Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * cdc-acm.c | |
3 | * | |
4 | * Copyright (c) 1999 Armin Fuerst <fuerst@in.tum.de> | |
a2531293 | 5 | * Copyright (c) 1999 Pavel Machek <pavel@ucw.cz> |
1da177e4 LT |
6 | * 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> | |
61a87adf | 9 | * Copyright (c) 2005 David Kubicek <dave@awk.cz> |
088c64f8 | 10 | * Copyright (c) 2011 Johan Hovold <jhovold@gmail.com> |
1da177e4 LT |
11 | * |
12 | * USB Abstract Control Model driver for USB modems and ISDN adapters | |
13 | * | |
14 | * Sponsored by SuSE | |
15 | * | |
1da177e4 LT |
16 | * 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 | |
e5fbab51 | 32 | #undef VERBOSE_DEBUG |
1da177e4 LT |
33 | |
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> | |
7af25b4b | 39 | #include <linux/serial.h> |
1da177e4 LT |
40 | #include <linux/tty_driver.h> |
41 | #include <linux/tty_flip.h> | |
18c75720 | 42 | #include <linux/serial.h> |
1da177e4 | 43 | #include <linux/module.h> |
4186ecf8 | 44 | #include <linux/mutex.h> |
10077d4a | 45 | #include <linux/uaccess.h> |
1da177e4 | 46 | #include <linux/usb.h> |
a8c28f23 | 47 | #include <linux/usb/cdc.h> |
1da177e4 LT |
48 | #include <asm/byteorder.h> |
49 | #include <asm/unaligned.h> | |
61a87adf | 50 | #include <linux/list.h> |
1da177e4 LT |
51 | |
52 | #include "cdc-acm.h" | |
53 | ||
e5fbab51 | 54 | |
088c64f8 | 55 | #define DRIVER_AUTHOR "Armin Fuerst, Pavel Machek, Johannes Erdfelt, Vojtech Pavlik, David Kubicek, Johan Hovold" |
1da177e4 LT |
56 | #define DRIVER_DESC "USB Abstract Control Model driver for USB modems and ISDN adapters" |
57 | ||
58 | static struct usb_driver acm_driver; | |
59 | static struct tty_driver *acm_tty_driver; | |
60 | static struct acm *acm_table[ACM_TTY_MINORS]; | |
61 | ||
7fb57a01 | 62 | static DEFINE_MUTEX(acm_table_lock); |
1da177e4 | 63 | |
7fb57a01 HS |
64 | /* |
65 | * acm_table accessors | |
66 | */ | |
1da177e4 | 67 | |
7fb57a01 HS |
68 | /* |
69 | * Look up an ACM structure by index. If found and not disconnected, increment | |
70 | * its refcount and return it with its mutex held. | |
71 | */ | |
72 | static struct acm *acm_get_by_index(unsigned index) | |
73 | { | |
74 | struct acm *acm; | |
75 | ||
76 | mutex_lock(&acm_table_lock); | |
77 | acm = acm_table[index]; | |
78 | if (acm) { | |
79 | mutex_lock(&acm->mutex); | |
80 | if (acm->disconnected) { | |
81 | mutex_unlock(&acm->mutex); | |
82 | acm = NULL; | |
83 | } else { | |
84 | tty_port_get(&acm->port); | |
85 | mutex_unlock(&acm->mutex); | |
86 | } | |
87 | } | |
88 | mutex_unlock(&acm_table_lock); | |
89 | return acm; | |
90 | } | |
91 | ||
92 | /* | |
93 | * Try to find an available minor number and if found, associate it with 'acm'. | |
94 | */ | |
95 | static int acm_alloc_minor(struct acm *acm) | |
96 | { | |
97 | int minor; | |
98 | ||
99 | mutex_lock(&acm_table_lock); | |
100 | for (minor = 0; minor < ACM_TTY_MINORS; minor++) { | |
101 | if (!acm_table[minor]) { | |
102 | acm_table[minor] = acm; | |
103 | break; | |
104 | } | |
105 | } | |
106 | mutex_unlock(&acm_table_lock); | |
107 | ||
108 | return minor; | |
109 | } | |
110 | ||
111 | /* Release the minor number associated with 'acm'. */ | |
112 | static void acm_release_minor(struct acm *acm) | |
113 | { | |
114 | mutex_lock(&acm_table_lock); | |
115 | acm_table[acm->minor] = NULL; | |
116 | mutex_unlock(&acm_table_lock); | |
117 | } | |
739e0285 | 118 | |
1da177e4 LT |
119 | /* |
120 | * Functions for ACM control messages. | |
121 | */ | |
122 | ||
6e47e069 AC |
123 | static int acm_ctrl_msg(struct acm *acm, int request, int value, |
124 | void *buf, int len) | |
1da177e4 LT |
125 | { |
126 | int retval = usb_control_msg(acm->dev, usb_sndctrlpipe(acm->dev, 0), | |
127 | request, USB_RT_ACM, value, | |
128 | acm->control->altsetting[0].desc.bInterfaceNumber, | |
129 | buf, len, 5000); | |
a5cc7ef9 JH |
130 | dev_dbg(&acm->control->dev, |
131 | "%s - rq 0x%02x, val %#x, len %#x, result %d\n", | |
132 | __func__, request, value, len, retval); | |
1da177e4 LT |
133 | return retval < 0 ? retval : 0; |
134 | } | |
135 | ||
136 | /* devices aren't required to support these requests. | |
137 | * the cdc acm descriptor tells whether they do... | |
138 | */ | |
139 | #define acm_set_control(acm, control) \ | |
140 | acm_ctrl_msg(acm, USB_CDC_REQ_SET_CONTROL_LINE_STATE, control, NULL, 0) | |
141 | #define acm_set_line(acm, line) \ | |
142 | acm_ctrl_msg(acm, USB_CDC_REQ_SET_LINE_CODING, 0, line, sizeof *(line)) | |
143 | #define acm_send_break(acm, ms) \ | |
144 | acm_ctrl_msg(acm, USB_CDC_REQ_SEND_BREAK, ms, NULL, 0) | |
145 | ||
884b600f ON |
146 | /* |
147 | * Write buffer management. | |
148 | * All of these assume proper locks taken by the caller. | |
149 | */ | |
150 | ||
151 | static int acm_wb_alloc(struct acm *acm) | |
152 | { | |
153 | int i, wbn; | |
154 | struct acm_wb *wb; | |
155 | ||
e4cf3aa8 | 156 | wbn = 0; |
884b600f ON |
157 | i = 0; |
158 | for (;;) { | |
159 | wb = &acm->wb[wbn]; | |
160 | if (!wb->use) { | |
161 | wb->use = 1; | |
162 | return wbn; | |
163 | } | |
86478944 ON |
164 | wbn = (wbn + 1) % ACM_NW; |
165 | if (++i >= ACM_NW) | |
884b600f ON |
166 | return -1; |
167 | } | |
168 | } | |
169 | ||
884b600f ON |
170 | static int acm_wb_is_avail(struct acm *acm) |
171 | { | |
172 | int i, n; | |
e5fbab51 | 173 | unsigned long flags; |
884b600f | 174 | |
86478944 | 175 | n = ACM_NW; |
e5fbab51 | 176 | spin_lock_irqsave(&acm->write_lock, flags); |
6e47e069 | 177 | for (i = 0; i < ACM_NW; i++) |
86478944 | 178 | n -= acm->wb[i].use; |
e5fbab51 | 179 | spin_unlock_irqrestore(&acm->write_lock, flags); |
884b600f ON |
180 | return n; |
181 | } | |
182 | ||
884b600f | 183 | /* |
ad0b65ef | 184 | * Finish write. Caller must hold acm->write_lock |
884b600f | 185 | */ |
e4cf3aa8 | 186 | static void acm_write_done(struct acm *acm, struct acm_wb *wb) |
884b600f | 187 | { |
e4cf3aa8 | 188 | wb->use = 0; |
11ea859d | 189 | acm->transmitting--; |
97d35f95 | 190 | usb_autopm_put_interface_async(acm->control); |
884b600f ON |
191 | } |
192 | ||
193 | /* | |
194 | * Poke write. | |
11ea859d ON |
195 | * |
196 | * the caller is responsible for locking | |
884b600f | 197 | */ |
11ea859d ON |
198 | |
199 | static int acm_start_wb(struct acm *acm, struct acm_wb *wb) | |
200 | { | |
201 | int rc; | |
202 | ||
203 | acm->transmitting++; | |
204 | ||
205 | wb->urb->transfer_buffer = wb->buf; | |
206 | wb->urb->transfer_dma = wb->dmah; | |
207 | wb->urb->transfer_buffer_length = wb->len; | |
208 | wb->urb->dev = acm->dev; | |
209 | ||
6e47e069 AC |
210 | rc = usb_submit_urb(wb->urb, GFP_ATOMIC); |
211 | if (rc < 0) { | |
a5cc7ef9 JH |
212 | dev_err(&acm->data->dev, |
213 | "%s - usb_submit_urb(write bulk) failed: %d\n", | |
214 | __func__, rc); | |
11ea859d ON |
215 | acm_write_done(acm, wb); |
216 | } | |
217 | return rc; | |
218 | } | |
219 | ||
e4cf3aa8 | 220 | static int acm_write_start(struct acm *acm, int wbn) |
884b600f ON |
221 | { |
222 | unsigned long flags; | |
934da463 | 223 | struct acm_wb *wb = &acm->wb[wbn]; |
884b600f ON |
224 | int rc; |
225 | ||
226 | spin_lock_irqsave(&acm->write_lock, flags); | |
227 | if (!acm->dev) { | |
934da463 | 228 | wb->use = 0; |
884b600f ON |
229 | spin_unlock_irqrestore(&acm->write_lock, flags); |
230 | return -ENODEV; | |
231 | } | |
232 | ||
5e9e75f8 | 233 | dev_vdbg(&acm->data->dev, "%s - susp_count %d\n", __func__, |
a5cc7ef9 | 234 | acm->susp_count); |
97d35f95 | 235 | usb_autopm_get_interface_async(acm->control); |
11ea859d | 236 | if (acm->susp_count) { |
97d35f95 ON |
237 | if (!acm->delayed_wb) |
238 | acm->delayed_wb = wb; | |
239 | else | |
240 | usb_autopm_put_interface_async(acm->control); | |
11ea859d ON |
241 | spin_unlock_irqrestore(&acm->write_lock, flags); |
242 | return 0; /* A white lie */ | |
243 | } | |
244 | usb_mark_last_busy(acm->dev); | |
245 | ||
11ea859d | 246 | rc = acm_start_wb(acm, wb); |
884b600f ON |
247 | spin_unlock_irqrestore(&acm->write_lock, flags); |
248 | ||
884b600f | 249 | return rc; |
11ea859d | 250 | |
884b600f | 251 | } |
c4cabd28 ON |
252 | /* |
253 | * attributes exported through sysfs | |
254 | */ | |
255 | static ssize_t show_caps | |
256 | (struct device *dev, struct device_attribute *attr, char *buf) | |
257 | { | |
258 | struct usb_interface *intf = to_usb_interface(dev); | |
259 | struct acm *acm = usb_get_intfdata(intf); | |
260 | ||
261 | return sprintf(buf, "%d", acm->ctrl_caps); | |
262 | } | |
263 | static DEVICE_ATTR(bmCapabilities, S_IRUGO, show_caps, NULL); | |
264 | ||
265 | static ssize_t show_country_codes | |
