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