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Marcel Holtmann5e23b922007-10-20 14:12:34 +02001/*
2 *
3 * Generic Bluetooth USB driver
4 *
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +02005 * Copyright (C) 2005-2008 Marcel Holtmann <marcel@holtmann.org>
Marcel Holtmann5e23b922007-10-20 14:12:34 +02006 *
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24#include <linux/kernel.h>
25#include <linux/module.h>
26#include <linux/init.h>
27#include <linux/slab.h>
28#include <linux/types.h>
29#include <linux/sched.h>
30#include <linux/errno.h>
31#include <linux/skbuff.h>
32
33#include <linux/usb.h>
34
35#include <net/bluetooth/bluetooth.h>
36#include <net/bluetooth/hci_core.h>
37
Oliver Neukum7bee5492009-08-24 23:44:59 +020038#define VERSION "0.6"
Marcel Holtmanncfeb4142008-08-07 22:26:56 +020039
Rusty Russell90ab5ee2012-01-13 09:32:20 +103040static bool ignore_dga;
41static bool ignore_csr;
42static bool ignore_sniffer;
43static bool disable_scofix;
44static bool force_scofix;
Marcel Holtmann7a9d4022008-11-30 12:17:26 +010045
Rusty Russell90ab5ee2012-01-13 09:32:20 +103046static bool reset = 1;
Marcel Holtmanncfeb4142008-08-07 22:26:56 +020047
48static struct usb_driver btusb_driver;
49
50#define BTUSB_IGNORE 0x01
Marcel Holtmann7a9d4022008-11-30 12:17:26 +010051#define BTUSB_DIGIANSWER 0x02
52#define BTUSB_CSR 0x04
53#define BTUSB_SNIFFER 0x08
54#define BTUSB_BCM92035 0x10
55#define BTUSB_BROKEN_ISOC 0x20
56#define BTUSB_WRONG_SCO_MTU 0x40
Steven.Li2d25f8b2011-07-01 14:02:36 +080057#define BTUSB_ATH3012 0x80
Marcel Holtmann5e23b922007-10-20 14:12:34 +020058
59static struct usb_device_id btusb_table[] = {
60 /* Generic Bluetooth USB device */
61 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
62
Henrik Rydberg403c9eb2012-08-25 19:28:06 +020063 /* Apple-specific (Broadcom) devices */
64 { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
65
Oliver Neukumc510eae2011-09-21 11:41:45 +020066 /* Broadcom SoftSailing reporting vendor specific */
Don Zickus2e8b5062012-03-28 16:41:11 -040067 { USB_DEVICE(0x0a5c, 0x21e1) },
Oliver Neukumc510eae2011-09-21 11:41:45 +020068
Nobuhiro Iwamatsu3cd01972010-08-20 16:24:07 +090069 /* Apple MacBookPro 7,1 */
70 { USB_DEVICE(0x05ac, 0x8213) },
71
Cyril Lacoux0a79f672010-07-14 10:29:27 +040072 /* Apple iMac11,1 */
73 { USB_DEVICE(0x05ac, 0x8215) },
74
Nobuhiro Iwamatsu9c047152010-08-20 16:24:06 +090075 /* Apple MacBookPro6,2 */
76 { USB_DEVICE(0x05ac, 0x8218) },
77
Edgar (gimli) Hucek3e3ede72010-11-04 08:04:33 +010078 /* Apple MacBookAir3,1, MacBookAir3,2 */
79 { USB_DEVICE(0x05ac, 0x821b) },
80
Pieter-Augustijn Van Malleghema63b7232011-09-07 02:28:10 -040081 /* Apple MacBookAir4,1 */
82 { USB_DEVICE(0x05ac, 0x821f) },
83
Marc-Antoine Perennou88d377b2011-03-24 14:51:21 -030084 /* Apple MacBookPro8,2 */
85 { USB_DEVICE(0x05ac, 0x821a) },
86
Jurgen Kramerf78b6822011-09-04 18:01:42 +020087 /* Apple MacMini5,1 */
88 { USB_DEVICE(0x05ac, 0x8281) },
89
Marcel Holtmanncfeb4142008-08-07 22:26:56 +020090 /* AVM BlueFRITZ! USB v2.0 */
91 { USB_DEVICE(0x057c, 0x3800) },
92
93 /* Bluetooth Ultraport Module from IBM */
94 { USB_DEVICE(0x04bf, 0x030a) },
95
96 /* ALPS Modules with non-standard id */
97 { USB_DEVICE(0x044e, 0x3001) },
98 { USB_DEVICE(0x044e, 0x3002) },
99
100 /* Ericsson with non-standard id */
101 { USB_DEVICE(0x0bdb, 0x1002) },
102
103 /* Canyon CN-BTU1 with HID interfaces */
Marcel Holtmann7a9d4022008-11-30 12:17:26 +0100104 { USB_DEVICE(0x0c10, 0x0000) },
Marcel Holtmanncfeb4142008-08-07 22:26:56 +0200105
Wen-chien Jesse Sungd13431c2011-11-08 14:30:22 +0800106 /* Broadcom BCM20702A0 */
Jaroslav Resleradebaa72012-09-11 17:25:32 +0800107 { USB_DEVICE(0x04ca, 0x2003) },
Manoj Iyer79cd7602012-04-09 09:22:28 -0500108 { USB_DEVICE(0x0489, 0xe042) },
Wen-chien Jesse Sungd13431c2011-11-08 14:30:22 +0800109 { USB_DEVICE(0x413c, 0x8197) },
110
Steven Harms98514032012-04-13 14:45:55 -0400111 /* Foxconn - Hon Hai */
Gustavo Padovanec5bf542012-08-15 01:38:11 -0300112 { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) },
Steven Harms98514032012-04-13 14:45:55 -0400113
Gustavo Padovan004251b2012-08-06 15:36:49 -0300114 /*Broadcom devices with vendor specific id */
115 { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) },
116
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200117 { } /* Terminating entry */
118};
119
120MODULE_DEVICE_TABLE(usb, btusb_table);
121
122static struct usb_device_id blacklist_table[] = {
Marcel Holtmanncfeb4142008-08-07 22:26:56 +0200123 /* CSR BlueCore devices */
124 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
125
126 /* Broadcom BCM2033 without firmware */
127 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
128
Bala Shanmugambe931122010-11-26 17:35:46 +0530129 /* Atheros 3011 with sflash firmware */
130 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
Marek Vasut7f801fc2012-06-08 14:32:50 +0200131 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
Andy Ross2a7bccc2011-05-09 16:11:16 -0700132 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
Ricardo Mendoza8e7c3d22011-07-13 16:04:29 +0100133 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
Keng-Yu Lin6b6ba882011-11-30 18:32:37 +0800134 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
Marcos Chaparro2145cea2012-11-06 16:19:11 -0300135 { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
Bala Shanmugambe931122010-11-26 17:35:46 +0530136
Cho, Yu-Chen509e7862011-01-26 17:10:59 +0800137 /* Atheros AR9285 Malbec with sflash firmware */
138 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
139
Bala Shanmugamd9f51b52011-02-11 15:38:53 +0530140 /* Atheros 3012 with sflash firmware */
Ming Lei42c4b742013-03-15 11:00:39 +0800141 { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
Steven.Li2d25f8b2011-07-01 14:02:36 +0800142 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
Cho, Yu-Chen07c0ea82012-03-14 22:01:21 +0200143 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
Ming Leic643e012013-03-18 23:45:11 +0800144 { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
Eran9498ba72011-12-05 22:15:29 +0000145 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
