);
1982 return -EINVAL;
1983 }
1984
1985 /* At the moment only the hardware variant iBT 3.0 (LnP/SfP) is
1986 * supported by this firmware loading method. This check has been
1987 * put in place to ensure correct forward compatibility options
1988 * when newer hardware variants come along.
1989 */
1990 if (ver->hw_variant != 0x0b) {
1991 BT_ERR("%s: Unsupported Intel hardware variant (%u)",
1992 hdev->name, ver->hw_variant);
1993 kfree_skb(skb);
1994 return -EINVAL;
1995 }
1996
1997 btusb_intel_version_info(hdev, ver);
1998
1999 /* The firmware variant determines if the device is in bootloader
2000 * mode or is running operational firmware. The value 0x06 identifies
2001 * the bootloader and the value 0x23 identifies the operational
2002 * firmware.
2003 *
2004 * When the operational firmware is already present, then only
2005 * the check for valid Bluetooth device address is needed. This
2006 * determines if the device will be added as configured or
2007 * unconfigured controller.
2008 *
2009 * It is not possible to use the Secure Boot Parameters in this
2010 * case since that command is only available in bootloader mode.
2011 */
2012 if (ver->fw_variant == 0x23) {
2013 kfree_skb(skb);
2014 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2015 btusb_check_bdaddr_intel(hdev);
2016 return 0;
2017 }
2018
2019 /* If the device is not in bootloader mode, then the only possible
2020 * choice is to return an error and abort the device initialization.
2021 */
2022 if (ver->fw_variant != 0x06) {
2023 BT_ERR("%s: Unsupported Intel firmware variant (%u)",
2024 hdev->name, ver->fw_variant);
2025 kfree_skb(skb);
2026 return -ENODEV;
2027 }
2028
2029 kfree_skb(skb);
2030
2031 /* Read the secure boot parameters to identify the operating
2032 * details of the bootloader.
2033 */
2034 skb = __hci_cmd_sync(hdev, 0xfc0d, 0, NULL, HCI_INIT_TIMEOUT);
2035 if (IS_ERR(skb)) {
2036 BT_ERR("%s: Reading Intel boot parameters failed (%ld)",
2037 hdev->name, PTR_ERR(skb));
2038 return PTR_ERR(skb);
2039 }
2040
2041 if (skb->len != sizeof(*params)) {
2042 BT_ERR("%s: Intel boot parameters size mismatch", hdev->name);
2043 kfree_skb(skb);
2044 return -EILSEQ;
2045 }
2046
2047 params = (struct intel_boot_params *)skb->data;
2048 if (params->status) {
2049 BT_ERR("%s: Intel boot parameters command failure (%02x)",
2050 hdev->name, params->status);
2051 err = -bt_to_errno(params->status);
2052 kfree_skb(skb);
2053 return err;
2054 }
2055
2056 BT_INFO("%s: Device revision is %u", hdev->name,
2057 le16_to_cpu(params->dev_revid));
2058
2059 BT_INFO("%s: Secure boot is %s", hdev->name,
2060 params->secure_boot ? "enabled" : "disabled");
2061
2062 BT_INFO("%s: Minimum firmware build %u week %u %u", hdev->name,
2063 params->min_fw_build_nn, params->min_fw_build_cw,
2064 2000 + params->min_fw_build_yy);
2065
2066 /* It is required that every single firmware fragment is acknowledged
2067 * with a command complete event. If the boot parameters indicate
2068 * that this bootloader does not send them, then abort the setup.
2069 */
2070 if (params->limited_cce != 0x00) {
2071 BT_ERR("%s: Unsupported Intel firmware loading method (%u)",
2072 hdev->name, params->limited_cce);
2073 kfree_skb(skb);
2074 return -EINVAL;
2075 }
2076
2077 /* If the OTP has no valid Bluetooth device address, then there will
2078 * also be no valid address for the operational firmware.
2079 */
2080 if (!bacmp(&params->otp_bdaddr, BDADDR_ANY)) {
2081 BT_INFO("%s: No device address configured", hdev->name);
2082 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2083 }
2084
2085 /* With this Intel bootloader only the hardware variant and device
2086 * revision information are used to select the right firmware.
2087 *
2088 * Currently this bootloader support is limited to hardware variant
2089 * iBT 3.0 (LnP/SfP) which is identified by the value 11 (0x0b).
