blob: c255e77282ada03e5003ce98b680a8c4b4edfa84 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * cdc-acm.c
3 *
4 * Copyright (c) 1999 Armin Fuerst <fuerst@in.tum.de>
Pavel Macheka2531292010-07-18 14:27:13 +02005 * Copyright (c) 1999 Pavel Machek <pavel@ucw.cz>
Linus Torvalds1da177e2005-04-16 15:20:36 -07006 * Copyright (c) 1999 Johannes Erdfelt <johannes@erdfelt.com>
7 * Copyright (c) 2000 Vojtech Pavlik <vojtech@suse.cz>
8 * Copyright (c) 2004 Oliver Neukum <oliver@neukum.name>
David Kubicek61a87ad2005-11-01 18:51:34 +01009 * Copyright (c) 2005 David Kubicek <dave@awk.cz>
Johan Hovold088c64f2011-03-25 11:06:02 +010010 * Copyright (c) 2011 Johan Hovold <jhovold@gmail.com>
Linus Torvalds1da177e2005-04-16 15:20:36 -070011 *
12 * USB Abstract Control Model driver for USB modems and ISDN adapters
13 *
14 * Sponsored by SuSE
15 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070016 * This program is free software; you can redistribute it and/or modify
17 * it under the terms of the GNU General Public License as published by
18 * the Free Software Foundation; either version 2 of the License, or
19 * (at your option) any later version.
20 *
21 * This program is distributed in the hope that it will be useful,
22 * but WITHOUT ANY WARRANTY; without even the implied warranty of
23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 * GNU General Public License for more details.
25 *
26 * You should have received a copy of the GNU General Public License
27 * along with this program; if not, write to the Free Software
28 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
29 */
30
31#undef DEBUG
David Brownelle5fbab52008-08-06 18:46:10 -070032#undef VERBOSE_DEBUG
Linus Torvalds1da177e2005-04-16 15:20:36 -070033
34#include <linux/kernel.h>
35#include <linux/errno.h>
36#include <linux/init.h>
37#include <linux/slab.h>
38#include <linux/tty.h>
Oliver Neukum7af25b42009-09-08 23:51:28 +020039#include <linux/serial.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070040#include <linux/tty_driver.h>
41#include <linux/tty_flip.h>
42#include <linux/module.h>
Arjan van de Ven4186ecf2006-01-11 15:55:29 +010043#include <linux/mutex.h>
Alan Cox10077d42009-06-11 12:36:09 +010044#include <linux/uaccess.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070045#include <linux/usb.h>
David Brownella8c28f22006-06-13 09:57:47 -070046#include <linux/usb/cdc.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070047#include <asm/byteorder.h>
48#include <asm/unaligned.h>
David Kubicek61a87ad2005-11-01 18:51:34 +010049#include <linux/list.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070050
51#include "cdc-acm.h"
52
David Brownelle5fbab52008-08-06 18:46:10 -070053
Johan Hovold088c64f2011-03-25 11:06:02 +010054#define DRIVER_AUTHOR "Armin Fuerst, Pavel Machek, Johannes Erdfelt, Vojtech Pavlik, David Kubicek, Johan Hovold"
Linus Torvalds1da177e2005-04-16 15:20:36 -070055#define DRIVER_DESC "USB Abstract Control Model driver for USB modems and ISDN adapters"
56
57static struct usb_driver acm_driver;
58static struct tty_driver *acm_tty_driver;
59static struct acm *acm_table[ACM_TTY_MINORS];
60
Havard Skinnemoen7fb57a02011-11-30 13:28:14 -080061static DEFINE_MUTEX(acm_table_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -070062
Havard Skinnemoen7fb57a02011-11-30 13:28:14 -080063/*
64 * acm_table accessors
65 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070066
Havard Skinnemoen7fb57a02011-11-30 13:28:14 -080067/*
68 * Look up an ACM structure by index. If found and not disconnected, increment
69 * its refcount and return it with its mutex held.
70 */
71static struct acm *acm_get_by_index(unsigned index)
72{
73 struct acm *acm;
74
75 mutex_lock(&acm_table_lock);
76 acm = acm_table[index];
77 if (acm) {
78 mutex_lock(&acm->mutex);
79 if (acm->disconnected) {
80 mutex_unlock(&acm->mutex);
81 acm = NULL;
82 } else {
83 tty_port_get(&acm->port);
84 mutex_unlock(&acm->mutex);
85 }
86 }
87 mutex_unlock(&acm_table_lock);
88 return acm;
89}
90
91/*
92 * Try to find an available minor number and if found, associate it with 'acm'.
93 */
94static int acm_alloc_minor(struct acm *acm)
95{
96 int minor;
97
98 mutex_lock(&acm_table_lock);
99 for (minor = 0; minor < ACM_TTY_MINORS; minor++) {
100 if (!acm_table[minor]) {
101 acm_table[minor] = acm;
102 break;
103 }
104 }
105 mutex_unlock(&acm_table_lock);
106
107 return minor;
108}
109
110/* Release the minor number associated with 'acm'. */
111static void acm_release_minor(struct acm *acm)
112{
113 mutex_lock(&acm_table_lock);
114 acm_table[acm->minor] = NULL;
115 mutex_unlock(&acm_table_lock);
116}
Alan Cox739e0282009-06-11 12:27:50 +0100117
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118/*
119 * Functions for ACM control messages.
120 */
121
Alan Cox6e47e062009-06-11 12:37:06 +0100122static int acm_ctrl_msg(struct acm *acm, int request, int value,
123 void *buf, int len)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700124{
Johan Hovoldbae3f4c2014-05-26 19:23:39 +0200125 int retval;
126
127 retval = usb_autopm_get_interface(acm->control);
128 if (retval)
129 return retval;
130
131 retval = usb_control_msg(acm->dev, usb_sndctrlpipe(acm->dev, 0),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700132 request, USB_RT_ACM, value,
133 acm->control->altsetting[0].desc.bInterfaceNumber,
134 buf, len, 5000);
Johan Hovoldbae3f4c2014-05-26 19:23:39 +0200135
Johan Hovolda5cc7ef2011-03-22 11:12:15 +0100136 dev_dbg(&acm->control->dev,
137 "%s - rq 0x%02x, val %#x, len %#x, result %d\n",
138 __func__, request, value, len, retval);
Johan Hovoldbae3f4c2014-05-26 19:23:39 +0200139
140 usb_autopm_put_interface(acm->control);
141
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142 return retval < 0 ? retval : 0;
143}
144
145/* devices aren't required to support these requests.
146 * the cdc acm descriptor tells whether they do...
147 */
148#define acm_set_control(acm, control) \
149 acm_ctrl_msg(acm, USB_CDC_REQ_SET_CONTROL_LINE_STATE, control, NULL, 0)
150#define acm_set_line(acm, line) \
151 acm_ctrl_msg(acm, USB_CDC_REQ_SET_LINE_CODING, 0, line, sizeof *(line))
152#define acm_send_break(acm, ms) \
153 acm_ctrl_msg(acm, USB_CDC_REQ_SEND_BREAK, ms, NULL, 0)
154
155/*
Oliver Neukum884b6002005-04-21 21:28:02 +0200156 * Write buffer management.
157 * All of these assume proper locks taken by the caller.
158 */
159
160static int acm_wb_alloc(struct acm *acm)
161{
162 int i, wbn;
163 struct acm_wb *wb;
164
David Engrafe4cf3aa2008-03-20 10:01:34 +0100165 wbn = 0;
Oliver Neukum884b6002005-04-21 21:28:02 +0200166 i = 0;
167 for (;;) {
168 wb = &acm->wb[wbn];
169 if (!wb->use) {
170 wb->use = 1;
171 return wbn;
172 }
Oliver Neukum86478942006-05-13 22:50:47 +0200173 wbn = (wbn + 1) % ACM_NW;
174 if (++i >= ACM_NW)
Oliver Neukum884b6002005-04-21 21:28:02 +0200175 return -1;
176 }
177}
178
Oliver Neukum884b6002005-04-21 21:28:02 +0200179static int acm_wb_is_avail(struct acm *acm)
180{
181 int i, n;
David Brownelle5fbab52008-08-06 18:46:10 -0700182 unsigned long flags;
Oliver Neukum884b6002005-04-21 21:28:02 +0200183
Oliver Neukum86478942006-05-13 22:50:47 +0200184 n = ACM_NW;
David Brownelle5fbab52008-08-06 18:46:10 -0700185 spin_lock_irqsave(&acm->write_lock, flags);
Alan Cox6e47e062009-06-11 12:37:06 +0100186 for (i = 0; i < ACM_NW; i++)
Oliver Neukum86478942006-05-13 22:50:47 +0200187 n -= acm->wb[i].use;
David Brownelle5fbab52008-08-06 18:46:10 -0700188 spin_unlock_irqrestore(&acm->write_lock, flags);
Oliver Neukum884b6002005-04-21 21:28:02 +0200189 return n;
190}
191
Oliver Neukum884b6002005-04-21 21:28:02 +0200192/*
Brandon Philipsad0b65e2008-11-06 11:19:11 -0800193 * Finish write. Caller must hold acm->write_lock
Oliver Neukum884b6002005-04-21 21:28:02 +0200194 */
David Engrafe4cf3aa2008-03-20 10:01:34 +0100195static void acm_write_done(struct acm *acm, struct acm_wb *wb)
Oliver Neukum884b6002005-04-21 21:28:02 +0200196{
David Engrafe4cf3aa2008-03-20 10:01:34 +0100197 wb->use = 0;
Oliver Neukum11ea8592008-06-20 11:25:57 +0200198 acm->transmitting--;
Oliver Neukum97d35f92009-12-16 17:05:57 +0100199 usb_autopm_put_interface_async(acm->control);
Oliver Neukum884b6002005-04-21 21:28:02 +0200200}
201
202/*
203 * Poke write.
