Commit | Line | Data |
---|---|---|
5fd54ace | 1 | // SPDX-License-Identifier: GPL-2.0+ |
1da177e4 LT |
2 | /* |
3 | * cdc-acm.c | |
4 | * | |
5 | * Copyright (c) 1999 Armin Fuerst <fuerst@in.tum.de> | |
a2531293 | 6 | * Copyright (c) 1999 Pavel Machek <pavel@ucw.cz> |
1da177e4 LT |
7 | * Copyright (c) 1999 Johannes Erdfelt <johannes@erdfelt.com> |
8 | * Copyright (c) 2000 Vojtech Pavlik <vojtech@suse.cz> | |
9 | * Copyright (c) 2004 Oliver Neukum <oliver@neukum.name> | |
61a87adf | 10 | * Copyright (c) 2005 David Kubicek <dave@awk.cz> |
088c64f8 | 11 | * Copyright (c) 2011 Johan Hovold <jhovold@gmail.com> |
1da177e4 LT |
12 | * |
13 | * USB Abstract Control Model driver for USB modems and ISDN adapters | |
14 | * | |
15 | * Sponsored by SuSE | |
1da177e4 LT |
16 | */ |
17 | ||
18 | #undef DEBUG | |
e5fbab51 | 19 | #undef VERBOSE_DEBUG |
1da177e4 LT |
20 | |
21 | #include <linux/kernel.h> | |
174cd4b1 | 22 | #include <linux/sched/signal.h> |
1da177e4 LT |
23 | #include <linux/errno.h> |
24 | #include <linux/init.h> | |
25 | #include <linux/slab.h> | |
ea258352 | 26 | #include <linux/log2.h> |
1da177e4 | 27 | #include <linux/tty.h> |
7af25b4b | 28 | #include <linux/serial.h> |
1da177e4 LT |
29 | #include <linux/tty_driver.h> |
30 | #include <linux/tty_flip.h> | |
31 | #include <linux/module.h> | |
4186ecf8 | 32 | #include <linux/mutex.h> |
10077d4a | 33 | #include <linux/uaccess.h> |
1da177e4 | 34 | #include <linux/usb.h> |
a8c28f23 | 35 | #include <linux/usb/cdc.h> |
1da177e4 LT |
36 | #include <asm/byteorder.h> |
37 | #include <asm/unaligned.h> | |
6cb4f4df | 38 | #include <linux/idr.h> |
61a87adf | 39 | #include <linux/list.h> |
1da177e4 LT |
40 | |
41 | #include "cdc-acm.h" | |
42 | ||
e5fbab51 | 43 | |
088c64f8 | 44 | #define DRIVER_AUTHOR "Armin Fuerst, Pavel Machek, Johannes Erdfelt, Vojtech Pavlik, David Kubicek, Johan Hovold" |
1da177e4 LT |
45 | #define DRIVER_DESC "USB Abstract Control Model driver for USB modems and ISDN adapters" |
46 | ||
47 | static struct usb_driver acm_driver; | |
48 | static struct tty_driver *acm_tty_driver; | |
1da177e4 | 49 | |
6cb4f4df JH |
50 | static DEFINE_IDR(acm_minors); |
51 | static DEFINE_MUTEX(acm_minors_lock); | |
1da177e4 | 52 | |
24cb4502 JP |
53 | static void acm_tty_set_termios(struct tty_struct *tty, |
54 | struct ktermios *termios_old); | |
55 | ||
7fb57a01 | 56 | /* |
6cb4f4df | 57 | * acm_minors accessors |
7fb57a01 | 58 | */ |
1da177e4 | 59 | |
7fb57a01 | 60 | /* |
6cb4f4df | 61 | * Look up an ACM structure by minor. If found and not disconnected, increment |
7fb57a01 HS |
62 | * its refcount and return it with its mutex held. |
63 | */ | |
6cb4f4df | 64 | static struct acm *acm_get_by_minor(unsigned int minor) |
7fb57a01 HS |
65 | { |
66 | struct acm *acm; | |
67 | ||
6cb4f4df JH |
68 | mutex_lock(&acm_minors_lock); |
69 | acm = idr_find(&acm_minors, minor); | |
7fb57a01 HS |
70 | if (acm) { |
71 | mutex_lock(&acm->mutex); | |
72 | if (acm->disconnected) { | |
73 | mutex_unlock(&acm->mutex); | |