2090 */
2091 snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.sfi",
2092 le16_to_cpu(params->dev_revid));
2093
2094 err = request_firmware(&fw, fwname, &hdev->dev);
2095 if (err < 0) {
2096 BT_ERR("%s: Failed to load Intel firmware file (%d)",
2097 hdev->name, err);
2098 kfree_skb(skb);
2099 return err;
2100 }
2101
2102 BT_INFO("%s: Found device firmware: %s", hdev->name, fwname);
2103
2104 kfree_skb(skb);
2105
2106 if (fw->size < 644) {
2107 BT_ERR("%s: Invalid size of firmware file (%zu)",
2108 hdev->name, fw->size);
2109 err = -EBADF;
2110 goto done;
2111 }
2112
2113 set_bit(BTUSB_DOWNLOADING, &data->flags);
2114
2115 /* Start the firmware download transaction with the Init fragment
2116 * represented by the 128 bytes of CSS header.
2117 */
2118 err = btusb_intel_secure_send(hdev, 0x00, 128, fw->data);
2119 if (err < 0) {
2120 BT_ERR("%s: Failed to send firmware header (%d)",
2121 hdev->name, err);
2122 goto done;
2123 }
2124
2125 /* Send the 256 bytes of public key information from the firmware
2126 * as the PKey fragment.
2127 */
2128 err = btusb_intel_secure_send(hdev, 0x03, 256, fw->data + 128);
2129 if (err < 0) {
2130 BT_ERR("%s: Failed to send firmware public key (%d)",
2131 hdev->name, err);
2132 goto done;
2133 }
2134
2135 /* Send the 256 bytes of signature information from the firmware
2136 * as the Sign fragment.
2137 */
2138 err = btusb_intel_secure_send(hdev, 0x02, 256, fw->data + 388);
2139 if (err < 0) {
2140 BT_ERR("%s: Failed to send firmware signature (%d)",
2141 hdev->name, err);
2142 goto done;
2143 }
2144
2145 fw_ptr = fw->data + 644;
2146
2147 while (fw_ptr - fw->data < fw->size) {
2148 struct hci_command_hdr *cmd = (void *)fw_ptr;
2149 u8 cmd_len;
2150
2151 cmd_len = sizeof(*cmd) + cmd->plen;
2152
2153 /* Send each command from the firmware data buffer as
2154 * a single Data fragment.
2155 */
2156 err = btusb_intel_secure_send(hdev, 0x01, cmd_len, fw_ptr);
2157 if (err < 0) {
2158 BT_ERR("%s: Failed to send firmware data (%d)",
2159 hdev->name, err);
2160 goto done;
2161 }
2162
2163 fw_ptr += cmd_len;
2164 }
2165
ce6bb929
MH		 2166 set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2167
cda0dd78
MH		 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 this
2173 * flag will be cleared. So just in case that happens really quickly,
2174 * check it first before adding the wait queue.
2175 */
2176 if (test_bit(BTUSB_DOWNLOADING, &data->flags)) {
2177 DECLARE_WAITQUEUE(wait, current);
2178 signed long timeout;
2179
2180 BT_INFO("%s: Waiting for firmware download to complete",
2181 hdev->name);
2182
2183 add_wait_queue(&hdev->req_wait_q, &wait);
2184 set_current_state(TASK_INTERRUPTIBLE);
2185
2186 /* The firmware loading should not take longer than 5 seconds
2187 * and thus just timeout if that happens and fail the setup
2188 * of this device.
2189 */
2190 timeout = schedule_timeout(msecs_to_jiffies(5000));
2191
2192 remove_wait_queue(&hdev->req_wait_q, &wait);
2193
2194 if (signal_pending(current)) {
2195 BT_ERR("%s: Firmware loading interrupted", hdev->name);
2196 err = -EINTR;
2197 goto done;
2198 }
2199
2200 if (!timeout) {
2201 BT_ERR("%s: Firmware loading timeout", hdev->name);
2202 err = -ETIMEDOUT;
2203 goto done;
2204 }
2205 }
2206
2207 if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2208 BT_ERR("%s: Firmware loading failed", hdev->name);
2209 err = -ENOEXEC;
2210 goto done;
2211 }
2212
2213 rettime = ktime_get();
2214 delta = ktime_sub(rettime, calltime);
2215 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2216
2217 BT_INFO("%s: Firmware loaded in %llu usecs", hdev->name, duration);
2218
2219done:
2220 release_firmware(fw);
2221
2222 if (err < 0)
2223 return err;
2224
2225 calltime = ktime_get();
2226
2227 set_bit(BTUSB_BOOTING, &data->flags);
2228
2229 skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(reset_param), reset_param,
2230 HCI_INIT_TIMEOUT);
2231 if (IS_ERR(skb))
2232 return PTR_ERR(skb);
2233
2234 kfree_skb(skb);
2235
2236 /* The bootloader will not indicate when the device is ready. This
2237 * is done by the operational firmware sending bootup notification.
