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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> | |
5 | * Copyright (c) 1999 Pavel Machek <pavel@suse.cz> | |
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> |
1da177e4 LT |
10 | * |
11 | * USB Abstract Control Model driver for USB modems and ISDN adapters | |
12 | * | |
13 | * Sponsored by SuSE | |
14 | * | |
15 | * ChangeLog: | |
16 | * v0.9 - thorough cleaning, URBification, almost a rewrite | |
17 | * v0.10 - some more cleanups | |
18 | * v0.11 - fixed flow control, read error doesn't stop reads | |
19 | * v0.12 - added TIOCM ioctls, added break handling, made struct acm kmalloced | |
20 | * v0.13 - added termios, added hangup | |
21 | * v0.14 - sized down struct acm | |
22 | * v0.15 - fixed flow control again - characters could be lost | |
23 | * v0.16 - added code for modems with swapped data and control interfaces | |
24 | * v0.17 - added new style probing | |
25 | * v0.18 - fixed new style probing for devices with more configurations | |
26 | * v0.19 - fixed CLOCAL handling (thanks to Richard Shih-Ping Chan) | |
27 | * v0.20 - switched to probing on interface (rather than device) class | |
28 | * v0.21 - revert to probing on device for devices with multiple configs | |
29 | * v0.22 - probe only the control interface. if usbcore doesn't choose the | |
30 | * config we want, sysadmin changes bConfigurationValue in sysfs. | |
31 | * v0.23 - use softirq for rx processing, as needed by tty layer | |
32 | * v0.24 - change probe method to evaluate CDC union descriptor | |
61a87adf | 33 | * v0.25 - downstream tasks paralelized to maximize throughput |
e4cf3aa8 | 34 | * v0.26 - multiple write urbs, writesize increased |
1da177e4 LT |
35 | */ |
36 | ||
37 | /* | |
38 | * This program is free software; you can redistribute it and/or modify | |
39 | * it under the terms of the GNU General Public License as published by | |
40 | * the Free Software Foundation; either version 2 of the License, or | |
41 | * (at your option) any later version. | |
42 | * | |
43 | * This program is distributed in the hope that it will be useful, | |
44 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
45 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
46 | * GNU General Public License for more details. | |
47 | * | |
48 | * You should have received a copy of the GNU General Public License | |
49 | * along with this program; if not, write to the Free Software | |
50 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
51 | */ | |
52 | ||
53 | #undef DEBUG | |
e5fbab51 | 54 | #undef VERBOSE_DEBUG |
1da177e4 LT |
55 | |
56 | #include <linux/kernel.h> | |
57 | #include <linux/errno.h> | |
58 | #include <linux/init.h> | |
59 | #include <linux/slab.h> | |
60 | #include <linux/tty.h> | |
61 | #include <linux/tty_driver.h> | |
62 | #include <linux/tty_flip.h> | |
63 | #include <linux/module.h> | |
4186ecf8 | 64 | #include <linux/mutex.h> |
1da177e4 LT |
65 | #include <asm/uaccess.h> |
66 | #include <linux/usb.h> | |
a8c28f23 | 67 | #include <linux/usb/cdc.h> |
1da177e4 LT |
68 | #include <asm/byteorder.h> |
69 | #include <asm/unaligned.h> | |
61a87adf | 70 | #include <linux/list.h> |
1da177e4 LT |
71 | |
72 | #include "cdc-acm.h" | |
73 | ||
e5fbab51 DB |
74 | |
75 | #define ACM_CLOSE_TIMEOUT 15 /* seconds to let writes drain */ | |
76 | ||
1da177e4 LT |
77 | /* |
78 | * Version Information | |
79 | */ | |
e4cf3aa8 | 80 | #define DRIVER_VERSION "v0.26" |
61a87adf | 81 | #define DRIVER_AUTHOR "Armin Fuerst, Pavel Machek, Johannes Erdfelt, Vojtech Pavlik, David Kubicek" |
1da177e4 LT |
82 | #define DRIVER_DESC "USB Abstract Control Model driver for USB modems and ISDN adapters" |
83 | ||
84 | static struct usb_driver acm_driver; | |
85 | static struct tty_driver *acm_tty_driver; | |
86 | static struct acm *acm_table[ACM_TTY_MINORS]; | |
87 | ||
4186ecf8 | 88 | static DEFINE_MUTEX(open_mutex); |
1da177e4 LT |
89 | |
90 | #define ACM_READY(acm) (acm && acm->dev && acm->used) | |
91 | ||
e5fbab51 DB |
92 | #ifdef VERBOSE_DEBUG |
93 | #define verbose 1 | |
94 | #else | |
95 | #define verbose 0 | |
96 | #endif | |
97 | ||
1da177e4 LT |
98 | /* |
99 | * Functions for ACM control messages. | |
100 | */ | |
101 | ||
102 | static int acm_ctrl_msg(struct acm *acm, int request, int value, void *buf, int len) | |
103 | { | |
104 | int retval = usb_control_msg(acm->dev, usb_sndctrlpipe(acm->dev, 0), | |
105 | request, USB_RT_ACM, value, | |
106 | acm->control->altsetting[0].desc.bInterfaceNumber, | |
107 | buf, len, 5000); | |
108 | dbg("acm_control_msg: rq: 0x%02x val: %#x len: %#x result: %d", request, value, len, retval); | |
109 | return retval < 0 ? retval : 0; | |
110 | } | |
111 | ||
112 | /* devices aren't required to support these requests. | |
113 | * the cdc acm descriptor tells whether they do... | |
114 | */ | |
115 | #define acm_set_control(acm, control) \ | |
116 | acm_ctrl_msg(acm, USB_CDC_REQ_SET_CONTROL_LINE_STATE, control, NULL, 0) | |
117 | #define acm_set_line(acm, line) \ | |
118 | acm_ctrl_msg(acm, USB_CDC_REQ_SET_LINE_CODING, 0, line, sizeof *(line)) | |
119 | #define acm_send_break(acm, ms) \ | |
120 | acm_ctrl_msg(acm, USB_CDC_REQ_SEND_BREAK, ms, NULL, 0) | |
121 | ||
884b600f ON |
122 | /* |
123 | * Write buffer management. | |
124 | * All of these assume proper locks taken by the caller. | |
125 | */ | |
126 | ||
127 | static int acm_wb_alloc(struct acm *acm) | |
128 | { | |
129 | int i, wbn; | |
130 | struct acm_wb *wb; | |
131 | ||
e4cf3aa8 | 132 | wbn = 0; |
884b600f ON |
133 | i = 0; |
134 | for (;;) { | |
135 | wb = &acm->wb[wbn]; | |
136 | if (!wb->use) { | |
137 | wb->use = 1; | |
138 | return wbn; | |
139 | } | |
86478944 ON |
140 | wbn = (wbn + 1) % ACM_NW; |
141 | if (++i >= ACM_NW) | |
884b600f ON |
142 | return -1; |
143 | } | |
144 | } | |
145 | ||
884b600f ON |
146 | static int acm_wb_is_avail(struct acm *acm) |
147 | { | |
148 | int i, n; | |
e5fbab51 | 149 | unsigned long flags; |
884b600f | 150 | |
86478944 | 151 | n = ACM_NW; |
e5fbab51 | 152 | spin_lock_irqsave(&acm->write_lock, flags); |
86478944 ON |
153 | for (i = 0; i < ACM_NW; i++) { |
154 | n -= acm->wb[i].use; | |
884b600f | 155 | } |
e5fbab51 | 156 | spin_unlock_irqrestore(&acm->write_lock, flags); |
884b600f ON |
157 | return n; |
158 | } | |
159 | ||
884b600f | 160 | /* |
ad0b65ef | 161 | * Finish write. Caller must hold acm->write_lock |
884b600f | 162 | */ |
e4cf3aa8 | 163 | static void acm_write_done(struct acm *acm, struct acm_wb *wb) |
884b600f | 164 | { |
e4cf3aa8 | 165 | wb->use = 0; |
11ea859d | 166 | acm->transmitting--; |
884b600f ON |
167 | } |
168 | ||
169 | /* | |
170 | * Poke write. | |
11ea859d ON |
171 | * |
172 | * the caller is responsible for locking | |
884b600f | 173 | */ |
11ea859d ON |
174 | |
175 | static int acm_start_wb(struct acm *acm, struct acm_wb *wb) | |
176 | { | |
177 | int rc; | |
178 | ||
179 | acm->transmitting++; | |
180 | ||
181 | wb->urb->transfer_buffer = wb->buf; | |
182 | wb->urb->transfer_dma = wb->dmah; | |
183 | wb->urb->transfer_buffer_length = wb->len; | |
184 | wb->urb->dev = acm->dev; | |
185 | ||
186 | if ((rc = usb_submit_urb(wb->urb, GFP_ATOMIC)) < 0) { | |