AceLan Kao55ed7d42012-03-28 10:25:36 +0800146 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
AceLan Kao87522a42012-04-13 17:39:57 +0800147 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
AceLan Kaoac713112012-04-19 14:53:45 +0800148 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
Giancarlo Formicucciac2f15c32012-06-10 08:33:11 +0200149 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
Peng Chen4126da52012-08-01 10:11:59 +0800150 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
Bala Shanmugamd9f51b52011-02-11 15:38:53 +0530151
Cho, Yu-Chene9036e32011-02-15 10:20:07 +0800152 /* Atheros AR5BBU12 with sflash firmware */
153 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
154
Michael Gruetznera1144ca2012-05-02 22:33:40 +0200155 /* Atheros AR5BBU12 with sflash firmware */
156 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
Yevgeniy Melnichuk1403b362012-08-07 19:48:10 +0530157 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
Michael Gruetznera1144ca2012-05-02 22:33:40 +0200158
Marcel Holtmanncfeb4142008-08-07 22:26:56 +0200159 /* Broadcom BCM2035 */
Marcel Holtmann7a9d4022008-11-30 12:17:26 +0100160 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
161 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
162 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
Marcel Holtmanncfeb4142008-08-07 22:26:56 +0200163
164 /* Broadcom BCM2045 */
Marcel Holtmann7a9d4022008-11-30 12:17:26 +0100165 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
166 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
Marcel Holtmannbdbef3d2008-09-23 00:16:35 +0200167
Marcel Holtmanncfeb4142008-08-07 22:26:56 +0200168 /* IBM/Lenovo ThinkPad with Broadcom chip */
Marcel Holtmann7a9d4022008-11-30 12:17:26 +0100169 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
170 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
Marcel Holtmanncfeb4142008-08-07 22:26:56 +0200171
172 /* HP laptop with Broadcom chip */
Marcel Holtmann7a9d4022008-11-30 12:17:26 +0100173 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
Marcel Holtmanncfeb4142008-08-07 22:26:56 +0200174
175 /* Dell laptop with Broadcom chip */
Marcel Holtmann7a9d4022008-11-30 12:17:26 +0100176 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
Marcel Holtmanncfeb4142008-08-07 22:26:56 +0200177
Marcel Holtmann5ddd4a62008-11-30 12:17:27 +0100178 /* Dell Wireless 370 and 410 devices */
Marcel Holtmann7a9d4022008-11-30 12:17:26 +0100179 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
Marcel Holtmann5ddd4a62008-11-30 12:17:27 +0100180 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
Marcel Holtmanncfeb4142008-08-07 22:26:56 +0200181
Marcel Holtmann7a9d4022008-11-30 12:17:26 +0100182 /* Belkin F8T012 and F8T013 devices */
183 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
184 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
Marcel Holtmanncfeb4142008-08-07 22:26:56 +0200185
Marcel Holtmann5ddd4a62008-11-30 12:17:27 +0100186 /* Asus WL-BTD202 device */
187 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
188
189 /* Kensington Bluetooth USB adapter */
190 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
191
Marcel Holtmanncfeb4142008-08-07 22:26:56 +0200192 /* RTX Telecom based adapters with buggy SCO support */
193 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
194 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
195
196 /* CONWISE Technology based adapters with buggy SCO support */
197 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
198
Marcel Holtmanncfeb4142008-08-07 22:26:56 +0200199 /* Digianswer devices */
200 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
201 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
202
203 /* CSR BlueCore Bluetooth Sniffer */
204 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
205
206 /* Frontline ComProbe Bluetooth Sniffer */
207 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
208
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200209 { } /* Terminating entry */
210};
211
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +0200212#define BTUSB_MAX_ISOC_FRAMES 10
213
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200214#define BTUSB_INTR_RUNNING 0
215#define BTUSB_BULK_RUNNING 1
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +0200216#define BTUSB_ISOC_RUNNING 2
Oliver Neukum7bee5492009-08-24 23:44:59 +0200217#define BTUSB_SUSPENDING 3
Gustavo F. Padovan08b8b6c2010-07-16 17:20:33 -0300218#define BTUSB_DID_ISO_RESUME 4
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200219
220struct btusb_data {
221 struct hci_dev *hdev;
222 struct usb_device *udev;
Marcel Holtmann5fbcd262008-09-23 00:16:36 +0200223 struct usb_interface *intf;
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +0200224 struct usb_interface *isoc;
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200225
226 spinlock_t lock;
227
228 unsigned long flags;
229
230 struct work_struct work;
Oliver Neukum7bee5492009-08-24 23:44:59 +0200231 struct work_struct waker;
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200232
233 struct usb_anchor tx_anchor;
234 struct usb_anchor intr_anchor;
235 struct usb_anchor bulk_anchor;
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +0200236 struct usb_anchor isoc_anchor;
Oliver Neukum7bee5492009-08-24 23:44:59 +0200237 struct usb_anchor deferred;
238 int tx_in_flight;
239 spinlock_t txlock;
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200240
241 struct usb_endpoint_descriptor *intr_ep;
242 struct usb_endpoint_descriptor *bulk_tx_ep;
243 struct usb_endpoint_descriptor *bulk_rx_ep;
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +0200244 struct usb_endpoint_descriptor *isoc_tx_ep;
245 struct usb_endpoint_descriptor *isoc_rx_ep;
246
Marcel Holtmann7a9d4022008-11-30 12:17:26 +0100247 __u8 cmdreq_type;
248
Marcel Holtmann43c2e572009-02-04 17:41:38 +0100249 unsigned int sco_num;
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +0200250 int isoc_altsetting;
Marcel Holtmann6a88adf2008-11-30 12:17:14 +0100251 int suspend_count;
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200252};
253
Oliver Neukum7bee5492009-08-24 23:44:59 +0200254static int inc_tx(struct btusb_data *data)