2238 */
2239 if (test_bit(BTUSB_BOOTING, &data->flags)) {
2240 DECLARE_WAITQUEUE(wait, current);
2241 signed long timeout;
2242
2243 BT_INFO("%s: Waiting for device to boot", hdev->name);
2244
2245 add_wait_queue(&hdev->req_wait_q, &wait);
2246 set_current_state(TASK_INTERRUPTIBLE);
2247
2248 /* Booting into operational firmware should not take
2249 * longer than 1 second. However if that happens, then
2250 * just fail the setup since something went wrong.
2251 */
2252 timeout = schedule_timeout(msecs_to_jiffies(1000));
2253
2254 remove_wait_queue(&hdev->req_wait_q, &wait);
2255
2256 if (signal_pending(current)) {
2257 BT_ERR("%s: Device boot interrupted", hdev->name);
2258 return -EINTR;
2259 }
2260
2261 if (!timeout) {
2262 BT_ERR("%s: Device boot timeout", hdev->name);
2263 return -ETIMEDOUT;
2264 }
2265 }
2266
2267 rettime = ktime_get();
2268 delta = ktime_sub(rettime, calltime);
2269 duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2270
2271 BT_INFO("%s: Device booted in %llu usecs", hdev->name, duration);
2272
2273 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2274
2275 return 0;
2276}
2277
385a768c
MH		 2278static void btusb_hw_error_intel(struct hci_dev *hdev, u8 code)
2279{
2280 struct sk_buff *skb;
2281 u8 type = 0x00;
2282
2283 BT_ERR("%s: Hardware error 0x%2.2x", hdev->name, code);
2284
2285 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2286 if (IS_ERR(skb)) {
2287 BT_ERR("%s: Reset after hardware error failed (%ld)",
2288 hdev->name, PTR_ERR(skb));
2289 return;
2290 }
2291 kfree_skb(skb);
2292
2293 skb = __hci_cmd_sync(hdev, 0xfc22, 1, &type, HCI_INIT_TIMEOUT);
2294 if (IS_ERR(skb)) {
2295 BT_ERR("%s: Retrieving Intel exception info failed (%ld)",
2296 hdev->name, PTR_ERR(skb));
2297 return;
2298 }
2299
2300 if (skb->len != 13) {
2301 BT_ERR("%s: Exception info size mismatch", hdev->name);
2302 kfree_skb(skb);
2303 return;
2304 }
2305
2306 if (skb->data[0] != 0x00) {
2307 BT_ERR("%s: Exception info command failure (%02x)",
2308 hdev->name, skb->data[0]);
2309 kfree_skb(skb);
2310 return;
2311 }
2312
2313 BT_ERR("%s: Exception info %s", hdev->name, (char *)(skb->data + 1));
2314
2315 kfree_skb(skb);
2316}
2317
cb8d6597
MH		 2318static int btusb_set_bdaddr_intel(struct hci_dev *hdev, const bdaddr_t *bdaddr)
2319{
2320 struct sk_buff *skb;
2321 long ret;
2322
2323 skb = __hci_cmd_sync(hdev, 0xfc31, 6, bdaddr, HCI_INIT_TIMEOUT);
2324 if (IS_ERR(skb)) {
2325 ret = PTR_ERR(skb);
2326 BT_ERR("%s: changing Intel device address failed (%ld)",
89e7533d 2327 hdev->name, ret);
cb8d6597
MH		 2328 return ret;
2329 }
2330 kfree_skb(skb);
2331
2332 return 0;
2333}
2334
ae8df494
AK		 2335static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2336 const bdaddr_t *bdaddr)
2337{
2338 struct sk_buff *skb;
2339 u8 buf[8];
2340 long ret;
2341
2342 buf[0] = 0xfe;
2343 buf[1] = sizeof(bdaddr_t);
2344 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2345
2346 skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2347 if (IS_ERR(skb)) {
2348 ret = PTR_ERR(skb);
2349 BT_ERR("%s: changing Marvell device address failed (%ld)",
2350 hdev->name, ret);
2351 return ret;
2352 }
2353 kfree_skb(skb);
2354
2355 return 0;
2356}
2357
c8abb73f
MH		 2358#define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
2359
10d4c673
PG		 2360static int btusb_setup_bcm_patchram(struct hci_dev *hdev)
2361{
2362 struct btusb_data *data = hci_get_drvdata(hdev);
2363 struct usb_device *udev = data->udev;
2364 char fw_name[64];
2365 const struct firmware *fw;
2366 const u8 *fw_ptr;
2367 size_t fw_size;
2368 const struct hci_command_hdr *cmd;
2369 const u8 *cmd_param;
2370 u16 opcode;