266 | (struct device *dev, struct device_attribute *attr, char *buf) | |
267 | { | |
268 | struct usb_interface *intf = to_usb_interface(dev); | |
269 | struct acm *acm = usb_get_intfdata(intf); | |
270 | ||
271 | memcpy(buf, acm->country_codes, acm->country_code_size); | |
272 | return acm->country_code_size; | |
273 | } | |
274 | ||
275 | static DEVICE_ATTR(wCountryCodes, S_IRUGO, show_country_codes, NULL); | |
276 | ||
277 | static ssize_t show_country_rel_date | |
278 | (struct device *dev, struct device_attribute *attr, char *buf) | |
279 | { | |
280 | struct usb_interface *intf = to_usb_interface(dev); | |
281 | struct acm *acm = usb_get_intfdata(intf); | |
282 | ||
283 | return sprintf(buf, "%d", acm->country_rel_date); | |
284 | } | |
884b600f | 285 | |
c4cabd28 | 286 | static DEVICE_ATTR(iCountryCodeRelDate, S_IRUGO, show_country_rel_date, NULL); |
1da177e4 LT |
287 | /* |
288 | * Interrupt handlers for various ACM device responses | |
289 | */ | |
290 | ||
291 | /* control interface reports status changes with "interrupt" transfers */ | |
7d12e780 | 292 | static void acm_ctrl_irq(struct urb *urb) |
1da177e4 LT |
293 | { |
294 | struct acm *acm = urb->context; | |
295 | struct usb_cdc_notification *dr = urb->transfer_buffer; | |
10077d4a | 296 | struct tty_struct *tty; |
1da177e4 LT |
297 | unsigned char *data; |
298 | int newctrl; | |
185d4058 GKH |
299 | int retval; |
300 | int status = urb->status; | |
1da177e4 | 301 | |
185d4058 | 302 | switch (status) { |
1da177e4 LT |
303 | case 0: |
304 | /* success */ | |
305 | break; | |
306 | case -ECONNRESET: | |
307 | case -ENOENT: | |
308 | case -ESHUTDOWN: | |
309 | /* this urb is terminated, clean up */ | |
a5cc7ef9 JH |
310 | dev_dbg(&acm->control->dev, |
311 | "%s - urb shutting down with status: %d\n", | |
312 | __func__, status); | |
1da177e4 LT |
313 | return; |
314 | default: | |
a5cc7ef9 JH |
315 | dev_dbg(&acm->control->dev, |
316 | "%s - nonzero urb status received: %d\n", | |
317 | __func__, status); | |
1da177e4 LT |
318 | goto exit; |
319 | } | |
320 | ||
7e7797e7 JH |
321 | usb_mark_last_busy(acm->dev); |
322 | ||
1da177e4 LT |
323 | data = (unsigned char *)(dr + 1); |
324 | switch (dr->bNotificationType) { | |
6e47e069 | 325 | case USB_CDC_NOTIFY_NETWORK_CONNECTION: |
a5cc7ef9 JH |
326 | dev_dbg(&acm->control->dev, "%s - network connection: %d\n", |
327 | __func__, dr->wValue); | |
6e47e069 | 328 | break; |
1da177e4 | 329 | |
6e47e069 AC |
330 | case USB_CDC_NOTIFY_SERIAL_STATE: |
331 | tty = tty_port_tty_get(&acm->port); | |
332 | newctrl = get_unaligned_le16(data); | |
1da177e4 | 333 | |
6e47e069 AC |
334 | if (tty) { |
335 | if (!acm->clocal && | |
336 | (acm->ctrlin & ~newctrl & ACM_CTRL_DCD)) { | |
a5cc7ef9 JH |
337 | dev_dbg(&acm->control->dev, |
338 | "%s - calling hangup\n", __func__); | |
6e47e069 | 339 | tty_hangup(tty); |
1da177e4 | 340 | } |
6e47e069 AC |
341 | tty_kref_put(tty); |
342 | } | |
1da177e4 | 343 | |
6e47e069 | 344 | acm->ctrlin = newctrl; |
1da177e4 | 345 | |
a5cc7ef9 JH |
346 | dev_dbg(&acm->control->dev, |
347 | "%s - input control lines: dcd%c dsr%c break%c " | |
348 | "ring%c framing%c parity%c overrun%c\n", | |
349 | __func__, | |
6e47e069 AC |
350 | acm->ctrlin & ACM_CTRL_DCD ? '+' : '-', |
351 | acm->ctrlin & ACM_CTRL_DSR ? '+' : '-', | |
352 | acm->ctrlin & ACM_CTRL_BRK ? '+' : '-', | |
353 | acm->ctrlin & ACM_CTRL_RI ? '+' : '-', | |
354 | acm->ctrlin & ACM_CTRL_FRAMING ? '+' : '-', | |
355 | acm->ctrlin & ACM_CTRL_PARITY ? '+' : '-', | |
356 | acm->ctrlin & ACM_CTRL_OVERRUN ? '+' : '-'); | |
1da177e4 LT |
357 | break; |
358 | ||
6e47e069 | 359 | default: |
a5cc7ef9 JH |
360 | dev_dbg(&acm->control->dev, |
361 | "%s - unknown notification %d received: index %d " | |
362 | "len %d data0 %d data1 %d\n", | |
363 | __func__, | |
6e47e069 AC |
364 | dr->bNotificationType, dr->wIndex, |
365 | dr->wLength, data[0], data[1]); | |
366 | break; | |
1da177e4 LT |
367 | } |
368 | exit: | |
6e47e069 | 369 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
185d4058 | 370 | if (retval) |
1d9846e5 JH |
371 | dev_err(&acm->control->dev, "%s - usb_submit_urb failed: %d\n", |
372 | __func__, retval); | |
1da177e4 LT |
373 | } |
374 | ||
088c64f8 | 375 | static int acm_submit_read_urb(struct acm *acm, int index, gfp_t mem_flags) |
1da177e4 | 376 | { |
088c64f8 | 377 | int res; |
185d4058 | 378 | |
088c64f8 JH |
379 | if (!test_and_clear_bit(index, &acm->read_urbs_free)) |
380 | return 0; | |
1da177e4 | 381 | |
088c64f8 JH |
382 | dev_vdbg(&acm->data->dev, "%s - urb %d\n", __func__, index); |
383 | ||
384 | res = usb_submit_urb(acm->read_urbs[index], mem_flags); | |
385 | if (res) { | |
386 | if (res != -EPERM) { | |
387 | dev_err(&acm->data->dev, | |
388 | "%s - usb_submit_urb failed: %d\n", | |
389 | __func__, res); | |
390 | } | |
391 | set_bit(index, &acm->read_urbs_free); | |
392 | return res; | |
11ea859d | 393 | } |
1da177e4 | 394 | |
088c64f8 JH |
395 | return 0; |
396 | } | |
1da177e4 | 397 | |
088c64f8 JH |
398 | static int acm_submit_read_urbs(struct acm *acm, gfp_t mem_flags) |
399 | { | |
400 | int res; | |
401 | int i; | |
61a87adf | 402 | |
088c64f8 JH |
403 | for (i = 0; i < acm->rx_buflimit; ++i) { |
404 | res = acm_submit_read_urb(acm, i, mem_flags); | |
405 | if (res) | |
406 | return res; | |
86478944 | 407 | } |
088c64f8 JH |
408 | |
409 | return 0; | |
1da177e4 LT |
410 | } |
411 | ||
088c64f8 | 412 | static void acm_process_read_urb(struct acm *acm, struct urb *urb) |
1da177e4 | 413 | { |
10077d4a | 414 | struct tty_struct *tty; |
1da177e4 | 415 | |
088c64f8 | 416 | if (!urb->actual_length) |
ca79b7b4 | 417 | return; |
61a87adf | 418 | |
10077d4a | 419 | tty = tty_port_tty_get(&acm->port); |
088c64f8 JH |
420 | if (!tty) |
421 | return; | |
10077d4a | 422 | |
088c64f8 JH |
423 | tty_insert_flip_string(tty, urb->transfer_buffer, urb->actual_length); |
424 | tty_flip_buffer_push(tty); | |
61a87adf | 425 | |
10077d4a | 426 | tty_kref_put(tty); |
088c64f8 | 427 | } |
10077d4a | 428 | |
088c64f8 JH |
429 | static void acm_read_bulk_callback(struct urb *urb) |
430 | { | |
431 | struct acm_rb *rb = urb->context; | |
432 | struct acm *acm = rb->instance; | |
433 | unsigned long flags; | |
61a87adf | 434 | |
088c64f8 JH |
435 | dev_vdbg(&acm->data->dev, "%s - urb %d, len %d\n", __func__, |
436 | rb->index, urb->actual_length); | |
437 | set_bit(rb->index, &acm->read_urbs_free); | |
61a87adf | 438 | |
088c64f8 JH |
439 | if (!acm->dev) { |
440 | dev_dbg(&acm->data->dev, "%s - disconnected\n", __func__); | |
441 | return; | |
442 | } | |
443 | usb_mark_last_busy(acm->dev); | |
61a87adf | 444 | |
088c64f8 JH |
445 | if (urb->status) { |
446 | dev_dbg(&acm->data->dev, "%s - non-zero urb status: %d\n", | |
447 | __func__, urb->status); | |
448 | return; | |
61a87adf | 449 | } |
088c64f8 JH |
450 | acm_process_read_urb(acm, urb); |
451 | ||
452 | /* throttle device if requested by tty */ | |
11ea859d | 453 | spin_lock_irqsave(&acm->read_lock, flags); |
088c64f8 JH |
454 | acm->throttled = acm->throttle_req; |
455 | if (!acm->throttled && !acm->susp_count) { | |
456 | spin_unlock_irqrestore(&acm->read_lock, flags); | |
457 | acm_submit_read_urb(acm, rb->index, GFP_ATOMIC); | |
458 | } else { | |
459 | spin_unlock_irqrestore(&acm->read_lock, flags); | |
460 | } | |
1da177e4 LT |
461 | } |
462 | ||
463 | /* data interface wrote those outgoing bytes */ | |
7d12e780 | 464 | static void acm_write_bulk(struct urb *urb) |
1da177e4 | 465 | { |
cdc97792 | 466 | struct acm_wb *wb = urb->context; |
e5fbab51 | 467 | struct acm *acm = wb->instance; |
ad0b65ef | 468 | unsigned long flags; |
1da177e4 | 469 | |
4fa4626c JH |
470 | if (urb->status || (urb->actual_length != urb->transfer_buffer_length)) |
471 | dev_vdbg(&acm->data->dev, "%s - len %d/%d, status %d\n", | |
1d9846e5 | 472 | __func__, |
e5fbab51 DB |
473 | urb->actual_length, |
474 | urb->transfer_buffer_length, | |
475 | urb->status); | |
1da177e4 | 476 | |
ad0b65ef | 477 | spin_lock_irqsave(&acm->write_lock, flags); |
e4cf3aa8 | 478 | acm_write_done(acm, wb); |
ad0b65ef | 479 | spin_unlock_irqrestore(&acm->write_lock, flags); |
99823f45 | 480 | schedule_work(&acm->work); |
1da177e4 LT |
481 | } |
482 | ||
c4028958 | 483 | static void acm_softint(struct work_struct *work) |
1da177e4 | 484 | { |
c4028958 | 485 | struct acm *acm = container_of(work, struct acm, work); |
10077d4a | 486 | struct tty_struct *tty; |
e5fbab51 | 487 | |
1d9846e5 JH |
488 | dev_vdbg(&acm->data->dev, "%s\n", __func__); |
489 | ||
10077d4a | 490 | tty = tty_port_tty_get(&acm->port); |
15e5bee3 JH |