255{
256 unsigned long flags;
257 int rv;
258
259 spin_lock_irqsave(&data->txlock, flags);
260 rv = test_bit(BTUSB_SUSPENDING, &data->flags);
261 if (!rv)
262 data->tx_in_flight++;
263 spin_unlock_irqrestore(&data->txlock, flags);
264
265 return rv;
266}
267
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200268static void btusb_intr_complete(struct urb *urb)
269{
270 struct hci_dev *hdev = urb->context;
David Herrmann155961e2012-02-09 21:58:32 +0100271 struct btusb_data *data = hci_get_drvdata(hdev);
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200272 int err;
273
274 BT_DBG("%s urb %p status %d count %d", hdev->name,
275 urb, urb->status, urb->actual_length);
276
277 if (!test_bit(HCI_RUNNING, &hdev->flags))
278 return;
279
280 if (urb->status == 0) {
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +0200281 hdev->stat.byte_rx += urb->actual_length;
282
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200283 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
284 urb->transfer_buffer,
285 urb->actual_length) < 0) {
286 BT_ERR("%s corrupted event packet", hdev->name);
287 hdev->stat.err_rx++;
288 }
289 }
290
291 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
292 return;
293
Oliver Neukum7bee5492009-08-24 23:44:59 +0200294 usb_mark_last_busy(data->udev);
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200295 usb_anchor_urb(urb, &data->intr_anchor);
296
297 err = usb_submit_urb(urb, GFP_ATOMIC);
298 if (err < 0) {
Paul Bolle4935f1c2011-08-09 17:16:28 +0200299 /* -EPERM: urb is being killed;
300 * -ENODEV: device got disconnected */
301 if (err != -EPERM && err != -ENODEV)
Stefan Seyfried61faddf2010-11-30 21:49:08 +0100302 BT_ERR("%s urb %p failed to resubmit (%d)",
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200303 hdev->name, urb, -err);
304 usb_unanchor_urb(urb);
305 }
306}
307
Marcel Holtmann2eda66f2008-11-30 12:17:10 +0100308static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200309{
David Herrmann155961e2012-02-09 21:58:32 +0100310 struct btusb_data *data = hci_get_drvdata(hdev);
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200311 struct urb *urb;
312 unsigned char *buf;
313 unsigned int pipe;
314 int err, size;
315
316 BT_DBG("%s", hdev->name);
317
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +0200318 if (!data->intr_ep)
319 return -ENODEV;
320
Marcel Holtmann2eda66f2008-11-30 12:17:10 +0100321 urb = usb_alloc_urb(0, mem_flags);
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200322 if (!urb)
323 return -ENOMEM;
324
325 size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
326
Marcel Holtmann2eda66f2008-11-30 12:17:10 +0100327 buf = kmalloc(size, mem_flags);
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200328 if (!buf) {
329 usb_free_urb(urb);
330 return -ENOMEM;
331 }
332
333 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
334
335 usb_fill_int_urb(urb, data->udev, pipe, buf, size,
336 btusb_intr_complete, hdev,
337 data->intr_ep->bInterval);
338
339 urb->transfer_flags |= URB_FREE_BUFFER;
340
341 usb_anchor_urb(urb, &data->intr_anchor);
342
Marcel Holtmann2eda66f2008-11-30 12:17:10 +0100343 err = usb_submit_urb(urb, mem_flags);
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200344 if (err < 0) {
Paul Bolled4b8d1c2011-10-09 12:12:22 +0200345 if (err != -EPERM && err != -ENODEV)
346 BT_ERR("%s urb %p submission failed (%d)",
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200347 hdev->name, urb, -err);
348 usb_unanchor_urb(urb);
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200349 }
350
351 usb_free_urb(urb);
352
353 return err;
354}
355
356static void btusb_bulk_complete(struct urb *urb)
357{
358 struct hci_dev *hdev = urb->context;
David Herrmann155961e2012-02-09 21:58:32 +0100359 struct btusb_data *data = hci_get_drvdata(hdev);
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200360 int err;
361
362 BT_DBG("%s urb %p status %d count %d", hdev->name,
363 urb, urb->status, urb->actual_length);
364
365 if (!test_bit(HCI_RUNNING, &hdev->flags))
366 return;
367
368 if (urb->status == 0) {
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +0200369 hdev->stat.byte_rx += urb->actual_length;
370
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200371 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
372 urb->transfer_buffer,
373 urb->actual_length) < 0) {
374 BT_ERR("%s corrupted ACL packet", hdev->name);
375 hdev->stat.err_rx++;
376 }
377 }
378
379 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
380 return;
381
382 usb_anchor_urb(urb, &data->bulk_anchor);
Oliver Neukum652fd782009-12-16 19:23:43 +0100383 usb_mark_last_busy(data->udev);
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200384
385 err = usb_submit_urb(urb, GFP_ATOMIC);
386 if (err < 0) {
Paul Bolle4935f1c2011-08-09 17:16:28 +0200387 /* -EPERM: urb is being killed;
388 * -ENODEV: device got disconnected */
389 if (err != -EPERM && err != -ENODEV)
Stefan Seyfried61faddf2010-11-30 21:49:08 +0100390 BT_ERR("%s urb %p failed to resubmit (%d)",
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200391 hdev->name, urb, -err);
392 usb_unanchor_urb(urb);
393 }
394}
395
Marcel Holtmann2eda66f2008-11-30 12:17:10 +0100396static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200397{
David Herrmann155961e2012-02-09 21:58:32 +0100398 struct btusb_data *data = hci_get_drvdata(hdev);
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200399 struct urb *urb;
400 unsigned char *buf;
401 unsigned int pipe;
Vikram Kandukuri290ba202009-07-02 14:31:59 +0530402 int err, size = HCI_MAX_FRAME_SIZE;
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200403
404 BT_DBG("%s", hdev->name);
405
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +0200406 if (!data->bulk_rx_ep)
407 return -ENODEV;
408
Marcel Holtmann2eda66f2008-11-30 12:17:10 +0100409 urb = usb_alloc_urb(0, mem_flags);
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200410 if (!urb)
411 return -ENOMEM;
412
Marcel Holtmann2eda66f2008-11-30 12:17:10 +0100413 buf = kmalloc(size, mem_flags);
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200414 if (!buf) {
415 usb_free_urb(urb);
416 return -ENOMEM;