2371 struct sk_buff *skb;
2372 struct hci_rp_read_local_version *ver;
c8abb73f 2373 struct hci_rp_read_bd_addr *bda;
10d4c673
PG		 2374 long ret;
2375
2376 snprintf(fw_name, sizeof(fw_name), "brcm/%s-%04x-%04x.hcd",
2377 udev->product ? udev->product : "BCM",
2378 le16_to_cpu(udev->descriptor.idVendor),
2379 le16_to_cpu(udev->descriptor.idProduct));
2380
2381 ret = request_firmware(&fw, fw_name, &hdev->dev);
2382 if (ret < 0) {
c8abb73f 2383 BT_INFO("%s: BCM: patch %s not found", hdev->name, fw_name);
10d4c673
PG		 2384 return 0;
2385 }
2386
2387 /* Reset */
2388 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2389 if (IS_ERR(skb)) {
2390 ret = PTR_ERR(skb);
2391 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
2392 goto done;
2393 }
2394 kfree_skb(skb);
2395
2396 /* Read Local Version Info */
2397 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
2398 HCI_INIT_TIMEOUT);
2399 if (IS_ERR(skb)) {
2400 ret = PTR_ERR(skb);
2401 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
89e7533d 2402 hdev->name, ret);
10d4c673
PG		 2403 goto done;
2404 }
2405
2406 if (skb->len != sizeof(*ver)) {
2407 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
89e7533d 2408 hdev->name);
10d4c673
PG		 2409 kfree_skb(skb);
2410 ret = -EIO;
2411 goto done;
2412 }
2413
89e7533d 2414 ver = (struct hci_rp_read_local_version *)skb->data;
10d4c673
PG		 2415 BT_INFO("%s: BCM: patching hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
2416 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
2417 ver->lmp_ver, ver->lmp_subver);
2418 kfree_skb(skb);
2419
2420 /* Start Download */
2421 skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
2422 if (IS_ERR(skb)) {
2423 ret = PTR_ERR(skb);
2424 BT_ERR("%s: BCM: Download Minidrv command failed (%ld)",
89e7533d 2425 hdev->name, ret);
10d4c673
PG		 2426 goto reset_fw;
2427 }
2428 kfree_skb(skb);
2429
2430 /* 50 msec delay after Download Minidrv completes */
2431 msleep(50);
2432
2433 fw_ptr = fw->data;
2434 fw_size = fw->size;
2435
2436 while (fw_size >= sizeof(*cmd)) {
89e7533d 2437 cmd = (struct hci_command_hdr *)fw_ptr;
10d4c673
PG		 2438 fw_ptr += sizeof(*cmd);
2439 fw_size -= sizeof(*cmd);
2440
2441 if (fw_size < cmd->plen) {
2442 BT_ERR("%s: BCM: patch %s is corrupted",
89e7533d 2443 hdev->name, fw_name);
10d4c673
PG		 2444 ret = -EINVAL;
2445 goto reset_fw;
2446 }
2447
2448 cmd_param = fw_ptr;
2449 fw_ptr += cmd->plen;
2450 fw_size -= cmd->plen;
2451
2452 opcode = le16_to_cpu(cmd->opcode);
2453
2454 skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
2455 HCI_INIT_TIMEOUT);
2456 if (IS_ERR(skb)) {
2457 ret = PTR_ERR(skb);
2458 BT_ERR("%s: BCM: patch command %04x failed (%ld)",
89e7533d 2459 hdev->name, opcode, ret);
10d4c673
PG		 2460 goto reset_fw;
2461 }
2462 kfree_skb(skb);
2463 }
2464
2465 /* 250 msec delay after Launch Ram completes */
2466 msleep(250);
2467
2468reset_fw:
2469 /* Reset */
2470 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2471 if (IS_ERR(skb)) {
2472 ret = PTR_ERR(skb);
2473 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
2474 goto done;
2475 }
2476 kfree_skb(skb);
2477
2478 /* Read Local Version Info */
2479 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
2480 HCI_INIT_TIMEOUT);
2481 if (IS_ERR(skb)) {
2482 ret = PTR_ERR(skb);
2483 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
89e7533d 2484 hdev->name, ret);
10d4c673
PG		 2485 goto done;
2486 }
2487
2488 if (skb->len != sizeof(*ver)) {
2489 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
89e7533d 2490 hdev->name);
10d4c673
PG		 2491 kfree_skb(skb);
2492 ret = -EIO;
2493 goto done;
2494 }
2495