74 | acm = NULL; | |
75 | } else { | |
76 | tty_port_get(&acm->port); | |
77 | mutex_unlock(&acm->mutex); | |
78 | } | |
79 | } | |
6cb4f4df | 80 | mutex_unlock(&acm_minors_lock); |
7fb57a01 HS |
81 | return acm; |
82 | } | |
83 | ||
84 | /* | |
85 | * Try to find an available minor number and if found, associate it with 'acm'. | |
86 | */ | |
87 | static int acm_alloc_minor(struct acm *acm) | |
88 | { | |
89 | int minor; | |
90 | ||
6cb4f4df JH |
91 | mutex_lock(&acm_minors_lock); |
92 | minor = idr_alloc(&acm_minors, acm, 0, ACM_TTY_MINORS, GFP_KERNEL); | |
93 | mutex_unlock(&acm_minors_lock); | |
7fb57a01 HS |
94 | |
95 | return minor; | |
96 | } | |
97 | ||
98 | /* Release the minor number associated with 'acm'. */ | |
99 | static void acm_release_minor(struct acm *acm) | |
100 | { | |
6cb4f4df JH |
101 | mutex_lock(&acm_minors_lock); |
102 | idr_remove(&acm_minors, acm->minor); | |
103 | mutex_unlock(&acm_minors_lock); | |
7fb57a01 | 104 | } |
739e0285 | 105 | |
1da177e4 LT |
106 | /* |
107 | * Functions for ACM control messages. | |
108 | */ | |
109 | ||
6e47e069 AC |
110 | static int acm_ctrl_msg(struct acm *acm, int request, int value, |
111 | void *buf, int len) | |
1da177e4 | 112 | { |
bae3f4c5 JH |
113 | int retval; |
114 | ||
115 | retval = usb_autopm_get_interface(acm->control); | |
116 | if (retval) | |
117 | return retval; | |
118 | ||
119 | retval = usb_control_msg(acm->dev, usb_sndctrlpipe(acm->dev, 0), | |
1da177e4 LT |
120 | request, USB_RT_ACM, value, |
121 | acm->control->altsetting[0].desc.bInterfaceNumber, | |
122 | buf, len, 5000); | |
bae3f4c5 | 123 | |
a5cc7ef9 | 124 | dev_dbg(&acm->control->dev, |
90744af8 LM |
125 | "%s - rq 0x%02x, val %#x, len %#x, result %d\n", |
126 | __func__, request, value, len, retval); | |
bae3f4c5 JH |
127 | |
128 | usb_autopm_put_interface(acm->control); | |
129 | ||
1da177e4 LT |
130 | return retval < 0 ? retval : 0; |
131 | } | |
132 | ||
133 | /* devices aren't required to support these requests. | |
134 | * the cdc acm descriptor tells whether they do... | |
135 | */ | |
2a8cdfde JH |
136 | static inline int acm_set_control(struct acm *acm, int control) |
137 | { | |
138 | if (acm->quirks & QUIRK_CONTROL_LINE_STATE) | |
139 | return -EOPNOTSUPP; | |
140 | ||
141 | return acm_ctrl_msg(acm, USB_CDC_REQ_SET_CONTROL_LINE_STATE, | |
142 | control, NULL, 0); | |
143 | } | |
144 | ||
1da177e4 LT |
145 | #define acm_set_line(acm, line) \ |
146 | acm_ctrl_msg(acm, USB_CDC_REQ_SET_LINE_CODING, 0, line, sizeof *(line)) | |
147 | #define acm_send_break(acm, ms) \ | |
148 | acm_ctrl_msg(acm, USB_CDC_REQ_SEND_BREAK, ms, NULL, 0) | |
149 | ||
6069e3e9 | 150 | static void acm_poison_urbs(struct acm *acm) |
ba8c931d LM |
151 | { |
152 | int i; | |
153 | ||
6069e3e9 | 154 | usb_poison_urb(acm->ctrlurb); |
ba8c931d | 155 | for (i = 0; i < ACM_NW; i++) |
6069e3e9 | 156 | usb_poison_urb(acm->wb[i].urb); |
ba8c931d | 157 | for (i = 0; i < acm->rx_buflimit; i++) |
6069e3e9 ON |