491 | if (!tty) |
492 | return; | |
10077d4a AC |
493 | tty_wakeup(tty); |
494 | tty_kref_put(tty); | |
1da177e4 LT |
495 | } |
496 | ||
497 | /* | |
498 | * TTY handlers | |
499 | */ | |
500 | ||
7fb57a01 | 501 | static int acm_tty_install(struct tty_driver *driver, struct tty_struct *tty) |
1da177e4 LT |
502 | { |
503 | struct acm *acm; | |
7fb57a01 | 504 | int retval; |
1da177e4 | 505 | |
7fb57a01 | 506 | dev_dbg(tty->dev, "%s\n", __func__); |
1da177e4 | 507 | |
7fb57a01 HS |
508 | acm = acm_get_by_index(tty->index); |
509 | if (!acm) | |
510 | return -ENODEV; | |
a5cc7ef9 | 511 | |
f8a8c10f | 512 | retval = tty_standard_install(driver, tty); |
7fb57a01 HS |
513 | if (retval) |
514 | goto error_init_termios; | |
10077d4a | 515 | |
1da177e4 | 516 | tty->driver_data = acm; |
1da177e4 | 517 | |
7fb57a01 HS |
518 | return 0; |
519 | ||
520 | error_init_termios: | |
521 | tty_port_put(&acm->port); | |
522 | return retval; | |
523 | } | |
524 | ||
525 | static int acm_tty_open(struct tty_struct *tty, struct file *filp) | |
526 | { | |
527 | struct acm *acm = tty->driver_data; | |
528 | ||
529 | dev_dbg(tty->dev, "%s\n", __func__); | |
530 | ||
531 | return tty_port_open(&acm->port, tty, filp); | |
532 | } | |
533 | ||
534 | static int acm_port_activate(struct tty_port *port, struct tty_struct *tty) | |
535 | { | |
536 | struct acm *acm = container_of(port, struct acm, port); | |
537 | int retval = -ENODEV; | |
538 | ||
539 | dev_dbg(&acm->control->dev, "%s\n", __func__); | |
1365baf7 ON |
540 | |
541 | mutex_lock(&acm->mutex); | |
7fb57a01 HS |
542 | if (acm->disconnected) |
543 | goto disconnected; | |
544 | ||
545 | retval = usb_autopm_get_interface(acm->control); | |
546 | if (retval) | |
547 | goto error_get_interface; | |
548 | ||
549 | /* | |
550 | * FIXME: Why do we need this? Allocating 64K of physically contiguous | |
551 | * memory is really nasty... | |
552 | */ | |
553 | set_bit(TTY_NO_WRITE_SPLIT, &tty->flags); | |
554 | acm->control->needs_remote_wakeup = 1; | |
1365baf7 | 555 | |
1da177e4 LT |
556 | acm->ctrlurb->dev = acm->dev; |
557 | if (usb_submit_urb(acm->ctrlurb, GFP_KERNEL)) { | |
a5cc7ef9 JH |
558 | dev_err(&acm->control->dev, |
559 | "%s - usb_submit_urb(ctrl irq) failed\n", __func__); | |
7fb57a01 | 560 | goto error_submit_urb; |
1da177e4 LT |
561 | } |
562 | ||
7fb57a01 HS |
563 | acm->ctrlout = ACM_CTRL_DTR | ACM_CTRL_RTS; |
564 | if (acm_set_control(acm, acm->ctrlout) < 0 && | |
ca79b7b4 | 565 | (acm->ctrl_caps & USB_CDC_CAP_LINE)) |
7fb57a01 | 566 | goto error_set_control; |
10077d4a | 567 | |
11ea859d | 568 | usb_autopm_put_interface(acm->control); |
1da177e4 | 569 | |
088c64f8 | 570 | if (acm_submit_read_urbs(acm, GFP_KERNEL)) |
7fb57a01 | 571 | goto error_submit_read_urbs; |
2b626dc1 | 572 | |
1365baf7 | 573 | mutex_unlock(&acm->mutex); |
1da177e4 | 574 | |
7fb57a01 HS |
575 | return 0; |
576 | ||
577 | error_submit_read_urbs: | |
578 | acm->ctrlout = 0; | |
579 | acm_set_control(acm, acm->ctrlout); | |
580 | error_set_control: | |
581 | usb_kill_urb(acm->ctrlurb); | |
582 | error_submit_urb: | |
2b626dc1 | 583 | usb_autopm_put_interface(acm->control); |
7fb57a01 HS |
584 | error_get_interface: |
585 | disconnected: | |
586 | mutex_unlock(&acm->mutex); | |
587 | return retval; | |
1da177e4 LT |
588 | } |
589 | ||
7fb57a01 | 590 | static void acm_port_destruct(struct tty_port *port) |
83ef344a | 591 | { |
7fb57a01 HS |
592 | struct acm *acm = container_of(port, struct acm, port); |
593 | ||
594 | dev_dbg(&acm->control->dev, "%s\n", __func__); | |
61a87adf | 595 | |
83ef344a | 596 | tty_unregister_device(acm_tty_driver, acm->minor); |
7fb57a01 | 597 | acm_release_minor(acm); |
83ef344a | 598 | usb_put_intf(acm->control); |
c4cabd28 | 599 | kfree(acm->country_codes); |
83ef344a | 600 | kfree(acm); |
601 | } | |
602 | ||
7fb57a01 | 603 | static void acm_port_shutdown(struct tty_port *port) |
10077d4a | 604 | { |
7fb57a01 | 605 | struct acm *acm = container_of(port, struct acm, port); |
dab54c9f JH |
606 | int i; |
607 | ||
7fb57a01 HS |
608 | dev_dbg(&acm->control->dev, "%s\n", __func__); |
609 | ||
610 | mutex_lock(&acm->mutex); | |
611 | if (!acm->disconnected) { | |
10077d4a AC |
612 | usb_autopm_get_interface(acm->control); |
613 | acm_set_control(acm, acm->ctrlout = 0); | |
10077d4a AC |
614 | usb_kill_urb(acm->ctrlurb); |
615 | for (i = 0; i < ACM_NW; i++) | |
616 | usb_kill_urb(acm->wb[i].urb); | |
dab54c9f | 617 | for (i = 0; i < acm->rx_buflimit; i++) |
088c64f8 | 618 | usb_kill_urb(acm->read_urbs[i]); |
10077d4a AC |
619 | acm->control->needs_remote_wakeup = 0; |
620 | usb_autopm_put_interface(acm->control); | |
621 | } | |
7fb57a01 HS |
622 | mutex_unlock(&acm->mutex); |
623 | } | |
624 | ||
625 | static void acm_tty_cleanup(struct tty_struct *tty) | |
626 | { | |
627 | struct acm *acm = tty->driver_data; | |
628 | dev_dbg(&acm->control->dev, "%s\n", __func__); | |
629 | tty_port_put(&acm->port); | |
10077d4a AC |
630 | } |
631 | ||
632 | static void acm_tty_hangup(struct tty_struct *tty) | |
633 | { | |
634 | struct acm *acm = tty->driver_data; | |
7fb57a01 | 635 | dev_dbg(&acm->control->dev, "%s\n", __func__); |
10077d4a | 636 | tty_port_hangup(&acm->port); |
10077d4a AC |
637 | } |
638 | ||
1da177e4 LT |
639 | static void acm_tty_close(struct tty_struct *tty, struct file *filp) |
640 | { | |
641 | struct acm *acm = tty->driver_data; | |
7fb57a01 HS |
642 | dev_dbg(&acm->control->dev, "%s\n", __func__); |
643 | tty_port_close(&acm->port, tty, filp); | |
1da177e4 LT |
644 | } |
645 | ||
6e47e069 AC |
646 | static int acm_tty_write(struct tty_struct *tty, |
647 | const unsigned char *buf, int count) | |
1da177e4 LT |
648 | { |
649 | struct acm *acm = tty->driver_data; | |
650 | int stat; | |
884b600f ON |
651 | unsigned long flags; |
652 | int wbn; | |
653 | struct acm_wb *wb; | |
654 | ||
1da177e4 LT |
655 | if (!count) |
656 | return 0; | |
657 | ||
5e9e75f8 | 658 | dev_vdbg(&acm->data->dev, "%s - count %d\n", __func__, count); |
a5cc7ef9 | 659 | |
884b600f | 660 | spin_lock_irqsave(&acm->write_lock, flags); |
6e47e069 AC |
661 | wbn = acm_wb_alloc(acm); |
662 | if (wbn < 0) { | |
884b600f | 663 | spin_unlock_irqrestore(&acm->write_lock, flags); |
884b600f ON |
664 | return 0; |
665 | } | |
666 | wb = &acm->wb[wbn]; | |
1da177e4 | 667 | |
884b600f | 668 | count = (count > acm->writesize) ? acm->writesize : count; |
5e9e75f8 | 669 | dev_vdbg(&acm->data->dev, "%s - write %d\n", __func__, count); |
884b600f ON |
670 | memcpy(wb->buf, buf, count); |
671 | wb->len = count; | |
672 | spin_unlock_irqrestore(&acm->write_lock, flags); | |
1da177e4 | 673 | |
6e47e069 AC |
674 | stat = acm_write_start(acm, wbn); |
675 | if (stat < 0) | |
1da177e4 | 676 | return stat; |
1da177e4 LT |
677 | return count; |
678 | } | |
679 | ||
680 | static int acm_tty_write_room(struct tty_struct *tty) | |
681 | { | |
682 | struct acm *acm = tty->driver_data; | |
884b600f ON |
683 | /* |
684 | * Do not let the line discipline to know that we have a reserve, | |
685 | * or it might get too enthusiastic. | |
686 | */ | |
934da463 | 687 | return acm_wb_is_avail(acm) ? acm->writesize : 0; |
1da177e4 LT |
688 | } |
689 | ||
690 | static int acm_tty_chars_in_buffer(struct tty_struct *tty) | |
691 | { | |
692 | struct acm *acm = tty->driver_data; | |
7fb57a01 HS |
693 | /* |
694 | * if the device was unplugged then any remaining characters fell out | |
695 | * of the connector ;) | |
696 | */ | |
697 | if (acm->disconnected) | |
23198fda | 698 | return 0; |
884b600f ON |
699 | /* |
700 | * This is inaccurate (overcounts), but it works. | |
701 | */ | |
86478944 | 702 | return (ACM_NW - acm_wb_is_avail(acm)) * acm->writesize; |
1da177e4 LT |
703 | } |
704 | ||
705 | static void acm_tty_throttle(struct tty_struct *tty) | |
706 | { | |
707 | struct acm *acm = tty->driver_data; | |
088c64f8 | 708 | |
088c64f8 JH |
709 | spin_lock_irq(&acm->read_lock); |
710 | acm->throttle_req = 1; | |
711 | spin_unlock_irq(&acm->read_lock); | |
1da177e4 LT |
712 | } |
713 | ||
714 | static void acm_tty_unthrottle(struct tty_struct *tty) | |
715 | { | |
716 | struct acm *acm = tty->driver_data; | |
088c64f8 JH |
717 | unsigned int was_throttled; |
718 | ||
088c64f8 JH |
719 | spin_lock_irq(&acm->read_lock); |
720 | was_throttled = acm->throttled; | |
721 | acm->throttled = 0; | |
722 | acm->throttle_req = 0; | |
723 | spin_unlock_irq(&acm->read_lock); | |
724 | ||
725 | if (was_throttled) | |
726 | acm_submit_read_urbs(acm, GFP_KERNEL); | |
1da177e4 LT |
727 | } |
728 | ||
9e98966c | 729 | static int acm_tty_break_ctl(struct tty_struct *tty, int state) |