417 }
418
419 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
420
421 usb_fill_bulk_urb(urb, data->udev, pipe,
422 buf, size, btusb_bulk_complete, hdev);
423
424 urb->transfer_flags |= URB_FREE_BUFFER;
425
Oliver Neukum7bee5492009-08-24 23:44:59 +0200426 usb_mark_last_busy(data->udev);
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200427 usb_anchor_urb(urb, &data->bulk_anchor);
428
Marcel Holtmann2eda66f2008-11-30 12:17:10 +0100429 err = usb_submit_urb(urb, mem_flags);
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200430 if (err < 0) {
Paul Bolled4b8d1c2011-10-09 12:12:22 +0200431 if (err != -EPERM && err != -ENODEV)
432 BT_ERR("%s urb %p submission failed (%d)",
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200433 hdev->name, urb, -err);
434 usb_unanchor_urb(urb);
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200435 }
436
437 usb_free_urb(urb);
438
439 return err;
440}
441
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +0200442static void btusb_isoc_complete(struct urb *urb)
443{
444 struct hci_dev *hdev = urb->context;
David Herrmann155961e2012-02-09 21:58:32 +0100445 struct btusb_data *data = hci_get_drvdata(hdev);
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +0200446 int i, err;
447
448 BT_DBG("%s urb %p status %d count %d", hdev->name,
449 urb, urb->status, urb->actual_length);
450
451 if (!test_bit(HCI_RUNNING, &hdev->flags))
452 return;
453
454 if (urb->status == 0) {
455 for (i = 0; i < urb->number_of_packets; i++) {
456 unsigned int offset = urb->iso_frame_desc[i].offset;
457 unsigned int length = urb->iso_frame_desc[i].actual_length;
458
459 if (urb->iso_frame_desc[i].status)
460 continue;
461
462 hdev->stat.byte_rx += length;
463
464 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
465 urb->transfer_buffer + offset,
466 length) < 0) {
467 BT_ERR("%s corrupted SCO packet", hdev->name);
468 hdev->stat.err_rx++;
469 }
470 }
471 }
472
473 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
474 return;
475
476 usb_anchor_urb(urb, &data->isoc_anchor);
477
478 err = usb_submit_urb(urb, GFP_ATOMIC);
479 if (err < 0) {
Paul Bolle4935f1c2011-08-09 17:16:28 +0200480 /* -EPERM: urb is being killed;
481 * -ENODEV: device got disconnected */
482 if (err != -EPERM && err != -ENODEV)
Stefan Seyfried61faddf2010-11-30 21:49:08 +0100483 BT_ERR("%s urb %p failed to resubmit (%d)",
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +0200484 hdev->name, urb, -err);
485 usb_unanchor_urb(urb);
486 }
487}
488
Jesper Juhl42b16b32011-01-17 00:09:38 +0100489static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +0200490{
491 int i, offset = 0;
492
493 BT_DBG("len %d mtu %d", len, mtu);
494
495 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
496 i++, offset += mtu, len -= mtu) {
497 urb->iso_frame_desc[i].offset = offset;
498 urb->iso_frame_desc[i].length = mtu;
499 }
500
501 if (len && i < BTUSB_MAX_ISOC_FRAMES) {
502 urb->iso_frame_desc[i].offset = offset;
503 urb->iso_frame_desc[i].length = len;
504 i++;
505 }
506
507 urb->number_of_packets = i;
508}
509
Marcel Holtmann2eda66f2008-11-30 12:17:10 +0100510static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +0200511{
David Herrmann155961e2012-02-09 21:58:32 +0100512 struct btusb_data *data = hci_get_drvdata(hdev);
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +0200513 struct urb *urb;
514 unsigned char *buf;
515 unsigned int pipe;
516 int err, size;
517
518 BT_DBG("%s", hdev->name);
519
520 if (!data->isoc_rx_ep)
521 return -ENODEV;
522
Marcel Holtmann2eda66f2008-11-30 12:17:10 +0100523 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +0200524 if (!urb)
525 return -ENOMEM;
526
527 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
528 BTUSB_MAX_ISOC_FRAMES;
529
Marcel Holtmann2eda66f2008-11-30 12:17:10 +0100530 buf = kmalloc(size, mem_flags);
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +0200531 if (!buf) {
532 usb_free_urb(urb);
533 return -ENOMEM;
534 }
535
536 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
537
Bing Zhaofa0fb932011-12-20 18:19:00 -0800538 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
539 hdev, data->isoc_rx_ep->bInterval);
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +0200540
541 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +0200542
543 __fill_isoc_descriptor(urb, size,
544 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
545
546 usb_anchor_urb(urb, &data->isoc_anchor);
547
Marcel Holtmann2eda66f2008-11-30 12:17:10 +0100548 err = usb_submit_urb(urb, mem_flags);
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +0200549 if (err < 0) {
Paul Bolled4b8d1c2011-10-09 12:12:22 +0200550 if (err != -EPERM && err != -ENODEV)
551 BT_ERR("%s urb %p submission failed (%d)",
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +0200552 hdev->name, urb, -err);
553 usb_unanchor_urb(urb);
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +0200554 }
555
556 usb_free_urb(urb);
557
558 return err;
559}
560
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200561static void btusb_tx_complete(struct urb *urb)
562{
563 struct sk_buff *skb = urb->context;
564 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
David Herrmann155961e2012-02-09 21:58:32 +0100565 struct btusb_data *data = hci_get_drvdata(hdev);
Oliver Neukum7bee5492009-08-24 23:44:59 +0200566
567 BT_DBG("%s urb %p status %d count %d", hdev->name,
568 urb, urb->status, urb->actual_length);
569
570 if (!test_bit(HCI_RUNNING, &hdev->flags))
571 goto done;
572
573 if (!urb->status)
574 hdev->stat.byte_tx += urb->transfer_buffer_length;
575 else
576 hdev->stat.err_tx++;
577
578done:
579 spin_lock(&data->txlock);
580 data->tx_in_flight--;
581 spin_unlock(&data->txlock);
582
583 kfree(urb->setup_packet);
584
585 kfree_skb(skb);
586}
587
588static void btusb_isoc_tx_complete(struct urb *urb)
589{
590 struct sk_buff *skb = urb->context;
591 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200592
593 BT_DBG("%s urb %p status %d count %d", hdev->name,
594 urb, urb->status, urb->actual_length);
595
596 if (!test_bit(HCI_RUNNING, &hdev->flags))
597 goto done;
598
599 if (!urb->status)
600 hdev->stat.byte_tx += urb->transfer_buffer_length;