158 | usb_poison_urb(acm->read_urbs[i]); |
159 | } | |
160 | ||
161 | static void acm_unpoison_urbs(struct acm *acm) | |
162 | { | |
163 | int i; | |
164 | ||
165 | for (i = 0; i < acm->rx_buflimit; i++) | |
166 | usb_unpoison_urb(acm->read_urbs[i]); | |
167 | for (i = 0; i < ACM_NW; i++) | |
168 | usb_unpoison_urb(acm->wb[i].urb); | |
169 | usb_unpoison_urb(acm->ctrlurb); | |
ba8c931d LM |
170 | } |
171 | ||
6069e3e9 | 172 | |
884b600f ON |
173 | /* |
174 | * Write buffer management. | |
175 | * All of these assume proper locks taken by the caller. | |
176 | */ | |
177 | ||
178 | static int acm_wb_alloc(struct acm *acm) | |
179 | { | |
180 | int i, wbn; | |
181 | struct acm_wb *wb; | |
182 | ||
e4cf3aa8 | 183 | wbn = 0; |
884b600f ON |
184 | i = 0; |
185 | for (;;) { | |
186 | wb = &acm->wb[wbn]; | |
187 | if (!wb->use) { | |
37329036 | 188 | wb->use = true; |
b86b8eb6 | 189 | wb->len = 0; |
884b600f ON |
190 | return wbn; |
191 | } | |
86478944 ON |
192 | wbn = (wbn + 1) % ACM_NW; |
193 | if (++i >= ACM_NW) | |
884b600f ON |
194 | return -1; |
195 | } | |
196 | } | |
197 | ||
884b600f ON |
198 | static int acm_wb_is_avail(struct acm *acm) |
199 | { | |
200 | int i, n; | |
e5fbab51 | 201 | unsigned long flags; |
884b600f | 202 | |
86478944 | 203 | n = ACM_NW; |
e5fbab51 | 204 | spin_lock_irqsave(&acm->write_lock, flags); |
6e47e069 | 205 | for (i = 0; i < ACM_NW; i++) |
37329036 ON |
206 | if(acm->wb[i].use) |
207 | n--; | |
e5fbab51 | 208 | spin_unlock_irqrestore(&acm->write_lock, flags); |
884b600f ON |
209 | return n; |
210 | } | |
211 | ||
884b600f | 212 | /* |
ad0b65ef | 213 | * Finish write. Caller must hold acm->write_lock |
884b600f | 214 | */ |
e4cf3aa8 | 215 | static void acm_write_done(struct acm *acm, struct acm_wb *wb) |
884b600f | 216 | { |
37329036 | 217 | wb->use = false; |
11ea859d | 218 | acm->transmitting--; |
97d35f95 | 219 | usb_autopm_put_interface_async(acm->control); |
884b600f ON |
220 | } |
221 | ||
222 | /* | |
223 | * Poke write. | |
11ea859d ON |
224 | * |
225 | * the caller is responsible for locking | |
884b600f | 226 | */ |
11ea859d ON |
227 | |
228 | static int acm_start_wb(struct acm *acm, struct acm_wb *wb) | |
229 | { | |
230 | int rc; | |
231 | ||
232 | acm->transmitting++; | |
233 | ||
234 | wb->urb->transfer_buffer = wb->buf; | |
235 | wb->urb->transfer_dma = wb->dmah; | |
236 | wb->urb->transfer_buffer_length = wb->len; | |
237 | wb->urb->dev = acm->dev; | |
238 | ||
6e47e069 AC |
239 | rc = usb_submit_urb(wb->urb, GFP_ATOMIC); |
240 | if (rc < 0) { | |
6069e3e9 ON |
241 | if (rc != -EPERM) |
242 | dev_err(&acm->data->dev, | |
243 | "%s - usb_submit_urb(write bulk) failed: %d\n", | |
244 | __func__, rc); | |
11ea859d ON |
245 | acm_write_done(acm, wb); |
246 | } | |
247 | return rc; | |
248 | } | |
249 | ||
c4cabd28 ON |
250 | /* |
251 | * attributes exported through sysfs | |
252 | */ | |
7f26ee4b | 253 | static ssize_t bmCapabilities_show |
c4cabd28 ON |
254 | (struct device *dev, struct device_attribute *attr, char *buf) |