Oliver Neukum11ea8592008-06-20 11:25:57 +0200204 *
205 * the caller is responsible for locking
Oliver Neukum884b6002005-04-21 21:28:02 +0200206 */
Oliver Neukum11ea8592008-06-20 11:25:57 +0200207
208static int acm_start_wb(struct acm *acm, struct acm_wb *wb)
209{
210 int rc;
211
212 acm->transmitting++;
213
214 wb->urb->transfer_buffer = wb->buf;
215 wb->urb->transfer_dma = wb->dmah;
216 wb->urb->transfer_buffer_length = wb->len;
217 wb->urb->dev = acm->dev;
218
Alan Cox6e47e062009-06-11 12:37:06 +0100219 rc = usb_submit_urb(wb->urb, GFP_ATOMIC);
220 if (rc < 0) {
Johan Hovolda5cc7ef2011-03-22 11:12:15 +0100221 dev_err(&acm->data->dev,
222 "%s - usb_submit_urb(write bulk) failed: %d\n",
223 __func__, rc);
Oliver Neukum11ea8592008-06-20 11:25:57 +0200224 acm_write_done(acm, wb);
225 }
226 return rc;
227}
228
Oliver Neukumc4cabd22007-02-27 15:28:55 +0100229/*
230 * attributes exported through sysfs
231 */
232static ssize_t show_caps
233(struct device *dev, struct device_attribute *attr, char *buf)
234{
235 struct usb_interface *intf = to_usb_interface(dev);
236 struct acm *acm = usb_get_intfdata(intf);
Oliver Neukum884b6002005-04-21 21:28:02 +0200237
Oliver Neukumc4cabd22007-02-27 15:28:55 +0100238 return sprintf(buf, "%d", acm->ctrl_caps);
239}
240static DEVICE_ATTR(bmCapabilities, S_IRUGO, show_caps, NULL);
241
242static ssize_t show_country_codes
243(struct device *dev, struct device_attribute *attr, char *buf)
244{
245 struct usb_interface *intf = to_usb_interface(dev);
246 struct acm *acm = usb_get_intfdata(intf);
247
248 memcpy(buf, acm->country_codes, acm->country_code_size);
249 return acm->country_code_size;
250}
251
252static DEVICE_ATTR(wCountryCodes, S_IRUGO, show_country_codes, NULL);
253
254static ssize_t show_country_rel_date
255(struct device *dev, struct device_attribute *attr, char *buf)
256{
257 struct usb_interface *intf = to_usb_interface(dev);
258 struct acm *acm = usb_get_intfdata(intf);
259
260 return sprintf(buf, "%d", acm->country_rel_date);
261}
262
263static DEVICE_ATTR(iCountryCodeRelDate, S_IRUGO, show_country_rel_date, NULL);
Oliver Neukum884b6002005-04-21 21:28:02 +0200264/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700265 * Interrupt handlers for various ACM device responses
266 */
267
268/* control interface reports status changes with "interrupt" transfers */
David Howells7d12e782006-10-05 14:55:46 +0100269static void acm_ctrl_irq(struct urb *urb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700270{
271 struct acm *acm = urb->context;
272 struct usb_cdc_notification *dr = urb->transfer_buffer;
273 unsigned char *data;
274 int newctrl;
Oliver Neukum5a6a62b2013-11-20 11:35:34 +0100275 int difference;
Greg Kroah-Hartman185d4052007-07-18 10:58:02 -0700276 int retval;
277 int status = urb->status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700278
Greg Kroah-Hartman185d4052007-07-18 10:58:02 -0700279 switch (status) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280 case 0:
281 /* success */
282 break;
283 case -ECONNRESET:
284 case -ENOENT:
285 case -ESHUTDOWN:
286 /* this urb is terminated, clean up */
Johan Hovolda5cc7ef2011-03-22 11:12:15 +0100287 dev_dbg(&acm->control->dev,
288 "%s - urb shutting down with status: %d\n",
289 __func__, status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290 return;
291 default:
Johan Hovolda5cc7ef2011-03-22 11:12:15 +0100292 dev_dbg(&acm->control->dev,
293 "%s - nonzero urb status received: %d\n",
294 __func__, status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700295 goto exit;
296 }
297
Johan Hovold7e7797e2011-03-22 11:12:11 +0100298 usb_mark_last_busy(acm->dev);
299
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300 data = (unsigned char *)(dr + 1);
301 switch (dr->bNotificationType) {
Alan Cox6e47e062009-06-11 12:37:06 +0100302 case USB_CDC_NOTIFY_NETWORK_CONNECTION:
Johan Hovolda5cc7ef2011-03-22 11:12:15 +0100303 dev_dbg(&acm->control->dev, "%s - network connection: %d\n",
304 __func__, dr->wValue);
Alan Cox6e47e062009-06-11 12:37:06 +0100305 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700306
Alan Cox6e47e062009-06-11 12:37:06 +0100307 case USB_CDC_NOTIFY_SERIAL_STATE:
Alan Cox6e47e062009-06-11 12:37:06 +0100308 newctrl = get_unaligned_le16(data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700309
Jiri Slabyaa27a092013-03-07 13:12:30 +0100310 if (!acm->clocal && (acm->ctrlin & ~newctrl & ACM_CTRL_DCD)) {
311 dev_dbg(&acm->control->dev, "%s - calling hangup\n",
312 __func__);
313 tty_port_tty_hangup(&acm->port, false);
Alan Cox6e47e062009-06-11 12:37:06 +0100314 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700315
Oliver Neukum5a6a62b2013-11-20 11:35:34 +0100316 difference = acm->ctrlin ^ newctrl;
317 spin_lock(&acm->read_lock);
Alan Cox6e47e062009-06-11 12:37:06 +0100318 acm->ctrlin = newctrl;
Oliver Neukum5a6a62b2013-11-20 11:35:34 +0100319 acm->oldcount = acm->iocount;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700320
Oliver Neukum5a6a62b2013-11-20 11:35:34 +0100321 if (difference & ACM_CTRL_DSR)
322 acm->iocount.dsr++;
323 if (difference & ACM_CTRL_BRK)
324 acm->iocount.brk++;
325 if (difference & ACM_CTRL_RI)
326 acm->iocount.rng++;
327 if (difference & ACM_CTRL_DCD)
328 acm->iocount.dcd++;
329 if (difference & ACM_CTRL_FRAMING)
330 acm->iocount.frame++;
331 if (difference & ACM_CTRL_PARITY)
332 acm->iocount.parity++;
333 if (difference & ACM_CTRL_OVERRUN)
334 acm->iocount.overrun++;
335 spin_unlock(&acm->read_lock);
336
337 if (difference)
338 wake_up_all(&acm->wioctl);
339
340 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700341
Alan Cox6e47e062009-06-11 12:37:06 +0100342 default:
Johan Hovolda5cc7ef2011-03-22 11:12:15 +0100343 dev_dbg(&acm->control->dev,
344 "%s - unknown notification %d received: index %d "
345 "len %d data0 %d data1 %d\n",
346 __func__,
Alan Cox6e47e062009-06-11 12:37:06 +0100347 dr->bNotificationType, dr->wIndex,
348 dr->wLength, data[0], data[1]);
349 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700350 }
351exit:
Alan Cox6e47e062009-06-11 12:37:06 +0100352 retval = usb_submit_urb(urb, GFP_ATOMIC);
Greg Kroah-Hartman185d4052007-07-18 10:58:02 -0700353 if (retval)
Johan Hovold1d9846e2011-03-22 11:12:14 +0100354 dev_err(&acm->control->dev, "%s - usb_submit_urb failed: %d\n",
355 __func__, retval);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700356}
357
Johan Hovold088c64f2011-03-25 11:06:02 +0100358static int acm_submit_read_urb(struct acm *acm, int index, gfp_t mem_flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359{
Johan Hovold088c64f2011-03-25 11:06:02 +0100360 int res;
Greg Kroah-Hartman185d4052007-07-18 10:58:02 -0700361
Johan Hovold088c64f2011-03-25 11:06:02 +0100362 if (!test_and_clear_bit(index, &acm->read_urbs_free))
363 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700364
Johan Hovold088c64f2011-03-25 11:06:02 +0100365 dev_vdbg(&acm->data->dev, "%s - urb %d\n", __func__, index);
366
367 res = usb_submit_urb(acm->read_urbs[index], mem_flags);
368 if (res) {
369 if (res != -EPERM) {
370 dev_err(&acm->data->dev,
371 "%s - usb_submit_urb failed: %d\n",
372 __func__, res);
373 }
374 set_bit(index, &acm->read_urbs_free);
375 return res;
376 }
377
378 return 0;
379}
380
381static int acm_submit_read_urbs(struct acm *acm, gfp_t mem_flags)
382{
383 int res;
384 int i;
385
386 for (i = 0; i < acm->rx_buflimit; ++i) {
387 res = acm_submit_read_urb(acm, i, mem_flags);
388 if (res)
389 return res;
390 }
391
392 return 0;
393}
394
395static void acm_process_read_urb(struct acm *acm, struct urb *urb)
396{
Johan Hovold088c64f2011-03-25 11:06:02 +0100397 if (!urb->actual_length)
398 return;
399
Jiri Slaby05c7cd32013-01-03 15:53:04 +0100400 tty_insert_flip_string(&acm->port, urb->transfer_buffer,
401 urb->actual_length);
Jiri Slaby2e124b42013-01-03 15:53:06 +0100402 tty_flip_buffer_push(&acm->port);
Johan Hovold088c64f2011-03-25 11:06:02 +0100403}
404
405static void acm_read_bulk_callback(struct urb *urb)
406{
407 struct acm_rb *rb = urb->context;
408 struct acm *acm = rb->instance;
409 unsigned long flags;
410
411 dev_vdbg(&acm->data->dev, "%s - urb %d, len %d\n", __func__,
412 rb->index, urb->actual_length);
413 set_bit(rb->index, &acm->read_urbs_free);
414
415 if (!acm->dev) {
416 dev_dbg(&acm->data->dev, "%s - disconnected\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700417 return;
Oliver Neukum11ea8592008-06-20 11:25:57 +0200418 }
419 usb_mark_last_busy(acm->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700420
Johan Hovold088c64f2011-03-25 11:06:02 +0100421 if (urb->status) {
Johan Hovold1d9846e2011-03-22 11:12:14 +0100422 dev_dbg(&acm->data->dev, "%s - non-zero urb status: %d\n",
Johan Hovold088c64f2011-03-25 11:06:02 +0100423 __func__, urb->status);
424 return;
425 }
426 acm_process_read_urb(acm, urb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700427
Johan Hovold088c64f2011-03-25 11:06:02 +0100428 /* throttle device if requested by tty */
429 spin_lock_irqsave(&acm->read_lock, flags);
430 acm->throttled = acm->throttle_req;
431 if (!acm->throttled && !acm->susp_count) {
432 spin_unlock_irqrestore(&acm->read_lock, flags);
433 acm_submit_read_urb(acm, rb->index, GFP_ATOMIC);
Oliver Neukum86478942006-05-13 22:50:47 +0200434 } else {
Jarek Poplawski762f0072006-10-06 07:23:11 +0200435 spin_unlock_irqrestore(&acm->read_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700436 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437}
438
439/* data interface wrote those outgoing bytes */
David Howells7d12e782006-10-05 14:55:46 +0100440static void acm_write_bulk(struct urb *urb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700441{
Ming Leicdc97792008-02-24 18:41:47 +0800442 struct acm_wb *wb = urb->context;
David Brownelle5fbab52008-08-06 18:46:10 -0700443 struct acm *acm = wb->instance;
Brandon Philipsad0b65e2008-11-06 11:19:11 -0800444 unsigned long flags;
Oliver Neukum884b6002005-04-21 21:28:02 +0200445
Johan Hovold4fa46262011-03-22 11:12:16 +0100446 if (urb->status || (urb->actual_length != urb->transfer_buffer_length))
447 dev_vdbg(&acm->data->dev, "%s - len %d/%d, status %d\n",
Johan Hovold1d9846e2011-03-22 11:12:14 +0100448 __func__,
David Brownelle5fbab52008-08-06 18:46:10 -0700449 urb->actual_length,
450 urb->transfer_buffer_length,
451 urb->status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700452
Brandon Philipsad0b65e2008-11-06 11:19:11 -0800453 spin_lock_irqsave(&acm->write_lock, flags);
David Engrafe4cf3aa2008-03-20 10:01:34 +0100454 acm_write_done(acm, wb);
Brandon Philipsad0b65e2008-11-06 11:19:11 -0800455 spin_unlock_irqrestore(&acm->write_lock, flags);
Havard Skinnemoen99823f42011-12-09 16:51:54 -0800456 schedule_work(&acm->work);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700457}
458
David Howellsc4028952006-11-22 14:57:56 +0000459static void acm_softint(struct work_struct *work)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700460{
David Howellsc4028952006-11-22 14:57:56 +0000461 struct acm *acm = container_of(work, struct acm, work);
David Brownelle5fbab52008-08-06 18:46:10 -0700462
Johan Hovold1d9846e2011-03-22 11:12:14 +0100463 dev_vdbg(&acm->data->dev, "%s\n", __func__);
464
Jiri Slaby6aad04f2013-03-07 13:12:29 +0100465 tty_port_tty_wakeup(&acm->port);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700466}
467
468/*
469 * TTY handlers
470 */
471
Havard Skinnemoen7fb57a02011-11-30 13:28:14 -0800472static int acm_tty_install(struct tty_driver *driver, struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700473{
474 struct acm *acm;
Havard Skinnemoen7fb57a02011-11-30 13:28:14 -0800475 int retval;
Arjan van de Ven4186ecf2006-01-11 15:55:29 +0100476
Havard Skinnemoen7fb57a02011-11-30 13:28:14 -0800477 dev_dbg(tty->dev, "%s\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700478
Havard Skinnemoen7fb57a02011-11-30 13:28:14 -0800479 acm = acm_get_by_index(tty->index);
480 if (!acm)
481 return -ENODEV;
482
Jiri Slabyf8a8c102012-03-05 14:51:48 +0100483 retval = tty_standard_install(driver, tty);
Havard Skinnemoen7fb57a02011-11-30 13:28:14 -0800484 if (retval)
485 goto error_init_termios;
486
487 tty->driver_data = acm;
488
Havard Skinnemoen7fb57a02011-11-30 13:28:14 -0800489 return 0;
490
491error_init_termios:
492 tty_port_put(&acm->port);
493 return retval;
494}
495
496static int acm_tty_open(struct tty_struct *tty, struct file *filp)
497{
498 struct acm *acm = tty->driver_data;
499
500 dev_dbg(tty->dev, "%s\n", __func__);
501
502 return tty_port_open(&acm->port, tty, filp);
503}
504
505static int acm_port_activate(struct tty_port *port, struct tty_struct *tty)
506{
507 struct acm *acm = container_of(port, struct acm, port);
508 int retval = -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700509
Johan Hovolda5cc7ef2011-03-22 11:12:15 +0100510 dev_dbg(&acm->control->dev, "%s\n", __func__);
511
Oliver Neukum1365baf2007-10-12 17:24:28 +0200512 mutex_lock(&acm->mutex);
Havard Skinnemoen7fb57a02011-11-30 13:28:14 -0800513 if (acm->disconnected)
514 goto disconnected;
515
516 retval = usb_autopm_get_interface(acm->control);
517 if (retval)
518 goto error_get_interface;
519
520 /*
521 * FIXME: Why do we need this? Allocating 64K of physically contiguous
522 * memory is really nasty...
523 */
524 set_bit(TTY_NO_WRITE_SPLIT, &tty->flags);
525 acm->control->needs_remote_wakeup = 1;
Oliver Neukum1365baf2007-10-12 17:24:28 +0200526
Linus Torvalds1da177e2005-04-16 15:20:36 -0700527 acm->ctrlurb->dev = acm->dev;
528 if (usb_submit_urb(acm->ctrlurb, GFP_KERNEL)) {
Johan Hovolda5cc7ef2011-03-22 11:12:15 +0100529 dev_err(&acm->control->dev,
530 "%s - usb_submit_urb(ctrl irq) failed\n", __func__);
Alexey Khoroshilov070c0b12014-04-12 02:10:45 +0400531 usb_autopm_put_interface(acm->control);
Havard Skinnemoen7fb57a02011-11-30 13:28:14 -0800532 goto error_submit_urb;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700533 }
534
Havard Skinnemoen7fb57a02011-11-30 13:28:14 -0800535 acm->ctrlout = ACM_CTRL_DTR | ACM_CTRL_RTS;
536 if (acm_set_control(acm, acm->ctrlout) < 0 &&
Alexey Khoroshilov070c0b12014-04-12 02:10:45 +0400537 (acm->ctrl_caps & USB_CDC_CAP_LINE)) {
538 usb_autopm_put_interface(acm->control);
Havard Skinnemoen7fb57a02011-11-30 13:28:14 -0800539 goto error_set_control;
Alexey Khoroshilov070c0b12014-04-12 02:10:45 +0400540 }
Alan Cox10077d42009-06-11 12:36:09 +0100541
Oliver Neukum11ea8592008-06-20 11:25:57 +0200542 usb_autopm_put_interface(acm->control);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700543
Otto Meta6c4707f2012-06-06 18:46:21 +0200544 /*
545 * Unthrottle device in case the TTY was closed while throttled.