187 | dbg("usb_submit_urb(write bulk) failed: %d", rc); | |
188 | acm_write_done(acm, wb); | |
189 | } | |
190 | return rc; | |
191 | } | |
192 | ||
e4cf3aa8 | 193 | static int acm_write_start(struct acm *acm, int wbn) |
884b600f ON |
194 | { |
195 | unsigned long flags; | |
934da463 | 196 | struct acm_wb *wb = &acm->wb[wbn]; |
884b600f ON |
197 | int rc; |
198 | ||
199 | spin_lock_irqsave(&acm->write_lock, flags); | |
200 | if (!acm->dev) { | |
934da463 | 201 | wb->use = 0; |
884b600f ON |
202 | spin_unlock_irqrestore(&acm->write_lock, flags); |
203 | return -ENODEV; | |
204 | } | |
205 | ||
11ea859d ON |
206 | dbg("%s susp_count: %d", __func__, acm->susp_count); |
207 | if (acm->susp_count) { | |
11ea859d | 208 | acm->delayed_wb = wb; |
11ea859d ON |
209 | schedule_work(&acm->waker); |
210 | spin_unlock_irqrestore(&acm->write_lock, flags); | |
211 | return 0; /* A white lie */ | |
212 | } | |
213 | usb_mark_last_busy(acm->dev); | |
214 | ||
11ea859d | 215 | rc = acm_start_wb(acm, wb); |
884b600f ON |
216 | spin_unlock_irqrestore(&acm->write_lock, flags); |
217 | ||
884b600f | 218 | return rc; |
11ea859d | 219 | |
884b600f | 220 | } |
c4cabd28 ON |
221 | /* |
222 | * attributes exported through sysfs | |
223 | */ | |
224 | static ssize_t show_caps | |
225 | (struct device *dev, struct device_attribute *attr, char *buf) | |
226 | { | |
227 | struct usb_interface *intf = to_usb_interface(dev); | |
228 | struct acm *acm = usb_get_intfdata(intf); | |
229 | ||
230 | return sprintf(buf, "%d", acm->ctrl_caps); | |
231 | } | |
232 | static DEVICE_ATTR(bmCapabilities, S_IRUGO, show_caps, NULL); | |
233 | ||
234 | static ssize_t show_country_codes | |
235 | (struct device *dev, struct device_attribute *attr, char *buf) | |
236 | { | |
237 | struct usb_interface *intf = to_usb_interface(dev); | |
238 | struct acm *acm = usb_get_intfdata(intf); | |
239 | ||
240 | memcpy(buf, acm->country_codes, acm->country_code_size); | |
241 | return acm->country_code_size; | |
242 | } | |
243 | ||
244 | static DEVICE_ATTR(wCountryCodes, S_IRUGO, show_country_codes, NULL); | |
245 | ||
246 | static ssize_t show_country_rel_date | |
247 | (struct device *dev, struct device_attribute *attr, char *buf) | |
248 | { | |
249 | struct usb_interface *intf = to_usb_interface(dev); | |
250 | struct acm *acm = usb_get_intfdata(intf); | |
251 | ||
252 | return sprintf(buf, "%d", acm->country_rel_date); | |
253 | } | |
884b600f | 254 | |
c4cabd28 | 255 | static DEVICE_ATTR(iCountryCodeRelDate, S_IRUGO, show_country_rel_date, NULL); |
1da177e4 LT |
256 | /* |
257 | * Interrupt handlers for various ACM device responses | |
258 | */ | |
259 | ||
260 | /* control interface reports status changes with "interrupt" transfers */ | |
7d12e780 | 261 | static void acm_ctrl_irq(struct urb *urb) |
1da177e4 LT |
262 | { |
263 | struct acm *acm = urb->context; | |
264 | struct usb_cdc_notification *dr = urb->transfer_buffer; | |
265 | unsigned char *data; | |
266 | int newctrl; | |
185d4058 GKH |
267 | int retval; |
268 | int status = urb->status; | |
1da177e4 | 269 | |
185d4058 | 270 | switch (status) { |
1da177e4 LT |
271 | case 0: |
272 | /* success */ | |
273 | break; | |
274 | case -ECONNRESET: | |
275 | case -ENOENT: | |
276 | case -ESHUTDOWN: | |
277 | /* this urb is terminated, clean up */ | |
441b62c1 | 278 | dbg("%s - urb shutting down with status: %d", __func__, status); |
1da177e4 LT |
279 | return; |
280 | default: | |
441b62c1 | 281 | dbg("%s - nonzero urb status received: %d", __func__, status); |
1da177e4 LT |
282 | goto exit; |
283 | } | |
284 | ||
285 | if (!ACM_READY(acm)) | |
286 | goto exit; | |
287 | ||
288 | data = (unsigned char *)(dr + 1); | |
289 | switch (dr->bNotificationType) { | |
290 | ||
291 | case USB_CDC_NOTIFY_NETWORK_CONNECTION: | |
292 | ||
293 | dbg("%s network", dr->wValue ? "connected to" : "disconnected from"); | |
294 | break; | |
295 | ||
296 | case USB_CDC_NOTIFY_SERIAL_STATE: | |
297 | ||
a5abdeaf | 298 | newctrl = get_unaligned_le16(data); |
1da177e4 LT |
299 | |
300 | if (acm->tty && !acm->clocal && (acm->ctrlin & ~newctrl & ACM_CTRL_DCD)) { | |
301 | dbg("calling hangup"); | |
302 | tty_hangup(acm->tty); | |
303 | } | |
304 | ||
305 | acm->ctrlin = newctrl; | |
306 | ||
307 | dbg("input control lines: dcd%c dsr%c break%c ring%c framing%c parity%c overrun%c", | |
308 | acm->ctrlin & ACM_CTRL_DCD ? '+' : '-', acm->ctrlin & ACM_CTRL_DSR ? '+' : '-', | |
309 | acm->ctrlin & ACM_CTRL_BRK ? '+' : '-', acm->ctrlin & ACM_CTRL_RI ? '+' : '-', | |
310 | acm->ctrlin & ACM_CTRL_FRAMING ? '+' : '-', acm->ctrlin & ACM_CTRL_PARITY ? '+' : '-', | |
311 | acm->ctrlin & ACM_CTRL_OVERRUN ? '+' : '-'); | |
312 | ||
313 | break; | |
314 | ||
315 | default: | |
316 | dbg("unknown notification %d received: index %d len %d data0 %d data1 %d", | |
317 | dr->bNotificationType, dr->wIndex, | |
318 | dr->wLength, data[0], data[1]); | |
319 | break; | |
320 | } | |
321 | exit: | |
11ea859d | 322 | usb_mark_last_busy(acm->dev); |
185d4058 GKH |
323 | retval = usb_submit_urb (urb, GFP_ATOMIC); |
324 | if (retval) | |
9908a32e GKH |
325 | dev_err(&urb->dev->dev, "%s - usb_submit_urb failed with " |
326 | "result %d", __func__, retval); | |
1da177e4 LT |
327 | } |
328 | ||
329 | /* data interface returns incoming bytes, or we got unthrottled */ | |
7d12e780 | 330 | static void acm_read_bulk(struct urb *urb) |
1da177e4 | 331 | { |
61a87adf DK |
332 | struct acm_rb *buf; |
333 | struct acm_ru *rcv = urb->context; | |
334 | struct acm *acm = rcv->instance; | |
86478944 | 335 | int status = urb->status; |
185d4058 GKH |
336 | |
337 | dbg("Entering acm_read_bulk with status %d", status); | |
1da177e4 | 338 | |
11ea859d ON |
339 | if (!ACM_READY(acm)) { |
340 | dev_dbg(&acm->data->dev, "Aborting, acm not ready"); | |
1da177e4 | 341 | return; |
11ea859d ON |
342 | } |
343 | usb_mark_last_busy(acm->dev); | |
1da177e4 | 344 | |
86478944 | 345 | if (status) |
898eb71c | 346 | dev_dbg(&acm->data->dev, "bulk rx status %d\n", status); |
1da177e4 | 347 | |
61a87adf DK |
348 | buf = rcv->buffer; |
349 | buf->size = urb->actual_length; | |
350 | ||
86478944 ON |
351 | if (likely(status == 0)) { |
352 | spin_lock(&acm->read_lock); | |
11ea859d | 353 | acm->processing++; |
86478944 ON |
354 | list_add_tail(&rcv->list, &acm->spare_read_urbs); |
355 | list_add_tail(&buf->list, &acm->filled_read_bufs); | |
356 | spin_unlock(&acm->read_lock); | |
357 | } else { | |
358 | /* we drop the buffer due to an error */ | |
359 | spin_lock(&acm->read_lock); | |
360 | list_add_tail(&rcv->list, &acm->spare_read_urbs); | |
361 | list_add(&buf->list, &acm->spare_read_bufs); | |
362 | spin_unlock(&acm->read_lock); | |
363 | /* nevertheless the tasklet must be kicked unconditionally | |
364 | so the queue cannot dry up */ | |
365 | } | |
11ea859d ON |
366 | if (likely(!acm->susp_count)) |
367 | tasklet_schedule(&acm->urb_task); | |
1da177e4 LT |
368 | } |
369 | ||
370 | static void acm_rx_tasklet(unsigned long _acm) | |
371 | { | |
372 | struct acm *acm = (void *)_acm; | |
61a87adf | 373 | struct acm_rb *buf; |
1da177e4 | 374 | struct tty_struct *tty = acm->tty; |