255 | { | |
256 | struct usb_interface *intf = to_usb_interface(dev); | |
257 | struct acm *acm = usb_get_intfdata(intf); | |
258 | ||
259 | return sprintf(buf, "%d", acm->ctrl_caps); | |
260 | } | |
7f26ee4b | 261 | static DEVICE_ATTR_RO(bmCapabilities); |
c4cabd28 | 262 | |
7f26ee4b | 263 | static ssize_t wCountryCodes_show |
c4cabd28 ON |
264 | (struct device *dev, struct device_attribute *attr, char *buf) |
265 | { | |
266 | struct usb_interface *intf = to_usb_interface(dev); | |
267 | struct acm *acm = usb_get_intfdata(intf); | |
268 | ||
269 | memcpy(buf, acm->country_codes, acm->country_code_size); | |
270 | return acm->country_code_size; | |
271 | } | |
272 | ||
7f26ee4b | 273 | static DEVICE_ATTR_RO(wCountryCodes); |
c4cabd28 | 274 | |
7f26ee4b | 275 | static ssize_t iCountryCodeRelDate_show |
c4cabd28 ON |
276 | (struct device *dev, struct device_attribute *attr, char *buf) |
277 | { | |
278 | struct usb_interface *intf = to_usb_interface(dev); | |
279 | struct acm *acm = usb_get_intfdata(intf); | |
280 | ||
281 | return sprintf(buf, "%d", acm->country_rel_date); | |
282 | } | |
884b600f | 283 | |
7f26ee4b | 284 | static DEVICE_ATTR_RO(iCountryCodeRelDate); |
1da177e4 LT |
285 | /* |
286 | * Interrupt handlers for various ACM device responses | |
287 | */ | |
288 | ||
ea258352 | 289 | static void acm_process_notification(struct acm *acm, unsigned char *buf) |
1da177e4 | 290 | { |
1da177e4 | 291 | int newctrl; |
5a6a62bd | 292 | int difference; |
4685be25 | 293 | unsigned long flags; |
ea258352 TH |
294 | struct usb_cdc_notification *dr = (struct usb_cdc_notification *)buf; |
295 | unsigned char *data = buf + sizeof(struct usb_cdc_notification); | |
1da177e4 | 296 | |
1da177e4 | 297 | switch (dr->bNotificationType) { |
6e47e069 | 298 | case USB_CDC_NOTIFY_NETWORK_CONNECTION: |
90744af8 LM |
299 | dev_dbg(&acm->control->dev, |
300 | "%s - network connection: %d\n", __func__, dr->wValue); | |
6e47e069 | 301 | break; |
1da177e4 | 302 | |
6e47e069 | 303 | case USB_CDC_NOTIFY_SERIAL_STATE: |
1bb9914e TH |
304 | if (le16_to_cpu(dr->wLength) != 2) { |
305 | dev_dbg(&acm->control->dev, | |
306 | "%s - malformed serial state\n", __func__); | |
307 | break; | |
308 | } | |
309 | ||
6e47e069 | 310 | newctrl = get_unaligned_le16(data); |
2d6dfd17 TH |
311 | dev_dbg(&acm->control->dev, |
312 | "%s - serial state: 0x%x\n", __func__, newctrl); | |
1da177e4 | 313 | |
aa27a094 | 314 | if (!acm->clocal && (acm->ctrlin & ~newctrl & ACM_CTRL_DCD)) { |
90744af8 LM |
315 | dev_dbg(&acm->control->dev, |
316 | "%s - calling hangup\n", __func__); | |
aa27a094 | 317 | tty_port_tty_hangup(&acm->port, false); |
6e47e069 | 318 | } |
1da177e4 | 319 | |
5a6a62bd | 320 | difference = acm->ctrlin ^ newctrl; |
4685be25 | 321 | spin_lock_irqsave(&acm->read_lock, flags); |
6e47e069 | 322 | acm->ctrlin = newctrl; |
5a6a62bd ON |
323 | acm->oldcount = acm->iocount; |
324 | ||
325 | if (difference & ACM_CTRL_DSR) | |
326 | acm->iocount.dsr++; | |
5a6a62bd ON |