546 */
547 spin_lock_irq(&acm->read_lock);
548 acm->throttled = 0;
549 acm->throttle_req = 0;
550 spin_unlock_irq(&acm->read_lock);
551
Johan Hovold088c64f2011-03-25 11:06:02 +0100552 if (acm_submit_read_urbs(acm, GFP_KERNEL))
Havard Skinnemoen7fb57a02011-11-30 13:28:14 -0800553 goto error_submit_read_urbs;
Oliver Neukum2b626dc2010-02-03 17:10:22 +0100554
Oliver Neukum1365baf2007-10-12 17:24:28 +0200555 mutex_unlock(&acm->mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700556
Havard Skinnemoen7fb57a02011-11-30 13:28:14 -0800557 return 0;
558
559error_submit_read_urbs:
560 acm->ctrlout = 0;
561 acm_set_control(acm, acm->ctrlout);
562error_set_control:
563 usb_kill_urb(acm->ctrlurb);
564error_submit_urb:
Havard Skinnemoen7fb57a02011-11-30 13:28:14 -0800565error_get_interface:
566disconnected:
567 mutex_unlock(&acm->mutex);
568 return retval;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700569}
570
Havard Skinnemoen7fb57a02011-11-30 13:28:14 -0800571static void acm_port_destruct(struct tty_port *port)
brian@murphy.dk83ef3442005-06-29 16:53:29 -0700572{
Havard Skinnemoen7fb57a02011-11-30 13:28:14 -0800573 struct acm *acm = container_of(port, struct acm, port);
574
575 dev_dbg(&acm->control->dev, "%s\n", __func__);
David Kubicek61a87ad2005-11-01 18:51:34 +0100576
Havard Skinnemoen7fb57a02011-11-30 13:28:14 -0800577 acm_release_minor(acm);
brian@murphy.dk83ef3442005-06-29 16:53:29 -0700578 usb_put_intf(acm->control);
Oliver Neukumc4cabd22007-02-27 15:28:55 +0100579 kfree(acm->country_codes);
brian@murphy.dk83ef3442005-06-29 16:53:29 -0700580 kfree(acm);
581}
582
Havard Skinnemoen7fb57a02011-11-30 13:28:14 -0800583static void acm_port_shutdown(struct tty_port *port)
Alan Cox10077d42009-06-11 12:36:09 +0100584{
Havard Skinnemoen7fb57a02011-11-30 13:28:14 -0800585 struct acm *acm = container_of(port, struct acm, port);
Johan Hovold140cb812014-05-26 19:23:38 +0200586 struct urb *urb;
587 struct acm_wb *wb;
Johan Hovolddab54c92011-03-22 11:12:21 +0100588 int i;
589
Havard Skinnemoen7fb57a02011-11-30 13:28:14 -0800590 dev_dbg(&acm->control->dev, "%s\n", __func__);
591
592 mutex_lock(&acm->mutex);
593 if (!acm->disconnected) {
Alan Cox10077d42009-06-11 12:36:09 +0100594 usb_autopm_get_interface(acm->control);
595 acm_set_control(acm, acm->ctrlout = 0);
Johan Hovold140cb812014-05-26 19:23:38 +0200596
597 for (;;) {
598 urb = usb_get_from_anchor(&acm->delayed);
599 if (!urb)
600 break;
601 wb = urb->context;
602 wb->use = 0;
603 usb_autopm_put_interface_async(acm->control);
604 }
605
Alan Cox10077d42009-06-11 12:36:09 +0100606 usb_kill_urb(acm->ctrlurb);
607 for (i = 0; i < ACM_NW; i++)
608 usb_kill_urb(acm->wb[i].urb);
Johan Hovolddab54c92011-03-22 11:12:21 +0100609 for (i = 0; i < acm->rx_buflimit; i++)
Johan Hovold088c64f2011-03-25 11:06:02 +0100610 usb_kill_urb(acm->read_urbs[i]);
Alan Cox10077d42009-06-11 12:36:09 +0100611 acm->control->needs_remote_wakeup = 0;
612 usb_autopm_put_interface(acm->control);
613 }
Havard Skinnemoen7fb57a02011-11-30 13:28:14 -0800614 mutex_unlock(&acm->mutex);
615}
616
617static void acm_tty_cleanup(struct tty_struct *tty)
618{
619 struct acm *acm = tty->driver_data;
620 dev_dbg(&acm->control->dev, "%s\n", __func__);
621 tty_port_put(&acm->port);
Alan Cox10077d42009-06-11 12:36:09 +0100622}
623
624static void acm_tty_hangup(struct tty_struct *tty)
625{
626 struct acm *acm = tty->driver_data;
Havard Skinnemoen7fb57a02011-11-30 13:28:14 -0800627 dev_dbg(&acm->control->dev, "%s\n", __func__);
Alan Cox10077d42009-06-11 12:36:09 +0100628 tty_port_hangup(&acm->port);
Alan Cox10077d42009-06-11 12:36:09 +0100629}
630
Linus Torvalds1da177e2005-04-16 15:20:36 -0700631static void acm_tty_close(struct tty_struct *tty, struct file *filp)
632{
633 struct acm *acm = tty->driver_data;
Havard Skinnemoen7fb57a02011-11-30 13:28:14 -0800634 dev_dbg(&acm->control->dev, "%s\n", __func__);
635 tty_port_close(&acm->port, tty, filp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700636}
637
Alan Cox6e47e062009-06-11 12:37:06 +0100638static int acm_tty_write(struct tty_struct *tty,
639 const unsigned char *buf, int count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700640{
641 struct acm *acm = tty->driver_data;
642 int stat;
Oliver Neukum884b6002005-04-21 21:28:02 +0200643 unsigned long flags;
644 int wbn;
645 struct acm_wb *wb;
646
Linus Torvalds1da177e2005-04-16 15:20:36 -0700647 if (!count)
648 return 0;
649
Johan Hovold5e9e75f2011-03-22 11:12:17 +0100650 dev_vdbg(&acm->data->dev, "%s - count %d\n", __func__, count);
Johan Hovolda5cc7ef2011-03-22 11:12:15 +0100651
Oliver Neukum884b6002005-04-21 21:28:02 +0200652 spin_lock_irqsave(&acm->write_lock, flags);
Alan Cox6e47e062009-06-11 12:37:06 +0100653 wbn = acm_wb_alloc(acm);
654 if (wbn < 0) {
Oliver Neukum884b6002005-04-21 21:28:02 +0200655 spin_unlock_irqrestore(&acm->write_lock, flags);
Oliver Neukum884b6002005-04-21 21:28:02 +0200656 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700657 }
Oliver Neukum884b6002005-04-21 21:28:02 +0200658 wb = &acm->wb[wbn];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700659
Greg Kroah-Hartman71c2fb02013-06-07 11:42:08 -0700660 if (!acm->dev) {
661 wb->use = 0;
662 spin_unlock_irqrestore(&acm->write_lock, flags);
663 return -ENODEV;
664 }
665
Oliver Neukum884b6002005-04-21 21:28:02 +0200666 count = (count > acm->writesize) ? acm->writesize : count;
Johan Hovold5e9e75f2011-03-22 11:12:17 +0100667 dev_vdbg(&acm->data->dev, "%s - write %d\n", __func__, count);
Oliver Neukum884b6002005-04-21 21:28:02 +0200668 memcpy(wb->buf, buf, count);
669 wb->len = count;
Greg Kroah-Hartman71c2fb02013-06-07 11:42:08 -0700670
Johan Hovold183a4502014-05-26 19:23:41 +0200671 stat = usb_autopm_get_interface_async(acm->control);
672 if (stat) {
673 wb->use = 0;
674 spin_unlock_irqrestore(&acm->write_lock, flags);
675 return stat;
676 }
677
Greg Kroah-Hartman71c2fb02013-06-07 11:42:08 -0700678 if (acm->susp_count) {
Johan Hovold140cb812014-05-26 19:23:38 +0200679 usb_anchor_urb(wb->urb, &acm->delayed);
Greg Kroah-Hartman71c2fb02013-06-07 11:42:08 -0700680 spin_unlock_irqrestore(&acm->write_lock, flags);
Johan Hovold140cb812014-05-26 19:23:38 +0200681 return count;
Greg Kroah-Hartman71c2fb02013-06-07 11:42:08 -0700682 }
683 usb_mark_last_busy(acm->dev);
684
685 stat = acm_start_wb(acm, wb);
Oliver Neukum884b6002005-04-21 21:28:02 +0200686 spin_unlock_irqrestore(&acm->write_lock, flags);
687
Alan Cox6e47e062009-06-11 12:37:06 +0100688 if (stat < 0)
Oliver Neukum884b6002005-04-21 21:28:02 +0200689 return stat;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700690 return count;
691}
692
693static int acm_tty_write_room(struct tty_struct *tty)
694{
695 struct acm *acm = tty->driver_data;
Oliver Neukum884b6002005-04-21 21:28:02 +0200696 /*
697 * Do not let the line discipline to know that we have a reserve,
698 * or it might get too enthusiastic.
699 */
David Brownell934da462008-08-06 18:44:12 -0700700 return acm_wb_is_avail(acm) ? acm->writesize : 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700701}
702
703static int acm_tty_chars_in_buffer(struct tty_struct *tty)
704{
705 struct acm *acm = tty->driver_data;
Havard Skinnemoen7fb57a02011-11-30 13:28:14 -0800706 /*
707 * if the device was unplugged then any remaining characters fell out
708 * of the connector ;)
709 */
710 if (acm->disconnected)
Alan Cox23198fd2009-07-20 16:05:27 +0100711 return 0;
Oliver Neukum884b6002005-04-21 21:28:02 +0200712 /*
713 * This is inaccurate (overcounts), but it works.
714 */
Oliver Neukum86478942006-05-13 22:50:47 +0200715 return (ACM_NW - acm_wb_is_avail(acm)) * acm->writesize;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700716}
717
718static void acm_tty_throttle(struct tty_struct *tty)
719{
720 struct acm *acm = tty->driver_data;
Johan Hovold088c64f2011-03-25 11:06:02 +0100721
Johan Hovold088c64f2011-03-25 11:06:02 +0100722 spin_lock_irq(&acm->read_lock);
723 acm->throttle_req = 1;
724 spin_unlock_irq(&acm->read_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700725}
726
727static void acm_tty_unthrottle(struct tty_struct *tty)
728{
729 struct acm *acm = tty->driver_data;
Johan Hovold088c64f2011-03-25 11:06:02 +0100730 unsigned int was_throttled;
731
Johan Hovold088c64f2011-03-25 11:06:02 +0100732 spin_lock_irq(&acm->read_lock);
733 was_throttled = acm->throttled;
734 acm->throttled = 0;
735 acm->throttle_req = 0;
736 spin_unlock_irq(&acm->read_lock);
737
738 if (was_throttled)
739 acm_submit_read_urbs(acm, GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700740}
741
Alan Cox9e989662008-07-22 11:18:03 +0100742static int acm_tty_break_ctl(struct tty_struct *tty, int state)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700743{
744 struct acm *acm = tty->driver_data;
Alan Cox9e989662008-07-22 11:18:03 +0100745 int retval;
Havard Skinnemoen7fb57a02011-11-30 13:28:14 -0800746
Alan Cox9e989662008-07-22 11:18:03 +0100747 retval = acm_send_break(acm, state ? 0xffff : 0);
748 if (retval < 0)
Johan Hovolda5cc7ef2011-03-22 11:12:15 +0100749 dev_dbg(&acm->control->dev, "%s - send break failed\n",
750 __func__);
Alan Cox9e989662008-07-22 11:18:03 +0100751 return retval;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700752}
753
Alan Cox60b33c12011-02-14 16:26:14 +0000754static int acm_tty_tiocmget(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700755{
756 struct acm *acm = tty->driver_data;
757
Linus Torvalds1da177e2005-04-16 15:20:36 -0700758 return (acm->ctrlout & ACM_CTRL_DTR ? TIOCM_DTR : 0) |
759 (acm->ctrlout & ACM_CTRL_RTS ? TIOCM_RTS : 0) |
760 (acm->ctrlin & ACM_CTRL_DSR ? TIOCM_DSR : 0) |
761 (acm->ctrlin & ACM_CTRL_RI ? TIOCM_RI : 0) |
762 (acm->ctrlin & ACM_CTRL_DCD ? TIOCM_CD : 0) |
763 TIOCM_CTS;
764}
765
Alan Cox20b9d172011-02-14 16:26:50 +0000766static int acm_tty_tiocmset(struct tty_struct *tty,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700767 unsigned int set, unsigned int clear)
768{
769 struct acm *acm = tty->driver_data;
770 unsigned int newctrl;
771
Linus Torvalds1da177e2005-04-16 15:20:36 -0700772 newctrl = acm->ctrlout;
Alan Cox6e47e062009-06-11 12:37:06 +0100773 set = (set & TIOCM_DTR ? ACM_CTRL_DTR : 0) |
774 (set & TIOCM_RTS ? ACM_CTRL_RTS : 0);
775 clear = (clear & TIOCM_DTR ? ACM_CTRL_DTR : 0) |
776 (clear & TIOCM_RTS ? ACM_CTRL_RTS : 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700777
778 newctrl = (newctrl & ~clear) | set;
779
780 if (acm->ctrlout == newctrl)
781 return 0;
782 return acm_set_control(acm, acm->ctrlout = newctrl);
783}
784
Oliver Neukum18c75722012-02-17 17:21:24 -0500785static int get_serial_info(struct acm *acm, struct serial_struct __user *info)
786{
787 struct serial_struct tmp;
788
789 if (!info)
790 return -EINVAL;
791
792 memset(&tmp, 0, sizeof(tmp));
793 tmp.flags = ASYNC_LOW_LATENCY;
794 tmp.xmit_fifo_size = acm->writesize;
795 tmp.baud_base = le32_to_cpu(acm->line.dwDTERate);
Dan Williamsba2d8ce2012-11-08 12:47:41 -0600796 tmp.close_delay = acm->port.close_delay / 10;
797 tmp.closing_wait = acm->port.closing_wait == ASYNC_CLOSING_WAIT_NONE ?