61a87adf | 375 | struct acm_ru *rcv; |
762f007b | 376 | unsigned long flags; |
ca79b7b4 | 377 | unsigned char throttled; |
11ea859d | 378 | |
1da177e4 LT |
379 | dbg("Entering acm_rx_tasklet"); |
380 | ||
ca79b7b4 | 381 | if (!ACM_READY(acm)) |
11ea859d ON |
382 | { |
383 | dbg("acm_rx_tasklet: ACM not ready"); | |
ca79b7b4 | 384 | return; |
11ea859d | 385 | } |
ca79b7b4 | 386 | |
834dbca5 | 387 | spin_lock_irqsave(&acm->throttle_lock, flags); |
ca79b7b4 | 388 | throttled = acm->throttle; |
834dbca5 | 389 | spin_unlock_irqrestore(&acm->throttle_lock, flags); |
ca79b7b4 | 390 | if (throttled) |
11ea859d ON |
391 | { |
392 | dbg("acm_rx_tasklet: throttled"); | |
61a87adf | 393 | return; |
11ea859d | 394 | } |
61a87adf DK |
395 | |
396 | next_buffer: | |
762f007b | 397 | spin_lock_irqsave(&acm->read_lock, flags); |
61a87adf | 398 | if (list_empty(&acm->filled_read_bufs)) { |
762f007b | 399 | spin_unlock_irqrestore(&acm->read_lock, flags); |
61a87adf | 400 | goto urbs; |
1da177e4 | 401 | } |
61a87adf DK |
402 | buf = list_entry(acm->filled_read_bufs.next, |
403 | struct acm_rb, list); | |
404 | list_del(&buf->list); | |
762f007b | 405 | spin_unlock_irqrestore(&acm->read_lock, flags); |
61a87adf | 406 | |
3dd2ae81 | 407 | dbg("acm_rx_tasklet: procesing buf 0x%p, size = %d", buf, buf->size); |
61a87adf | 408 | |
33f0f88f | 409 | tty_buffer_request_room(tty, buf->size); |
834dbca5 | 410 | spin_lock_irqsave(&acm->throttle_lock, flags); |
ca79b7b4 | 411 | throttled = acm->throttle; |
834dbca5 | 412 | spin_unlock_irqrestore(&acm->throttle_lock, flags); |
ca79b7b4 | 413 | if (!throttled) |
33f0f88f | 414 | tty_insert_flip_string(tty, buf->base, buf->size); |
61a87adf | 415 | tty_flip_buffer_push(tty); |
1da177e4 | 416 | |
ca79b7b4 ON |
417 | if (throttled) { |
418 | dbg("Throttling noticed"); | |
762f007b | 419 | spin_lock_irqsave(&acm->read_lock, flags); |
61a87adf | 420 | list_add(&buf->list, &acm->filled_read_bufs); |
762f007b | 421 | spin_unlock_irqrestore(&acm->read_lock, flags); |
1da177e4 LT |
422 | return; |
423 | } | |
1da177e4 | 424 | |
762f007b | 425 | spin_lock_irqsave(&acm->read_lock, flags); |
61a87adf | 426 | list_add(&buf->list, &acm->spare_read_bufs); |
762f007b | 427 | spin_unlock_irqrestore(&acm->read_lock, flags); |
61a87adf DK |
428 | goto next_buffer; |
429 | ||
430 | urbs: | |
431 | while (!list_empty(&acm->spare_read_bufs)) { | |
762f007b | 432 | spin_lock_irqsave(&acm->read_lock, flags); |
61a87adf | 433 | if (list_empty(&acm->spare_read_urbs)) { |
11ea859d | 434 | acm->processing = 0; |
762f007b | 435 | spin_unlock_irqrestore(&acm->read_lock, flags); |
61a87adf DK |
436 | return; |
437 | } | |
438 | rcv = list_entry(acm->spare_read_urbs.next, | |
439 | struct acm_ru, list); | |
440 | list_del(&rcv->list); | |
762f007b | 441 | spin_unlock_irqrestore(&acm->read_lock, flags); |
61a87adf DK |
442 | |
443 | buf = list_entry(acm->spare_read_bufs.next, | |
444 | struct acm_rb, list); | |
445 | list_del(&buf->list); | |
446 | ||
447 | rcv->buffer = buf; | |
448 | ||
449 | usb_fill_bulk_urb(rcv->urb, acm->dev, | |
450 | acm->rx_endpoint, | |
451 | buf->base, | |
452 | acm->readsize, | |
453 | acm_read_bulk, rcv); | |
454 | rcv->urb->transfer_dma = buf->dma; | |
455 | rcv->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
456 | ||
61a87adf DK |
457 | /* This shouldn't kill the driver as unsuccessful URBs are returned to the |
458 | free-urbs-pool and resubmited ASAP */ | |
11ea859d ON |
459 | spin_lock_irqsave(&acm->read_lock, flags); |
460 | if (acm->susp_count || usb_submit_urb(rcv->urb, GFP_ATOMIC) < 0) { | |
61a87adf | 461 | list_add(&buf->list, &acm->spare_read_bufs); |
61a87adf | 462 | list_add(&rcv->list, &acm->spare_read_urbs); |
11ea859d | 463 | acm->processing = 0; |
762f007b | 464 | spin_unlock_irqrestore(&acm->read_lock, flags); |
61a87adf | 465 | return; |
11ea859d ON |
466 | } else { |
467 | spin_unlock_irqrestore(&acm->read_lock, flags); | |
468 | dbg("acm_rx_tasklet: sending urb 0x%p, rcv 0x%p, buf 0x%p", rcv->urb, rcv, buf); | |
61a87adf DK |
469 | } |
470 | } | |
11ea859d ON |
471 | spin_lock_irqsave(&acm->read_lock, flags); |
472 | acm->processing = 0; | |
473 | spin_unlock_irqrestore(&acm->read_lock, flags); | |
1da177e4 LT |
474 | } |
475 | ||
476 | /* data interface wrote those outgoing bytes */ | |
7d12e780 | 477 | static void acm_write_bulk(struct urb *urb) |
1da177e4 | 478 | { |
cdc97792 | 479 | struct acm_wb *wb = urb->context; |
e5fbab51 | 480 | struct acm *acm = wb->instance; |
ad0b65ef | 481 | unsigned long flags; |
1da177e4 | 482 | |
e5fbab51 DB |
483 | if (verbose || urb->status |
484 | || (urb->actual_length != urb->transfer_buffer_length)) | |
485 | dev_dbg(&acm->data->dev, "tx %d/%d bytes -- > %d\n", | |
486 | urb->actual_length, | |
487 | urb->transfer_buffer_length, | |
488 | urb->status); | |
1da177e4 | 489 | |
ad0b65ef | 490 | spin_lock_irqsave(&acm->write_lock, flags); |
e4cf3aa8 | 491 | acm_write_done(acm, wb); |
ad0b65ef | 492 | spin_unlock_irqrestore(&acm->write_lock, flags); |
884b600f ON |
493 | if (ACM_READY(acm)) |
494 | schedule_work(&acm->work); | |
e5fbab51 DB |
495 | else |
496 | wake_up_interruptible(&acm->drain_wait); | |
1da177e4 LT |
497 | } |
498 | ||
c4028958 | 499 | static void acm_softint(struct work_struct *work) |
1da177e4 | 500 | { |
c4028958 | 501 | struct acm *acm = container_of(work, struct acm, work); |
e5fbab51 DB |
502 | |
503 | dev_vdbg(&acm->data->dev, "tx work\n"); | |
1da177e4 LT |
504 | if (!ACM_READY(acm)) |
505 | return; | |
506 | tty_wakeup(acm->tty); | |
507 | } | |
508 | ||
11ea859d ON |
509 | static void acm_waker(struct work_struct *waker) |
510 | { | |
511 | struct acm *acm = container_of(waker, struct acm, waker); | |
11ea859d ON |
512 | int rv; |
513 | ||
514 | rv = usb_autopm_get_interface(acm->control); | |
515 | if (rv < 0) { | |
9908a32e | 516 | dev_err(&acm->dev->dev, "Autopm failure in %s\n", __func__); |
11ea859d ON |
517 | return; |
518 | } | |
519 | if (acm->delayed_wb) { | |
520 | acm_start_wb(acm, acm->delayed_wb); | |
521 | acm->delayed_wb = NULL; | |
522 | } | |
11ea859d ON |
523 | usb_autopm_put_interface(acm->control); |
524 | } | |
525 | ||
1da177e4 LT |
526 | /* |
527 | * TTY handlers | |
528 | */ | |
529 | ||
530 | static int acm_tty_open(struct tty_struct *tty, struct file *filp) | |
531 | { | |
532 | struct acm *acm; | |
533 | int rv = -EINVAL; | |
61a87adf | 534 | int i; |
3dd2ae81 | 535 | dbg("Entering acm_tty_open."); |
4186ecf8 AV |
536 | |
537 | mutex_lock(&open_mutex); | |
1da177e4 LT |
538 | |
539 | acm = acm_table[tty->index]; | |
540 | if (!acm || !acm->dev) | |
541 | goto err_out; | |
542 | else | |
543 | rv = 0; | |
544 | ||
28d1dfad | 545 | set_bit(TTY_NO_WRITE_SPLIT, &tty->flags); |
1da177e4 LT |
546 | tty->driver_data = acm; |
547 | acm->tty = tty; | |
548 | ||
61a87adf DK |
549 | /* force low_latency on so that our tty_push actually forces the data through, |
550 | otherwise it is scheduled, and with high data rates data can get lost. */ | |
551 | tty->low_latency = 1; | |
1da177e4 | 552 | |
94409cc1 ON |
553 | if (usb_autopm_get_interface(acm->control) < 0) |
554 | goto early_bail; | |
11ea859d ON |