1da177e4 LT |
730 | { |
731 | struct acm *acm = tty->driver_data; | |
9e98966c | 732 | int retval; |
7fb57a01 | 733 | |
9e98966c AC |
734 | retval = acm_send_break(acm, state ? 0xffff : 0); |
735 | if (retval < 0) | |
a5cc7ef9 JH |
736 | dev_dbg(&acm->control->dev, "%s - send break failed\n", |
737 | __func__); | |
9e98966c | 738 | return retval; |
1da177e4 LT |
739 | } |
740 | ||
60b33c13 | 741 | static int acm_tty_tiocmget(struct tty_struct *tty) |
1da177e4 LT |
742 | { |
743 | struct acm *acm = tty->driver_data; | |
744 | ||
1da177e4 LT |
745 | return (acm->ctrlout & ACM_CTRL_DTR ? TIOCM_DTR : 0) | |
746 | (acm->ctrlout & ACM_CTRL_RTS ? TIOCM_RTS : 0) | | |
747 | (acm->ctrlin & ACM_CTRL_DSR ? TIOCM_DSR : 0) | | |
748 | (acm->ctrlin & ACM_CTRL_RI ? TIOCM_RI : 0) | | |
749 | (acm->ctrlin & ACM_CTRL_DCD ? TIOCM_CD : 0) | | |
750 | TIOCM_CTS; | |
751 | } | |
752 | ||
20b9d177 | 753 | static int acm_tty_tiocmset(struct tty_struct *tty, |
1da177e4 LT |
754 | unsigned int set, unsigned int clear) |
755 | { | |
756 | struct acm *acm = tty->driver_data; | |
757 | unsigned int newctrl; | |
758 | ||
1da177e4 | 759 | newctrl = acm->ctrlout; |
6e47e069 AC |
760 | set = (set & TIOCM_DTR ? ACM_CTRL_DTR : 0) | |
761 | (set & TIOCM_RTS ? ACM_CTRL_RTS : 0); | |
762 | clear = (clear & TIOCM_DTR ? ACM_CTRL_DTR : 0) | | |
763 | (clear & TIOCM_RTS ? ACM_CTRL_RTS : 0); | |
1da177e4 LT |
764 | |
765 | newctrl = (newctrl & ~clear) | set; | |
766 | ||
767 | if (acm->ctrlout == newctrl) | |
768 | return 0; | |
769 | return acm_set_control(acm, acm->ctrlout = newctrl); | |
770 | } | |
771 | ||
18c75720 ON |
772 | static int get_serial_info(struct acm *acm, struct serial_struct __user *info) |
773 | { | |
774 | struct serial_struct tmp; | |
775 | ||
776 | if (!info) | |
777 | return -EINVAL; | |
778 | ||
779 | memset(&tmp, 0, sizeof(tmp)); | |
780 | tmp.flags = ASYNC_LOW_LATENCY; | |
781 | tmp.xmit_fifo_size = acm->writesize; | |
782 | tmp.baud_base = le32_to_cpu(acm->line.dwDTERate); | |
783 | ||
784 | if (copy_to_user(info, &tmp, sizeof(tmp))) | |
785 | return -EFAULT; | |
786 | else | |
787 | return 0; | |
788 | } | |
789 | ||
6caa76b7 | 790 | static int acm_tty_ioctl(struct tty_struct *tty, |
6e47e069 | 791 | unsigned int cmd, unsigned long arg) |
1da177e4 | 792 | { |
18c75720 ON |
793 | struct acm *acm = tty->driver_data; |
794 | int rv = -ENOIOCTLCMD; | |
795 | ||
796 | switch (cmd) { | |
797 | case TIOCGSERIAL: /* gets serial port data */ | |
798 | rv = get_serial_info(acm, (struct serial_struct __user *) arg); | |
799 | break; | |
800 | } | |
801 | ||
802 | return rv; | |
1da177e4 LT |
803 | } |
804 | ||
4c4c9432 | 805 | static const __u32 acm_tty_speed[] = { |
1da177e4 LT |
806 | 0, 50, 75, 110, 134, 150, 200, 300, 600, |
807 | 1200, 1800, 2400, 4800, 9600, 19200, 38400, | |
808 | 57600, 115200, 230400, 460800, 500000, 576000, | |
809 | 921600, 1000000, 1152000, 1500000, 2000000, | |
810 | 2500000, 3000000, 3500000, 4000000 | |
811 | }; | |
812 | ||
4c4c9432 | 813 | static const __u8 acm_tty_size[] = { |
1da177e4 LT |
814 | 5, 6, 7, 8 |
815 | }; | |
816 | ||
6e47e069 AC |
817 | static void acm_tty_set_termios(struct tty_struct *tty, |
818 | struct ktermios *termios_old) | |
1da177e4 LT |
819 | { |
820 | struct acm *acm = tty->driver_data; | |
606d099c | 821 | struct ktermios *termios = tty->termios; |
1da177e4 LT |
822 | struct usb_cdc_line_coding newline; |
823 | int newctrl = acm->ctrlout; | |
824 | ||
9b80fee1 | 825 | newline.dwDTERate = cpu_to_le32(tty_get_baud_rate(tty)); |
1da177e4 LT |
826 | newline.bCharFormat = termios->c_cflag & CSTOPB ? 2 : 0; |
827 | newline.bParityType = termios->c_cflag & PARENB ? | |
6e47e069 AC |
828 | (termios->c_cflag & PARODD ? 1 : 2) + |
829 | (termios->c_cflag & CMSPAR ? 2 : 0) : 0; | |
1da177e4 | 830 | newline.bDataBits = acm_tty_size[(termios->c_cflag & CSIZE) >> 4]; |
6e47e069 | 831 | /* FIXME: Needs to clear unsupported bits in the termios */ |
1da177e4 LT |
832 | acm->clocal = ((termios->c_cflag & CLOCAL) != 0); |
833 | ||
834 | if (!newline.dwDTERate) { | |
835 | newline.dwDTERate = acm->line.dwDTERate; | |
836 | newctrl &= ~ACM_CTRL_DTR; | |
6e47e069 AC |
837 | } else |
838 | newctrl |= ACM_CTRL_DTR; | |
1da177e4 LT |
839 | |
840 | if (newctrl != acm->ctrlout) | |
841 | acm_set_control(acm, acm->ctrlout = newctrl); | |
842 | ||
843 | if (memcmp(&acm->line, &newline, sizeof newline)) { | |
844 | memcpy(&acm->line, &newline, sizeof newline); | |
a5cc7ef9 JH |
845 | dev_dbg(&acm->control->dev, "%s - set line: %d %d %d %d\n", |
846 | __func__, | |
847 | le32_to_cpu(newline.dwDTERate), | |
1da177e4 LT |
848 | newline.bCharFormat, newline.bParityType, |
849 | newline.bDataBits); | |
850 | acm_set_line(acm, &acm->line); | |
851 | } | |
852 | } | |
853 | ||
7fb57a01 HS |
854 | static const struct tty_port_operations acm_port_ops = { |
855 | .shutdown = acm_port_shutdown, | |
856 | .activate = acm_port_activate, | |
857 | .destruct = acm_port_destruct, | |
858 | }; | |
859 | ||
1da177e4 LT |
860 | /* |
861 | * USB probe and disconnect routines. | |
862 | */ | |
863 | ||
830f4021 | 864 | /* Little helpers: write/read buffers free */ |
884b600f ON |
865 | static void acm_write_buffers_free(struct acm *acm) |
866 | { | |
867 | int i; | |
868 | struct acm_wb *wb; | |
a496c64f | 869 | struct usb_device *usb_dev = interface_to_usbdev(acm->control); |
884b600f | 870 | |
6e47e069 | 871 | for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++) |
997ea58e | 872 | usb_free_coherent(usb_dev, acm->writesize, wb->buf, wb->dmah); |
884b600f ON |
873 | } |
874 | ||
830f4021 ON |
875 | static void acm_read_buffers_free(struct acm *acm) |
876 | { | |
877 | struct usb_device *usb_dev = interface_to_usbdev(acm->control); | |
dab54c9f | 878 | int i; |
830f4021 | 879 | |
dab54c9f | 880 | for (i = 0; i < acm->rx_buflimit; i++) |
997ea58e | 881 | usb_free_coherent(usb_dev, acm->readsize, |
088c64f8 | 882 | acm->read_buffers[i].base, acm->read_buffers[i].dma); |
830f4021 ON |
883 | } |
884 | ||
884b600f ON |
885 | /* Little helper: write buffers allocate */ |
886 | static int acm_write_buffers_alloc(struct acm *acm) | |
887 | { | |
888 | int i; | |
889 | struct acm_wb *wb; | |
890 | ||
86478944 | 891 | for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++) { |
997ea58e | 892 | wb->buf = usb_alloc_coherent(acm->dev, acm->writesize, GFP_KERNEL, |
884b600f ON |
893 | &wb->dmah); |
894 | if (!wb->buf) { | |
895 | while (i != 0) { | |
896 | --i; | |
897 | --wb; | |
997ea58e | 898 | usb_free_coherent(acm->dev, acm->writesize, |
884b600f ON |
899 | wb->buf, wb->dmah); |
900 | } | |
901 | return -ENOMEM; | |
902 | } | |
903 | } | |
904 | return 0; | |
905 | } | |
906 | ||
10077d4a AC |
907 | static int acm_probe(struct usb_interface *intf, |
908 | const struct usb_device_id *id) | |
1da177e4 LT |
909 | { |
910 | struct usb_cdc_union_desc *union_header = NULL; | |
c4cabd28 | 911 | struct usb_cdc_country_functional_desc *cfd = NULL; |
c6dbf554 | 912 | unsigned char *buffer = intf->altsetting->extra; |
1da177e4 LT |
913 | int buflen = intf->altsetting->extralen; |
914 | struct usb_interface *control_interface; | |
915 | struct usb_interface *data_interface; | |
a2bfb4a3 ON |
916 | struct usb_endpoint_descriptor *epctrl = NULL; |
917 | struct usb_endpoint_descriptor *epread = NULL; | |
918 | struct usb_endpoint_descriptor *epwrite = NULL; | |
1da177e4 LT |
919 | struct usb_device *usb_dev = interface_to_usbdev(intf); |
920 | struct acm *acm; | |
921 | int minor; | |
6e47e069 | 922 | int ctrlsize, readsize; |
1da177e4 LT |
923 | u8 *buf; |
924 | u8 ac_management_function = 0; | |
925 | u8 call_management_function = 0; | |
926 | int call_interface_num = -1; | |
fd5054c1 | 927 | int data_interface_num = -1; |
1da177e4 | 928 | unsigned long quirks; |
86478944 | 929 | int num_rx_buf; |
61a87adf | 930 | int i; |
a2bfb4a3 | 931 | int combined_interfaces = 0; |
1da177e4 | 932 | |
86478944 | 933 | /* normal quirks */ |
1da177e4 | 934 | quirks = (unsigned long)id->driver_info; |
86478944 ON |
935 | num_rx_buf = (quirks == SINGLE_RX_URB) ? 1 : ACM_NR; |
936 | ||
937 | /* handle quirks deadly to normal probing*/ | |
1da177e4 LT |
938 | if (quirks == NO_UNION_NORMAL) { |
939 | data_interface = usb_ifnum_to_if(usb_dev, 1); | |
940 | control_interface = usb_ifnum_to_if(usb_dev, 0); | |
941 | goto skip_normal_probe; | |
942 | } | |
6e47e069 | 943 | |
1da177e4 LT |
944 | /* normal probing*/ |
945 | if (!buffer) { | |
9908a32e | 946 | dev_err(&intf->dev, "Weird descriptor references\n"); |
1da177e4 LT |
947 | return -EINVAL; |
948 | } | |