601 else
602 hdev->stat.err_tx++;
603
604done:
605 kfree(urb->setup_packet);
606
607 kfree_skb(skb);
608}
609
610static int btusb_open(struct hci_dev *hdev)
611{
David Herrmann155961e2012-02-09 21:58:32 +0100612 struct btusb_data *data = hci_get_drvdata(hdev);
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200613 int err;
614
615 BT_DBG("%s", hdev->name);
616
Oliver Neukum7bee5492009-08-24 23:44:59 +0200617 err = usb_autopm_get_interface(data->intf);
618 if (err < 0)
619 return err;
620
621 data->intf->needs_remote_wakeup = 1;
622
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200623 if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
Oliver Neukum7bee5492009-08-24 23:44:59 +0200624 goto done;
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200625
626 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
Oliver Neukum7bee5492009-08-24 23:44:59 +0200627 goto done;
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200628
Marcel Holtmann2eda66f2008-11-30 12:17:10 +0100629 err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
Marcel Holtmann43c2e572009-02-04 17:41:38 +0100630 if (err < 0)
631 goto failed;
632
633 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200634 if (err < 0) {
Marcel Holtmann43c2e572009-02-04 17:41:38 +0100635 usb_kill_anchored_urbs(&data->intr_anchor);
636 goto failed;
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200637 }
638
Marcel Holtmann43c2e572009-02-04 17:41:38 +0100639 set_bit(BTUSB_BULK_RUNNING, &data->flags);
640 btusb_submit_bulk_urb(hdev, GFP_KERNEL);
641
Oliver Neukum7bee5492009-08-24 23:44:59 +0200642done:
643 usb_autopm_put_interface(data->intf);
Marcel Holtmann43c2e572009-02-04 17:41:38 +0100644 return 0;
645
646failed:
647 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
648 clear_bit(HCI_RUNNING, &hdev->flags);
Oliver Neukum7bee5492009-08-24 23:44:59 +0200649 usb_autopm_put_interface(data->intf);
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200650 return err;
651}
652
Oliver Neukum7bee5492009-08-24 23:44:59 +0200653static void btusb_stop_traffic(struct btusb_data *data)
654{
655 usb_kill_anchored_urbs(&data->intr_anchor);
656 usb_kill_anchored_urbs(&data->bulk_anchor);
657 usb_kill_anchored_urbs(&data->isoc_anchor);
658}
659
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200660static int btusb_close(struct hci_dev *hdev)
661{
David Herrmann155961e2012-02-09 21:58:32 +0100662 struct btusb_data *data = hci_get_drvdata(hdev);
Oliver Neukum7bee5492009-08-24 23:44:59 +0200663 int err;
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200664
665 BT_DBG("%s", hdev->name);
666
667 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
668 return 0;
669
Marcel Holtmanne8c3c3d2008-09-23 00:16:36 +0200670 cancel_work_sync(&data->work);
Linus Torvalds404291a2009-11-11 13:32:29 -0800671 cancel_work_sync(&data->waker);
Marcel Holtmanne8c3c3d2008-09-23 00:16:36 +0200672
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +0200673 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200674 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200675 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
Oliver Neukum7bee5492009-08-24 23:44:59 +0200676
677 btusb_stop_traffic(data);
678 err = usb_autopm_get_interface(data->intf);
679 if (err < 0)
Oliver Neukum7b8e2c12009-11-13 14:26:23 +0100680 goto failed;
Oliver Neukum7bee5492009-08-24 23:44:59 +0200681
682 data->intf->needs_remote_wakeup = 0;
683 usb_autopm_put_interface(data->intf);
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200684
Oliver Neukum7b8e2c12009-11-13 14:26:23 +0100685failed:
686 usb_scuttle_anchored_urbs(&data->deferred);
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200687 return 0;
688}
689
690static int btusb_flush(struct hci_dev *hdev)
691{
David Herrmann155961e2012-02-09 21:58:32 +0100692 struct btusb_data *data = hci_get_drvdata(hdev);
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200693
694 BT_DBG("%s", hdev->name);
695
696 usb_kill_anchored_urbs(&data->tx_anchor);
697
698 return 0;
699}
700
701static int btusb_send_frame(struct sk_buff *skb)
702{
703 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
David Herrmann155961e2012-02-09 21:58:32 +0100704 struct btusb_data *data = hci_get_drvdata(hdev);
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200705 struct usb_ctrlrequest *dr;
706 struct urb *urb;
707 unsigned int pipe;
708 int err;
709
710 BT_DBG("%s", hdev->name);
711
712 if (!test_bit(HCI_RUNNING, &hdev->flags))
713 return -EBUSY;
714
715 switch (bt_cb(skb)->pkt_type) {
716 case HCI_COMMAND_PKT:
717 urb = usb_alloc_urb(0, GFP_ATOMIC);
718 if (!urb)
719 return -ENOMEM;
720
721 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
722 if (!dr) {
723 usb_free_urb(urb);
724 return -ENOMEM;
725 }
726
Marcel Holtmann7a9d4022008-11-30 12:17:26 +0100727 dr->bRequestType = data->cmdreq_type;
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200728 dr->bRequest = 0;
729 dr->wIndex = 0;
730 dr->wValue = 0;
731 dr->wLength = __cpu_to_le16(skb->len);
732
733 pipe = usb_sndctrlpipe(data->udev, 0x00);
734
735 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
736 skb->data, skb->len, btusb_tx_complete, skb);
737
738 hdev->stat.cmd_tx++;
739 break;
740
741 case HCI_ACLDATA_PKT:
Peter Hurley9fd481e2011-07-14 08:48:32 -0400742 if (!data->bulk_tx_ep)
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +0200743 return -ENODEV;
744
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200745 urb = usb_alloc_urb(0, GFP_ATOMIC);
746 if (!urb)
747 return -ENOMEM;
748
749 pipe = usb_sndbulkpipe(data->udev,
750 data->bulk_tx_ep->bEndpointAddress);
751
752 usb_fill_bulk_urb(urb, data->udev, pipe,
753 skb->data, skb->len, btusb_tx_complete, skb);
754
755 hdev->stat.acl_tx++;
756 break;
757
758 case HCI_SCODATA_PKT:
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +0200759 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
760 return -ENODEV;
761
762 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
763 if (!urb)
764 return -ENOMEM;
765
766 pipe = usb_sndisocpipe(data->udev,
767 data->isoc_tx_ep->bEndpointAddress);
768
Gustavo F. Padovan03c2d0e2011-02-14 18:53:43 -0300769 usb_fill_int_urb(urb, data->udev, pipe,