555 | else |
556 | acm->control->needs_remote_wakeup = 1; | |
1365baf7 ON |
557 | |
558 | mutex_lock(&acm->mutex); | |
1da177e4 | 559 | if (acm->used++) { |
1365baf7 | 560 | usb_autopm_put_interface(acm->control); |
1da177e4 LT |
561 | goto done; |
562 | } | |
563 | ||
1365baf7 | 564 | |
1da177e4 LT |
565 | acm->ctrlurb->dev = acm->dev; |
566 | if (usb_submit_urb(acm->ctrlurb, GFP_KERNEL)) { | |
567 | dbg("usb_submit_urb(ctrl irq) failed"); | |
568 | goto bail_out; | |
569 | } | |
570 | ||
ca79b7b4 ON |
571 | if (0 > acm_set_control(acm, acm->ctrlout = ACM_CTRL_DTR | ACM_CTRL_RTS) && |
572 | (acm->ctrl_caps & USB_CDC_CAP_LINE)) | |
1da177e4 | 573 | goto full_bailout; |
11ea859d | 574 | usb_autopm_put_interface(acm->control); |
1da177e4 | 575 | |
61a87adf DK |
576 | INIT_LIST_HEAD(&acm->spare_read_urbs); |
577 | INIT_LIST_HEAD(&acm->spare_read_bufs); | |
578 | INIT_LIST_HEAD(&acm->filled_read_bufs); | |
86478944 | 579 | for (i = 0; i < acm->rx_buflimit; i++) { |
61a87adf DK |
580 | list_add(&(acm->ru[i].list), &acm->spare_read_urbs); |
581 | } | |
86478944 | 582 | for (i = 0; i < acm->rx_buflimit; i++) { |
61a87adf DK |
583 | list_add(&(acm->rb[i].list), &acm->spare_read_bufs); |
584 | } | |
585 | ||
ca79b7b4 ON |
586 | acm->throttle = 0; |
587 | ||
61a87adf | 588 | tasklet_schedule(&acm->urb_task); |
1da177e4 LT |
589 | |
590 | done: | |
1365baf7 | 591 | mutex_unlock(&acm->mutex); |
74573ee7 | 592 | err_out: |
94409cc1 | 593 | mutex_unlock(&open_mutex); |
1da177e4 LT |
594 | return rv; |
595 | ||
596 | full_bailout: | |
1da177e4 LT |
597 | usb_kill_urb(acm->ctrlurb); |
598 | bail_out: | |
1365baf7 | 599 | usb_autopm_put_interface(acm->control); |
1da177e4 | 600 | acm->used--; |
1365baf7 | 601 | mutex_unlock(&acm->mutex); |
94409cc1 ON |
602 | early_bail: |
603 | mutex_unlock(&open_mutex); | |
1da177e4 LT |
604 | return -EIO; |
605 | } | |
606 | ||
83ef344a | 607 | static void acm_tty_unregister(struct acm *acm) |
608 | { | |
86478944 | 609 | int i,nr; |
61a87adf | 610 | |
86478944 | 611 | nr = acm->rx_buflimit; |
83ef344a | 612 | tty_unregister_device(acm_tty_driver, acm->minor); |
613 | usb_put_intf(acm->control); | |
614 | acm_table[acm->minor] = NULL; | |
615 | usb_free_urb(acm->ctrlurb); | |
e4cf3aa8 DE |
616 | for (i = 0; i < ACM_NW; i++) |
617 | usb_free_urb(acm->wb[i].urb); | |
86478944 | 618 | for (i = 0; i < nr; i++) |
61a87adf | 619 | usb_free_urb(acm->ru[i].urb); |
c4cabd28 | 620 | kfree(acm->country_codes); |
83ef344a | 621 | kfree(acm); |
622 | } | |
623 | ||
e5fbab51 DB |
624 | static int acm_tty_chars_in_buffer(struct tty_struct *tty); |
625 | ||
1da177e4 LT |
626 | static void acm_tty_close(struct tty_struct *tty, struct file *filp) |
627 | { | |
628 | struct acm *acm = tty->driver_data; | |
86478944 | 629 | int i,nr; |
1da177e4 LT |
630 | |
631 | if (!acm || !acm->used) | |
632 | return; | |
633 | ||
86478944 | 634 | nr = acm->rx_buflimit; |
4186ecf8 | 635 | mutex_lock(&open_mutex); |
1da177e4 LT |
636 | if (!--acm->used) { |
637 | if (acm->dev) { | |
11ea859d | 638 | usb_autopm_get_interface(acm->control); |
1da177e4 | 639 | acm_set_control(acm, acm->ctrlout = 0); |
e5fbab51 DB |
640 | |
641 | /* try letting the last writes drain naturally */ | |
642 | wait_event_interruptible_timeout(acm->drain_wait, | |
643 | (ACM_NW == acm_wb_is_avail(acm)) | |
644 | || !acm->dev, | |
645 | ACM_CLOSE_TIMEOUT * HZ); | |
646 | ||
1da177e4 | 647 | usb_kill_urb(acm->ctrlurb); |
e4cf3aa8 DE |
648 | for (i = 0; i < ACM_NW; i++) |
649 | usb_kill_urb(acm->wb[i].urb); | |
86478944 | 650 | for (i = 0; i < nr; i++) |
61a87adf | 651 | usb_kill_urb(acm->ru[i].urb); |
11ea859d | 652 | acm->control->needs_remote_wakeup = 0; |
1365baf7 | 653 | usb_autopm_put_interface(acm->control); |
83ef344a | 654 | } else |
655 | acm_tty_unregister(acm); | |
1da177e4 | 656 | } |
4186ecf8 | 657 | mutex_unlock(&open_mutex); |
1da177e4 LT |
658 | } |
659 | ||
660 | static int acm_tty_write(struct tty_struct *tty, const unsigned char *buf, int count) | |
661 | { | |
662 | struct acm *acm = tty->driver_data; | |
663 | int stat; | |
884b600f ON |
664 | unsigned long flags; |
665 | int wbn; | |
666 | struct acm_wb *wb; | |
667 | ||
3dd2ae81 | 668 | dbg("Entering acm_tty_write to write %d bytes,", count); |
1da177e4 LT |
669 | |
670 | if (!ACM_READY(acm)) | |
671 | return -EINVAL; | |
1da177e4 LT |
672 | if (!count) |
673 | return 0; | |
674 | ||
884b600f ON |
675 | spin_lock_irqsave(&acm->write_lock, flags); |
676 | if ((wbn = acm_wb_alloc(acm)) < 0) { | |
677 | spin_unlock_irqrestore(&acm->write_lock, flags); | |
884b600f ON |
678 | return 0; |
679 | } | |
680 | wb = &acm->wb[wbn]; | |
1da177e4 | 681 | |
884b600f | 682 | count = (count > acm->writesize) ? acm->writesize : count; |
1da177e4 | 683 | dbg("Get %d bytes...", count); |
884b600f ON |
684 | memcpy(wb->buf, buf, count); |
685 | wb->len = count; | |
686 | spin_unlock_irqrestore(&acm->write_lock, flags); | |
1da177e4 | 687 | |
e4cf3aa8 | 688 | if ((stat = acm_write_start(acm, wbn)) < 0) |
1da177e4 | 689 | return stat; |
1da177e4 LT |
690 | return count; |
691 | } | |
692 | ||
693 | static int acm_tty_write_room(struct tty_struct *tty) | |
694 | { | |
695 | struct acm *acm = tty->driver_data; | |
696 | if (!ACM_READY(acm)) | |
697 | return -EINVAL; | |
884b600f ON |
698 | /* |
699 | * Do not let the line discipline to know that we have a reserve, | |
700 | * or it might get too enthusiastic. | |
701 | */ | |
934da463 | 702 | return acm_wb_is_avail(acm) ? acm->writesize : 0; |
1da177e4 LT |
703 | } |
704 | ||
705 | static int acm_tty_chars_in_buffer(struct tty_struct *tty) | |
706 | { | |
707 | struct acm *acm = tty->driver_data; | |
708 | if (!ACM_READY(acm)) | |
709 | return -EINVAL; | |
884b600f ON |
710 | /* |
711 | * This is inaccurate (overcounts), but it works. | |
712 | */ | |
86478944 | 713 | return (ACM_NW - acm_wb_is_avail(acm)) * acm->writesize; |
1da177e4 LT |
714 | } |
715 | ||
716 | static void acm_tty_throttle(struct tty_struct *tty) | |
717 | { | |
718 | struct acm *acm = tty->driver_data; | |
719 | if (!ACM_READY(acm)) | |
720 | return; | |
721 | spin_lock_bh(&acm->throttle_lock); | |
722 | acm->throttle = 1; | |
723 | spin_unlock_bh(&acm->throttle_lock); | |
724 | } | |
725 | ||
726 | static void acm_tty_unthrottle(struct tty_struct *tty) | |
727 | { | |
728 | struct acm *acm = tty->driver_data; | |
729 | if (!ACM_READY(acm)) | |
730 | return; | |
731 | spin_lock_bh(&acm->throttle_lock); | |
732 | acm->throttle = 0; | |
733 | spin_unlock_bh(&acm->throttle_lock); | |
61a87adf | 734 | tasklet_schedule(&acm->urb_task); |
1da177e4 LT |
735 | } |
736 | ||
9e98966c | 737 | static int acm_tty_break_ctl(struct tty_struct *tty, int state) |
1da177e4 LT |
738 | { |
739 | struct acm *acm = tty->driver_data; | |
9e98966c | 740 | int retval; |
1da177e4 | 741 | if (!ACM_READY(acm)) |
9e98966c AC |
742 | return -EINVAL; |
743 | retval = acm_send_break(acm, state ? 0xffff : 0); | |
744 | if (retval < 0) | |
1da177e4 | 745 | dbg("send break failed"); |
9e98966c | 746 | return retval; |
1da177e4 LT |
747 | } |
748 | ||
749 | static int acm_tty_tiocmget(struct tty_struct *tty, struct file *file) | |