89e7533d 2496 ver = (struct hci_rp_read_local_version *)skb->data;
10d4c673
PG		 2497 BT_INFO("%s: BCM: firmware hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
2498 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
2499 ver->lmp_ver, ver->lmp_subver);
2500 kfree_skb(skb);
2501
c8abb73f
MH		 2502 /* Read BD Address */
2503 skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
2504 HCI_INIT_TIMEOUT);
2505 if (IS_ERR(skb)) {
2506 ret = PTR_ERR(skb);
2507 BT_ERR("%s: HCI_OP_READ_BD_ADDR failed (%ld)",
89e7533d 2508 hdev->name, ret);
c8abb73f
MH		 2509 goto done;
2510 }
2511
2512 if (skb->len != sizeof(*bda)) {
2513 BT_ERR("%s: HCI_OP_READ_BD_ADDR event length mismatch",
89e7533d 2514 hdev->name);
c8abb73f
MH		 2515 kfree_skb(skb);
2516 ret = -EIO;
2517 goto done;
2518 }
2519
89e7533d 2520 bda = (struct hci_rp_read_bd_addr *)skb->data;
c8abb73f
MH		 2521 if (bda->status) {
2522 BT_ERR("%s: HCI_OP_READ_BD_ADDR error status (%02x)",
2523 hdev->name, bda->status);
2524 kfree_skb(skb);
2525 ret = -bt_to_errno(bda->status);
2526 goto done;
2527 }
2528
2529 /* The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
2530 * with no configured address.
2531 */
849e5086 2532 if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0)) {
c8abb73f
MH		 2533 BT_INFO("%s: BCM: using default device address (%pMR)",
2534 hdev->name, &bda->bdaddr);
849e5086
MH		 2535 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2536 }
c8abb73f
MH		 2537
2538 kfree_skb(skb);
2539
10d4c673
PG		 2540done:
2541 release_firmware(fw);
2542
2543 return ret;
2544}
2545
abbaf50e
MH		 2546static int btusb_set_bdaddr_bcm(struct hci_dev *hdev, const bdaddr_t *bdaddr)
2547{
2548 struct sk_buff *skb;
2549 long ret;
2550
2551 skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
2552 if (IS_ERR(skb)) {
2553 ret = PTR_ERR(skb);
2554 BT_ERR("%s: BCM: Change address command failed (%ld)",
89e7533d 2555 hdev->name, ret);
abbaf50e
MH		 2556 return ret;
2557 }
2558 kfree_skb(skb);
2559
2560 return 0;
2561}
2562
5859223e
TK		 2563static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2564 const bdaddr_t *bdaddr)
2565{
2566 struct sk_buff *skb;
2567 u8 buf[10];
2568 long ret;
2569
2570 buf[0] = 0x01;
2571 buf[1] = 0x01;
2572 buf[2] = 0x00;
2573 buf[3] = sizeof(bdaddr_t);
2574 memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2575
2576 skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2577 if (IS_ERR(skb)) {
2578 ret = PTR_ERR(skb);
2579 BT_ERR("%s: Change address command failed (%ld)",
2580 hdev->name, ret);
2581 return ret;
2582 }
2583 kfree_skb(skb);
2584
2585 return 0;
2586}
2587
5e23b923 2588static int btusb_probe(struct usb_interface *intf,
89e7533d 2589 const struct usb_device_id *id)
5e23b923
MH		 2590{
2591 struct usb_endpoint_descriptor *ep_desc;
2592 struct btusb_data *data;
2593 struct hci_dev *hdev;
2594 int i, err;
2595
2596 BT_DBG("intf %p id %p", intf, id);
2597
cfeb4145 2598 /* interface numbers are hardcoded in the spec */
5e23b923
MH		 2599 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
2600 return -ENODEV;
2601
2602 if (!id->driver_info) {
2603 const struct usb_device_id *match;
89e7533d 2604
5e23b923
MH		 2605 match = usb_match_id(intf, blacklist_table);
2606 if (match)
2607 id = match;
2608 }
2609
cfeb4145
MH		 2610 if (id->driver_info == BTUSB_IGNORE)
2611 return -ENODEV;
2612
2d25f8b4
SL		 2613 if (id->driver_info & BTUSB_ATH3012) {
2614 struct usb_device *udev = interface_to_usbdev(intf);
2615
2616 /* Old firmware would otherwise let ath3k driver load
2617 * patch and sysconfig files */
2618 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
2619 return -ENODEV;
2620 }
2621