770 skb->data, skb->len, btusb_isoc_tx_complete,
771 skb, data->isoc_tx_ep->bInterval);
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +0200772
773 urb->transfer_flags = URB_ISO_ASAP;
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +0200774
775 __fill_isoc_descriptor(urb, skb->len,
776 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
777
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200778 hdev->stat.sco_tx++;
Oliver Neukum7bee5492009-08-24 23:44:59 +0200779 goto skip_waking;
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200780
781 default:
782 return -EILSEQ;
783 }
784
Oliver Neukum7bee5492009-08-24 23:44:59 +0200785 err = inc_tx(data);
786 if (err) {
787 usb_anchor_urb(urb, &data->deferred);
788 schedule_work(&data->waker);
789 err = 0;
790 goto done;
791 }
792
793skip_waking:
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200794 usb_anchor_urb(urb, &data->tx_anchor);
795
796 err = usb_submit_urb(urb, GFP_ATOMIC);
797 if (err < 0) {
Paul Bolle5a9b80e2011-10-09 12:12:16 +0200798 if (err != -EPERM && err != -ENODEV)
799 BT_ERR("%s urb %p submission failed (%d)",
800 hdev->name, urb, -err);
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200801 kfree(urb->setup_packet);
802 usb_unanchor_urb(urb);
Oliver Neukum7bee5492009-08-24 23:44:59 +0200803 } else {
804 usb_mark_last_busy(data->udev);
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200805 }
806
Oliver Neukum7bee5492009-08-24 23:44:59 +0200807done:
Cong Wang54a8a792011-11-22 09:32:57 +0800808 usb_free_urb(urb);
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200809 return err;
810}
811
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200812static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
813{
David Herrmann155961e2012-02-09 21:58:32 +0100814 struct btusb_data *data = hci_get_drvdata(hdev);
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200815
816 BT_DBG("%s evt %d", hdev->name, evt);
817
Marcel Holtmann43c2e572009-02-04 17:41:38 +0100818 if (hdev->conn_hash.sco_num != data->sco_num) {
819 data->sco_num = hdev->conn_hash.sco_num;
820 schedule_work(&data->work);
Marcel Holtmanna780efa2008-11-30 12:17:12 +0100821 }
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200822}
823
Jesper Juhl42b16b32011-01-17 00:09:38 +0100824static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +0200825{
David Herrmann155961e2012-02-09 21:58:32 +0100826 struct btusb_data *data = hci_get_drvdata(hdev);
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +0200827 struct usb_interface *intf = data->isoc;
828 struct usb_endpoint_descriptor *ep_desc;
829 int i, err;
830
831 if (!data->isoc)
832 return -ENODEV;
833
834 err = usb_set_interface(data->udev, 1, altsetting);
835 if (err < 0) {
836 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
837 return err;
838 }
839
840 data->isoc_altsetting = altsetting;
841
842 data->isoc_tx_ep = NULL;
843 data->isoc_rx_ep = NULL;
844
845 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
846 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
847
848 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
849 data->isoc_tx_ep = ep_desc;
850 continue;
851 }
852
853 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
854 data->isoc_rx_ep = ep_desc;
855 continue;
856 }
857 }
858
859 if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
860 BT_ERR("%s invalid SCO descriptors", hdev->name);
861 return -ENODEV;
862 }
863
864 return 0;
865}
866
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200867static void btusb_work(struct work_struct *work)
868{
869 struct btusb_data *data = container_of(work, struct btusb_data, work);
870 struct hci_dev *hdev = data->hdev;
Oliver Neukum7bee5492009-08-24 23:44:59 +0200871 int err;
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200872
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +0200873 if (hdev->conn_hash.sco_num > 0) {
Gustavo F. Padovan08b8b6c2010-07-16 17:20:33 -0300874 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
Oliver Neukum8efdd0c2011-02-11 13:00:06 +0100875 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
Oliver Neukum7bee5492009-08-24 23:44:59 +0200876 if (err < 0) {
877 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
878 usb_kill_anchored_urbs(&data->isoc_anchor);
879 return;
880 }
881
Gustavo F. Padovan08b8b6c2010-07-16 17:20:33 -0300882 set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
Oliver Neukum7bee5492009-08-24 23:44:59 +0200883 }
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +0200884 if (data->isoc_altsetting != 2) {
885 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
886 usb_kill_anchored_urbs(&data->isoc_anchor);
887
888 if (__set_isoc_interface(hdev, 2) < 0)
889 return;
890 }
891
892 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
Marcel Holtmann2eda66f2008-11-30 12:17:10 +0100893 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +0200894 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
895 else
Marcel Holtmann2eda66f2008-11-30 12:17:10 +0100896 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +0200897 }
898 } else {
899 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
900 usb_kill_anchored_urbs(&data->isoc_anchor);
901
902 __set_isoc_interface(hdev, 0);
Gustavo F. Padovan08b8b6c2010-07-16 17:20:33 -0300903 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
Oliver Neukum8efdd0c2011-02-11 13:00:06 +0100904 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200905 }
906}
907
Oliver Neukum7bee5492009-08-24 23:44:59 +0200908static void btusb_waker(struct work_struct *work)
909{
910 struct btusb_data *data = container_of(work, struct btusb_data, waker);
911 int err;
912
913 err = usb_autopm_get_interface(data->intf);
914 if (err < 0)
915 return;
916
917 usb_autopm_put_interface(data->intf);
918}
919
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200920static int btusb_probe(struct usb_interface *intf,
921 const struct usb_device_id *id)
922{
923 struct usb_endpoint_descriptor *ep_desc;
924 struct btusb_data *data;
925 struct hci_dev *hdev;
926 int i, err;
927
928 BT_DBG("intf %p id %p", intf, id);
929