750 | { | |
751 | struct acm *acm = tty->driver_data; | |
752 | ||
753 | if (!ACM_READY(acm)) | |
754 | return -EINVAL; | |
755 | ||
756 | return (acm->ctrlout & ACM_CTRL_DTR ? TIOCM_DTR : 0) | | |
757 | (acm->ctrlout & ACM_CTRL_RTS ? TIOCM_RTS : 0) | | |
758 | (acm->ctrlin & ACM_CTRL_DSR ? TIOCM_DSR : 0) | | |
759 | (acm->ctrlin & ACM_CTRL_RI ? TIOCM_RI : 0) | | |
760 | (acm->ctrlin & ACM_CTRL_DCD ? TIOCM_CD : 0) | | |
761 | TIOCM_CTS; | |
762 | } | |
763 | ||
764 | static int acm_tty_tiocmset(struct tty_struct *tty, struct file *file, | |
765 | unsigned int set, unsigned int clear) | |
766 | { | |
767 | struct acm *acm = tty->driver_data; | |
768 | unsigned int newctrl; | |
769 | ||
770 | if (!ACM_READY(acm)) | |
771 | return -EINVAL; | |
772 | ||
773 | newctrl = acm->ctrlout; | |
774 | set = (set & TIOCM_DTR ? ACM_CTRL_DTR : 0) | (set & TIOCM_RTS ? ACM_CTRL_RTS : 0); | |
775 | clear = (clear & TIOCM_DTR ? ACM_CTRL_DTR : 0) | (clear & TIOCM_RTS ? ACM_CTRL_RTS : 0); | |
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 | ||
784 | static int acm_tty_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) | |
785 | { | |
786 | struct acm *acm = tty->driver_data; | |
787 | ||
788 | if (!ACM_READY(acm)) | |
789 | return -EINVAL; | |
790 | ||
791 | return -ENOIOCTLCMD; | |
792 | } | |
793 | ||
4c4c9432 | 794 | static const __u32 acm_tty_speed[] = { |
1da177e4 LT |
795 | 0, 50, 75, 110, 134, 150, 200, 300, 600, |
796 | 1200, 1800, 2400, 4800, 9600, 19200, 38400, | |
797 | 57600, 115200, 230400, 460800, 500000, 576000, | |
798 | 921600, 1000000, 1152000, 1500000, 2000000, | |
799 | 2500000, 3000000, 3500000, 4000000 | |
800 | }; | |
801 | ||
4c4c9432 | 802 | static const __u8 acm_tty_size[] = { |
1da177e4 LT |
803 | 5, 6, 7, 8 |
804 | }; | |
805 | ||
606d099c | 806 | static void acm_tty_set_termios(struct tty_struct *tty, struct ktermios *termios_old) |
1da177e4 LT |
807 | { |
808 | struct acm *acm = tty->driver_data; | |
606d099c | 809 | struct ktermios *termios = tty->termios; |
1da177e4 LT |
810 | struct usb_cdc_line_coding newline; |
811 | int newctrl = acm->ctrlout; | |
812 | ||
813 | if (!ACM_READY(acm)) | |
814 | return; | |
815 | ||
816 | newline.dwDTERate = cpu_to_le32p(acm_tty_speed + | |
817 | (termios->c_cflag & CBAUD & ~CBAUDEX) + (termios->c_cflag & CBAUDEX ? 15 : 0)); | |
818 | newline.bCharFormat = termios->c_cflag & CSTOPB ? 2 : 0; | |
819 | newline.bParityType = termios->c_cflag & PARENB ? | |
820 | (termios->c_cflag & PARODD ? 1 : 2) + (termios->c_cflag & CMSPAR ? 2 : 0) : 0; | |
821 | newline.bDataBits = acm_tty_size[(termios->c_cflag & CSIZE) >> 4]; | |
822 | ||
823 | acm->clocal = ((termios->c_cflag & CLOCAL) != 0); | |
824 | ||
825 | if (!newline.dwDTERate) { | |
826 | newline.dwDTERate = acm->line.dwDTERate; | |
827 | newctrl &= ~ACM_CTRL_DTR; | |
828 | } else newctrl |= ACM_CTRL_DTR; | |
829 | ||
830 | if (newctrl != acm->ctrlout) | |
831 | acm_set_control(acm, acm->ctrlout = newctrl); | |
832 | ||
833 | if (memcmp(&acm->line, &newline, sizeof newline)) { | |
834 | memcpy(&acm->line, &newline, sizeof newline); | |
835 | dbg("set line: %d %d %d %d", le32_to_cpu(newline.dwDTERate), | |
836 | newline.bCharFormat, newline.bParityType, | |
837 | newline.bDataBits); | |
838 | acm_set_line(acm, &acm->line); | |
839 | } | |
840 | } | |
841 | ||
842 | /* | |
843 | * USB probe and disconnect routines. | |
844 | */ | |
845 | ||
830f4021 | 846 | /* Little helpers: write/read buffers free */ |
884b600f ON |
847 | static void acm_write_buffers_free(struct acm *acm) |
848 | { | |
849 | int i; | |
850 | struct acm_wb *wb; | |
a496c64f | 851 | struct usb_device *usb_dev = interface_to_usbdev(acm->control); |
884b600f | 852 | |
86478944 | 853 | for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++) { |
a496c64f | 854 | usb_buffer_free(usb_dev, acm->writesize, wb->buf, wb->dmah); |
884b600f ON |
855 | } |
856 | } | |
857 | ||
830f4021 ON |
858 | static void acm_read_buffers_free(struct acm *acm) |
859 | { | |
860 | struct usb_device *usb_dev = interface_to_usbdev(acm->control); | |
861 | int i, n = acm->rx_buflimit; | |
862 | ||
863 | for (i = 0; i < n; i++) | |
864 | usb_buffer_free(usb_dev, acm->readsize, acm->rb[i].base, acm->rb[i].dma); | |
865 | } | |
866 | ||
884b600f ON |
867 | /* Little helper: write buffers allocate */ |
868 | static int acm_write_buffers_alloc(struct acm *acm) | |
869 | { | |
870 | int i; | |
871 | struct acm_wb *wb; | |
872 | ||
86478944 | 873 | for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++) { |
884b600f ON |
874 | wb->buf = usb_buffer_alloc(acm->dev, acm->writesize, GFP_KERNEL, |
875 | &wb->dmah); | |
876 | if (!wb->buf) { | |
877 | while (i != 0) { | |
878 | --i; | |
879 | --wb; | |
880 | usb_buffer_free(acm->dev, acm->writesize, | |
881 | wb->buf, wb->dmah); | |
882 | } | |
883 | return -ENOMEM; | |
884 | } | |
885 | } | |
886 | return 0; | |
887 | } | |
888 | ||
1da177e4 LT |
889 | static int acm_probe (struct usb_interface *intf, |
890 | const struct usb_device_id *id) | |
891 | { | |
892 | struct usb_cdc_union_desc *union_header = NULL; | |
c4cabd28 | 893 | struct usb_cdc_country_functional_desc *cfd = NULL; |
c6dbf554 | 894 | unsigned char *buffer = intf->altsetting->extra; |
1da177e4 LT |
895 | int buflen = intf->altsetting->extralen; |
896 | struct usb_interface *control_interface; | |
897 | struct usb_interface *data_interface; | |
898 | struct usb_endpoint_descriptor *epctrl; | |
899 | struct usb_endpoint_descriptor *epread; | |
900 | struct usb_endpoint_descriptor *epwrite; | |
901 | struct usb_device *usb_dev = interface_to_usbdev(intf); | |
902 | struct acm *acm; | |
903 | int minor; | |
904 | int ctrlsize,readsize; | |
905 | u8 *buf; | |
906 | u8 ac_management_function = 0; | |
907 | u8 call_management_function = 0; | |
908 | int call_interface_num = -1; | |
909 | int data_interface_num; | |
910 | unsigned long quirks; | |
86478944 | 911 | int num_rx_buf; |
61a87adf | 912 | int i; |
1da177e4 | 913 | |
86478944 | 914 | /* normal quirks */ |
1da177e4 | 915 | quirks = (unsigned long)id->driver_info; |
86478944 ON |
916 | num_rx_buf = (quirks == SINGLE_RX_URB) ? 1 : ACM_NR; |
917 | ||
918 | /* handle quirks deadly to normal probing*/ | |
1da177e4 LT |
919 | if (quirks == NO_UNION_NORMAL) { |
920 | data_interface = usb_ifnum_to_if(usb_dev, 1); | |
921 | control_interface = usb_ifnum_to_if(usb_dev, 0); | |
922 | goto skip_normal_probe; | |
923 | } | |
924 | ||
925 | /* normal probing*/ | |
926 | if (!buffer) { | |
9908a32e | 927 | dev_err(&intf->dev, "Weird descriptor references\n"); |
1da177e4 LT |
928 | return -EINVAL; |
929 | } | |
930 | ||
931 | if (!buflen) { | |
932 | if (intf->cur_altsetting->endpoint->extralen && intf->cur_altsetting->endpoint->extra) { | |
898eb71c | 933 | dev_dbg(&intf->dev,"Seeking extra descriptors on endpoint\n"); |
1da177e4 LT |
934 | buflen = intf->cur_altsetting->endpoint->extralen; |
935 | buffer = intf->cur_altsetting->endpoint->extra; | |
936 | } else { | |
9908a32e GKH |
937 | dev_err(&intf->dev, |
938 | "Zero length descriptor references\n"); | |
1da177e4 LT |
939 | return -EINVAL; |
940 | } | |
941 | } | |
942 | ||