798 ASYNC_CLOSING_WAIT_NONE :
799 acm->port.closing_wait / 10;
Oliver Neukum18c75722012-02-17 17:21:24 -0500800
801 if (copy_to_user(info, &tmp, sizeof(tmp)))
802 return -EFAULT;
803 else
804 return 0;
805}
806
Dan Williamsba2d8ce2012-11-08 12:47:41 -0600807static int set_serial_info(struct acm *acm,
808 struct serial_struct __user *newinfo)
809{
810 struct serial_struct new_serial;
811 unsigned int closing_wait, close_delay;
812 int retval = 0;
813
814 if (copy_from_user(&new_serial, newinfo, sizeof(new_serial)))
815 return -EFAULT;
816
817 close_delay = new_serial.close_delay * 10;
818 closing_wait = new_serial.closing_wait == ASYNC_CLOSING_WAIT_NONE ?
819 ASYNC_CLOSING_WAIT_NONE : new_serial.closing_wait * 10;
820
821 mutex_lock(&acm->port.mutex);
822
823 if (!capable(CAP_SYS_ADMIN)) {
824 if ((close_delay != acm->port.close_delay) ||
825 (closing_wait != acm->port.closing_wait))
826 retval = -EPERM;
827 else
828 retval = -EOPNOTSUPP;
829 } else {
830 acm->port.close_delay = close_delay;
831 acm->port.closing_wait = closing_wait;
832 }
833
834 mutex_unlock(&acm->port.mutex);
835 return retval;
836}
837
Oliver Neukum5a6a62b2013-11-20 11:35:34 +0100838static int wait_serial_change(struct acm *acm, unsigned long arg)
839{
840 int rv = 0;
841 DECLARE_WAITQUEUE(wait, current);
842 struct async_icount old, new;
843
844 if (arg & (TIOCM_DSR | TIOCM_RI | TIOCM_CD ))
845 return -EINVAL;
846 do {
847 spin_lock_irq(&acm->read_lock);
848 old = acm->oldcount;
849 new = acm->iocount;
850 acm->oldcount = new;
851 spin_unlock_irq(&acm->read_lock);
852
853 if ((arg & TIOCM_DSR) &&
854 old.dsr != new.dsr)
855 break;
856 if ((arg & TIOCM_CD) &&
857 old.dcd != new.dcd)
858 break;
859 if ((arg & TIOCM_RI) &&
860 old.rng != new.rng)
861 break;
862
863 add_wait_queue(&acm->wioctl, &wait);
864 set_current_state(TASK_INTERRUPTIBLE);
865 schedule();
866 remove_wait_queue(&acm->wioctl, &wait);
867 if (acm->disconnected) {
868 if (arg & TIOCM_CD)
869 break;
870 else
871 rv = -ENODEV;
872 } else {
873 if (signal_pending(current))
874 rv = -ERESTARTSYS;
875 }
876 } while (!rv);
877
878
879
880 return rv;
881}
882
Oliver Neukum797ef132013-11-20 11:35:35 +0100883static int get_serial_usage(struct acm *acm,
884 struct serial_icounter_struct __user *count)
885{
886 struct serial_icounter_struct icount;
887 int rv = 0;
888
889 memset(&icount, 0, sizeof(icount));
890 icount.dsr = acm->iocount.dsr;
891 icount.rng = acm->iocount.rng;
892 icount.dcd = acm->iocount.dcd;
893 icount.frame = acm->iocount.frame;
894 icount.overrun = acm->iocount.overrun;
895 icount.parity = acm->iocount.parity;
896 icount.brk = acm->iocount.brk;
897
898 if (copy_to_user(count, &icount, sizeof(icount)) > 0)
899 rv = -EFAULT;
900
901 return rv;
902}
903
Alan Cox6caa76b2011-02-14 16:27:22 +0000904static int acm_tty_ioctl(struct tty_struct *tty,
Alan Cox6e47e062009-06-11 12:37:06 +0100905 unsigned int cmd, unsigned long arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700906{
Oliver Neukum18c75722012-02-17 17:21:24 -0500907 struct acm *acm = tty->driver_data;
908 int rv = -ENOIOCTLCMD;
909
910 switch (cmd) {
911 case TIOCGSERIAL: /* gets serial port data */
912 rv = get_serial_info(acm, (struct serial_struct __user *) arg);
913 break;
Dan Williamsba2d8ce2012-11-08 12:47:41 -0600914 case TIOCSSERIAL:
915 rv = set_serial_info(acm, (struct serial_struct __user *) arg);
916 break;
Oliver Neukum5a6a62b2013-11-20 11:35:34 +0100917 case TIOCMIWAIT:
Oliver Neukum8fdbeb22013-11-20 11:35:36 +0100918 rv = usb_autopm_get_interface(acm->control);
919 if (rv < 0) {
920 rv = -EIO;
921 break;
922 }
Oliver Neukum5a6a62b2013-11-20 11:35:34 +0100923 rv = wait_serial_change(acm, arg);
Oliver Neukum8fdbeb22013-11-20 11:35:36 +0100924 usb_autopm_put_interface(acm->control);
Oliver Neukum5a6a62b2013-11-20 11:35:34 +0100925 break;
Oliver Neukum797ef132013-11-20 11:35:35 +0100926 case TIOCGICOUNT:
927 rv = get_serial_usage(acm, (struct serial_icounter_struct __user *) arg);
928 break;
Oliver Neukum18c75722012-02-17 17:21:24 -0500929 }
930
931 return rv;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700932}
933
Alan Cox6e47e062009-06-11 12:37:06 +0100934static void acm_tty_set_termios(struct tty_struct *tty,
935 struct ktermios *termios_old)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700936{
937 struct acm *acm = tty->driver_data;
Alan Coxadc8d742012-07-14 15:31:47 +0100938 struct ktermios *termios = &tty->termios;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700939 struct usb_cdc_line_coding newline;
940 int newctrl = acm->ctrlout;
941
Alan Cox9b80fee2009-09-19 13:13:23 -0700942 newline.dwDTERate = cpu_to_le32(tty_get_baud_rate(tty));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700943 newline.bCharFormat = termios->c_cflag & CSTOPB ? 2 : 0;
944 newline.bParityType = termios->c_cflag & PARENB ?
Alan Cox6e47e062009-06-11 12:37:06 +0100945 (termios->c_cflag & PARODD ? 1 : 2) +
946 (termios->c_cflag & CMSPAR ? 2 : 0) : 0;
Nicolas Boullis301a29d2012-10-16 00:06:23 +0200947 switch (termios->c_cflag & CSIZE) {
948 case CS5:
949 newline.bDataBits = 5;
950 break;
951 case CS6:
952 newline.bDataBits = 6;
953 break;
954 case CS7:
955 newline.bDataBits = 7;
956 break;
957 case CS8:
958 default:
959 newline.bDataBits = 8;
960 break;
961 }
Alan Cox6e47e062009-06-11 12:37:06 +0100962 /* FIXME: Needs to clear unsupported bits in the termios */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700963 acm->clocal = ((termios->c_cflag & CLOCAL) != 0);
964
965 if (!newline.dwDTERate) {
966 newline.dwDTERate = acm->line.dwDTERate;
967 newctrl &= ~ACM_CTRL_DTR;
Alan Cox6e47e062009-06-11 12:37:06 +0100968 } else
969 newctrl |= ACM_CTRL_DTR;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700970
971 if (newctrl != acm->ctrlout)
972 acm_set_control(acm, acm->ctrlout = newctrl);
973
974 if (memcmp(&acm->line, &newline, sizeof newline)) {
975 memcpy(&acm->line, &newline, sizeof newline);
Johan Hovolda5cc7ef2011-03-22 11:12:15 +0100976 dev_dbg(&acm->control->dev, "%s - set line: %d %d %d %d\n",
977 __func__,
978 le32_to_cpu(newline.dwDTERate),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700979 newline.bCharFormat, newline.bParityType,
980 newline.bDataBits);
981 acm_set_line(acm, &acm->line);
982 }
983}
984
Havard Skinnemoen7fb57a02011-11-30 13:28:14 -0800985static const struct tty_port_operations acm_port_ops = {
986 .shutdown = acm_port_shutdown,
987 .activate = acm_port_activate,
988 .destruct = acm_port_destruct,
989};
990
Linus Torvalds1da177e2005-04-16 15:20:36 -0700991/*
992 * USB probe and disconnect routines.
993 */
994
Oliver Neukum830f4022008-06-25 14:17:16 +0200995/* Little helpers: write/read buffers free */
Oliver Neukum884b6002005-04-21 21:28:02 +0200996static void acm_write_buffers_free(struct acm *acm)
997{
998 int i;
999 struct acm_wb *wb;
Oliver Neukuma496c642008-10-21 10:39:04 +02001000 struct usb_device *usb_dev = interface_to_usbdev(acm->control);
Oliver Neukum884b6002005-04-21 21:28:02 +02001001
Alan Cox6e47e062009-06-11 12:37:06 +01001002 for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++)
Daniel Mack997ea582010-04-12 13:17:25 +02001003 usb_free_coherent(usb_dev, acm->writesize, wb->buf, wb->dmah);
Oliver Neukum884b6002005-04-21 21:28:02 +02001004}
1005
Oliver Neukum830f4022008-06-25 14:17:16 +02001006static void acm_read_buffers_free(struct acm *acm)
1007{
1008 struct usb_device *usb_dev = interface_to_usbdev(acm->control);
Johan Hovolddab54c92011-03-22 11:12:21 +01001009 int i;
Oliver Neukum830f4022008-06-25 14:17:16 +02001010
Johan Hovolddab54c92011-03-22 11:12:21 +01001011 for (i = 0; i < acm->rx_buflimit; i++)
Daniel Mack997ea582010-04-12 13:17:25 +02001012 usb_free_coherent(usb_dev, acm->readsize,
Johan Hovold088c64f2011-03-25 11:06:02 +01001013 acm->read_buffers[i].base, acm->read_buffers[i].dma);
Oliver Neukum830f4022008-06-25 14:17:16 +02001014}
1015
Oliver Neukum884b6002005-04-21 21:28:02 +02001016/* Little helper: write buffers allocate */
1017static int acm_write_buffers_alloc(struct acm *acm)
1018{
1019 int i;
1020 struct acm_wb *wb;
1021
Oliver Neukum86478942006-05-13 22:50:47 +02001022 for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++) {
Daniel Mack997ea582010-04-12 13:17:25 +02001023 wb->buf = usb_alloc_coherent(acm->dev, acm->writesize, GFP_KERNEL,
Oliver Neukum884b6002005-04-21 21:28:02 +02001024 &wb->dmah);
1025 if (!wb->buf) {
1026 while (i != 0) {
1027 --i;
1028 --wb;
Daniel Mack997ea582010-04-12 13:17:25 +02001029 usb_free_coherent(acm->dev, acm->writesize,
Oliver Neukum884b6002005-04-21 21:28:02 +02001030 wb->buf, wb->dmah);
1031 }
1032 return -ENOMEM;
1033 }
1034 }
1035 return 0;
1036}
1037
Alan Cox10077d42009-06-11 12:36:09 +01001038static int acm_probe(struct usb_interface *intf,
1039 const struct usb_device_id *id)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001040{
1041 struct usb_cdc_union_desc *union_header = NULL;
Oliver Neukumc4cabd22007-02-27 15:28:55 +01001042 struct usb_cdc_country_functional_desc *cfd = NULL;
David Brownellc6dbf552008-04-13 14:00:44 -07001043 unsigned char *buffer = intf->altsetting->extra;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001044 int buflen = intf->altsetting->extralen;
1045 struct usb_interface *control_interface;
1046 struct usb_interface *data_interface;
Oliver Neukuma2bfb4a2009-05-16 21:13:19 +02001047 struct usb_endpoint_descriptor *epctrl = NULL;
1048 struct usb_endpoint_descriptor *epread = NULL;
1049 struct usb_endpoint_descriptor *epwrite = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001050 struct usb_device *usb_dev = interface_to_usbdev(intf);
1051 struct acm *acm;
1052 int minor;
Alan Cox6e47e062009-06-11 12:37:06 +01001053 int ctrlsize, readsize;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001054 u8 *buf;
1055 u8 ac_management_function = 0;
1056 u8 call_management_function = 0;
1057 int call_interface_num = -1;
Erik Slagterfd5054c2011-05-11 12:06:55 +02001058 int data_interface_num = -1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001059 unsigned long quirks;
Oliver Neukum86478942006-05-13 22:50:47 +02001060 int num_rx_buf;
David Kubicek61a87ad2005-11-01 18:51:34 +01001061 int i;
Oliver Neukuma2bfb4a2009-05-16 21:13:19 +02001062 int combined_interfaces = 0;
Alexey Khoroshilovc93d8192013-03-16 01:30:32 +04001063 struct device *tty_dev;
1064 int rv = -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001065
Oliver Neukum86478942006-05-13 22:50:47 +02001066 /* normal quirks */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001067 quirks = (unsigned long)id->driver_info;
Dmitry Torokhov16142652013-02-02 11:02:14 -08001068
1069 if (quirks == IGNORE_DEVICE)
1070 return -ENODEV;
1071
Oliver Neukum86478942006-05-13 22:50:47 +02001072 num_rx_buf = (quirks == SINGLE_RX_URB) ? 1 : ACM_NR;
1073
1074 /* handle quirks deadly to normal probing*/
Linus Torvalds1da177e2005-04-16 15:20:36 -07001075 if (quirks == NO_UNION_NORMAL) {
1076 data_interface = usb_ifnum_to_if(usb_dev, 1);
1077 control_interface = usb_ifnum_to_if(usb_dev, 0);
1078 goto skip_normal_probe;
1079 }
Alan Cox6e47e062009-06-11 12:37:06 +01001080
Linus Torvalds1da177e2005-04-16 15:20:36 -07001081 /* normal probing*/
1082 if (!buffer) {
Greg Kroah-Hartman9908a322008-08-14 09:37:34 -07001083 dev_err(&intf->dev, "Weird descriptor references\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001084 return -EINVAL;
1085 }
1086
1087 if (!buflen) {
Toby Gray577045c2010-09-02 10:46:20 +01001088 if (intf->cur_altsetting->endpoint &&
1089 intf->cur_altsetting->endpoint->extralen &&
Alan Cox6e47e062009-06-11 12:37:06 +01001090 intf->cur_altsetting->endpoint->extra) {
1091 dev_dbg(&intf->dev,
1092 "Seeking extra descriptors on endpoint\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001093 buflen = intf->cur_altsetting->endpoint->extralen;
1094 buffer = intf->cur_altsetting->endpoint->extra;
1095 } else {
Greg Kroah-Hartman9908a322008-08-14 09:37:34 -07001096 dev_err(&intf->dev,
1097 "Zero length descriptor references\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001098 return -EINVAL;
1099 }
1100 }
1101
1102 while (buflen > 0) {
Alan Cox6e47e062009-06-11 12:37:06 +01001103 if (buffer[1] != USB_DT_CS_INTERFACE) {
Greg Kroah-Hartman9908a322008-08-14 09:37:34 -07001104 dev_err(&intf->dev, "skipping garbage\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001105 goto next_desc;
1106 }
1107
Alan Cox6e47e062009-06-11 12:37:06 +01001108 switch (buffer[2]) {
1109 case USB_CDC_UNION_TYPE: /* we've found it */
1110 if (union_header) {
1111 dev_err(&intf->dev, "More than one "
1112 "union descriptor, skipping ...\n");
1113 goto next_desc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001114 }
Alan Cox6e47e062009-06-11 12:37:06 +01001115 union_header = (struct usb_cdc_union_desc *)buffer;
1116 break;
1117 case USB_CDC_COUNTRY_TYPE: /* export through sysfs*/
1118 cfd = (struct usb_cdc_country_functional_desc *)buffer;
1119 break;
1120 case USB_CDC_HEADER_TYPE: /* maybe check version */
1121 break; /* for now we ignore it */
1122 case USB_CDC_ACM_TYPE:
1123 ac_management_function = buffer[3];
1124 break;
1125 case USB_CDC_CALL_MANAGEMENT_TYPE:
1126 call_management_function = buffer[3];
1127 call_interface_num = buffer[4];
Jeffrin Jose02f824a2012-07-01 21:25:16 +05301128 if ((quirks & NOT_A_MODEM) == 0 && (call_management_function & 3) != 3)
Alan Cox6e47e062009-06-11 12:37:06 +01001129 dev_err(&intf->dev, "This device cannot do calls on its own. It is not a modem.\n");
1130 break;
1131 default:
1132 /* there are LOTS more CDC descriptors that
1133 * could legitimately be found here.