327 | if (difference & ACM_CTRL_DCD) |
328 | acm->iocount.dcd++; | |
08dff274 | 329 | if (newctrl & ACM_CTRL_BRK) { |
f976d0e5 | 330 | acm->iocount.brk++; |
08dff274 ON |
331 | tty_insert_flip_char(&acm->port, 0, TTY_BREAK); |
332 | } | |
f976d0e5 TH |
333 | if (newctrl & ACM_CTRL_RI) |
334 | acm->iocount.rng++; | |
335 | if (newctrl & ACM_CTRL_FRAMING) | |
5a6a62bd | 336 | acm->iocount.frame++; |
f976d0e5 | 337 | if (newctrl & ACM_CTRL_PARITY) |
5a6a62bd | 338 | acm->iocount.parity++; |
f976d0e5 | 339 | if (newctrl & ACM_CTRL_OVERRUN) |
5a6a62bd | 340 | acm->iocount.overrun++; |
4685be25 | 341 | spin_unlock_irqrestore(&acm->read_lock, flags); |
5a6a62bd ON |
342 | |
343 | if (difference) | |
344 | wake_up_all(&acm->wioctl); | |
1da177e4 | 345 | |
5a6a62bd | 346 | break; |
1da177e4 | 347 | |
6e47e069 | 348 | default: |
a5cc7ef9 | 349 | dev_dbg(&acm->control->dev, |
1bb9914e | 350 | "%s - unknown notification %d received: index %d len %d\n", |
a5cc7ef9 | 351 | __func__, |
1bb9914e | 352 | dr->bNotificationType, dr->wIndex, dr->wLength); |
ea258352 TH |
353 | } |
354 | } | |
1bb9914e | 355 | |
ea258352 TH |
356 | /* control interface reports status changes with "interrupt" transfers */ |
357 | static void acm_ctrl_irq(struct urb *urb) | |
358 | { | |
359 | struct acm *acm = urb->context; | |
360 | struct usb_cdc_notification *dr = urb->transfer_buffer; | |
361 | unsigned int current_size = urb->actual_length; | |
362 | unsigned int expected_size, copy_size, alloc_size; | |
363 | int retval; | |
364 | int status = urb->status; | |
365 | ||
366 | switch (status) { | |
367 | case 0: | |
368 | /* success */ | |
6e47e069 | 369 | break; |
ea258352 TH |
370 | case -ECONNRESET: |
371 | case -ENOENT: | |
372 | case -ESHUTDOWN: | |
373 | /* this urb is terminated, clean up */ | |
ea258352 TH |
374 | dev_dbg(&acm->control->dev, |
375 | "%s - urb shutting down with status: %d\n", | |
376 | __func__, status); | |
377 | return; | |
378 | default: | |
379 | dev_dbg(&acm->control->dev, | |
380 | "%s - nonzero urb status received: %d\n", | |
381 | __func__, status); | |
382 | goto exit; | |
383 | } | |
384 | ||
385 | usb_mark_last_busy(acm->dev); | |
386 | ||
387 | if (acm->nb_index) | |
388 | dr = (struct usb_cdc_notification *)acm->notification_buffer; | |
389 | ||
390 | /* size = notification-header + (optional) data */ | |
391 | expected_size = sizeof(struct usb_cdc_notification) + | |
392 | le16_to_cpu(dr->wLength); | |
393 | ||
394 | if (current_size < expected_size) { | |
395 | /* notification is transmitted fragmented, reassemble */ | |
396 | if (acm->nb_size < expected_size) { | |
f4b9d8a5 | 397 | u8 *new_buffer; |
ea258352 | 398 | alloc_size = roundup_pow_of_two(expected_size); |
f4b9d8a5 TR |
399 | /* Final freeing is done on disconnect. */ |
400 | new_buffer = krealloc(acm->notification_buffer, | |
401 | alloc_size, GFP_ATOMIC); | |
402 | if (!new_buffer) { | |
403 | acm->nb_index = 0; | |
ea258352 | 404 | goto exit; |
f4b9d8a5 TR |
405 | } |
406 | ||