943 | while (buflen > 0) { | |
944 | if (buffer [1] != USB_DT_CS_INTERFACE) { | |
9908a32e | 945 | dev_err(&intf->dev, "skipping garbage\n"); |
1da177e4 LT |
946 | goto next_desc; |
947 | } | |
948 | ||
949 | switch (buffer [2]) { | |
950 | case USB_CDC_UNION_TYPE: /* we've found it */ | |
951 | if (union_header) { | |
9908a32e GKH |
952 | dev_err(&intf->dev, "More than one " |
953 | "union descriptor, " | |
954 | "skipping ...\n"); | |
1da177e4 LT |
955 | goto next_desc; |
956 | } | |
957 | union_header = (struct usb_cdc_union_desc *) | |
958 | buffer; | |
959 | break; | |
c4cabd28 ON |
960 | case USB_CDC_COUNTRY_TYPE: /* export through sysfs*/ |
961 | cfd = (struct usb_cdc_country_functional_desc *)buffer; | |
962 | break; | |
1da177e4 LT |
963 | case USB_CDC_HEADER_TYPE: /* maybe check version */ |
964 | break; /* for now we ignore it */ | |
965 | case USB_CDC_ACM_TYPE: | |
966 | ac_management_function = buffer[3]; | |
967 | break; | |
968 | case USB_CDC_CALL_MANAGEMENT_TYPE: | |
969 | call_management_function = buffer[3]; | |
970 | call_interface_num = buffer[4]; | |
971 | if ((call_management_function & 3) != 3) | |
9908a32e GKH |
972 | dev_err(&intf->dev, "This device " |
973 | "cannot do calls on its own. " | |
974 | "It is no modem.\n"); | |
1da177e4 | 975 | break; |
1da177e4 | 976 | default: |
c6dbf554 DB |
977 | /* there are LOTS more CDC descriptors that |
978 | * could legitimately be found here. | |
979 | */ | |
980 | dev_dbg(&intf->dev, "Ignoring descriptor: " | |
981 | "type %02x, length %d\n", | |
982 | buffer[2], buffer[0]); | |
1da177e4 LT |
983 | break; |
984 | } | |
985 | next_desc: | |
986 | buflen -= buffer[0]; | |
987 | buffer += buffer[0]; | |
988 | } | |
989 | ||
990 | if (!union_header) { | |
991 | if (call_interface_num > 0) { | |
898eb71c | 992 | dev_dbg(&intf->dev,"No union descriptor, using call management descriptor\n"); |
1da177e4 LT |
993 | data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = call_interface_num)); |
994 | control_interface = intf; | |
995 | } else { | |
898eb71c | 996 | dev_dbg(&intf->dev,"No union descriptor, giving up\n"); |
1da177e4 LT |
997 | return -ENODEV; |
998 | } | |
999 | } else { | |
1000 | control_interface = usb_ifnum_to_if(usb_dev, union_header->bMasterInterface0); | |
1001 | data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = union_header->bSlaveInterface0)); | |
1002 | if (!control_interface || !data_interface) { | |
898eb71c | 1003 | dev_dbg(&intf->dev,"no interfaces\n"); |
1da177e4 LT |
1004 | return -ENODEV; |
1005 | } | |
1006 | } | |
1007 | ||
1008 | if (data_interface_num != call_interface_num) | |
dc0d5c1e | 1009 | dev_dbg(&intf->dev,"Separate call control interface. That is not fully supported.\n"); |
1da177e4 LT |
1010 | |
1011 | skip_normal_probe: | |
1012 | ||
1013 | /*workaround for switched interfaces */ | |
1014 | if (data_interface->cur_altsetting->desc.bInterfaceClass != CDC_DATA_INTERFACE_TYPE) { | |
1015 | if (control_interface->cur_altsetting->desc.bInterfaceClass == CDC_DATA_INTERFACE_TYPE) { | |
1016 | struct usb_interface *t; | |
898eb71c | 1017 | dev_dbg(&intf->dev,"Your device has switched interfaces.\n"); |
1da177e4 LT |
1018 | |
1019 | t = control_interface; | |
1020 | control_interface = data_interface; | |
1021 | data_interface = t; | |
1022 | } else { | |
1023 | return -EINVAL; | |
1024 | } | |
1025 | } | |
74da5d68 AS |
1026 | |
1027 | /* Accept probe requests only for the control interface */ | |
1028 | if (intf != control_interface) | |
1029 | return -ENODEV; | |
1da177e4 LT |
1030 | |
1031 | if (usb_interface_claimed(data_interface)) { /* valid in this context */ | |
898eb71c | 1032 | dev_dbg(&intf->dev,"The data interface isn't available\n"); |
1da177e4 LT |
1033 | return -EBUSY; |
1034 | } | |
1035 | ||
1036 | ||
1037 | if (data_interface->cur_altsetting->desc.bNumEndpoints < 2) | |
1038 | return -EINVAL; | |
1039 | ||
1040 | epctrl = &control_interface->cur_altsetting->endpoint[0].desc; | |
1041 | epread = &data_interface->cur_altsetting->endpoint[0].desc; | |
1042 | epwrite = &data_interface->cur_altsetting->endpoint[1].desc; | |
1043 | ||
1044 | ||
1045 | /* workaround for switched endpoints */ | |
45aea704 | 1046 | if (!usb_endpoint_dir_in(epread)) { |
1da177e4 LT |
1047 | /* descriptors are swapped */ |
1048 | struct usb_endpoint_descriptor *t; | |
898eb71c | 1049 | dev_dbg(&intf->dev,"The data interface has switched endpoints\n"); |
1da177e4 LT |
1050 | |
1051 | t = epread; | |
1052 | epread = epwrite; | |
1053 | epwrite = t; | |
1054 | } | |
1055 | dbg("interfaces are valid"); | |
1056 | for (minor = 0; minor < ACM_TTY_MINORS && acm_table[minor]; minor++); | |
1057 | ||
1058 | if (minor == ACM_TTY_MINORS) { | |
9908a32e | 1059 | dev_err(&intf->dev, "no more free acm devices\n"); |
1da177e4 LT |
1060 | return -ENODEV; |
1061 | } | |
1062 | ||
46f116ea | 1063 | if (!(acm = kzalloc(sizeof(struct acm), GFP_KERNEL))) { |
898eb71c | 1064 | dev_dbg(&intf->dev, "out of memory (acm kzalloc)\n"); |
1da177e4 LT |
1065 | goto alloc_fail; |
1066 | } | |
1da177e4 LT |
1067 | |
1068 | ctrlsize = le16_to_cpu(epctrl->wMaxPacketSize); | |
86478944 | 1069 | readsize = le16_to_cpu(epread->wMaxPacketSize)* ( quirks == SINGLE_RX_URB ? 1 : 2); |
e4cf3aa8 | 1070 | acm->writesize = le16_to_cpu(epwrite->wMaxPacketSize) * 20; |
1da177e4 LT |
1071 | acm->control = control_interface; |
1072 | acm->data = data_interface; | |
1073 | acm->minor = minor; | |
1074 | acm->dev = usb_dev; | |
1075 | acm->ctrl_caps = ac_management_function; | |
1076 | acm->ctrlsize = ctrlsize; | |
1077 | acm->readsize = readsize; | |
86478944 | 1078 | acm->rx_buflimit = num_rx_buf; |
61a87adf DK |
1079 | acm->urb_task.func = acm_rx_tasklet; |
1080 | acm->urb_task.data = (unsigned long) acm; | |
c4028958 | 1081 | INIT_WORK(&acm->work, acm_softint); |
11ea859d | 1082 | INIT_WORK(&acm->waker, acm_waker); |
e5fbab51 | 1083 | init_waitqueue_head(&acm->drain_wait); |
1da177e4 | 1084 | spin_lock_init(&acm->throttle_lock); |
884b600f | 1085 | spin_lock_init(&acm->write_lock); |
61a87adf | 1086 | spin_lock_init(&acm->read_lock); |
1365baf7 | 1087 | mutex_init(&acm->mutex); |
61a87adf | 1088 | acm->rx_endpoint = usb_rcvbulkpipe(usb_dev, epread->bEndpointAddress); |
1da177e4 LT |
1089 | |
1090 | buf = usb_buffer_alloc(usb_dev, ctrlsize, GFP_KERNEL, &acm->ctrl_dma); | |
1091 | if (!buf) { | |
898eb71c | 1092 | dev_dbg(&intf->dev, "out of memory (ctrl buffer alloc)\n"); |
1da177e4 LT |
1093 | goto alloc_fail2; |
1094 | } | |
1095 | acm->ctrl_buffer = buf; | |
1096 | ||
884b600f | 1097 | if (acm_write_buffers_alloc(acm) < 0) { |
898eb71c | 1098 | dev_dbg(&intf->dev, "out of memory (write buffer alloc)\n"); |
1da177e4 LT |
1099 | goto alloc_fail4; |
1100 | } | |
1da177e4 LT |
1101 | |
1102 | acm->ctrlurb = usb_alloc_urb(0, GFP_KERNEL); | |
1103 | if (!acm->ctrlurb) { | |
898eb71c | 1104 | dev_dbg(&intf->dev, "out of memory (ctrlurb kmalloc)\n"); |
1da177e4 LT |
1105 | goto alloc_fail5; |
1106 | } | |
86478944 | 1107 | for (i = 0; i < num_rx_buf; i++) { |
61a87adf DK |
1108 | struct acm_ru *rcv = &(acm->ru[i]); |
1109 | ||
1110 | if (!(rcv->urb = usb_alloc_urb(0, GFP_KERNEL))) { | |