98921dbd 2622 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
5e23b923
MH		 2623 if (!data)
2624 return -ENOMEM;
2625
2626 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2627 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2628
2629 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
2630 data->intr_ep = ep_desc;
2631 continue;
2632 }
2633
2634 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2635 data->bulk_tx_ep = ep_desc;
2636 continue;
2637 }
2638
2639 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2640 data->bulk_rx_ep = ep_desc;
2641 continue;
2642 }
2643 }
2644
98921dbd 2645 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
5e23b923 2646 return -ENODEV;
5e23b923 2647
893ba544
MH		 2648 if (id->driver_info & BTUSB_AMP) {
2649 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
2650 data->cmdreq = 0x2b;
2651 } else {
2652 data->cmdreq_type = USB_TYPE_CLASS;
2653 data->cmdreq = 0x00;
2654 }
7a9d4020 2655
5e23b923 2656 data->udev = interface_to_usbdev(intf);
5fbcd260 2657 data->intf = intf;
5e23b923 2658
5e23b923 2659 INIT_WORK(&data->work, btusb_work);
7bee549e 2660 INIT_WORK(&data->waker, btusb_waker);
803b5836
MH		 2661 init_usb_anchor(&data->deferred);
2662 init_usb_anchor(&data->tx_anchor);
7bee549e 2663 spin_lock_init(&data->txlock);
5e23b923 2664
5e23b923
MH		 2665 init_usb_anchor(&data->intr_anchor);
2666 init_usb_anchor(&data->bulk_anchor);
9bfa35fe 2667 init_usb_anchor(&data->isoc_anchor);
803b5836 2668 spin_lock_init(&data->rxlock);
5e23b923 2669
cda0dd78
MH		 2670 if (id->driver_info & BTUSB_INTEL_NEW) {
2671 data->recv_event = btusb_recv_event_intel;
2672 data->recv_bulk = btusb_recv_bulk_intel;
2673 set_bit(BTUSB_BOOTLOADER, &data->flags);
2674 } else {
2675 data->recv_event = hci_recv_frame;
2676 data->recv_bulk = btusb_recv_bulk;
2677 }
2cbd3f5c 2678
5e23b923 2679 hdev = hci_alloc_dev();
98921dbd 2680 if (!hdev)
5e23b923 2681 return -ENOMEM;
5e23b923 2682
c13854ce 2683 hdev->bus = HCI_USB;
155961e8 2684 hci_set_drvdata(hdev, data);
5e23b923 2685
893ba544
MH		 2686 if (id->driver_info & BTUSB_AMP)
2687 hdev->dev_type = HCI_AMP;
2688 else
2689 hdev->dev_type = HCI_BREDR;
2690
5e23b923
MH		 2691 data->hdev = hdev;
2692
2693 SET_HCIDEV_DEV(hdev, &intf->dev);
2694
9f8f962c
MH		 2695 hdev->open = btusb_open;
2696 hdev->close = btusb_close;
2697 hdev->flush = btusb_flush;
2698 hdev->send = btusb_send_frame;
2699 hdev->notify = btusb_notify;
2700
2701 if (id->driver_info & BTUSB_BCM92035)
2702 hdev->setup = btusb_setup_bcm92035;
5e23b923 2703
abbaf50e 2704 if (id->driver_info & BTUSB_BCM_PATCHRAM) {
10d4c673 2705 hdev->setup = btusb_setup_bcm_patchram;
abbaf50e 2706 hdev->set_bdaddr = btusb_set_bdaddr_bcm;
27c3fbe0 2707 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
abbaf50e 2708 }
10d4c673 2709
cb8d6597 2710 if (id->driver_info & BTUSB_INTEL) {
dffd30ee 2711 hdev->setup = btusb_setup_intel;
385a768c 2712 hdev->hw_error = btusb_hw_error_intel;
cb8d6597
MH		 2713 hdev->set_bdaddr = btusb_set_bdaddr_intel;
2714 }
dffd30ee 2715
cda0dd78
MH		 2716 if (id->driver_info & BTUSB_INTEL_NEW) {
2717 hdev->send = btusb_send_frame_intel;
2718 hdev->setup = btusb_setup_intel_new;
385a768c 2719 hdev->hw_error = btusb_hw_error_intel;
cda0dd78
MH		 2720 hdev->set_bdaddr = btusb_set_bdaddr_intel;
2721 }
2722
ae8df494
AK		 2723 if (id->driver_info & BTUSB_MARVELL)
2724 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
2725
661cf88a
MH		 2726 if (id->driver_info & BTUSB_SWAVE) {
2727 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
d57dbe77 2728 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
661cf88a 2729 }
d57dbe77 2730
40df783d