407 | acm->notification_buffer = new_buffer; | |
ea258352 | 408 | acm->nb_size = alloc_size; |
f4b9d8a5 | 409 | dr = (struct usb_cdc_notification *)acm->notification_buffer; |
ea258352 TH |
410 | } |
411 | ||
412 | copy_size = min(current_size, | |
413 | expected_size - acm->nb_index); | |
414 | ||
415 | memcpy(&acm->notification_buffer[acm->nb_index], | |
416 | urb->transfer_buffer, copy_size); | |
417 | acm->nb_index += copy_size; | |
418 | current_size = acm->nb_index; | |
1da177e4 | 419 | } |
ea258352 TH |
420 | |
421 | if (current_size >= expected_size) { | |
422 | /* notification complete */ | |
423 | acm_process_notification(acm, (unsigned char *)dr); | |
424 | acm->nb_index = 0; | |
425 | } | |
426 | ||
1da177e4 | 427 | exit: |
6e47e069 | 428 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
a4e7279c | 429 | if (retval && retval != -EPERM && retval != -ENODEV) |
90744af8 LM |
430 | dev_err(&acm->control->dev, |
431 | "%s - usb_submit_urb failed: %d\n", __func__, retval); | |
a4e7279c ON |
432 | else |
433 | dev_vdbg(&acm->control->dev, | |
434 | "control resubmission terminated %d\n", retval); | |
1da177e4 LT |
435 | } |
436 | ||
088c64f8 | 437 | static int acm_submit_read_urb(struct acm *acm, int index, gfp_t mem_flags) |
1da177e4 | 438 | { |
088c64f8 | 439 | int res; |
185d4058 | 440 | |
088c64f8 JH |
441 | if (!test_and_clear_bit(index, &acm->read_urbs_free)) |
442 | return 0; | |
1da177e4 | 443 | |
088c64f8 JH |
444 | res = usb_submit_urb(acm->read_urbs[index], mem_flags); |
445 | if (res) { | |
f0386c08 | 446 | if (res != -EPERM && res != -ENODEV) { |
088c64f8 | 447 | dev_err(&acm->data->dev, |
90744af8 LM |
448 | "urb %d failed submission with %d\n", |
449 | index, res); | |
a4e7279c ON |
450 | } else { |
451 | dev_vdbg(&acm->data->dev, "intended failure %d\n", res); | |
088c64f8 JH |
452 | } |
453 | set_bit(index, &acm->read_urbs_free); | |
454 | return res; | |
46e75075 ON |
455 | } else { |
456 | dev_vdbg(&acm->data->dev, "submitted urb %d\n", index); | |
11ea859d | 457 | } |
1da177e4 | 458 | |
088c64f8 JH |
459 | return 0; |
460 | } | |
1da177e4 | 461 | |
088c64f8 JH |
462 | static int acm_submit_read_urbs(struct acm *acm, gfp_t mem_flags) |
463 | { | |
464 | int res; | |
465 | int i; | |
61a87adf | 466 | |
088c64f8 JH |
467 | for (i = 0; i < acm->rx_buflimit; ++i) { |
468 | res = acm_submit_read_urb(acm, i, mem_flags); | |
469 | if (res) | |
470 | return res; | |
86478944 | 471 | } |
088c64f8 JH |
472 | |
473 | return 0; | |
1da177e4 LT |
474 | } |
475 | ||
088c64f8 | 476 | static void acm_process_read_urb(struct acm *acm, struct urb *urb) |
1da177e4 | 477 | { |
088c64f8 | 478 | if (!urb->actual_length) |
ca79b7b4 | 479 | return; |
61a87adf | 480 | |
05c7cd39 JS |
481 | tty_insert_flip_string(&acm->port, urb->transfer_buffer, |
482 | urb->actual_length); | |
2e124b4a | 483 | tty_flip_buffer_push(&acm->port); |
088c64f8 | 484 | } |
10077d4a | 485 | |
088c64f8 JH |
486 | static void acm_read_bulk_callback(struct urb *urb) |