898eb71c | 1111 | dev_dbg(&intf->dev, "out of memory (read urbs usb_alloc_urb)\n"); |
61a87adf DK |
1112 | goto alloc_fail7; |
1113 | } | |
1114 | ||
1115 | rcv->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
1116 | rcv->instance = acm; | |
1117 | } | |
86478944 | 1118 | for (i = 0; i < num_rx_buf; i++) { |
672c4e18 | 1119 | struct acm_rb *rb = &(acm->rb[i]); |
61a87adf | 1120 | |
672c4e18 DB |
1121 | rb->base = usb_buffer_alloc(acm->dev, readsize, |
1122 | GFP_KERNEL, &rb->dma); | |
1123 | if (!rb->base) { | |
898eb71c | 1124 | dev_dbg(&intf->dev, "out of memory (read bufs usb_buffer_alloc)\n"); |
61a87adf DK |
1125 | goto alloc_fail7; |
1126 | } | |
1da177e4 | 1127 | } |
e4cf3aa8 DE |
1128 | for(i = 0; i < ACM_NW; i++) |
1129 | { | |
1130 | struct acm_wb *snd = &(acm->wb[i]); | |
1131 | ||
1132 | if (!(snd->urb = usb_alloc_urb(0, GFP_KERNEL))) { | |
1133 | dev_dbg(&intf->dev, "out of memory (write urbs usb_alloc_urb)"); | |
1134 | goto alloc_fail7; | |
1135 | } | |
1136 | ||
1137 | usb_fill_bulk_urb(snd->urb, usb_dev, usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress), | |
1138 | NULL, acm->writesize, acm_write_bulk, snd); | |
1139 | snd->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
1140 | snd->instance = acm; | |
1da177e4 LT |
1141 | } |
1142 | ||
c4cabd28 ON |
1143 | usb_set_intfdata (intf, acm); |
1144 | ||
1145 | i = device_create_file(&intf->dev, &dev_attr_bmCapabilities); | |
1146 | if (i < 0) | |
1147 | goto alloc_fail8; | |
1148 | ||
1149 | if (cfd) { /* export the country data */ | |
1150 | acm->country_codes = kmalloc(cfd->bLength - 4, GFP_KERNEL); | |
1151 | if (!acm->country_codes) | |
1152 | goto skip_countries; | |
1153 | acm->country_code_size = cfd->bLength - 4; | |
1154 | memcpy(acm->country_codes, (u8 *)&cfd->wCountyCode0, cfd->bLength - 4); | |
1155 | acm->country_rel_date = cfd->iCountryCodeRelDate; | |
1156 | ||
1157 | i = device_create_file(&intf->dev, &dev_attr_wCountryCodes); | |
1158 | if (i < 0) { | |
1159 | kfree(acm->country_codes); | |
1160 | goto skip_countries; | |
1161 | } | |
1162 | ||
1163 | i = device_create_file(&intf->dev, &dev_attr_iCountryCodeRelDate); | |
1164 | if (i < 0) { | |
1165 | kfree(acm->country_codes); | |
1166 | goto skip_countries; | |
1167 | } | |
1168 | } | |
1169 | ||
1170 | skip_countries: | |
1da177e4 LT |
1171 | usb_fill_int_urb(acm->ctrlurb, usb_dev, usb_rcvintpipe(usb_dev, epctrl->bEndpointAddress), |
1172 | acm->ctrl_buffer, ctrlsize, acm_ctrl_irq, acm, epctrl->bInterval); | |
1173 | acm->ctrlurb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
1174 | acm->ctrlurb->transfer_dma = acm->ctrl_dma; | |
1175 | ||
1da177e4 LT |
1176 | dev_info(&intf->dev, "ttyACM%d: USB ACM device\n", minor); |
1177 | ||
1178 | acm_set_control(acm, acm->ctrlout); | |
1179 | ||
1180 | acm->line.dwDTERate = cpu_to_le32(9600); | |
1181 | acm->line.bDataBits = 8; | |
1182 | acm_set_line(acm, &acm->line); | |
1183 | ||
1184 | usb_driver_claim_interface(&acm_driver, data_interface, acm); | |
672c4e18 | 1185 | usb_set_intfdata(data_interface, acm); |
1da177e4 | 1186 | |
83ef344a | 1187 | usb_get_intf(control_interface); |
1188 | tty_register_device(acm_tty_driver, minor, &control_interface->dev); | |
1da177e4 LT |
1189 | |
1190 | acm_table[minor] = acm; | |
1da177e4 | 1191 | |
c4cabd28 ON |
1192 | return 0; |
1193 | alloc_fail8: | |
e4cf3aa8 DE |
1194 | for (i = 0; i < ACM_NW; i++) |
1195 | usb_free_urb(acm->wb[i].urb); | |
1da177e4 | 1196 | alloc_fail7: |
830f4021 | 1197 | acm_read_buffers_free(acm); |
86478944 | 1198 | for (i = 0; i < num_rx_buf; i++) |
61a87adf | 1199 | usb_free_urb(acm->ru[i].urb); |
1da177e4 LT |
1200 | usb_free_urb(acm->ctrlurb); |
1201 | alloc_fail5: | |
884b600f | 1202 | acm_write_buffers_free(acm); |
1da177e4 | 1203 | alloc_fail4: |
1da177e4 LT |
1204 | usb_buffer_free(usb_dev, ctrlsize, acm->ctrl_buffer, acm->ctrl_dma); |
1205 | alloc_fail2: | |
1206 | kfree(acm); | |
1207 | alloc_fail: | |
1208 | return -ENOMEM; | |
1209 | } | |
1210 | ||
1365baf7 ON |
1211 | static void stop_data_traffic(struct acm *acm) |
1212 | { | |
1213 | int i; | |
11ea859d | 1214 | dbg("Entering stop_data_traffic"); |
1365baf7 ON |
1215 | |
1216 | tasklet_disable(&acm->urb_task); | |
1217 | ||
1218 | usb_kill_urb(acm->ctrlurb); | |
e4cf3aa8 DE |
1219 | for(i = 0; i < ACM_NW; i++) |
1220 | usb_kill_urb(acm->wb[i].urb); | |
1365baf7 ON |
1221 | for (i = 0; i < acm->rx_buflimit; i++) |
1222 | usb_kill_urb(acm->ru[i].urb); | |
1223 | ||
1365baf7 ON |
1224 | tasklet_enable(&acm->urb_task); |
1225 | ||
1226 | cancel_work_sync(&acm->work); | |
11ea859d | 1227 | cancel_work_sync(&acm->waker); |
1365baf7 ON |
1228 | } |
1229 | ||
1da177e4 LT |
1230 | static void acm_disconnect(struct usb_interface *intf) |
1231 | { | |
c4cabd28 | 1232 | struct acm *acm = usb_get_intfdata(intf); |
1da177e4 | 1233 | struct usb_device *usb_dev = interface_to_usbdev(intf); |
1da177e4 | 1234 | |
672c4e18 DB |
1235 | /* sibling interface is already cleaning up */ |
1236 | if (!acm) | |
86067eea | 1237 | return; |
672c4e18 DB |
1238 | |
1239 | mutex_lock(&open_mutex); | |
c4cabd28 | 1240 | if (acm->country_codes){ |
74da5d68 AS |
1241 | device_remove_file(&acm->control->dev, |
1242 | &dev_attr_wCountryCodes); | |
1243 | device_remove_file(&acm->control->dev, | |
1244 | &dev_attr_iCountryCodeRelDate); | |
c4cabd28 | 1245 | } |
74da5d68 | 1246 | device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities); |
1da177e4 | 1247 | acm->dev = NULL; |
86067eea ON |
1248 | usb_set_intfdata(acm->control, NULL); |
1249 | usb_set_intfdata(acm->data, NULL); | |
1da177e4 | 1250 | |
1365baf7 | 1251 | stop_data_traffic(acm); |
1da177e4 | 1252 | |
884b600f | 1253 | acm_write_buffers_free(acm); |
1da177e4 | 1254 | usb_buffer_free(usb_dev, acm->ctrlsize, acm->ctrl_buffer, acm->ctrl_dma); |
830f4021 | 1255 | acm_read_buffers_free(acm); |
1da177e4 | 1256 | |
830f4021 ON |
1257 | usb_driver_release_interface(&acm_driver, intf == acm->control ? |
1258 | acm->data : acm->control); | |
1da177e4 LT |
1259 | |
1260 | if (!acm->used) { | |
83ef344a | 1261 | acm_tty_unregister(acm); |
4186ecf8 | 1262 | mutex_unlock(&open_mutex); |
1da177e4 LT |
1263 | return; |
1264 | } | |
1265 | ||
4186ecf8 | 1266 | mutex_unlock(&open_mutex); |
1da177e4 LT |
1267 | |
1268 | if (acm->tty) | |
1269 | tty_hangup(acm->tty); | |
1270 | } | |
1271 | ||
35758589 | 1272 | #ifdef CONFIG_PM |
1365baf7 ON |
1273 | static int acm_suspend(struct usb_interface *intf, pm_message_t message) |
1274 | { | |
1275 | struct acm *acm = usb_get_intfdata(intf); | |
11ea859d ON |
1276 | int cnt; |
1277 | ||
65bfd296 | 1278 | if (message.event & PM_EVENT_AUTO) { |
11ea859d ON |
1279 | int b; |
1280 | ||
1281 | spin_lock_irq(&acm->read_lock); | |
1282 | spin_lock(&acm->write_lock); | |
1283 | b = acm->processing + acm->transmitting; | |
1284 | spin_unlock(&acm->write_lock); | |
1285 | spin_unlock_irq(&acm->read_lock); | |
1286 | if (b) | |
1287 | return -EBUSY; | |
1288 | } | |
1289 | ||
1290 | spin_lock_irq(&acm->read_lock); | |
1291 | spin_lock(&acm->write_lock); | |
1292 | cnt = acm->susp_count++; | |
1293 | spin_unlock(&acm->write_lock); | |