1134 */
1135 dev_dbg(&intf->dev, "Ignoring descriptor: "
1136 "type %02x, length %d\n",
1137 buffer[2], buffer[0]);
1138 break;
1139 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001140next_desc:
1141 buflen -= buffer[0];
1142 buffer += buffer[0];
1143 }
1144
1145 if (!union_header) {
1146 if (call_interface_num > 0) {
Alan Cox6e47e062009-06-11 12:37:06 +01001147 dev_dbg(&intf->dev, "No union descriptor, using call management descriptor\n");
Erik Slagterfd5054c2011-05-11 12:06:55 +02001148 /* quirks for Droids MuIn LCD */
1149 if (quirks & NO_DATA_INTERFACE)
1150 data_interface = usb_ifnum_to_if(usb_dev, 0);
1151 else
1152 data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = call_interface_num));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001153 control_interface = intf;
1154 } else {
Oliver Neukuma2bfb4a2009-05-16 21:13:19 +02001155 if (intf->cur_altsetting->desc.bNumEndpoints != 3) {
1156 dev_dbg(&intf->dev,"No union descriptor, giving up\n");
1157 return -ENODEV;
1158 } else {
1159 dev_warn(&intf->dev,"No union descriptor, testing for castrated device\n");
1160 combined_interfaces = 1;
1161 control_interface = data_interface = intf;
1162 goto look_for_collapsed_interface;
1163 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001164 }
1165 } else {
1166 control_interface = usb_ifnum_to_if(usb_dev, union_header->bMasterInterface0);
1167 data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = union_header->bSlaveInterface0));
1168 if (!control_interface || !data_interface) {
Alan Cox6e47e062009-06-11 12:37:06 +01001169 dev_dbg(&intf->dev, "no interfaces\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001170 return -ENODEV;
1171 }
1172 }
Alan Cox6e47e062009-06-11 12:37:06 +01001173
Linus Torvalds1da177e2005-04-16 15:20:36 -07001174 if (data_interface_num != call_interface_num)
Alan Cox6e47e062009-06-11 12:37:06 +01001175 dev_dbg(&intf->dev, "Separate call control interface. That is not fully supported.\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001176
Oliver Neukuma2bfb4a2009-05-16 21:13:19 +02001177 if (control_interface == data_interface) {
1178 /* some broken devices designed for windows work this way */
1179 dev_warn(&intf->dev,"Control and data interfaces are not separated!\n");
1180 combined_interfaces = 1;
1181 /* a popular other OS doesn't use it */
1182 quirks |= NO_CAP_LINE;
1183 if (data_interface->cur_altsetting->desc.bNumEndpoints != 3) {
1184 dev_err(&intf->dev, "This needs exactly 3 endpoints\n");
1185 return -EINVAL;
1186 }
1187look_for_collapsed_interface:
1188 for (i = 0; i < 3; i++) {
1189 struct usb_endpoint_descriptor *ep;
1190 ep = &data_interface->cur_altsetting->endpoint[i].desc;
1191
1192 if (usb_endpoint_is_int_in(ep))
1193 epctrl = ep;
1194 else if (usb_endpoint_is_bulk_out(ep))
1195 epwrite = ep;
1196 else if (usb_endpoint_is_bulk_in(ep))
1197 epread = ep;
1198 else
1199 return -EINVAL;
1200 }
1201 if (!epctrl || !epread || !epwrite)
1202 return -ENODEV;
1203 else
1204 goto made_compressed_probe;
1205 }
1206
Linus Torvalds1da177e2005-04-16 15:20:36 -07001207skip_normal_probe:
1208
1209 /*workaround for switched interfaces */
Alan Cox6e47e062009-06-11 12:37:06 +01001210 if (data_interface->cur_altsetting->desc.bInterfaceClass
1211 != CDC_DATA_INTERFACE_TYPE) {
1212 if (control_interface->cur_altsetting->desc.bInterfaceClass
1213 == CDC_DATA_INTERFACE_TYPE) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001214 struct usb_interface *t;
Alan Cox6e47e062009-06-11 12:37:06 +01001215 dev_dbg(&intf->dev,
1216 "Your device has switched interfaces.\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001217 t = control_interface;
1218 control_interface = data_interface;
1219 data_interface = t;
1220 } else {
1221 return -EINVAL;
1222 }
1223 }
Alan Stern74da5d62007-08-02 13:29:10 -04001224
1225 /* Accept probe requests only for the control interface */
Oliver Neukuma2bfb4a2009-05-16 21:13:19 +02001226 if (!combined_interfaces && intf != control_interface)
Alan Stern74da5d62007-08-02 13:29:10 -04001227 return -ENODEV;
Alan Cox6e47e062009-06-11 12:37:06 +01001228
Oliver Neukuma2bfb4a2009-05-16 21:13:19 +02001229 if (!combined_interfaces && usb_interface_claimed(data_interface)) {
1230 /* valid in this context */
Alan Cox6e47e062009-06-11 12:37:06 +01001231 dev_dbg(&intf->dev, "The data interface isn't available\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001232 return -EBUSY;
1233 }
1234
1235
Sven Schnelle99f347c2012-08-17 21:43:43 +02001236 if (data_interface->cur_altsetting->desc.bNumEndpoints < 2 ||
1237 control_interface->cur_altsetting->desc.bNumEndpoints == 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001238 return -EINVAL;
1239
1240 epctrl = &control_interface->cur_altsetting->endpoint[0].desc;
1241 epread = &data_interface->cur_altsetting->endpoint[0].desc;
1242 epwrite = &data_interface->cur_altsetting->endpoint[1].desc;
1243
1244
1245 /* workaround for switched endpoints */
Luiz Fernando N. Capitulino45aea702006-10-26 13:02:48 -03001246 if (!usb_endpoint_dir_in(epread)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001247 /* descriptors are swapped */
1248 struct usb_endpoint_descriptor *t;
Alan Cox6e47e062009-06-11 12:37:06 +01001249 dev_dbg(&intf->dev,
1250 "The data interface has switched endpoints\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001251 t = epread;
1252 epread = epwrite;
1253 epwrite = t;
1254 }
Oliver Neukuma2bfb4a2009-05-16 21:13:19 +02001255made_compressed_probe:
Johan Hovolda5cc7ef2011-03-22 11:12:15 +01001256 dev_dbg(&intf->dev, "interfaces are valid\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001257
Alan Cox6e47e062009-06-11 12:37:06 +01001258 acm = kzalloc(sizeof(struct acm), GFP_KERNEL);
1259 if (acm == NULL) {
Johan Hovold255ab562011-03-22 11:12:13 +01001260 dev_err(&intf->dev, "out of memory (acm kzalloc)\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001261 goto alloc_fail;
1262 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001263
Havard Skinnemoen7fb57a02011-11-30 13:28:14 -08001264 minor = acm_alloc_minor(acm);
1265 if (minor == ACM_TTY_MINORS) {
1266 dev_err(&intf->dev, "no more free acm devices\n");
1267 kfree(acm);
1268 return -ENODEV;
1269 }
1270
Kuninori Morimoto29cc8892011-08-23 03:12:03 -07001271 ctrlsize = usb_endpoint_maxp(epctrl);
1272 readsize = usb_endpoint_maxp(epread) *
Alan Cox6e47e062009-06-11 12:37:06 +01001273 (quirks == SINGLE_RX_URB ? 1 : 2);
Oliver Neukuma2bfb4a2009-05-16 21:13:19 +02001274 acm->combined_interfaces = combined_interfaces;
Kuninori Morimoto29cc8892011-08-23 03:12:03 -07001275 acm->writesize = usb_endpoint_maxp(epwrite) * 20;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001276 acm->control = control_interface;
1277 acm->data = data_interface;
1278 acm->minor = minor;
1279 acm->dev = usb_dev;
1280 acm->ctrl_caps = ac_management_function;
Oliver Neukuma2bfb4a2009-05-16 21:13:19 +02001281 if (quirks & NO_CAP_LINE)
1282 acm->ctrl_caps &= ~USB_CDC_CAP_LINE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001283 acm->ctrlsize = ctrlsize;
1284 acm->readsize = readsize;
Oliver Neukum86478942006-05-13 22:50:47 +02001285 acm->rx_buflimit = num_rx_buf;
David Howellsc4028952006-11-22 14:57:56 +00001286 INIT_WORK(&acm->work, acm_softint);
Oliver Neukum5a6a62b2013-11-20 11:35:34 +01001287 init_waitqueue_head(&acm->wioctl);
Oliver Neukum884b6002005-04-21 21:28:02 +02001288 spin_lock_init(&acm->write_lock);
David Kubicek61a87ad2005-11-01 18:51:34 +01001289 spin_lock_init(&acm->read_lock);
Oliver Neukum1365baf2007-10-12 17:24:28 +02001290 mutex_init(&acm->mutex);
David Kubicek61a87ad2005-11-01 18:51:34 +01001291 acm->rx_endpoint = usb_rcvbulkpipe(usb_dev, epread->bEndpointAddress);
Oliver Neukumcf7fdd52009-08-04 23:52:09 +02001292 acm->is_int_ep = usb_endpoint_xfer_int(epread);
1293 if (acm->is_int_ep)
1294 acm->bInterval = epread->bInterval;
Alan Cox739e0282009-06-11 12:27:50 +01001295 tty_port_init(&acm->port);
1296 acm->port.ops = &acm_port_ops;
Johan Hovold140cb812014-05-26 19:23:38 +02001297 init_usb_anchor(&acm->delayed);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001298
Daniel Mack997ea582010-04-12 13:17:25 +02001299 buf = usb_alloc_coherent(usb_dev, ctrlsize, GFP_KERNEL, &acm->ctrl_dma);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001300 if (!buf) {
Johan Hovold255ab562011-03-22 11:12:13 +01001301 dev_err(&intf->dev, "out of memory (ctrl buffer alloc)\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001302 goto alloc_fail2;
1303 }
1304 acm->ctrl_buffer = buf;
1305
Oliver Neukum884b6002005-04-21 21:28:02 +02001306 if (acm_write_buffers_alloc(acm) < 0) {
Johan Hovold255ab562011-03-22 11:12:13 +01001307 dev_err(&intf->dev, "out of memory (write buffer alloc)\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001308 goto alloc_fail4;
1309 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001310
1311 acm->ctrlurb = usb_alloc_urb(0, GFP_KERNEL);
1312 if (!acm->ctrlurb) {
Johan Hovold255ab562011-03-22 11:12:13 +01001313 dev_err(&intf->dev, "out of memory (ctrlurb kmalloc)\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001314 goto alloc_fail5;
1315 }
Oliver Neukum86478942006-05-13 22:50:47 +02001316 for (i = 0; i < num_rx_buf; i++) {
Johan Hovold088c64f2011-03-25 11:06:02 +01001317 struct acm_rb *rb = &(acm->read_buffers[i]);
1318 struct urb *urb;
David Kubicek61a87ad2005-11-01 18:51:34 +01001319
Johan Hovold74f5e1b2011-03-22 11:12:23 +01001320 rb->base = usb_alloc_coherent(acm->dev, readsize, GFP_KERNEL,
1321 &rb->dma);
1322 if (!rb->base) {
1323 dev_err(&intf->dev, "out of memory "
1324 "(read bufs usb_alloc_coherent)\n");
1325 goto alloc_fail6;
1326 }
Johan Hovold088c64f2011-03-25 11:06:02 +01001327 rb->index = i;
1328 rb->instance = acm;
Johan Hovold74f5e1b2011-03-22 11:12:23 +01001329
Johan Hovold088c64f2011-03-25 11:06:02 +01001330 urb = usb_alloc_urb(0, GFP_KERNEL);
1331 if (!urb) {
Johan Hovold255ab562011-03-22 11:12:13 +01001332 dev_err(&intf->dev,
Alan Cox6e47e062009-06-11 12:37:06 +01001333 "out of memory (read urbs usb_alloc_urb)\n");
Axel Linc2572b72010-05-31 08:04:47 +08001334 goto alloc_fail6;
David Kubicek61a87ad2005-11-01 18:51:34 +01001335 }
Johan Hovold088c64f2011-03-25 11:06:02 +01001336 urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1337 urb->transfer_dma = rb->dma;