487 | { | |
488 | struct acm_rb *rb = urb->context; | |
489 | struct acm *acm = rb->instance; | |
36e59e0d | 490 | int status = urb->status; |
764478f4 JH |
491 | bool stopped = false; |
492 | bool stalled = false; | |
a4e7279c | 493 | bool cooldown = false; |
61a87adf | 494 | |
efbe27b3 | 495 | dev_vdbg(&acm->data->dev, "got urb %d, len %d, status %d\n", |
90744af8 | 496 | rb->index, urb->actual_length, status); |
61a87adf | 497 | |
1aba579f LM |
498 | switch (status) { |
499 | case 0: | |
500 | usb_mark_last_busy(acm->dev); | |
501 | acm_process_read_urb(acm, urb); | |
502 | break; | |
503 | case -EPIPE: | |
504 | set_bit(EVENT_RX_STALL, &acm->flags); | |
764478f4 JH |
505 | stalled = true; |
506 | break; | |
1aba579f LM |
507 | case -ENOENT: |
508 | case -ECONNRESET: | |
509 | case -ESHUTDOWN: | |
510 | dev_dbg(&acm->data->dev, | |
511 | "%s - urb shutting down with status: %d\n", | |
512 | __func__, status); | |
764478f4 JH |
513 | stopped = true; |
514 | break; | |
a4e7279c ON |
515 | case -EOVERFLOW: |
516 | case -EPROTO: | |
517 | dev_dbg(&acm->data->dev, | |
518 | "%s - cooling babbling device\n", __func__); | |
519 | usb_mark_last_busy(acm->dev); | |
520 | set_bit(rb->index, &acm->urbs_in_error_delay); | |
38203b83 | 521 | set_bit(ACM_ERROR_DELAY, &acm->flags); |
a4e7279c ON |
522 | cooldown = true; |
523 | break; | |
1aba579f LM |
524 | default: |
525 | dev_dbg(&acm->data->dev, | |
526 | "%s - nonzero urb status received: %d\n", | |
527 | __func__, status); | |
528 | break; | |
61a87adf | 529 | } |
4a8ee505 | 530 | |
36e59e0d | 531 | /* |
764478f4 JH |
532 | * Make sure URB processing is done before marking as free to avoid |
533 | * racing with unthrottle() on another CPU. Matches the barriers | |
534 | * implied by the test_and_clear_bit() in acm_submit_read_urb(). | |
36e59e0d ON |
535 | */ |
536 | smp_mb__before_atomic(); | |
764478f4 JH |
537 | set_bit(rb->index, &acm->read_urbs_free); |
538 | /* | |
539 | * Make sure URB is marked as free before checking the throttled flag | |
540 | * to avoid racing with unthrottle() on another CPU. Matches the | |
541 | * smp_mb() in unthrottle(). | |
542 | */ | |
543 | smp_mb__after_atomic(); | |
544 | ||
a4e7279c | 545 | if (stopped || stalled || cooldown) { |
764478f4 | 546 | if (stalled) |
38203b83 | 547 | schedule_delayed_work(&acm->dwork, 0); |
a4e7279c ON |
548 | else if (cooldown) |
549 | schedule_delayed_work(&acm->dwork, HZ / 2); | |
764478f4 JH |
550 | return; |
551 | } | |
088c64f8 | 552 | |
0f02321e JH |
553 | if (test_bit(ACM_THROTTLED, &acm->flags)) |
554 | return; | |
555 | ||
556 | acm_submit_read_urb(acm, rb->index, GFP_ATOMIC); | |
1da177e4 LT |
557 | } |
558 | ||
559 | /* data interface wrote those outgoing bytes */ | |
7d12e780 | 560 | static void acm_write_bulk(struct urb *urb) |
1da177e4 | 561 | { |
cdc97792 | 562 | struct acm_wb *wb = urb->context; |
e5fbab51 | 563 | struct acm *acm = wb->instance; |
ad0b65ef | 564 | unsigned long flags; |
4132cd02 | 565 | int status = urb->status; |