MH		 2731 if (id->driver_info & BTUSB_INTEL_BOOT)
2732 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2733
5859223e
TK		 2734 if (id->driver_info & BTUSB_ATH3012)
2735 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2736
893ba544
MH		 2737 if (id->driver_info & BTUSB_AMP) {
2738 /* AMP controllers do not support SCO packets */
2739 data->isoc = NULL;
2740 } else {
2741 /* Interface numbers are hardcoded in the specification */
2742 data->isoc = usb_ifnum_to_if(data->udev, 1);
2743 }
9bfa35fe 2744
7a9d4020 2745 if (!reset)
a6c511c6 2746 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
cfeb4145
MH		 2747
2748 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
2749 if (!disable_scofix)
2750 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
2751 }
2752
9bfa35fe
MH		 2753 if (id->driver_info & BTUSB_BROKEN_ISOC)
2754 data->isoc = NULL;
2755
7a9d4020
MH		 2756 if (id->driver_info & BTUSB_DIGIANSWER) {
2757 data->cmdreq_type = USB_TYPE_VENDOR;
a6c511c6 2758 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
7a9d4020
MH		 2759 }
2760
2761 if (id->driver_info & BTUSB_CSR) {
2762 struct usb_device *udev = data->udev;
81cac64b 2763 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
7a9d4020
MH		 2764
2765 /* Old firmware would otherwise execute USB reset */
81cac64b 2766 if (bcdDevice < 0x117)
a6c511c6 2767 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
81cac64b
MH		 2768
2769 /* Fake CSR devices with broken commands */
2770 if (bcdDevice <= 0x100)
2771 hdev->setup = btusb_setup_csr;
7a9d4020
MH		 2772 }
2773
cfeb4145 2774 if (id->driver_info & BTUSB_SNIFFER) {
9bfa35fe 2775 struct usb_device *udev = data->udev;
cfeb4145 2776
7a9d4020 2777 /* New sniffer firmware has crippled HCI interface */
cfeb4145
MH		 2778 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
2779 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2780 }
2781
3a5ef20c
MH		 2782 if (id->driver_info & BTUSB_INTEL_BOOT) {
2783 /* A bug in the bootloader causes that interrupt interface is
2784 * only enabled after receiving SetInterface(0, AltSetting=0).
2785 */
2786 err = usb_set_interface(data->udev, 0, 0);
2787 if (err < 0) {
2788 BT_ERR("failed to set interface 0, alt 0 %d", err);
2789 hci_free_dev(hdev);
2790 return err;
2791 }
2792 }
2793
9bfa35fe
MH		 2794 if (data->isoc) {
2795 err = usb_driver_claim_interface(&btusb_driver,
89e7533d 2796 data->isoc, data);
9bfa35fe
MH		 2797 if (err < 0) {
2798 hci_free_dev(hdev);
9bfa35fe
MH		 2799 return err;
2800 }
2801 }
2802
5e23b923
MH		 2803 err = hci_register_dev(hdev);
2804 if (err < 0) {
2805 hci_free_dev(hdev);
5e23b923
MH		 2806 return err;
2807 }
2808
2809 usb_set_intfdata(intf, data);
2810
2811 return 0;
2812}
2813
2814static void btusb_disconnect(struct usb_interface *intf)
2815{
2816 struct btusb_data *data = usb_get_intfdata(intf);
2817 struct hci_dev *hdev;
2818
2819 BT_DBG("intf %p", intf);
2820
2821 if (!data)
2822 return;
2823
2824 hdev = data->hdev;
5fbcd260
MH		 2825 usb_set_intfdata(data->intf, NULL);
2826
2827 if (data->isoc)
2828 usb_set_intfdata(data->isoc, NULL);
5e23b923
MH		 2829
2830 hci_unregister_dev(hdev);
2831
5fbcd260
MH		 2832 if (intf == data->isoc)
2833 usb_driver_release_interface(&btusb_driver, data->intf);
2834 else if (data->isoc)
2835 usb_driver_release_interface(&btusb_driver, data->isoc);
2836
5e23b923
MH		 2837 hci_free_dev(hdev);
2838}
2839
7bee549e 2840#ifdef CONFIG_PM
6a88adf2
MH		 2841static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
2842{
2843 struct btusb_data *data = usb_get_intfdata(intf);
2844
2845 BT_DBG("intf %p", intf);
2846
2847 if (data->suspend_count++)
2848 return 0;
2849