1338 if (acm->is_int_ep) {
1339 usb_fill_int_urb(urb, acm->dev,
1340 acm->rx_endpoint,
1341 rb->base,
1342 acm->readsize,
1343 acm_read_bulk_callback, rb,
1344 acm->bInterval);
1345 } else {
1346 usb_fill_bulk_urb(urb, acm->dev,
1347 acm->rx_endpoint,
1348 rb->base,
1349 acm->readsize,
1350 acm_read_bulk_callback, rb);
1351 }
David Kubicek61a87ad2005-11-01 18:51:34 +01001352
Johan Hovold088c64f2011-03-25 11:06:02 +01001353 acm->read_urbs[i] = urb;
1354 __set_bit(i, &acm->read_urbs_free);
David Kubicek61a87ad2005-11-01 18:51:34 +01001355 }
Alan Cox6e47e062009-06-11 12:37:06 +01001356 for (i = 0; i < ACM_NW; i++) {
David Engrafe4cf3aa2008-03-20 10:01:34 +01001357 struct acm_wb *snd = &(acm->wb[i]);
1358
Alan Cox6e47e062009-06-11 12:37:06 +01001359 snd->urb = usb_alloc_urb(0, GFP_KERNEL);
1360 if (snd->urb == NULL) {
Johan Hovold255ab562011-03-22 11:12:13 +01001361 dev_err(&intf->dev,
Johan Hovold59d7fec2011-03-22 11:12:12 +01001362 "out of memory (write urbs usb_alloc_urb)\n");
Johan Hovold74f5e1b2011-03-22 11:12:23 +01001363 goto alloc_fail7;
David Engrafe4cf3aa2008-03-20 10:01:34 +01001364 }
1365
Arseniy Lartsev5186ffe2009-07-01 16:27:26 +04001366 if (usb_endpoint_xfer_int(epwrite))
1367 usb_fill_int_urb(snd->urb, usb_dev,
Ming Leic5211182012-10-16 21:21:21 +08001368 usb_sndintpipe(usb_dev, epwrite->bEndpointAddress),
Arseniy Lartsev5186ffe2009-07-01 16:27:26 +04001369 NULL, acm->writesize, acm_write_bulk, snd, epwrite->bInterval);
1370 else
1371 usb_fill_bulk_urb(snd->urb, usb_dev,
1372 usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress),
1373 NULL, acm->writesize, acm_write_bulk, snd);
David Engrafe4cf3aa2008-03-20 10:01:34 +01001374 snd->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1375 snd->instance = acm;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001376 }
1377
Alan Cox6e47e062009-06-11 12:37:06 +01001378 usb_set_intfdata(intf, acm);
Oliver Neukumc4cabd22007-02-27 15:28:55 +01001379
1380 i = device_create_file(&intf->dev, &dev_attr_bmCapabilities);
1381 if (i < 0)
Johan Hovold74f5e1b2011-03-22 11:12:23 +01001382 goto alloc_fail7;
Oliver Neukumc4cabd22007-02-27 15:28:55 +01001383
1384 if (cfd) { /* export the country data */
1385 acm->country_codes = kmalloc(cfd->bLength - 4, GFP_KERNEL);
1386 if (!acm->country_codes)
1387 goto skip_countries;
1388 acm->country_code_size = cfd->bLength - 4;
Alan Cox6e47e062009-06-11 12:37:06 +01001389 memcpy(acm->country_codes, (u8 *)&cfd->wCountyCode0,
1390 cfd->bLength - 4);
Oliver Neukumc4cabd22007-02-27 15:28:55 +01001391 acm->country_rel_date = cfd->iCountryCodeRelDate;
1392
1393 i = device_create_file(&intf->dev, &dev_attr_wCountryCodes);
1394 if (i < 0) {
1395 kfree(acm->country_codes);
Julia Lawalle7c8e862011-12-23 14:02:55 +01001396 acm->country_codes = NULL;
1397 acm->country_code_size = 0;
Oliver Neukumc4cabd22007-02-27 15:28:55 +01001398 goto skip_countries;
1399 }
1400
Alan Cox6e47e062009-06-11 12:37:06 +01001401 i = device_create_file(&intf->dev,
1402 &dev_attr_iCountryCodeRelDate);
Oliver Neukumc4cabd22007-02-27 15:28:55 +01001403 if (i < 0) {
Axel Linc2572b72010-05-31 08:04:47 +08001404 device_remove_file(&intf->dev, &dev_attr_wCountryCodes);
Oliver Neukumc4cabd22007-02-27 15:28:55 +01001405 kfree(acm->country_codes);
Julia Lawalle7c8e862011-12-23 14:02:55 +01001406 acm->country_codes = NULL;
1407 acm->country_code_size = 0;
Oliver Neukumc4cabd22007-02-27 15:28:55 +01001408 goto skip_countries;
1409 }
1410 }
1411
1412skip_countries:
Alan Cox6e47e062009-06-11 12:37:06 +01001413 usb_fill_int_urb(acm->ctrlurb, usb_dev,
Oliver Neukuma2bfb4a2009-05-16 21:13:19 +02001414 usb_rcvintpipe(usb_dev, epctrl->bEndpointAddress),
1415 acm->ctrl_buffer, ctrlsize, acm_ctrl_irq, acm,
1416 /* works around buggy devices */
Felipe Balbid102e782013-07-01 11:23:24 +03001417 epctrl->bInterval ? epctrl->bInterval : 16);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001418 acm->ctrlurb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1419 acm->ctrlurb->transfer_dma = acm->ctrl_dma;
1420
Linus Torvalds1da177e2005-04-16 15:20:36 -07001421 dev_info(&intf->dev, "ttyACM%d: USB ACM device\n", minor);
1422
1423 acm_set_control(acm, acm->ctrlout);
1424
1425 acm->line.dwDTERate = cpu_to_le32(9600);
1426 acm->line.bDataBits = 8;
1427 acm_set_line(acm, &acm->line);
1428
1429 usb_driver_claim_interface(&acm_driver, data_interface, acm);
David Brownell672c4e12008-08-06 18:41:12 -07001430 usb_set_intfdata(data_interface, acm);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001431
brian@murphy.dk83ef3442005-06-29 16:53:29 -07001432 usb_get_intf(control_interface);
Alexey Khoroshilovc93d8192013-03-16 01:30:32 +04001433 tty_dev = tty_port_register_device(&acm->port, acm_tty_driver, minor,
Jiri Slaby734cc172012-08-07 21:47:47 +02001434 &control_interface->dev);
Alexey Khoroshilovc93d8192013-03-16 01:30:32 +04001435 if (IS_ERR(tty_dev)) {
1436 rv = PTR_ERR(tty_dev);
1437 goto alloc_fail8;
1438 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001439
Oliver Neukumc4cabd22007-02-27 15:28:55 +01001440 return 0;
Alexey Khoroshilovc93d8192013-03-16 01:30:32 +04001441alloc_fail8:
1442 if (acm->country_codes) {
1443 device_remove_file(&acm->control->dev,
1444 &dev_attr_wCountryCodes);
1445 device_remove_file(&acm->control->dev,
1446 &dev_attr_iCountryCodeRelDate);
1447 }
1448 device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities);
Johan Hovold74f5e1b2011-03-22 11:12:23 +01001449alloc_fail7:
Alexey Khoroshilovc93d8192013-03-16 01:30:32 +04001450 usb_set_intfdata(intf, NULL);
David Engrafe4cf3aa2008-03-20 10:01:34 +01001451 for (i = 0; i < ACM_NW; i++)
1452 usb_free_urb(acm->wb[i].urb);
Axel Linc2572b72010-05-31 08:04:47 +08001453alloc_fail6:
Oliver Neukum86478942006-05-13 22:50:47 +02001454 for (i = 0; i < num_rx_buf; i++)
Johan Hovold088c64f2011-03-25 11:06:02 +01001455 usb_free_urb(acm->read_urbs[i]);
Johan Hovold74f5e1b2011-03-22 11:12:23 +01001456 acm_read_buffers_free(acm);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001457 usb_free_urb(acm->ctrlurb);
1458alloc_fail5:
Oliver Neukum884b6002005-04-21 21:28:02 +02001459 acm_write_buffers_free(acm);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001460alloc_fail4:
Daniel Mack997ea582010-04-12 13:17:25 +02001461 usb_free_coherent(usb_dev, ctrlsize, acm->ctrl_buffer, acm->ctrl_dma);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001462alloc_fail2:
Havard Skinnemoen7fb57a02011-11-30 13:28:14 -08001463 acm_release_minor(acm);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001464 kfree(acm);
1465alloc_fail:
Alexey Khoroshilovc93d8192013-03-16 01:30:32 +04001466 return rv;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001467}
1468
Oliver Neukum1365baf2007-10-12 17:24:28 +02001469static void stop_data_traffic(struct acm *acm)
1470{
1471 int i;
Johan Hovolda5cc7ef2011-03-22 11:12:15 +01001472
1473 dev_dbg(&acm->control->dev, "%s\n", __func__);
Oliver Neukum1365baf2007-10-12 17:24:28 +02001474
Oliver Neukum1365baf2007-10-12 17:24:28 +02001475 usb_kill_urb(acm->ctrlurb);
Alan Cox6e47e062009-06-11 12:37:06 +01001476 for (i = 0; i < ACM_NW; i++)
David Engrafe4cf3aa2008-03-20 10:01:34 +01001477 usb_kill_urb(acm->wb[i].urb);
Oliver Neukum1365baf2007-10-12 17:24:28 +02001478 for (i = 0; i < acm->rx_buflimit; i++)
Johan Hovold088c64f2011-03-25 11:06:02 +01001479 usb_kill_urb(acm->read_urbs[i]);
Oliver Neukum1365baf2007-10-12 17:24:28 +02001480
1481 cancel_work_sync(&acm->work);
1482}
1483
Linus Torvalds1da177e2005-04-16 15:20:36 -07001484static void acm_disconnect(struct usb_interface *intf)
1485{
Oliver Neukumc4cabd22007-02-27 15:28:55 +01001486 struct acm *acm = usb_get_intfdata(intf);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001487 struct usb_device *usb_dev = interface_to_usbdev(intf);
Alan Cox10077d42009-06-11 12:36:09 +01001488 struct tty_struct *tty;
Havard Skinnemoen7fb57a02011-11-30 13:28:14 -08001489 int i;
1490
1491 dev_dbg(&intf->dev, "%s\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001492
David Brownell672c4e12008-08-06 18:41:12 -07001493 /* sibling interface is already cleaning up */
1494 if (!acm)
Oliver Neukum86067eea2006-01-08 12:39:13 +01001495 return;
David Brownell672c4e12008-08-06 18:41:12 -07001496
Havard Skinnemoen7fb57a02011-11-30 13:28:14 -08001497 mutex_lock(&acm->mutex);
1498 acm->disconnected = true;
Alan Cox6e47e062009-06-11 12:37:06 +01001499 if (acm->country_codes) {
Alan Stern74da5d62007-08-02 13:29:10 -04001500 device_remove_file(&acm->control->dev,
1501 &dev_attr_wCountryCodes);
1502 device_remove_file(&acm->control->dev,
1503 &dev_attr_iCountryCodeRelDate);
Oliver Neukumc4cabd22007-02-27 15:28:55 +01001504 }
Oliver Neukum5a6a62b2013-11-20 11:35:34 +01001505 wake_up_all(&acm->wioctl);
Alan Stern74da5d62007-08-02 13:29:10 -04001506 device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities);
Oliver Neukum86067eea2006-01-08 12:39:13 +01001507 usb_set_intfdata(acm->control, NULL);
1508 usb_set_intfdata(acm->data, NULL);
Havard Skinnemoen7fb57a02011-11-30 13:28:14 -08001509 mutex_unlock(&acm->mutex);
1510
1511 tty = tty_port_tty_get(&acm->port);
1512 if (tty) {
1513 tty_vhangup(tty);
1514 tty_kref_put(tty);
1515 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001516
Oliver Neukum1365baf2007-10-12 17:24:28 +02001517 stop_data_traffic(acm);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001518
Johan Hovoldcb255052013-03-19 09:21:06 +01001519 tty_unregister_device(acm_tty_driver, acm->minor);
1520
Havard Skinnemoen7fb57a02011-11-30 13:28:14 -08001521 usb_free_urb(acm->ctrlurb);
1522 for (i = 0; i < ACM_NW; i++)
1523 usb_free_urb(acm->wb[i].urb);
1524 for (i = 0; i < acm->rx_buflimit; i++)
1525 usb_free_urb(acm->read_urbs[i]);
Oliver Neukum884b6002005-04-21 21:28:02 +02001526 acm_write_buffers_free(acm);
Havard Skinnemoen7fb57a02011-11-30 13:28:14 -08001527 usb_free_coherent(usb_dev, acm->ctrlsize, acm->ctrl_buffer, acm->ctrl_dma);
Oliver Neukum830f4022008-06-25 14:17:16 +02001528 acm_read_buffers_free(acm);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001529
Oliver Neukuma2bfb4a2009-05-16 21:13:19 +02001530 if (!acm->combined_interfaces)
1531 usb_driver_release_interface(&acm_driver, intf == acm->control ?