1294 | spin_unlock_irq(&acm->read_lock); | |
1365baf7 | 1295 | |
11ea859d | 1296 | if (cnt) |
1365baf7 ON |
1297 | return 0; |
1298 | /* | |
1299 | we treat opened interfaces differently, | |
1300 | we must guard against open | |
1301 | */ | |
1302 | mutex_lock(&acm->mutex); | |
1303 | ||
1304 | if (acm->used) | |
1305 | stop_data_traffic(acm); | |
1306 | ||
1307 | mutex_unlock(&acm->mutex); | |
1308 | return 0; | |
1309 | } | |
1310 | ||
1311 | static int acm_resume(struct usb_interface *intf) | |
1312 | { | |
1313 | struct acm *acm = usb_get_intfdata(intf); | |
1314 | int rv = 0; | |
11ea859d | 1315 | int cnt; |
1365baf7 | 1316 | |
11ea859d ON |
1317 | spin_lock_irq(&acm->read_lock); |
1318 | acm->susp_count -= 1; | |
1319 | cnt = acm->susp_count; | |
1320 | spin_unlock_irq(&acm->read_lock); | |
1321 | ||
1322 | if (cnt) | |
1365baf7 ON |
1323 | return 0; |
1324 | ||
1325 | mutex_lock(&acm->mutex); | |
1326 | if (acm->used) { | |
1327 | rv = usb_submit_urb(acm->ctrlurb, GFP_NOIO); | |
1328 | if (rv < 0) | |
11ea859d | 1329 | goto err_out; |
1365baf7 ON |
1330 | |
1331 | tasklet_schedule(&acm->urb_task); | |
1332 | } | |
1333 | ||
1334 | err_out: | |
1335 | mutex_unlock(&acm->mutex); | |
1336 | return rv; | |
1337 | } | |
35758589 ON |
1338 | |
1339 | #endif /* CONFIG_PM */ | |
1da177e4 LT |
1340 | /* |
1341 | * USB driver structure. | |
1342 | */ | |
1343 | ||
1344 | static struct usb_device_id acm_ids[] = { | |
1345 | /* quirky and broken devices */ | |
1346 | { USB_DEVICE(0x0870, 0x0001), /* Metricom GS Modem */ | |
1347 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1348 | }, | |
b0e2a705 AA |
1349 | { USB_DEVICE(0x0e8d, 0x0003), /* FIREFLY, MediaTek Inc; andrey.arapov@gmail.com */ |
1350 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1351 | }, | |
0f9c7b4a AL |
1352 | { USB_DEVICE(0x0e8d, 0x3329), /* MediaTek Inc GPS */ |
1353 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1354 | }, | |
8753e65e MO |
1355 | { USB_DEVICE(0x0482, 0x0203), /* KYOCERA AH-K3001V */ |
1356 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1357 | }, | |
91a9c921 CM |
1358 | { USB_DEVICE(0x079b, 0x000f), /* BT On-Air USB MODEM */ |
1359 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1360 | }, | |
86478944 ON |
1361 | { USB_DEVICE(0x0ace, 0x1608), /* ZyDAS 56K USB MODEM */ |
1362 | .driver_info = SINGLE_RX_URB, /* firmware bug */ | |
1363 | }, | |
3dd2ae81 ON |
1364 | { USB_DEVICE(0x0ace, 0x1611), /* ZyDAS 56K USB MODEM - new version */ |
1365 | .driver_info = SINGLE_RX_URB, /* firmware bug */ | |
1366 | }, | |
9be8456c ON |
1367 | { USB_DEVICE(0x22b8, 0x7000), /* Motorola Q Phone */ |
1368 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1369 | }, | |
6149ed5e IM |
1370 | { USB_DEVICE(0x0803, 0x3095), /* Zoom Telephonics Model 3095F USB MODEM */ |
1371 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1372 | }, | |
c8fd2c37 ES |
1373 | { USB_DEVICE(0x0572, 0x1321), /* Conexant USB MODEM CX93010 */ |
1374 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1375 | }, | |
c89c60e9 AC |
1376 | { USB_DEVICE(0x0572, 0x1324), /* Conexant USB MODEM RD02-D400 */ |
1377 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1378 | }, | |
9be8456c | 1379 | |
1da177e4 LT |
1380 | /* control interfaces with various AT-command sets */ |
1381 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
1382 | USB_CDC_ACM_PROTO_AT_V25TER) }, | |
1383 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
1384 | USB_CDC_ACM_PROTO_AT_PCCA101) }, | |
1385 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
1386 | USB_CDC_ACM_PROTO_AT_PCCA101_WAKE) }, | |
1387 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
1388 | USB_CDC_ACM_PROTO_AT_GSM) }, | |
1389 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
1390 | USB_CDC_ACM_PROTO_AT_3G ) }, | |
1391 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
1392 | USB_CDC_ACM_PROTO_AT_CDMA) }, | |
1393 | ||
1394 | /* NOTE: COMM/ACM/0xff is likely MSFT RNDIS ... NOT a modem!! */ | |
1395 | { } | |
1396 | }; | |
1397 | ||
1398 | MODULE_DEVICE_TABLE (usb, acm_ids); | |
1399 | ||
1400 | static struct usb_driver acm_driver = { | |
1da177e4 LT |
1401 | .name = "cdc_acm", |
1402 | .probe = acm_probe, | |
1403 | .disconnect = acm_disconnect, | |
35758589 | 1404 | #ifdef CONFIG_PM |
1365baf7 ON |
1405 | .suspend = acm_suspend, |
1406 | .resume = acm_resume, | |
35758589 | 1407 | #endif |
1da177e4 | 1408 | .id_table = acm_ids, |
35758589 | 1409 | #ifdef CONFIG_PM |
1365baf7 | 1410 | .supports_autosuspend = 1, |
35758589 | 1411 | #endif |
1da177e4 LT |
1412 | }; |
1413 | ||
1414 | /* | |
1415 | * TTY driver structures. | |
1416 | */ | |
1417 | ||
b68e31d0 | 1418 | static const struct tty_operations acm_ops = { |
1da177e4 LT |
1419 | .open = acm_tty_open, |
1420 | .close = acm_tty_close, | |
1421 | .write = acm_tty_write, | |
1422 | .write_room = acm_tty_write_room, | |
1423 | .ioctl = acm_tty_ioctl, | |
1424 | .throttle = acm_tty_throttle, | |
1425 | .unthrottle = acm_tty_unthrottle, | |
1426 | .chars_in_buffer = acm_tty_chars_in_buffer, | |
1427 | .break_ctl = acm_tty_break_ctl, | |
1428 | .set_termios = acm_tty_set_termios, | |
1429 | .tiocmget = acm_tty_tiocmget, | |
1430 | .tiocmset = acm_tty_tiocmset, | |
1431 | }; | |
1432 | ||
1433 | /* | |
1434 | * Init / exit. | |
1435 | */ | |
1436 | ||
1437 | static int __init acm_init(void) | |
1438 | { | |
1439 | int retval; | |
1440 | acm_tty_driver = alloc_tty_driver(ACM_TTY_MINORS); | |
1441 | if (!acm_tty_driver) | |
1442 | return -ENOMEM; | |
1443 | acm_tty_driver->owner = THIS_MODULE, | |
1444 | acm_tty_driver->driver_name = "acm", | |
1445 | acm_tty_driver->name = "ttyACM", | |
1da177e4 LT |
1446 | acm_tty_driver->major = ACM_TTY_MAJOR, |
1447 | acm_tty_driver->minor_start = 0, | |
1448 | acm_tty_driver->type = TTY_DRIVER_TYPE_SERIAL, | |
1449 | acm_tty_driver->subtype = SERIAL_TYPE_NORMAL, | |
331b8319 | 1450 | acm_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; |
1da177e4 LT |
1451 | acm_tty_driver->init_termios = tty_std_termios; |
1452 | acm_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; | |
1453 | tty_set_operations(acm_tty_driver, &acm_ops); | |
1454 | ||
1455 | retval = tty_register_driver(acm_tty_driver); | |
1456 | if (retval) { | |
1457 | put_tty_driver(acm_tty_driver); | |
1458 | return retval; | |
1459 | } | |
1460 | ||
1461 | retval = usb_register(&acm_driver); | |
1462 | if (retval) { | |
1463 | tty_unregister_driver(acm_tty_driver); | |
1464 | put_tty_driver(acm_tty_driver); | |
1465 | return retval; | |
1466 | } | |
1467 | ||
5909f6ea GKH |
1468 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
1469 | DRIVER_DESC "\n"); | |
1da177e4 LT |
1470 | |
1471 | return 0; | |
1472 | } | |
1473 | ||
1474 | static void __exit acm_exit(void) | |
1475 | { | |
1476 | usb_deregister(&acm_driver); | |
1477 | tty_unregister_driver(acm_tty_driver); | |
1478 | put_tty_driver(acm_tty_driver); | |
1479 | } | |
1480 | ||
1481 | module_init(acm_init); | |
1482 | module_exit(acm_exit); | |
1483 | ||
1484 | MODULE_AUTHOR( DRIVER_AUTHOR ); | |
1485 | MODULE_DESCRIPTION( DRIVER_DESC ); | |
1486 | MODULE_LICENSE("GPL"); | |
1487 |