7bee549e 2850 spin_lock_irq(&data->txlock);
5b1b0b81 2851 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
7bee549e
ON		 2852 set_bit(BTUSB_SUSPENDING, &data->flags);
2853 spin_unlock_irq(&data->txlock);
2854 } else {
2855 spin_unlock_irq(&data->txlock);
2856 data->suspend_count--;
2857 return -EBUSY;
2858 }
2859
6a88adf2
MH		 2860 cancel_work_sync(&data->work);
2861
7bee549e 2862 btusb_stop_traffic(data);
6a88adf2
MH		 2863 usb_kill_anchored_urbs(&data->tx_anchor);
2864
6a88adf2
MH		 2865 return 0;
2866}
2867
7bee549e
ON		 2868static void play_deferred(struct btusb_data *data)
2869{
2870 struct urb *urb;
2871 int err;
2872
2873 while ((urb = usb_get_from_anchor(&data->deferred))) {
2874 err = usb_submit_urb(urb, GFP_ATOMIC);
2875 if (err < 0)
2876 break;
2877
2878 data->tx_in_flight++;
2879 }
2880 usb_scuttle_anchored_urbs(&data->deferred);
2881}
2882
6a88adf2
MH		 2883static int btusb_resume(struct usb_interface *intf)
2884{
2885 struct btusb_data *data = usb_get_intfdata(intf);
2886 struct hci_dev *hdev = data->hdev;
7bee549e 2887 int err = 0;
6a88adf2
MH		 2888
2889 BT_DBG("intf %p", intf);
2890
2891 if (--data->suspend_count)
2892 return 0;
2893
2894 if (!test_bit(HCI_RUNNING, &hdev->flags))
7bee549e 2895 goto done;
6a88adf2
MH		 2896
2897 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
2898 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
2899 if (err < 0) {
2900 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
7bee549e 2901 goto failed;
6a88adf2
MH		 2902 }
2903 }
2904
2905 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
43c2e57f
MH		 2906 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
2907 if (err < 0) {
6a88adf2 2908 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
7bee549e
ON		 2909 goto failed;
2910 }
2911
2912 btusb_submit_bulk_urb(hdev, GFP_NOIO);
6a88adf2
MH		 2913 }
2914
2915 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
2916 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
2917 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2918 else
2919 btusb_submit_isoc_urb(hdev, GFP_NOIO);
2920 }
2921
7bee549e
ON		 2922 spin_lock_irq(&data->txlock);
2923 play_deferred(data);
2924 clear_bit(BTUSB_SUSPENDING, &data->flags);
2925 spin_unlock_irq(&data->txlock);
2926 schedule_work(&data->work);
2927
6a88adf2 2928 return 0;
7bee549e
ON		 2929
2930failed:
2931 usb_scuttle_anchored_urbs(&data->deferred);
2932done:
2933 spin_lock_irq(&data->txlock);
2934 clear_bit(BTUSB_SUSPENDING, &data->flags);
2935 spin_unlock_irq(&data->txlock);
2936
2937 return err;
6a88adf2 2938}
7bee549e 2939#endif
6a88adf2 2940
5e23b923
MH		 2941static struct usb_driver btusb_driver = {
2942 .name = "btusb",
2943 .probe = btusb_probe,
2944 .disconnect = btusb_disconnect,
7bee549e 2945#ifdef CONFIG_PM
6a88adf2
MH		 2946 .suspend = btusb_suspend,
2947 .resume = btusb_resume,
7bee549e 2948#endif
5e23b923 2949 .id_table = btusb_table,
7bee549e 2950 .supports_autosuspend = 1,
e1f12eb6 2951 .disable_hub_initiated_lpm = 1,
5e23b923
MH		 2952};
2953
93f1508c 2954module_usb_driver(btusb_driver);
5e23b923 2955
cfeb4145
MH		 2956module_param(disable_scofix, bool, 0644);
2957MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
2958
2959module_param(force_scofix, bool, 0644);
2960MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
2961
2962module_param(reset, bool, 0644);
2963MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
2964
5e23b923
MH		 2965MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
2966MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
2967MODULE_VERSION(VERSION);
2968MODULE_LICENSE("GPL");
Linux 6.x block layer and io_uring tree(s)