Oliver Neukum830f4022008-06-25 14:17:16 +02001532 acm->data : acm->control);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001533
Havard Skinnemoen7fb57a02011-11-30 13:28:14 -08001534 tty_port_put(&acm->port);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001535}
1536
Oliver Neukum35758582008-07-01 19:10:08 +02001537#ifdef CONFIG_PM
Oliver Neukum1365baf2007-10-12 17:24:28 +02001538static int acm_suspend(struct usb_interface *intf, pm_message_t message)
1539{
1540 struct acm *acm = usb_get_intfdata(intf);
Oliver Neukum11ea8592008-06-20 11:25:57 +02001541 int cnt;
Oliver Neukum1365baf2007-10-12 17:24:28 +02001542
Oliver Neukum11ea8592008-06-20 11:25:57 +02001543 spin_lock_irq(&acm->read_lock);
1544 spin_lock(&acm->write_lock);
Johan Hovold5a345c22014-05-26 19:23:36 +02001545 if (PMSG_IS_AUTO(message)) {
1546 if (acm->transmitting) {
1547 spin_unlock(&acm->write_lock);
1548 spin_unlock_irq(&acm->read_lock);
1549 return -EBUSY;
1550 }
1551 }
Oliver Neukum11ea8592008-06-20 11:25:57 +02001552 cnt = acm->susp_count++;
1553 spin_unlock(&acm->write_lock);
1554 spin_unlock_irq(&acm->read_lock);
1555
1556 if (cnt)
Oliver Neukum1365baf2007-10-12 17:24:28 +02001557 return 0;
Oliver Neukum1365baf2007-10-12 17:24:28 +02001558
Johan Hovolded797072014-05-26 19:23:40 +02001559 stop_data_traffic(acm);
Oliver Neukum1365baf2007-10-12 17:24:28 +02001560
Oliver Neukum1365baf2007-10-12 17:24:28 +02001561 return 0;
1562}
1563
1564static int acm_resume(struct usb_interface *intf)
1565{
1566 struct acm *acm = usb_get_intfdata(intf);
Johan Hovold140cb812014-05-26 19:23:38 +02001567 struct urb *urb;
Oliver Neukum1365baf2007-10-12 17:24:28 +02001568 int rv = 0;
1569
Oliver Neukum11ea8592008-06-20 11:25:57 +02001570 spin_lock_irq(&acm->read_lock);
Johan Hovolde144ed22014-05-26 19:23:37 +02001571 spin_lock(&acm->write_lock);
Oliver Neukum11ea8592008-06-20 11:25:57 +02001572
Johan Hovolde144ed22014-05-26 19:23:37 +02001573 if (--acm->susp_count)
1574 goto out;
Oliver Neukum1365baf2007-10-12 17:24:28 +02001575
Havard Skinnemoen7fb57a02011-11-30 13:28:14 -08001576 if (test_bit(ASYNCB_INITIALIZED, &acm->port.flags)) {
Johan Hovolde144ed22014-05-26 19:23:37 +02001577 rv = usb_submit_urb(acm->ctrlurb, GFP_ATOMIC);
Oliver Neukum97d35f92009-12-16 17:05:57 +01001578
Johan Hovold140cb812014-05-26 19:23:38 +02001579 for (;;) {
1580 urb = usb_get_from_anchor(&acm->delayed);
1581 if (!urb)
1582 break;
1583
1584 acm_start_wb(acm, urb->context);
Oliver Neukum97d35f92009-12-16 17:05:57 +01001585 }
1586
1587 /*
1588 * delayed error checking because we must
1589 * do the write path at all cost
1590 */
Oliver Neukum1365baf2007-10-12 17:24:28 +02001591 if (rv < 0)
Johan Hovolde144ed22014-05-26 19:23:37 +02001592 goto out;
Oliver Neukum1365baf2007-10-12 17:24:28 +02001593
Johan Hovolde144ed22014-05-26 19:23:37 +02001594 rv = acm_submit_read_urbs(acm, GFP_ATOMIC);
Oliver Neukum1365baf2007-10-12 17:24:28 +02001595 }
Johan Hovolde144ed22014-05-26 19:23:37 +02001596out:
1597 spin_unlock(&acm->write_lock);
1598 spin_unlock_irq(&acm->read_lock);
Oliver Neukum1365baf2007-10-12 17:24:28 +02001599
Oliver Neukum1365baf2007-10-12 17:24:28 +02001600 return rv;
1601}
Oliver Neukum35758582008-07-01 19:10:08 +02001602
Francesco Lavraa91b0c52009-12-08 09:54:11 +01001603static int acm_reset_resume(struct usb_interface *intf)
1604{
1605 struct acm *acm = usb_get_intfdata(intf);
Francesco Lavraa91b0c52009-12-08 09:54:11 +01001606
Jiri Slabyaa27a092013-03-07 13:12:30 +01001607 if (test_bit(ASYNCB_INITIALIZED, &acm->port.flags))
1608 tty_port_tty_hangup(&acm->port, false);
Havard Skinnemoen7fb57a02011-11-30 13:28:14 -08001609
Francesco Lavraa91b0c52009-12-08 09:54:11 +01001610 return acm_resume(intf);
1611}
1612
Oliver Neukum35758582008-07-01 19:10:08 +02001613#endif /* CONFIG_PM */
Adrian Taylorc1479a92009-11-19 10:35:33 +00001614
1615#define NOKIA_PCSUITE_ACM_INFO(x) \
1616 USB_DEVICE_AND_INTERFACE_INFO(0x0421, x, \
1617 USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, \
1618 USB_CDC_ACM_PROTO_VENDOR)
1619
Toby Gray4035e452010-09-01 16:01:19 +01001620#define SAMSUNG_PCSUITE_ACM_INFO(x) \
1621 USB_DEVICE_AND_INTERFACE_INFO(0x04e7, x, \
1622 USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, \
1623 USB_CDC_ACM_PROTO_VENDOR)
1624
Linus Torvalds1da177e2005-04-16 15:20:36 -07001625/*
1626 * USB driver structure.
1627 */
1628
Németh Márton6ef48522010-01-10 15:33:45 +01001629static const struct usb_device_id acm_ids[] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001630 /* quirky and broken devices */
David Cluytens3b59d162013-12-03 14:18:57 +01001631 { USB_DEVICE(0x17ef, 0x7000), /* Lenovo USB modem */
1632 .driver_info = NO_UNION_NORMAL, },/* has no union descriptor */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001633 { USB_DEVICE(0x0870, 0x0001), /* Metricom GS Modem */
1634 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1635 },
Andrey Arapovb0e2a702007-07-04 17:11:42 +02001636 { USB_DEVICE(0x0e8d, 0x0003), /* FIREFLY, MediaTek Inc; andrey.arapov@gmail.com */
1637 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1638 },
Andrew Lunn0f9c7b4a2008-12-23 17:31:23 +01001639 { USB_DEVICE(0x0e8d, 0x3329), /* MediaTek Inc GPS */
1640 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1641 },
Masahito Omote8753e652005-07-29 12:17:25 -07001642 { USB_DEVICE(0x0482, 0x0203), /* KYOCERA AH-K3001V */
1643 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1644 },
Chris Malley91a9c922006-10-03 10:08:28 +01001645 { USB_DEVICE(0x079b, 0x000f), /* BT On-Air USB MODEM */
1646 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1647 },
Alan Cox7abcf202009-04-06 17:35:01 +01001648 { USB_DEVICE(0x0ace, 0x1602), /* ZyDAS 56K USB MODEM */
1649 .driver_info = SINGLE_RX_URB,
1650 },
Oliver Neukum86478942006-05-13 22:50:47 +02001651 { USB_DEVICE(0x0ace, 0x1608), /* ZyDAS 56K USB MODEM */
1652 .driver_info = SINGLE_RX_URB, /* firmware bug */
1653 },
Oliver Neukum3dd2ae82006-06-23 09:14:17 +02001654 { USB_DEVICE(0x0ace, 0x1611), /* ZyDAS 56K USB MODEM - new version */
1655 .driver_info = SINGLE_RX_URB, /* firmware bug */
1656 },
Oliver Neukum9be84562007-02-12 08:50:03 +01001657 { USB_DEVICE(0x22b8, 0x7000), /* Motorola Q Phone */
1658 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1659 },
Iain McFarlane6149ed52008-05-04 00:13:49 +01001660 { USB_DEVICE(0x0803, 0x3095), /* Zoom Telephonics Model 3095F USB MODEM */
1661 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1662 },
Eric Sandeenc8fd2c32008-08-14 08:25:40 -05001663 { USB_DEVICE(0x0572, 0x1321), /* Conexant USB MODEM CX93010 */
1664 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1665 },
Alan Coxc89c60e2009-01-11 19:53:10 +00001666 { USB_DEVICE(0x0572, 0x1324), /* Conexant USB MODEM RD02-D400 */
1667 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1668 },
Xiao Kaijiancab98a02009-05-08 00:48:23 +08001669 { USB_DEVICE(0x0572, 0x1328), /* Shiro / Aztech USB MODEM UM-3100 */
1670 .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
1671 },
Dmitriy Taychenachev155df652009-02-25 12:36:51 +08001672 { USB_DEVICE(0x22b8, 0x6425), /* Motorola MOTOMAGX phones */
1673 },
Krzysztof Hałasa6abff5d2011-12-12 14:51:00 +01001674 /* Motorola H24 HSPA module: */
1675 { USB_DEVICE(0x22b8, 0x2d91) }, /* modem */
Michael Ulbricht895d2402014-03-25 10:34:18 +01001676 { USB_DEVICE(0x22b8, 0x2d92), /* modem + diagnostics */
1677 .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
1678 },
1679 { USB_DEVICE(0x22b8, 0x2d93), /* modem + AT port */
1680 .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
1681 },
1682 { USB_DEVICE(0x22b8, 0x2d95), /* modem + AT port + diagnostics */
1683 .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
1684 },
1685 { USB_DEVICE(0x22b8, 0x2d96), /* modem + NMEA */
1686 .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
1687 },
1688 { USB_DEVICE(0x22b8, 0x2d97), /* modem + diagnostics + NMEA */
1689 .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
1690 },
1691 { USB_DEVICE(0x22b8, 0x2d99), /* modem + AT port + NMEA */
1692 .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
1693 },
1694 { USB_DEVICE(0x22b8, 0x2d9a), /* modem + AT port + diagnostics + NMEA */
1695 .driver_info = NO_UNION_NORMAL, /* handle only modem interface */
1696 },
Krzysztof Hałasa6abff5d2011-12-12 14:51:00 +01001697
Adam Richterc332b4e2009-02-18 16:17:15 -08001698 { USB_DEVICE(0x0572, 0x1329), /* Hummingbird huc56s (Conexant) */
1699 .driver_info = NO_UNION_NORMAL, /* union descriptor misplaced on
1700 data interface instead of
1701 communications interface.