949 | ||
950 | if (!buflen) { | |
577045c0 TG |
951 | if (intf->cur_altsetting->endpoint && |
952 | intf->cur_altsetting->endpoint->extralen && | |
6e47e069 AC |
953 | intf->cur_altsetting->endpoint->extra) { |
954 | dev_dbg(&intf->dev, | |
955 | "Seeking extra descriptors on endpoint\n"); | |
1da177e4 LT |
956 | buflen = intf->cur_altsetting->endpoint->extralen; |
957 | buffer = intf->cur_altsetting->endpoint->extra; | |
958 | } else { | |
9908a32e GKH |
959 | dev_err(&intf->dev, |
960 | "Zero length descriptor references\n"); | |
1da177e4 LT |
961 | return -EINVAL; |
962 | } | |
963 | } | |
964 | ||
965 | while (buflen > 0) { | |
6e47e069 | 966 | if (buffer[1] != USB_DT_CS_INTERFACE) { |
9908a32e | 967 | dev_err(&intf->dev, "skipping garbage\n"); |
1da177e4 LT |
968 | goto next_desc; |
969 | } | |
970 | ||
6e47e069 AC |
971 | switch (buffer[2]) { |
972 | case USB_CDC_UNION_TYPE: /* we've found it */ | |
973 | if (union_header) { | |
974 | dev_err(&intf->dev, "More than one " | |
975 | "union descriptor, skipping ...\n"); | |
976 | goto next_desc; | |
1da177e4 | 977 | } |
6e47e069 AC |
978 | union_header = (struct usb_cdc_union_desc *)buffer; |
979 | break; | |
980 | case USB_CDC_COUNTRY_TYPE: /* export through sysfs*/ | |
981 | cfd = (struct usb_cdc_country_functional_desc *)buffer; | |
982 | break; | |
983 | case USB_CDC_HEADER_TYPE: /* maybe check version */ | |
984 | break; /* for now we ignore it */ | |
985 | case USB_CDC_ACM_TYPE: | |
986 | ac_management_function = buffer[3]; | |
987 | break; | |
988 | case USB_CDC_CALL_MANAGEMENT_TYPE: | |
989 | call_management_function = buffer[3]; | |
990 | call_interface_num = buffer[4]; | |
ce126644 | 991 | if ( (quirks & NOT_A_MODEM) == 0 && (call_management_function & 3) != 3) |
6e47e069 AC |
992 | dev_err(&intf->dev, "This device cannot do calls on its own. It is not a modem.\n"); |
993 | break; | |
994 | default: | |
995 | /* there are LOTS more CDC descriptors that | |
996 | * could legitimately be found here. | |
997 | */ | |
998 | dev_dbg(&intf->dev, "Ignoring descriptor: " | |
999 | "type %02x, length %d\n", | |
1000 | buffer[2], buffer[0]); | |
1001 | break; | |
1002 | } | |
1da177e4 LT |
1003 | next_desc: |
1004 | buflen -= buffer[0]; | |
1005 | buffer += buffer[0]; | |
1006 | } | |
1007 | ||
1008 | if (!union_header) { | |
1009 | if (call_interface_num > 0) { | |
6e47e069 | 1010 | dev_dbg(&intf->dev, "No union descriptor, using call management descriptor\n"); |
fd5054c1 ES |
1011 | /* quirks for Droids MuIn LCD */ |
1012 | if (quirks & NO_DATA_INTERFACE) | |
1013 | data_interface = usb_ifnum_to_if(usb_dev, 0); | |
1014 | else | |
1015 | data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = call_interface_num)); | |
1da177e4 LT |
1016 | control_interface = intf; |
1017 | } else { | |
a2bfb4a3 ON |
1018 | if (intf->cur_altsetting->desc.bNumEndpoints != 3) { |
1019 | dev_dbg(&intf->dev,"No union descriptor, giving up\n"); | |
1020 | return -ENODEV; | |
1021 | } else { | |
1022 | dev_warn(&intf->dev,"No union descriptor, testing for castrated device\n"); | |
1023 | combined_interfaces = 1; | |
1024 | control_interface = data_interface = intf; | |
1025 | goto look_for_collapsed_interface; | |
1026 | } | |
1da177e4 LT |
1027 | } |
1028 | } else { | |
1029 | control_interface = usb_ifnum_to_if(usb_dev, union_header->bMasterInterface0); | |
1030 | data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = union_header->bSlaveInterface0)); | |
1031 | if (!control_interface || !data_interface) { | |
6e47e069 | 1032 | dev_dbg(&intf->dev, "no interfaces\n"); |
1da177e4 LT |
1033 | return -ENODEV; |
1034 | } | |
1035 | } | |
6e47e069 | 1036 | |
1da177e4 | 1037 | if (data_interface_num != call_interface_num) |
6e47e069 | 1038 | dev_dbg(&intf->dev, "Separate call control interface. That is not fully supported.\n"); |
1da177e4 | 1039 | |
a2bfb4a3 ON |
1040 | if (control_interface == data_interface) { |
1041 | /* some broken devices designed for windows work this way */ | |
1042 | dev_warn(&intf->dev,"Control and data interfaces are not separated!\n"); | |
1043 | combined_interfaces = 1; | |
1044 | /* a popular other OS doesn't use it */ | |
1045 | quirks |= NO_CAP_LINE; | |
1046 | if (data_interface->cur_altsetting->desc.bNumEndpoints != 3) { | |
1047 | dev_err(&intf->dev, "This needs exactly 3 endpoints\n"); | |
1048 | return -EINVAL; | |
1049 | } | |
1050 | look_for_collapsed_interface: | |
1051 | for (i = 0; i < 3; i++) { | |
1052 | struct usb_endpoint_descriptor *ep; | |
1053 | ep = &data_interface->cur_altsetting->endpoint[i].desc; | |
1054 | ||
1055 | if (usb_endpoint_is_int_in(ep)) | |
1056 | epctrl = ep; | |
1057 | else if (usb_endpoint_is_bulk_out(ep)) | |
1058 | epwrite = ep; | |
1059 | else if (usb_endpoint_is_bulk_in(ep)) | |
1060 | epread = ep; | |
1061 | else | |
1062 | return -EINVAL; | |
1063 | } | |
1064 | if (!epctrl || !epread || !epwrite) | |
1065 | return -ENODEV; | |
1066 | else | |
1067 | goto made_compressed_probe; | |
1068 | } | |
1069 | ||
1da177e4 LT |
1070 | skip_normal_probe: |
1071 | ||
1072 | /*workaround for switched interfaces */ | |
6e47e069 AC |
1073 | if (data_interface->cur_altsetting->desc.bInterfaceClass |
1074 | != CDC_DATA_INTERFACE_TYPE) { | |
1075 | if (control_interface->cur_altsetting->desc.bInterfaceClass | |
1076 | == CDC_DATA_INTERFACE_TYPE) { | |
1da177e4 | 1077 | struct usb_interface *t; |
6e47e069 AC |
1078 | dev_dbg(&intf->dev, |
1079 | "Your device has switched interfaces.\n"); | |
1da177e4 LT |
1080 | t = control_interface; |
1081 | control_interface = data_interface; | |
1082 | data_interface = t; | |
1083 | } else { | |
1084 | return -EINVAL; | |
1085 | } | |
1086 | } | |
74da5d68 AS |
1087 | |
1088 | /* Accept probe requests only for the control interface */ | |
a2bfb4a3 | 1089 | if (!combined_interfaces && intf != control_interface) |
74da5d68 | 1090 | return -ENODEV; |
6e47e069 | 1091 | |
a2bfb4a3 ON |
1092 | if (!combined_interfaces && usb_interface_claimed(data_interface)) { |
1093 | /* valid in this context */ | |
6e47e069 | 1094 | dev_dbg(&intf->dev, "The data interface isn't available\n"); |
1da177e4 LT |
1095 | return -EBUSY; |
1096 | } | |
1097 | ||
1098 | ||
1099 | if (data_interface->cur_altsetting->desc.bNumEndpoints < 2) | |
1100 | return -EINVAL; | |
1101 | ||
1102 | epctrl = &control_interface->cur_altsetting->endpoint[0].desc; | |
1103 | epread = &data_interface->cur_altsetting->endpoint[0].desc; | |
1104 | epwrite = &data_interface->cur_altsetting->endpoint[1].desc; | |
1105 | ||
1106 | ||
1107 | /* workaround for switched endpoints */ | |
45aea704 | 1108 | if (!usb_endpoint_dir_in(epread)) { |
1da177e4 LT |
1109 | /* descriptors are swapped */ |
1110 | struct usb_endpoint_descriptor *t; | |
6e47e069 AC |
1111 | dev_dbg(&intf->dev, |
1112 | "The data interface has switched endpoints\n"); | |
1da177e4 LT |
1113 | t = epread; |
1114 | epread = epwrite; | |
1115 | epwrite = t; | |
1116 | } | |
a2bfb4a3 | 1117 | made_compressed_probe: |
a5cc7ef9 | 1118 | dev_dbg(&intf->dev, "interfaces are valid\n"); |
1da177e4 | 1119 | |
6e47e069 AC |
1120 | acm = kzalloc(sizeof(struct acm), GFP_KERNEL); |
1121 | if (acm == NULL) { | |
255ab56c | 1122 | dev_err(&intf->dev, "out of memory (acm kzalloc)\n"); |
1da177e4 LT |
1123 | goto alloc_fail; |
1124 | } | |
1da177e4 | 1125 | |
7fb57a01 HS |
1126 | minor = acm_alloc_minor(acm); |
1127 | if (minor == ACM_TTY_MINORS) { | |
1128 | dev_err(&intf->dev, "no more free acm devices\n"); | |
1129 | kfree(acm); | |
1130 | return -ENODEV; | |
1131 | } | |
1132 | ||
29cc8897 KM |
1133 | ctrlsize = usb_endpoint_maxp(epctrl); |
1134 | readsize = usb_endpoint_maxp(epread) * | |
6e47e069 | 1135 | (quirks == SINGLE_RX_URB ? 1 : 2); |
a2bfb4a3 | 1136 | acm->combined_interfaces = combined_interfaces; |
29cc8897 | 1137 | acm->writesize = usb_endpoint_maxp(epwrite) * 20; |
1da177e4 LT |
1138 | acm->control = control_interface; |
1139 | acm->data = data_interface; | |
1140 | acm->minor = minor; | |
1141 | acm->dev = usb_dev; | |
1142 | acm->ctrl_caps = ac_management_function; | |
a2bfb4a3 ON |
1143 | if (quirks & NO_CAP_LINE) |
1144 | acm->ctrl_caps &= ~USB_CDC_CAP_LINE; | |
1da177e4 LT |
1145 | acm->ctrlsize = ctrlsize; |
1146 | acm->readsize = readsize; | |
86478944 | 1147 | acm->rx_buflimit = num_rx_buf; |
c4028958 | 1148 | INIT_WORK(&acm->work, acm_softint); |
884b600f | 1149 | spin_lock_init(&acm->write_lock); |
61a87adf | 1150 | spin_lock_init(&acm->read_lock); |
1365baf7 | 1151 | mutex_init(&acm->mutex); |
61a87adf | 1152 | acm->rx_endpoint = usb_rcvbulkpipe(usb_dev, epread->bEndpointAddress); |