Marcel Holtmanncfeb4142008-08-07 22:26:56 +0200930 /* interface numbers are hardcoded in the spec */
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200931 if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
932 return -ENODEV;
933
934 if (!id->driver_info) {
935 const struct usb_device_id *match;
936 match = usb_match_id(intf, blacklist_table);
937 if (match)
938 id = match;
939 }
940
Marcel Holtmanncfeb4142008-08-07 22:26:56 +0200941 if (id->driver_info == BTUSB_IGNORE)
942 return -ENODEV;
943
944 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
945 return -ENODEV;
946
947 if (ignore_csr && id->driver_info & BTUSB_CSR)
948 return -ENODEV;
949
950 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
951 return -ENODEV;
952
Steven.Li2d25f8b2011-07-01 14:02:36 +0800953 if (id->driver_info & BTUSB_ATH3012) {
954 struct usb_device *udev = interface_to_usbdev(intf);
955
956 /* Old firmware would otherwise let ath3k driver load
957 * patch and sysconfig files */
958 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
959 return -ENODEV;
960 }
961
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200962 data = kzalloc(sizeof(*data), GFP_KERNEL);
963 if (!data)
964 return -ENOMEM;
965
966 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
967 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
968
969 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
970 data->intr_ep = ep_desc;
971 continue;
972 }
973
974 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
975 data->bulk_tx_ep = ep_desc;
976 continue;
977 }
978
979 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
980 data->bulk_rx_ep = ep_desc;
981 continue;
982 }
983 }
984
985 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
986 kfree(data);
987 return -ENODEV;
988 }
989
Marcel Holtmann7a9d4022008-11-30 12:17:26 +0100990 data->cmdreq_type = USB_TYPE_CLASS;
991
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200992 data->udev = interface_to_usbdev(intf);
Marcel Holtmann5fbcd262008-09-23 00:16:36 +0200993 data->intf = intf;
Marcel Holtmann5e23b922007-10-20 14:12:34 +0200994
995 spin_lock_init(&data->lock);
996
997 INIT_WORK(&data->work, btusb_work);
Oliver Neukum7bee5492009-08-24 23:44:59 +0200998 INIT_WORK(&data->waker, btusb_waker);
999 spin_lock_init(&data->txlock);
Marcel Holtmann5e23b922007-10-20 14:12:34 +02001000
1001 init_usb_anchor(&data->tx_anchor);
1002 init_usb_anchor(&data->intr_anchor);
1003 init_usb_anchor(&data->bulk_anchor);
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +02001004 init_usb_anchor(&data->isoc_anchor);
Oliver Neukum7bee5492009-08-24 23:44:59 +02001005 init_usb_anchor(&data->deferred);
Marcel Holtmann5e23b922007-10-20 14:12:34 +02001006
1007 hdev = hci_alloc_dev();
1008 if (!hdev) {
1009 kfree(data);
1010 return -ENOMEM;
1011 }
1012
Marcel Holtmannc13854ce2010-02-08 15:27:07 +01001013 hdev->bus = HCI_USB;
David Herrmann155961e2012-02-09 21:58:32 +01001014 hci_set_drvdata(hdev, data);
Marcel Holtmann5e23b922007-10-20 14:12:34 +02001015
1016 data->hdev = hdev;
1017
1018 SET_HCIDEV_DEV(hdev, &intf->dev);
1019
1020 hdev->open = btusb_open;
1021 hdev->close = btusb_close;
1022 hdev->flush = btusb_flush;
1023 hdev->send = btusb_send_frame;
Marcel Holtmann5e23b922007-10-20 14:12:34 +02001024 hdev->notify = btusb_notify;
1025
Marcel Holtmann7a9d4022008-11-30 12:17:26 +01001026 /* Interface numbers are hardcoded in the specification */
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +02001027 data->isoc = usb_ifnum_to_if(data->udev, 1);
1028
Marcel Holtmann7a9d4022008-11-30 12:17:26 +01001029 if (!reset)
1030 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
Marcel Holtmanncfeb4142008-08-07 22:26:56 +02001031
1032 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1033 if (!disable_scofix)
1034 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1035 }
1036
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +02001037 if (id->driver_info & BTUSB_BROKEN_ISOC)
1038 data->isoc = NULL;
1039
Marcel Holtmann7a9d4022008-11-30 12:17:26 +01001040 if (id->driver_info & BTUSB_DIGIANSWER) {
1041 data->cmdreq_type = USB_TYPE_VENDOR;
1042 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1043 }
1044
1045 if (id->driver_info & BTUSB_CSR) {
1046 struct usb_device *udev = data->udev;
1047
1048 /* Old firmware would otherwise execute USB reset */
1049 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1050 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1051 }
1052
Marcel Holtmanncfeb4142008-08-07 22:26:56 +02001053 if (id->driver_info & BTUSB_SNIFFER) {
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +02001054 struct usb_device *udev = data->udev;
Marcel Holtmanncfeb4142008-08-07 22:26:56 +02001055
Marcel Holtmann7a9d4022008-11-30 12:17:26 +01001056 /* New sniffer firmware has crippled HCI interface */
Marcel Holtmanncfeb4142008-08-07 22:26:56 +02001057 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1058 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +02001059
1060 data->isoc = NULL;
Marcel Holtmanncfeb4142008-08-07 22:26:56 +02001061 }
1062
1063 if (id->driver_info & BTUSB_BCM92035) {
1064 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1065 struct sk_buff *skb;
1066
1067 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1068 if (skb) {
1069 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1070 skb_queue_tail(&hdev->driver_init, skb);
1071 }
1072 }
Marcel Holtmann5e23b922007-10-20 14:12:34 +02001073
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +02001074 if (data->isoc) {
1075 err = usb_driver_claim_interface(&btusb_driver,
Marcel Holtmann5fbcd262008-09-23 00:16:36 +02001076 data->isoc, data);
Marcel Holtmann9bfa35f2008-08-18 13:23:52 +02001077 if (err < 0) {
1078 hci_free_dev(hdev);
1079 kfree(data);
1080 return err;
1081 }
1082 }
1083
Marcel Holtmann5e23b922007-10-20 14:12:34 +02001084 err = hci_register_dev(hdev);
1085 if (err < 0) {
1086 hci_free_dev(hdev);
1087 kfree(data);
1088 return err;
1089 }
1090
1091 usb_set_intfdata(intf, data);
1092
1093 return 0;
1094}
1095
1096static void btusb_disconnect(struct usb_interface *intf)
1097{
1098 struct btusb_data *data = usb_get_intfdata(intf);
1099 struct hci_dev *hdev;
1100