1702 Maybe we should define a new
1703 quirk for this. */
1704 },
Jean-Christian de Rivaze7d491a2012-10-10 12:49:02 +00001705 { USB_DEVICE(0x0572, 0x1340), /* Conexant CX93010-2x UCMxx */
1706 .driver_info = NO_UNION_NORMAL,
1707 },
Denis N Ladin036915a2012-12-26 18:29:44 +05001708 { USB_DEVICE(0x05f9, 0x4002), /* PSC Scanning, Magellan 800i */
1709 .driver_info = NO_UNION_NORMAL,
1710 },
Kir Kolyshkin1f17c502009-05-28 20:33:58 +04001711 { USB_DEVICE(0x1bbb, 0x0003), /* Alcatel OT-I650 */
1712 .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */
1713 },
Russ Nelsonc3baa192010-04-21 23:07:03 -04001714 { USB_DEVICE(0x1576, 0x03b1), /* Maretron USB100 */
1715 .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */
1716 },
Oliver Neukum9be84562007-02-12 08:50:03 +01001717
Adrian Taylorc1479a92009-11-19 10:35:33 +00001718 /* Nokia S60 phones expose two ACM channels. The first is
1719 * a modem and is picked up by the standard AT-command
1720 * information below. The second is 'vendor-specific' but
1721 * is treated as a serial device at the S60 end, so we want
1722 * to expose it on Linux too. */
1723 { NOKIA_PCSUITE_ACM_INFO(0x042D), }, /* Nokia 3250 */
1724 { NOKIA_PCSUITE_ACM_INFO(0x04D8), }, /* Nokia 5500 Sport */
1725 { NOKIA_PCSUITE_ACM_INFO(0x04C9), }, /* Nokia E50 */
1726 { NOKIA_PCSUITE_ACM_INFO(0x0419), }, /* Nokia E60 */
1727 { NOKIA_PCSUITE_ACM_INFO(0x044D), }, /* Nokia E61 */
1728 { NOKIA_PCSUITE_ACM_INFO(0x0001), }, /* Nokia E61i */
1729 { NOKIA_PCSUITE_ACM_INFO(0x0475), }, /* Nokia E62 */
1730 { NOKIA_PCSUITE_ACM_INFO(0x0508), }, /* Nokia E65 */
1731 { NOKIA_PCSUITE_ACM_INFO(0x0418), }, /* Nokia E70 */
1732 { NOKIA_PCSUITE_ACM_INFO(0x0425), }, /* Nokia N71 */
1733 { NOKIA_PCSUITE_ACM_INFO(0x0486), }, /* Nokia N73 */
1734 { NOKIA_PCSUITE_ACM_INFO(0x04DF), }, /* Nokia N75 */
1735 { NOKIA_PCSUITE_ACM_INFO(0x000e), }, /* Nokia N77 */
1736 { NOKIA_PCSUITE_ACM_INFO(0x0445), }, /* Nokia N80 */
1737 { NOKIA_PCSUITE_ACM_INFO(0x042F), }, /* Nokia N91 & N91 8GB */
1738 { NOKIA_PCSUITE_ACM_INFO(0x048E), }, /* Nokia N92 */
1739 { NOKIA_PCSUITE_ACM_INFO(0x0420), }, /* Nokia N93 */
1740 { NOKIA_PCSUITE_ACM_INFO(0x04E6), }, /* Nokia N93i */
1741 { NOKIA_PCSUITE_ACM_INFO(0x04B2), }, /* Nokia 5700 XpressMusic */
1742 { NOKIA_PCSUITE_ACM_INFO(0x0134), }, /* Nokia 6110 Navigator (China) */
1743 { NOKIA_PCSUITE_ACM_INFO(0x046E), }, /* Nokia 6110 Navigator */
1744 { NOKIA_PCSUITE_ACM_INFO(0x002f), }, /* Nokia 6120 classic & */
1745 { NOKIA_PCSUITE_ACM_INFO(0x0088), }, /* Nokia 6121 classic */
1746 { NOKIA_PCSUITE_ACM_INFO(0x00fc), }, /* Nokia 6124 classic */
1747 { NOKIA_PCSUITE_ACM_INFO(0x0042), }, /* Nokia E51 */
1748 { NOKIA_PCSUITE_ACM_INFO(0x00b0), }, /* Nokia E66 */
1749 { NOKIA_PCSUITE_ACM_INFO(0x00ab), }, /* Nokia E71 */
1750 { NOKIA_PCSUITE_ACM_INFO(0x0481), }, /* Nokia N76 */
1751 { NOKIA_PCSUITE_ACM_INFO(0x0007), }, /* Nokia N81 & N81 8GB */
1752 { NOKIA_PCSUITE_ACM_INFO(0x0071), }, /* Nokia N82 */
1753 { NOKIA_PCSUITE_ACM_INFO(0x04F0), }, /* Nokia N95 & N95-3 NAM */
1754 { NOKIA_PCSUITE_ACM_INFO(0x0070), }, /* Nokia N95 8GB */
1755 { NOKIA_PCSUITE_ACM_INFO(0x00e9), }, /* Nokia 5320 XpressMusic */
1756 { NOKIA_PCSUITE_ACM_INFO(0x0099), }, /* Nokia 6210 Navigator, RM-367 */
1757 { NOKIA_PCSUITE_ACM_INFO(0x0128), }, /* Nokia 6210 Navigator, RM-419 */
1758 { NOKIA_PCSUITE_ACM_INFO(0x008f), }, /* Nokia 6220 Classic */
1759 { NOKIA_PCSUITE_ACM_INFO(0x00a0), }, /* Nokia 6650 */
1760 { NOKIA_PCSUITE_ACM_INFO(0x007b), }, /* Nokia N78 */
1761 { NOKIA_PCSUITE_ACM_INFO(0x0094), }, /* Nokia N85 */
1762 { NOKIA_PCSUITE_ACM_INFO(0x003a), }, /* Nokia N96 & N96-3 */
1763 { NOKIA_PCSUITE_ACM_INFO(0x00e9), }, /* Nokia 5320 XpressMusic */
1764 { NOKIA_PCSUITE_ACM_INFO(0x0108), }, /* Nokia 5320 XpressMusic 2G */
1765 { NOKIA_PCSUITE_ACM_INFO(0x01f5), }, /* Nokia N97, RM-505 */
Przemo Firszt83a4eae2010-06-28 21:29:34 +01001766 { NOKIA_PCSUITE_ACM_INFO(0x02e3), }, /* Nokia 5230, RM-588 */
Toby Gray4035e452010-09-01 16:01:19 +01001767 { NOKIA_PCSUITE_ACM_INFO(0x0178), }, /* Nokia E63 */
1768 { NOKIA_PCSUITE_ACM_INFO(0x010e), }, /* Nokia E75 */
1769 { NOKIA_PCSUITE_ACM_INFO(0x02d9), }, /* Nokia 6760 Slide */
1770 { NOKIA_PCSUITE_ACM_INFO(0x01d0), }, /* Nokia E52 */
1771 { NOKIA_PCSUITE_ACM_INFO(0x0223), }, /* Nokia E72 */
1772 { NOKIA_PCSUITE_ACM_INFO(0x0275), }, /* Nokia X6 */
1773 { NOKIA_PCSUITE_ACM_INFO(0x026c), }, /* Nokia N97 Mini */
1774 { NOKIA_PCSUITE_ACM_INFO(0x0154), }, /* Nokia 5800 XpressMusic */
1775 { NOKIA_PCSUITE_ACM_INFO(0x04ce), }, /* Nokia E90 */
1776 { NOKIA_PCSUITE_ACM_INFO(0x01d4), }, /* Nokia E55 */
Arvid Ephraim Picciani721d92f2011-01-25 15:58:40 +01001777 { NOKIA_PCSUITE_ACM_INFO(0x0302), }, /* Nokia N8 */
Toby Gray4061fde2011-06-06 14:52:48 +01001778 { NOKIA_PCSUITE_ACM_INFO(0x0335), }, /* Nokia E7 */
1779 { NOKIA_PCSUITE_ACM_INFO(0x03cd), }, /* Nokia C7 */
Toby Gray4035e452010-09-01 16:01:19 +01001780 { SAMSUNG_PCSUITE_ACM_INFO(0x6651), }, /* Samsung GTi8510 (INNOV8) */
Adrian Taylorc1479a92009-11-19 10:35:33 +00001781
Denis Pershin65e52f42011-09-04 17:37:21 +07001782 /* Support for Owen devices */
1783 { USB_DEVICE(0x03eb, 0x0030), }, /* Owen SI30 */
1784
Adrian Taylorc1479a92009-11-19 10:35:33 +00001785 /* NOTE: non-Nokia COMM/ACM/0xff is likely MSFT RNDIS... NOT a modem! */
1786
Julian Calaby7c5d8c32010-01-05 23:57:46 +11001787 /* Support Lego NXT using pbLua firmware */
Julian Calabyce126642010-01-05 23:58:20 +11001788 { USB_DEVICE(0x0694, 0xff00),
1789 .driver_info = NOT_A_MODEM,
Otavio Salvador7893afc2010-09-26 23:35:05 -03001790 },
Julian Calaby7c5d8c32010-01-05 23:57:46 +11001791
Erik Slagterfd5054c2011-05-11 12:06:55 +02001792 /* Support for Droids MuIn LCD */
1793 { USB_DEVICE(0x04d8, 0x000b),
1794 .driver_info = NO_DATA_INTERFACE,
1795 },
1796
Dmitry Torokhov16142652013-02-02 11:02:14 -08001797#if IS_ENABLED(CONFIG_INPUT_IMS_PCU)
1798 { USB_DEVICE(0x04d8, 0x0082), /* Application mode */
1799 .driver_info = IGNORE_DEVICE,
1800 },
1801 { USB_DEVICE(0x04d8, 0x0083), /* Bootloader mode */
1802 .driver_info = IGNORE_DEVICE,
1803 },
1804#endif
1805
Philippe Corbes5b239f02010-08-31 19:31:32 +02001806 /* control interfaces without any protocol set */
1807 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1808 USB_CDC_PROTO_NONE) },
1809
Linus Torvalds1da177e2005-04-16 15:20:36 -07001810 /* control interfaces with various AT-command sets */
1811 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1812 USB_CDC_ACM_PROTO_AT_V25TER) },
1813 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1814 USB_CDC_ACM_PROTO_AT_PCCA101) },
1815 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1816 USB_CDC_ACM_PROTO_AT_PCCA101_WAKE) },
1817 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1818 USB_CDC_ACM_PROTO_AT_GSM) },
1819 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
Alan Cox6e47e062009-06-11 12:37:06 +01001820 USB_CDC_ACM_PROTO_AT_3G) },
Linus Torvalds1da177e2005-04-16 15:20:36 -07001821 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1822 USB_CDC_ACM_PROTO_AT_CDMA) },
1823
Linus Torvalds1da177e2005-04-16 15:20:36 -07001824 { }
1825};
1826
Alan Cox6e47e062009-06-11 12:37:06 +01001827MODULE_DEVICE_TABLE(usb, acm_ids);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001828
1829static struct usb_driver acm_driver = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001830 .name = "cdc_acm",
1831 .probe = acm_probe,
1832 .disconnect = acm_disconnect,
Oliver Neukum35758582008-07-01 19:10:08 +02001833#ifdef CONFIG_PM
Oliver Neukum1365baf2007-10-12 17:24:28 +02001834 .suspend = acm_suspend,
1835 .resume = acm_resume,
Francesco Lavraa91b0c52009-12-08 09:54:11 +01001836 .reset_resume = acm_reset_resume,
Oliver Neukum35758582008-07-01 19:10:08 +02001837#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001838 .id_table = acm_ids,
Oliver Neukum35758582008-07-01 19:10:08 +02001839#ifdef CONFIG_PM
Oliver Neukum1365baf2007-10-12 17:24:28 +02001840 .supports_autosuspend = 1,
Oliver Neukum35758582008-07-01 19:10:08 +02001841#endif
Sarah Sharpe1f12eb2012-04-23 10:08:51 -07001842 .disable_hub_initiated_lpm = 1,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001843};
1844
1845/*
1846 * TTY driver structures.
1847 */
1848
Jeff Dikeb68e31d2006-10-02 02:17:18 -07001849static const struct tty_operations acm_ops = {
Havard Skinnemoen7fb57a02011-11-30 13:28:14 -08001850 .install = acm_tty_install,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001851 .open = acm_tty_open,
1852 .close = acm_tty_close,
Havard Skinnemoen7fb57a02011-11-30 13:28:14 -08001853 .cleanup = acm_tty_cleanup,
Alan Cox10077d42009-06-11 12:36:09 +01001854 .hangup = acm_tty_hangup,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001855 .write = acm_tty_write,
1856 .write_room = acm_tty_write_room,
1857 .ioctl = acm_tty_ioctl,
1858 .throttle = acm_tty_throttle,
1859 .unthrottle = acm_tty_unthrottle,
1860 .chars_in_buffer = acm_tty_chars_in_buffer,
1861 .break_ctl = acm_tty_break_ctl,
1862 .set_termios = acm_tty_set_termios,
1863 .tiocmget = acm_tty_tiocmget,
1864 .tiocmset = acm_tty_tiocmset,
1865};
1866
1867/*
1868 * Init / exit.
1869 */
1870
1871static int __init acm_init(void)
1872{
1873 int retval;
1874 acm_tty_driver = alloc_tty_driver(ACM_TTY_MINORS);
1875 if (!acm_tty_driver)
1876 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001877 acm_tty_driver->driver_name = "acm",
1878 acm_tty_driver->name = "ttyACM",
Linus Torvalds1da177e2005-04-16 15:20:36 -07001879 acm_tty_driver->major = ACM_TTY_MAJOR,
1880 acm_tty_driver->minor_start = 0,
1881 acm_tty_driver->type = TTY_DRIVER_TYPE_SERIAL,
1882 acm_tty_driver->subtype = SERIAL_TYPE_NORMAL,
Greg Kroah-Hartman331b8312005-06-20 21:15:16 -07001883 acm_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001884 acm_tty_driver->init_termios = tty_std_termios;
Alan Cox6e47e062009-06-11 12:37:06 +01001885 acm_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD |
1886 HUPCL | CLOCAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001887 tty_set_operations(acm_tty_driver, &acm_ops);
1888
1889 retval = tty_register_driver(acm_tty_driver);
1890 if (retval) {
1891 put_tty_driver(acm_tty_driver);
1892 return retval;
1893 }
1894
1895 retval = usb_register(&acm_driver);
1896 if (retval) {
1897 tty_unregister_driver(acm_tty_driver);
1898 put_tty_driver(acm_tty_driver);
1899 return retval;
1900 }
1901
Johan Hovolda2c7b932011-03-22 11:12:18 +01001902 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001903
1904 return 0;
1905}
1906
1907static void __exit acm_exit(void)
1908{
1909 usb_deregister(&acm_driver);
1910 tty_unregister_driver(acm_tty_driver);
1911 put_tty_driver(acm_tty_driver);
1912}
1913
1914module_init(acm_init);
1915module_exit(acm_exit);
1916
Alan Cox6e47e062009-06-11 12:37:06 +01001917MODULE_AUTHOR(DRIVER_AUTHOR);
1918MODULE_DESCRIPTION(DRIVER_DESC);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001919MODULE_LICENSE("GPL");
Scott James Remnante766aeb2009-04-06 17:33:18 +01001920MODULE_ALIAS_CHARDEV_MAJOR(ACM_TTY_MAJOR);