cf7fdd57 ON |
1153 | acm->is_int_ep = usb_endpoint_xfer_int(epread); |
1154 | if (acm->is_int_ep) | |
1155 | acm->bInterval = epread->bInterval; | |
739e0285 AC |
1156 | tty_port_init(&acm->port); |
1157 | acm->port.ops = &acm_port_ops; | |
1da177e4 | 1158 | |
997ea58e | 1159 | buf = usb_alloc_coherent(usb_dev, ctrlsize, GFP_KERNEL, &acm->ctrl_dma); |
1da177e4 | 1160 | if (!buf) { |
255ab56c | 1161 | dev_err(&intf->dev, "out of memory (ctrl buffer alloc)\n"); |
1da177e4 LT |
1162 | goto alloc_fail2; |
1163 | } | |
1164 | acm->ctrl_buffer = buf; | |
1165 | ||
884b600f | 1166 | if (acm_write_buffers_alloc(acm) < 0) { |
255ab56c | 1167 | dev_err(&intf->dev, "out of memory (write buffer alloc)\n"); |
1da177e4 LT |
1168 | goto alloc_fail4; |
1169 | } | |
1da177e4 LT |
1170 | |
1171 | acm->ctrlurb = usb_alloc_urb(0, GFP_KERNEL); | |
1172 | if (!acm->ctrlurb) { | |
255ab56c | 1173 | dev_err(&intf->dev, "out of memory (ctrlurb kmalloc)\n"); |
1da177e4 LT |
1174 | goto alloc_fail5; |
1175 | } | |
86478944 | 1176 | for (i = 0; i < num_rx_buf; i++) { |
088c64f8 JH |
1177 | struct acm_rb *rb = &(acm->read_buffers[i]); |
1178 | struct urb *urb; | |
61a87adf | 1179 | |
74f5e1ba JH |
1180 | rb->base = usb_alloc_coherent(acm->dev, readsize, GFP_KERNEL, |
1181 | &rb->dma); | |
1182 | if (!rb->base) { | |
1183 | dev_err(&intf->dev, "out of memory " | |
1184 | "(read bufs usb_alloc_coherent)\n"); | |
1185 | goto alloc_fail6; | |
1186 | } | |
088c64f8 JH |
1187 | rb->index = i; |
1188 | rb->instance = acm; | |
74f5e1ba | 1189 | |
088c64f8 JH |
1190 | urb = usb_alloc_urb(0, GFP_KERNEL); |
1191 | if (!urb) { | |
255ab56c | 1192 | dev_err(&intf->dev, |
6e47e069 | 1193 | "out of memory (read urbs usb_alloc_urb)\n"); |
c2572b78 | 1194 | goto alloc_fail6; |
61a87adf | 1195 | } |
088c64f8 JH |
1196 | urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
1197 | urb->transfer_dma = rb->dma; | |
1198 | if (acm->is_int_ep) { | |
1199 | usb_fill_int_urb(urb, acm->dev, | |
1200 | acm->rx_endpoint, | |
1201 | rb->base, | |
1202 | acm->readsize, | |
1203 | acm_read_bulk_callback, rb, | |
1204 | acm->bInterval); | |
1205 | } else { | |
1206 | usb_fill_bulk_urb(urb, acm->dev, | |
1207 | acm->rx_endpoint, | |
1208 | rb->base, | |
1209 | acm->readsize, | |
1210 | acm_read_bulk_callback, rb); | |
1211 | } | |
61a87adf | 1212 | |
088c64f8 JH |
1213 | acm->read_urbs[i] = urb; |
1214 | __set_bit(i, &acm->read_urbs_free); | |
61a87adf | 1215 | } |
6e47e069 | 1216 | for (i = 0; i < ACM_NW; i++) { |
e4cf3aa8 DE |
1217 | struct acm_wb *snd = &(acm->wb[i]); |
1218 | ||
6e47e069 AC |
1219 | snd->urb = usb_alloc_urb(0, GFP_KERNEL); |
1220 | if (snd->urb == NULL) { | |
255ab56c | 1221 | dev_err(&intf->dev, |
59d7fec7 | 1222 | "out of memory (write urbs usb_alloc_urb)\n"); |
74f5e1ba | 1223 | goto alloc_fail7; |
e4cf3aa8 DE |
1224 | } |
1225 | ||
5186ffee AL |
1226 | if (usb_endpoint_xfer_int(epwrite)) |
1227 | usb_fill_int_urb(snd->urb, usb_dev, | |
1228 | usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress), | |
1229 | NULL, acm->writesize, acm_write_bulk, snd, epwrite->bInterval); | |
1230 | else | |
1231 | usb_fill_bulk_urb(snd->urb, usb_dev, | |
1232 | usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress), | |
1233 | NULL, acm->writesize, acm_write_bulk, snd); | |
e4cf3aa8 DE |
1234 | snd->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
1235 | snd->instance = acm; | |
1da177e4 LT |
1236 | } |
1237 | ||
6e47e069 | 1238 | usb_set_intfdata(intf, acm); |
c4cabd28 ON |
1239 | |
1240 | i = device_create_file(&intf->dev, &dev_attr_bmCapabilities); | |
1241 | if (i < 0) | |
74f5e1ba | 1242 | goto alloc_fail7; |
c4cabd28 ON |
1243 | |
1244 | if (cfd) { /* export the country data */ | |
1245 | acm->country_codes = kmalloc(cfd->bLength - 4, GFP_KERNEL); | |
1246 | if (!acm->country_codes) | |
1247 | goto skip_countries; | |
1248 | acm->country_code_size = cfd->bLength - 4; | |
6e47e069 AC |
1249 | memcpy(acm->country_codes, (u8 *)&cfd->wCountyCode0, |
1250 | cfd->bLength - 4); | |
c4cabd28 ON |
1251 | acm->country_rel_date = cfd->iCountryCodeRelDate; |
1252 | ||
1253 | i = device_create_file(&intf->dev, &dev_attr_wCountryCodes); | |
1254 | if (i < 0) { | |
1255 | kfree(acm->country_codes); | |
e7c8e860 JL |
1256 | acm->country_codes = NULL; |
1257 | acm->country_code_size = 0; | |
c4cabd28 ON |
1258 | goto skip_countries; |
1259 | } | |
1260 | ||
6e47e069 AC |
1261 | i = device_create_file(&intf->dev, |
1262 | &dev_attr_iCountryCodeRelDate); | |
c4cabd28 | 1263 | if (i < 0) { |
c2572b78 | 1264 | device_remove_file(&intf->dev, &dev_attr_wCountryCodes); |
c4cabd28 | 1265 | kfree(acm->country_codes); |
e7c8e860 JL |
1266 | acm->country_codes = NULL; |
1267 | acm->country_code_size = 0; | |
c4cabd28 ON |
1268 | goto skip_countries; |
1269 | } | |
1270 | } | |
1271 | ||
1272 | skip_countries: | |
6e47e069 | 1273 | usb_fill_int_urb(acm->ctrlurb, usb_dev, |
a2bfb4a3 ON |
1274 | usb_rcvintpipe(usb_dev, epctrl->bEndpointAddress), |
1275 | acm->ctrl_buffer, ctrlsize, acm_ctrl_irq, acm, | |
1276 | /* works around buggy devices */ | |
1277 | epctrl->bInterval ? epctrl->bInterval : 0xff); | |
1da177e4 LT |
1278 | acm->ctrlurb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
1279 | acm->ctrlurb->transfer_dma = acm->ctrl_dma; | |
1280 | ||
1da177e4 LT |
1281 | dev_info(&intf->dev, "ttyACM%d: USB ACM device\n", minor); |
1282 | ||
1283 | acm_set_control(acm, acm->ctrlout); | |
1284 | ||
1285 | acm->line.dwDTERate = cpu_to_le32(9600); | |
1286 | acm->line.bDataBits = 8; | |
1287 | acm_set_line(acm, &acm->line); | |
1288 | ||
1289 | usb_driver_claim_interface(&acm_driver, data_interface, acm); | |
672c4e18 | 1290 | usb_set_intfdata(data_interface, acm); |
1da177e4 | 1291 | |
83ef344a | 1292 | usb_get_intf(control_interface); |
1293 | tty_register_device(acm_tty_driver, minor, &control_interface->dev); | |
1da177e4 | 1294 | |
c4cabd28 | 1295 | return 0; |
74f5e1ba | 1296 | alloc_fail7: |
e4cf3aa8 DE |
1297 | for (i = 0; i < ACM_NW; i++) |
1298 | usb_free_urb(acm->wb[i].urb); | |
c2572b78 | 1299 | alloc_fail6: |
86478944 | 1300 | for (i = 0; i < num_rx_buf; i++) |
088c64f8 | 1301 | usb_free_urb(acm->read_urbs[i]); |
74f5e1ba | 1302 | acm_read_buffers_free(acm); |
1da177e4 LT |
1303 | usb_free_urb(acm->ctrlurb); |
1304 | alloc_fail5: | |
884b600f | 1305 | acm_write_buffers_free(acm); |
1da177e4 | 1306 | alloc_fail4: |
997ea58e | 1307 | usb_free_coherent(usb_dev, ctrlsize, acm->ctrl_buffer, acm->ctrl_dma); |
1da177e4 | 1308 | alloc_fail2: |
7fb57a01 | 1309 | acm_release_minor(acm); |
1da177e4 LT |
1310 | kfree(acm); |
1311 | alloc_fail: | |
1312 | return -ENOMEM; | |
1313 | } | |
1314 | ||
1365baf7 ON |
1315 | static void stop_data_traffic(struct acm *acm) |
1316 | { | |
1317 | int i; | |
a5cc7ef9 JH |
1318 | |
1319 | dev_dbg(&acm->control->dev, "%s\n", __func__); | |
1365baf7 | 1320 | |
1365baf7 | 1321 | usb_kill_urb(acm->ctrlurb); |
6e47e069 | 1322 | for (i = 0; i < ACM_NW; i++) |
e4cf3aa8 | 1323 | usb_kill_urb(acm->wb[i].urb); |
1365baf7 | 1324 | for (i = 0; i < acm->rx_buflimit; i++) |
088c64f8 | 1325 | usb_kill_urb(acm->read_urbs[i]); |
1365baf7 ON |
1326 | |
1327 | cancel_work_sync(&acm->work); | |
1328 | } | |
1329 | ||
1da177e4 LT |
1330 | static void acm_disconnect(struct usb_interface *intf) |
1331 | { | |
c4cabd28 | 1332 | struct acm *acm = usb_get_intfdata(intf); |
1da177e4 | 1333 | struct usb_device *usb_dev = interface_to_usbdev(intf); |
10077d4a | 1334 | struct tty_struct *tty; |
7fb57a01 HS |
1335 | int i; |
1336 | ||
1337 | dev_dbg(&intf->dev, "%s\n", __func__); | |
1da177e4 | 1338 | |
672c4e18 DB |
1339 | /* sibling interface is already cleaning up */ |
1340 | if (!acm) | |
86067eea | 1341 | return; |
672c4e18 | 1342 | |
7fb57a01 HS |
1343 | mutex_lock(&acm->mutex); |
1344 | acm->disconnected = true; | |
6e47e069 | 1345 | if (acm->country_codes) { |
74da5d68 AS |
1346 | device_remove_file(&acm->control->dev, |
1347 | &dev_attr_wCountryCodes); | |
1348 | device_remove_file(&acm->control->dev, | |
1349 | &dev_attr_iCountryCodeRelDate); | |
c4cabd28 | 1350 | } |
74da5d68 | 1351 | device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities); |
86067eea ON |
1352 | usb_set_intfdata(acm->control, NULL); |
1353 | usb_set_intfdata(acm->data, NULL); | |
7fb57a01 HS |
1354 | mutex_unlock(&acm->mutex); |
1355 | ||
1356 | tty = tty_port_tty_get(&acm->port); | |
1357 | if (tty) { | |
1358 | tty_vhangup(tty); | |
1359 | tty_kref_put(tty); | |
1360 | } | |
1da177e4 | 1361 | |
1365baf7 | 1362 | stop_data_traffic(acm); |
1da177e4 | 1363 | |