1101 BT_DBG("intf %p", intf);
1102
1103 if (!data)
1104 return;
1105
1106 hdev = data->hdev;
Marcel Holtmann5fbcd262008-09-23 00:16:36 +02001107 usb_set_intfdata(data->intf, NULL);
1108
1109 if (data->isoc)
1110 usb_set_intfdata(data->isoc, NULL);
Marcel Holtmann5e23b922007-10-20 14:12:34 +02001111
1112 hci_unregister_dev(hdev);
1113
Marcel Holtmann5fbcd262008-09-23 00:16:36 +02001114 if (intf == data->isoc)
1115 usb_driver_release_interface(&btusb_driver, data->intf);
1116 else if (data->isoc)
1117 usb_driver_release_interface(&btusb_driver, data->isoc);
1118
Marcel Holtmann5e23b922007-10-20 14:12:34 +02001119 hci_free_dev(hdev);
David Herrmann83810882012-01-07 15:47:16 +01001120 kfree(data);
Marcel Holtmann5e23b922007-10-20 14:12:34 +02001121}
1122
Oliver Neukum7bee5492009-08-24 23:44:59 +02001123#ifdef CONFIG_PM
Marcel Holtmann6a88adf2008-11-30 12:17:14 +01001124static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1125{
1126 struct btusb_data *data = usb_get_intfdata(intf);
1127
1128 BT_DBG("intf %p", intf);
1129
1130 if (data->suspend_count++)
1131 return 0;
1132
Oliver Neukum7bee5492009-08-24 23:44:59 +02001133 spin_lock_irq(&data->txlock);
Alan Stern5b1b0b82011-08-19 23:49:48 +02001134 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
Oliver Neukum7bee5492009-08-24 23:44:59 +02001135 set_bit(BTUSB_SUSPENDING, &data->flags);
1136 spin_unlock_irq(&data->txlock);
1137 } else {
1138 spin_unlock_irq(&data->txlock);
1139 data->suspend_count--;
1140 return -EBUSY;
1141 }
1142
Marcel Holtmann6a88adf2008-11-30 12:17:14 +01001143 cancel_work_sync(&data->work);
1144
Oliver Neukum7bee5492009-08-24 23:44:59 +02001145 btusb_stop_traffic(data);
Marcel Holtmann6a88adf2008-11-30 12:17:14 +01001146 usb_kill_anchored_urbs(&data->tx_anchor);
1147
Marcel Holtmann6a88adf2008-11-30 12:17:14 +01001148 return 0;
1149}
1150
Oliver Neukum7bee5492009-08-24 23:44:59 +02001151static void play_deferred(struct btusb_data *data)
1152{
1153 struct urb *urb;
1154 int err;
1155
1156 while ((urb = usb_get_from_anchor(&data->deferred))) {
1157 err = usb_submit_urb(urb, GFP_ATOMIC);
1158 if (err < 0)
1159 break;
1160
1161 data->tx_in_flight++;
1162 }
1163 usb_scuttle_anchored_urbs(&data->deferred);
1164}
1165
Marcel Holtmann6a88adf2008-11-30 12:17:14 +01001166static int btusb_resume(struct usb_interface *intf)
1167{
1168 struct btusb_data *data = usb_get_intfdata(intf);
1169 struct hci_dev *hdev = data->hdev;
Oliver Neukum7bee5492009-08-24 23:44:59 +02001170 int err = 0;
Marcel Holtmann6a88adf2008-11-30 12:17:14 +01001171
1172 BT_DBG("intf %p", intf);
1173
1174 if (--data->suspend_count)
1175 return 0;
1176
1177 if (!test_bit(HCI_RUNNING, &hdev->flags))
Oliver Neukum7bee5492009-08-24 23:44:59 +02001178 goto done;
Marcel Holtmann6a88adf2008-11-30 12:17:14 +01001179
1180 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1181 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1182 if (err < 0) {
1183 clear_bit(BTUSB_INTR_RUNNING, &data->flags);
Oliver Neukum7bee5492009-08-24 23:44:59 +02001184 goto failed;
Marcel Holtmann6a88adf2008-11-30 12:17:14 +01001185 }
1186 }
1187
1188 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
Marcel Holtmann43c2e572009-02-04 17:41:38 +01001189 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1190 if (err < 0) {
Marcel Holtmann6a88adf2008-11-30 12:17:14 +01001191 clear_bit(BTUSB_BULK_RUNNING, &data->flags);
Oliver Neukum7bee5492009-08-24 23:44:59 +02001192 goto failed;
1193 }
1194
1195 btusb_submit_bulk_urb(hdev, GFP_NOIO);
Marcel Holtmann6a88adf2008-11-30 12:17:14 +01001196 }
1197
1198 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1199 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1200 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1201 else
1202 btusb_submit_isoc_urb(hdev, GFP_NOIO);
1203 }
1204
Oliver Neukum7bee5492009-08-24 23:44:59 +02001205 spin_lock_irq(&data->txlock);
1206 play_deferred(data);
1207 clear_bit(BTUSB_SUSPENDING, &data->flags);
1208 spin_unlock_irq(&data->txlock);
1209 schedule_work(&data->work);
1210
Marcel Holtmann6a88adf2008-11-30 12:17:14 +01001211 return 0;
Oliver Neukum7bee5492009-08-24 23:44:59 +02001212
1213failed:
1214 usb_scuttle_anchored_urbs(&data->deferred);
1215done:
1216 spin_lock_irq(&data->txlock);
1217 clear_bit(BTUSB_SUSPENDING, &data->flags);
1218 spin_unlock_irq(&data->txlock);
1219
1220 return err;
Marcel Holtmann6a88adf2008-11-30 12:17:14 +01001221}
Oliver Neukum7bee5492009-08-24 23:44:59 +02001222#endif
Marcel Holtmann6a88adf2008-11-30 12:17:14 +01001223
Marcel Holtmann5e23b922007-10-20 14:12:34 +02001224static struct usb_driver btusb_driver = {
1225 .name = "btusb",
1226 .probe = btusb_probe,
1227 .disconnect = btusb_disconnect,
Oliver Neukum7bee5492009-08-24 23:44:59 +02001228#ifdef CONFIG_PM
Marcel Holtmann6a88adf2008-11-30 12:17:14 +01001229 .suspend = btusb_suspend,
1230 .resume = btusb_resume,
Oliver Neukum7bee5492009-08-24 23:44:59 +02001231#endif
Marcel Holtmann5e23b922007-10-20 14:12:34 +02001232 .id_table = btusb_table,
Oliver Neukum7bee5492009-08-24 23:44:59 +02001233 .supports_autosuspend = 1,
Marcel Holtmann5e23b922007-10-20 14:12:34 +02001234};
1235
Greg Kroah-Hartman93f15082011-11-18 09:47:34 -08001236module_usb_driver(btusb_driver);
Marcel Holtmann5e23b922007-10-20 14:12:34 +02001237
Marcel Holtmanncfeb4142008-08-07 22:26:56 +02001238module_param(ignore_dga, bool, 0644);
1239MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1240
1241module_param(ignore_csr, bool, 0644);
1242MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1243
1244module_param(ignore_sniffer, bool, 0644);
1245MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1246
1247module_param(disable_scofix, bool, 0644);
1248MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1249
1250module_param(force_scofix, bool, 0644);
1251MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1252
1253module_param(reset, bool, 0644);
1254MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1255
Marcel Holtmann5e23b922007-10-20 14:12:34 +02001256MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1257MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1258MODULE_VERSION(VERSION);
1259MODULE_LICENSE("GPL");