7fb57a01 HS |
1364 | usb_free_urb(acm->ctrlurb); |
1365 | for (i = 0; i < ACM_NW; i++) | |
1366 | usb_free_urb(acm->wb[i].urb); | |
1367 | for (i = 0; i < acm->rx_buflimit; i++) | |
1368 | usb_free_urb(acm->read_urbs[i]); | |
884b600f | 1369 | acm_write_buffers_free(acm); |
7fb57a01 | 1370 | usb_free_coherent(usb_dev, acm->ctrlsize, acm->ctrl_buffer, acm->ctrl_dma); |
830f4021 | 1371 | acm_read_buffers_free(acm); |
1da177e4 | 1372 | |
a2bfb4a3 ON |
1373 | if (!acm->combined_interfaces) |
1374 | usb_driver_release_interface(&acm_driver, intf == acm->control ? | |
830f4021 | 1375 | acm->data : acm->control); |
1da177e4 | 1376 | |
7fb57a01 | 1377 | tty_port_put(&acm->port); |
1da177e4 LT |
1378 | } |
1379 | ||
35758589 | 1380 | #ifdef CONFIG_PM |
1365baf7 ON |
1381 | static int acm_suspend(struct usb_interface *intf, pm_message_t message) |
1382 | { | |
1383 | struct acm *acm = usb_get_intfdata(intf); | |
11ea859d ON |
1384 | int cnt; |
1385 | ||
5b1b0b81 | 1386 | if (PMSG_IS_AUTO(message)) { |
11ea859d ON |
1387 | int b; |
1388 | ||
088c64f8 JH |
1389 | spin_lock_irq(&acm->write_lock); |
1390 | b = acm->transmitting; | |
1391 | spin_unlock_irq(&acm->write_lock); | |
11ea859d ON |
1392 | if (b) |
1393 | return -EBUSY; | |
1394 | } | |
1395 | ||
1396 | spin_lock_irq(&acm->read_lock); | |
1397 | spin_lock(&acm->write_lock); | |
1398 | cnt = acm->susp_count++; | |
1399 | spin_unlock(&acm->write_lock); | |
1400 | spin_unlock_irq(&acm->read_lock); | |
1365baf7 | 1401 | |
11ea859d | 1402 | if (cnt) |
1365baf7 | 1403 | return 0; |
1365baf7 | 1404 | |
7fb57a01 | 1405 | if (test_bit(ASYNCB_INITIALIZED, &acm->port.flags)) |
1365baf7 ON |
1406 | stop_data_traffic(acm); |
1407 | ||
1365baf7 ON |
1408 | return 0; |
1409 | } | |
1410 | ||
1411 | static int acm_resume(struct usb_interface *intf) | |
1412 | { | |
1413 | struct acm *acm = usb_get_intfdata(intf); | |
97d35f95 | 1414 | struct acm_wb *wb; |
1365baf7 | 1415 | int rv = 0; |
11ea859d | 1416 | int cnt; |
1365baf7 | 1417 | |
11ea859d ON |
1418 | spin_lock_irq(&acm->read_lock); |
1419 | acm->susp_count -= 1; | |
1420 | cnt = acm->susp_count; | |
1421 | spin_unlock_irq(&acm->read_lock); | |
1422 | ||
1423 | if (cnt) | |
1365baf7 ON |
1424 | return 0; |
1425 | ||
7fb57a01 | 1426 | if (test_bit(ASYNCB_INITIALIZED, &acm->port.flags)) { |
1365baf7 | 1427 | rv = usb_submit_urb(acm->ctrlurb, GFP_NOIO); |
97d35f95 ON |
1428 | |
1429 | spin_lock_irq(&acm->write_lock); | |
1430 | if (acm->delayed_wb) { | |
1431 | wb = acm->delayed_wb; | |
1432 | acm->delayed_wb = NULL; | |
1433 | spin_unlock_irq(&acm->write_lock); | |
f0730924 | 1434 | acm_start_wb(acm, wb); |
97d35f95 ON |
1435 | } else { |
1436 | spin_unlock_irq(&acm->write_lock); | |
1437 | } | |
1438 | ||
1439 | /* | |
1440 | * delayed error checking because we must | |
1441 | * do the write path at all cost | |
1442 | */ | |
1365baf7 | 1443 | if (rv < 0) |
11ea859d | 1444 | goto err_out; |
1365baf7 | 1445 | |
088c64f8 | 1446 | rv = acm_submit_read_urbs(acm, GFP_NOIO); |
1365baf7 ON |
1447 | } |
1448 | ||
1449 | err_out: | |
1365baf7 ON |
1450 | return rv; |
1451 | } | |
35758589 | 1452 | |
a91b0c50 FL |
1453 | static int acm_reset_resume(struct usb_interface *intf) |
1454 | { | |
1455 | struct acm *acm = usb_get_intfdata(intf); | |
1456 | struct tty_struct *tty; | |
1457 | ||
7fb57a01 | 1458 | if (test_bit(ASYNCB_INITIALIZED, &acm->port.flags)) { |
a91b0c50 FL |
1459 | tty = tty_port_tty_get(&acm->port); |
1460 | if (tty) { | |
1461 | tty_hangup(tty); | |
1462 | tty_kref_put(tty); | |
1463 | } | |
1464 | } | |
7fb57a01 | 1465 | |
a91b0c50 FL |
1466 | return acm_resume(intf); |
1467 | } | |
1468 | ||
35758589 | 1469 | #endif /* CONFIG_PM */ |
c1479a92 AT |
1470 | |
1471 | #define NOKIA_PCSUITE_ACM_INFO(x) \ | |
1472 | USB_DEVICE_AND_INTERFACE_INFO(0x0421, x, \ | |
1473 | USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, \ | |
1474 | USB_CDC_ACM_PROTO_VENDOR) | |
1475 | ||
4035e456 TG |
1476 | #define SAMSUNG_PCSUITE_ACM_INFO(x) \ |
1477 | USB_DEVICE_AND_INTERFACE_INFO(0x04e7, x, \ | |
1478 | USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, \ | |
1479 | USB_CDC_ACM_PROTO_VENDOR) | |
1480 | ||
1da177e4 LT |
1481 | /* |
1482 | * USB driver structure. | |
1483 | */ | |
1484 | ||
6ef4852b | 1485 | static const struct usb_device_id acm_ids[] = { |
1da177e4 LT |
1486 | /* quirky and broken devices */ |
1487 | { USB_DEVICE(0x0870, 0x0001), /* Metricom GS Modem */ | |
1488 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1489 | }, | |
b0e2a705 AA |
1490 | { USB_DEVICE(0x0e8d, 0x0003), /* FIREFLY, MediaTek Inc; andrey.arapov@gmail.com */ |
1491 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1492 | }, | |
0f9c7b4a AL |
1493 | { USB_DEVICE(0x0e8d, 0x3329), /* MediaTek Inc GPS */ |
1494 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1495 | }, | |
8753e65e MO |
1496 | { USB_DEVICE(0x0482, 0x0203), /* KYOCERA AH-K3001V */ |
1497 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1498 | }, | |
91a9c921 CM |
1499 | { USB_DEVICE(0x079b, 0x000f), /* BT On-Air USB MODEM */ |
1500 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1501 | }, | |
7abcf20b AC |
1502 | { USB_DEVICE(0x0ace, 0x1602), /* ZyDAS 56K USB MODEM */ |
1503 | .driver_info = SINGLE_RX_URB, | |
1504 | }, | |
86478944 ON |
1505 | { USB_DEVICE(0x0ace, 0x1608), /* ZyDAS 56K USB MODEM */ |
1506 | .driver_info = SINGLE_RX_URB, /* firmware bug */ | |
1507 | }, | |
3dd2ae81 ON |
1508 | { USB_DEVICE(0x0ace, 0x1611), /* ZyDAS 56K USB MODEM - new version */ |
1509 | .driver_info = SINGLE_RX_URB, /* firmware bug */ | |
1510 | }, | |
9be8456c ON |
1511 | { USB_DEVICE(0x22b8, 0x7000), /* Motorola Q Phone */ |
1512 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1513 | }, | |
6149ed5e IM |
1514 | { USB_DEVICE(0x0803, 0x3095), /* Zoom Telephonics Model 3095F USB MODEM */ |
1515 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1516 | }, | |
c8fd2c37 ES |
1517 | { USB_DEVICE(0x0572, 0x1321), /* Conexant USB MODEM CX93010 */ |
1518 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1519 | }, | |
c89c60e9 AC |
1520 | { USB_DEVICE(0x0572, 0x1324), /* Conexant USB MODEM RD02-D400 */ |
1521 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1522 | }, | |
cab98a0a XK |
1523 | { USB_DEVICE(0x0572, 0x1328), /* Shiro / Aztech USB MODEM UM-3100 */ |
1524 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1525 | }, | |
155df65a DT |
1526 | { USB_DEVICE(0x22b8, 0x6425), /* Motorola MOTOMAGX phones */ |
1527 | }, | |
6abff5dc KH |
1528 | /* Motorola H24 HSPA module: */ |
1529 | { USB_DEVICE(0x22b8, 0x2d91) }, /* modem */ | |
1530 | { USB_DEVICE(0x22b8, 0x2d92) }, /* modem + diagnostics */ | |
1531 | { USB_DEVICE(0x22b8, 0x2d93) }, /* modem + AT port */ | |
1532 | { USB_DEVICE(0x22b8, 0x2d95) }, /* modem + AT port + diagnostics */ | |
1533 | { USB_DEVICE(0x22b8, 0x2d96) }, /* modem + NMEA */ | |
1534 | { USB_DEVICE(0x22b8, 0x2d97) }, /* modem + diagnostics + NMEA */ | |
1535 | { USB_DEVICE(0x22b8, 0x2d99) }, /* modem + AT port + NMEA */ | |
1536 | { USB_DEVICE(0x22b8, 0x2d9a) }, /* modem + AT port + diagnostics + NMEA */ | |
1537 | ||
c332b4e1 AR |
1538 | { USB_DEVICE(0x0572, 0x1329), /* Hummingbird huc56s (Conexant) */ |
1539 | .driver_info = NO_UNION_NORMAL, /* union descriptor misplaced on | |
1540 | data interface instead of | |
1541 | communications interface. | |
1542 | Maybe we should define a new | |
1543 | quirk for this. */ | |
1544 | }, | |
1f17c502 KK |
1545 | { USB_DEVICE(0x1bbb, 0x0003), /* Alcatel OT-I650 */ |
1546 | .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */ | |
1547 | }, | |
c3baa19b RN |
1548 | { USB_DEVICE(0x1576, 0x03b1), /* Maretron USB100 */ |
1549 | .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */ | |
1550 | }, | |
9be8456c | 1551 | |
c1479a92 AT |
1552 | /* Nokia S60 phones expose two ACM channels. The first is |
1553 | * a modem and is picked up by the standard AT-command | |
1554 | * information below. The second is 'vendor-specific' but | |
1555 | * is treated as a serial device at the S60 end, so we want | |
1556 | * to expose it on Linux too. */ | |
1557 | { NOKIA_PCSUITE_ACM_INFO(0x042D), }, /* Nokia 3250 */ | |
1558 | { NOKIA_PCSUITE_ACM_INFO(0x04D8), }, /* Nokia 5500 Sport */ | |
1559 | { NOKIA_PCSUITE_ACM_INFO(0x04C9), }, /* Nokia E50 */ | |
1560 | { NOKIA_PCSUITE_ACM_INFO(0x0419), }, /* Nokia E60 */ | |
1561 | { NOKIA_PCSUITE_ACM_INFO(0x044D), }, /* Nokia E61 */ | |
1562 | { NOKIA_PCSUITE_ACM_INFO(0x0001), }, /* Nokia E61i */ | |
1563 | { NOKIA_PCSUITE_ACM_INFO(0x0475), }, /* Nokia E62 */ | |
1564 | { NOKIA_PCSUITE_ACM_INFO(0x0508), }, /* Nokia E65 */ | |
1565 | { NOKIA_PCSUITE_ACM_INFO(0x0418), }, /* Nokia E70 */ | |
1566 | { NOKIA_PCSUITE_ACM_INFO(0x0425), }, /* Nokia N71 */ | |
1567 | { NOKIA_PCSUITE_ACM_INFO(0x0486), }, /* Nokia N73 */ | |
1568 | { NOKIA_PCSUITE_ACM_INFO(0x04DF), }, /* Nokia N75 */ | |
1569 | { NOKIA_PCSUITE_ACM_INFO(0x000e), }, /* Nokia N77 */ | |
1570 | { NOKIA_PCSUITE_ACM_INFO(0x0445), }, /* Nokia N80 */ | |
1571 | { NOKIA_PCSUITE_ACM_INFO(0x042F), }, /* Nokia N91 & N91 8GB */ | |
1572 | { NOKIA_PCSUITE_ACM_INFO(0x048E), }, /* Nokia N92 */ | |
1573 | { NOKIA_PCSUITE_ACM_INFO(0x0420), }, /* Nokia N93 */ | |
1574 | { NOKIA_PCSUITE_ACM_INFO(0x04E6), }, /* Nokia N93i */ | |
1575 | { NOKIA_PCSUITE_ACM_INFO(0x04B2), }, /* Nokia 5700 XpressMusic */ | |
1576 | { NOKIA_PCSUITE_ACM_INFO(0x0134), }, /* Nokia 6110 Navigator (China) */ | |
1577 | { NOKIA_PCSUITE_ACM_INFO(0x046E), }, /* Nokia 6110 Navigator */ | |
1578 | { NOKIA_PCSUITE_ACM_INFO(0x002f), }, /* Nokia 6120 classic & */ | |
1579 | { NOKIA_PCSUITE_ACM_INFO(0x0088), }, /* Nokia 6121 classic */ | |
1580 | { NOKIA_PCSUITE_ACM_INFO(0x00fc), }, /* Nokia 6124 classic */ | |
1581 | { NOKIA_PCSUITE_ACM_INFO(0x0042), }, /* Nokia E51 */ | |
1582 | { NOKIA_PCSUITE_ACM_INFO(0x00b0), }, /* Nokia E66 */ | |
1583 | { NOKIA_PCSUITE_ACM_INFO(0x00ab), }, /* Nokia E71 */ | |
1584 | { NOKIA_PCSUITE_ACM_INFO(0x0481), }, /* Nokia N76 */ | |
1585 | { NOKIA_PCSUITE_ACM_INFO(0x0007), }, /* Nokia N81 & N81 8GB */ | |
1586 | { NOKIA_PCSUITE_ACM_INFO(0x0071), }, /* Nokia N82 */ | |
1587 | { NOKIA_PCSUITE_ACM_INFO(0x04F0), }, /* Nokia N95 & N95-3 NAM */ | |
1588 | { NOKIA_PCSUITE_ACM_INFO(0x0070), }, /* Nokia N95 8GB */ | |
1589 | { NOKIA_PCSUITE_ACM_INFO(0x00e9), }, /* Nokia 5320 XpressMusic */ | |
1590 | { NOKIA_PCSUITE_ACM_INFO(0x0099), }, /* Nokia 6210 Navigator, RM-367 */ | |
1591 | { NOKIA_PCSUITE_ACM_INFO(0x0128), }, /* Nokia 6210 Navigator, RM-419 */ | |
1592 | { NOKIA_PCSUITE_ACM_INFO(0x008f), }, /* Nokia 6220 Classic */ | |
1593 | { NOKIA_PCSUITE_ACM_INFO(0x00a0), }, /* Nokia 6650 */ | |
1594 | { NOKIA_PCSUITE_ACM_INFO(0x007b), }, /* Nokia N78 */ | |
1595 | { NOKIA_PCSUITE_ACM_INFO(0x0094), }, /* Nokia N85 */ | |
1596 | { NOKIA_PCSUITE_ACM_INFO(0x003a), }, /* Nokia N96 & N96-3 */ | |
1597 | { NOKIA_PCSUITE_ACM_INFO(0x00e9), }, /* Nokia 5320 XpressMusic */ | |
1598 | { NOKIA_PCSUITE_ACM_INFO(0x0108), }, /* Nokia 5320 XpressMusic 2G */ | |
1599 | { NOKIA_PCSUITE_ACM_INFO(0x01f5), }, /* Nokia N97, RM-505 */ | |
83a4eae9 | 1600 | { NOKIA_PCSUITE_ACM_INFO(0x02e3), }, /* Nokia 5230, RM-588 */ |
4035e456 TG |
1601 | { NOKIA_PCSUITE_ACM_INFO(0x0178), }, /* Nokia E63 */ |
1602 | { NOKIA_PCSUITE_ACM_INFO(0x010e), }, /* Nokia E75 */ | |
1603 | { NOKIA_PCSUITE_ACM_INFO(0x02d9), }, /* Nokia 6760 Slide */ | |
1604 | { NOKIA_PCSUITE_ACM_INFO(0x01d0), }, /* Nokia E52 */ | |
1605 | { NOKIA_PCSUITE_ACM_INFO(0x0223), }, /* Nokia E72 */ | |
1606 | { NOKIA_PCSUITE_ACM_INFO(0x0275), }, /* Nokia X6 */ | |
1607 | { NOKIA_PCSUITE_ACM_INFO(0x026c), }, /* Nokia N97 Mini */ | |
1608 | { NOKIA_PCSUITE_ACM_INFO(0x0154), }, /* Nokia 5800 XpressMusic */ | |
1609 | { NOKIA_PCSUITE_ACM_INFO(0x04ce), }, /* Nokia E90 */ | |
1610 | { NOKIA_PCSUITE_ACM_INFO(0x01d4), }, /* Nokia E55 */ | |
721d92fc | 1611 | { NOKIA_PCSUITE_ACM_INFO(0x0302), }, /* Nokia N8 */ |
4061fde2 TG |
1612 | { NOKIA_PCSUITE_ACM_INFO(0x0335), }, /* Nokia E7 */ |
1613 | { NOKIA_PCSUITE_ACM_INFO(0x03cd), }, /* Nokia C7 */ | |
4035e456 | 1614 | { SAMSUNG_PCSUITE_ACM_INFO(0x6651), }, /* Samsung GTi8510 (INNOV8) */ |
c1479a92 | 1615 | |
65e52f41 DP |
1616 | /* Support for Owen devices */ |
1617 | { USB_DEVICE(0x03eb, 0x0030), }, /* Owen SI30 */ | |
1618 | ||
c1479a92 AT |
1619 | /* NOTE: non-Nokia COMM/ACM/0xff is likely MSFT RNDIS... NOT a modem! */ |
1620 | ||
7c5d8c39 | 1621 | /* Support Lego NXT using pbLua firmware */ |
ce126644 JC |
1622 | { USB_DEVICE(0x0694, 0xff00), |
1623 | .driver_info = NOT_A_MODEM, | |
7893afc0 | 1624 | }, |
7c5d8c39 | 1625 | |
fd5054c1 ES |
1626 | /* Support for Droids MuIn LCD */ |
1627 | { USB_DEVICE(0x04d8, 0x000b), | |
1628 | .driver_info = NO_DATA_INTERFACE, | |
1629 | }, | |
1630 | ||
5b239f0a PC |
1631 | /* control interfaces without any protocol set */ |
1632 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
1633 | USB_CDC_PROTO_NONE) }, | |
1634 | ||
1da177e4 LT |
1635 | /* control interfaces with various AT-command sets */ |
1636 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
1637 | USB_CDC_ACM_PROTO_AT_V25TER) }, | |
1638 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
1639 | USB_CDC_ACM_PROTO_AT_PCCA101) }, | |
1640 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
1641 | USB_CDC_ACM_PROTO_AT_PCCA101_WAKE) }, | |
1642 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
1643 | USB_CDC_ACM_PROTO_AT_GSM) }, | |
1644 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
6e47e069 | 1645 | USB_CDC_ACM_PROTO_AT_3G) }, |
1da177e4 LT |
1646 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, |
1647 | USB_CDC_ACM_PROTO_AT_CDMA) }, | |
1648 | ||
1da177e4 LT |
1649 | { } |
1650 | }; | |
1651 | ||
6e47e069 | 1652 | MODULE_DEVICE_TABLE(usb, acm_ids); |
1da177e4 LT |
1653 | |
1654 | static struct usb_driver acm_driver = { | |
1da177e4 LT |
1655 | .name = "cdc_acm", |
1656 | .probe = acm_probe, | |
1657 | .disconnect = acm_disconnect, | |
35758589 | 1658 | #ifdef CONFIG_PM |
1365baf7 ON |
1659 | .suspend = acm_suspend, |
1660 | .resume = acm_resume, | |
a91b0c50 | 1661 | .reset_resume = acm_reset_resume, |
35758589 | 1662 | #endif |
1da177e4 | 1663 | .id_table = acm_ids, |
35758589 | 1664 | #ifdef CONFIG_PM |
1365baf7 | 1665 | .supports_autosuspend = 1, |
35758589 | 1666 | #endif |
e1f12eb6 | 1667 | .disable_hub_initiated_lpm = 1, |
1da177e4 LT |
1668 | }; |
1669 | ||
1670 | /* | |
1671 | * TTY driver structures. | |
1672 | */ | |
1673 | ||
b68e31d0 | 1674 | static const struct tty_operations acm_ops = { |
7fb57a01 | 1675 | .install = acm_tty_install, |
1da177e4 LT |
1676 | .open = acm_tty_open, |
1677 | .close = acm_tty_close, | |
7fb57a01 | 1678 | .cleanup = acm_tty_cleanup, |
10077d4a | 1679 | .hangup = acm_tty_hangup, |
1da177e4 LT |
1680 | .write = acm_tty_write, |
1681 | .write_room = acm_tty_write_room, | |
1682 | .ioctl = acm_tty_ioctl, | |
1683 | .throttle = acm_tty_throttle, | |
1684 | .unthrottle = acm_tty_unthrottle, | |
1685 | .chars_in_buffer = acm_tty_chars_in_buffer, | |
1686 | .break_ctl = acm_tty_break_ctl, | |
1687 | .set_termios = acm_tty_set_termios, | |
1688 | .tiocmget = acm_tty_tiocmget, | |
1689 | .tiocmset = acm_tty_tiocmset, | |
1690 | }; | |
1691 | ||
1692 | /* | |
1693 | * Init / exit. | |
1694 | */ | |
1695 | ||
1696 | static int __init acm_init(void) | |
1697 | { | |
1698 | int retval; | |
1699 | acm_tty_driver = alloc_tty_driver(ACM_TTY_MINORS); | |
1700 | if (!acm_tty_driver) | |
1701 | return -ENOMEM; | |
1da177e4 LT |
1702 | acm_tty_driver->driver_name = "acm", |
1703 | acm_tty_driver->name = "ttyACM", | |
1da177e4 LT |
1704 | acm_tty_driver->major = ACM_TTY_MAJOR, |
1705 | acm_tty_driver->minor_start = 0, | |
1706 | acm_tty_driver->type = TTY_DRIVER_TYPE_SERIAL, | |
1707 | acm_tty_driver->subtype = SERIAL_TYPE_NORMAL, | |
331b8319 | 1708 | acm_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; |
1da177e4 | 1709 | acm_tty_driver->init_termios = tty_std_termios; |
6e47e069 AC |
1710 | acm_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | |
1711 | HUPCL | CLOCAL; | |
1da177e4 LT |
1712 | tty_set_operations(acm_tty_driver, &acm_ops); |
1713 | ||
1714 | retval = tty_register_driver(acm_tty_driver); | |
1715 | if (retval) { | |
1716 | put_tty_driver(acm_tty_driver); | |
1717 | return retval; | |
1718 | } | |
1719 | ||
1720 | retval = usb_register(&acm_driver); | |
1721 | if (retval) { | |
1722 | tty_unregister_driver(acm_tty_driver); | |
1723 | put_tty_driver(acm_tty_driver); | |
1724 | return retval; | |
1725 | } | |
1726 | ||
a2c7b935 | 1727 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "\n"); |
1da177e4 LT |
1728 | |
1729 | return 0; | |
1730 | } | |
1731 | ||
1732 | static void __exit acm_exit(void) | |
1733 | { | |
1734 | usb_deregister(&acm_driver); | |
1735 | tty_unregister_driver(acm_tty_driver); | |
1736 | put_tty_driver(acm_tty_driver); | |
1737 | } | |
1738 | ||
1739 | module_init(acm_init); | |
1740 | module_exit(acm_exit); | |
1741 | ||
6e47e069 AC |
1742 | MODULE_AUTHOR(DRIVER_AUTHOR); |
1743 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 | 1744 | MODULE_LICENSE("GPL"); |
e766aeb8 | 1745 | MODULE_ALIAS_CHARDEV_MAJOR(ACM_TTY_MAJOR); |