1da177e4 | 566 | |
4132cd02 | 567 | if (status || (urb->actual_length != urb->transfer_buffer_length)) |
efbe27b3 | 568 | dev_vdbg(&acm->data->dev, "wrote len %d/%d, status %d\n", |
e5fbab51 DB |
569 | urb->actual_length, |
570 | urb->transfer_buffer_length, | |
4132cd02 | 571 | status); |
1da177e4 | 572 | |
ad0b65ef | 573 | spin_lock_irqsave(&acm->write_lock, flags); |
e4cf3aa8 | 574 | acm_write_done(acm, wb); |
ad0b65ef | 575 | spin_unlock_irqrestore(&acm->write_lock, flags); |
1aba579f | 576 | set_bit(EVENT_TTY_WAKEUP, &acm->flags); |
38203b83 | 577 | schedule_delayed_work(&acm->dwork, 0); |
1da177e4 LT |
578 | } |
579 | ||
c4028958 | 580 | static void acm_softint(struct work_struct *work) |
1da177e4 | 581 | { |
1aba579f | 582 | int i; |
38203b83 | 583 | struct acm *acm = container_of(work, struct acm, dwork.work); |
e5fbab51 | 584 | |
1aba579f | 585 | if (test_bit(EVENT_RX_STALL, &acm->flags)) { |
0afccd76 ON |
586 | smp_mb(); /* against acm_suspend() */ |
587 | if (!acm->susp_count) { | |
1aba579f LM |
588 | for (i = 0; i < acm->rx_buflimit; i++) |
589 | usb_kill_urb(acm->read_urbs[i]); | |
590 | usb_clear_halt(acm->dev, acm->in); | |
591 | acm_submit_read_urbs(acm, GFP_KERNEL); | |
0afccd76 | 592 | clear_bit(EVENT_RX_STALL, &acm->flags); |
1aba579f | 593 | } |
1aba579f LM |
594 | } |
595 | ||
a4e7279c | 596 | if (test_and_clear_bit(ACM_ERROR_DELAY, &acm->flags)) { |
97fe8099 | 597 | for (i = 0; i < acm->rx_buflimit; i++) |
a4e7279c | 598 | if (test_and_clear_bit(i, &acm->urbs_in_error_delay)) |
38203b83 | 599 | acm_submit_read_urb(acm, i, GFP_KERNEL); |
a4e7279c ON |
600 | } |
601 | ||
93e1c8a6 | 602 | if (test_and_clear_bit(EVENT_TTY_WAKEUP, &acm->flags)) |
1aba579f | 603 | tty_port_tty_wakeup(&acm->port); |
1da177e4 LT |
604 | } |
605 | ||
606 | /* | |
607 | * TTY handlers | |
608 | */ | |
609 | ||
7fb57a01 | 610 | static int acm_tty_install(struct tty_driver *driver, struct tty_struct *tty) |
1da177e4 LT |
611 | { |
612 | struct acm *acm; | |
7fb57a01 | 613 | int retval; |
1da177e4 | 614 | |
6cb4f4df | 615 | acm = acm_get_by_minor(tty->index); |
7fb57a01 HS |
616 | if (!acm) |
617 | return -ENODEV; | |
a5cc7ef9 | 618 | |
f8a8c10f | 619 | retval = tty_standard_install(driver, tty); |
7fb57a01 HS |
620 | if (retval) |
621 | goto error_init_termios; | |
10077d4a | 622 | |
eafb27fa ML |
623 | /* |
624 | * Suppress initial echoing for some devices which might send data | |
625 | * immediately after acm driver has been installed. | |
626 | */ | |
627 | if (acm->quirks & DISABLE_ECHO) | |
628 | tty->termios.c_lflag &= ~ECHO; | |
629 | ||
1da177e4 | 630 | tty->driver_data = acm; |
1da177e4 | 631 | |
7fb57a01 HS |
632 | return 0; |
633 | ||
634 | error_init_termios: | |
635 | tty_port_put(&acm->port); | |
636 | return retval; | |
637 | } | |
638 | ||
639 | static int acm_tty_open(struct tty_struct *tty, struct file *filp) | |
640 | { | |
641 | struct acm *acm = tty->driver_data; | |
642 | ||
7fb57a01 HS |
643 | return tty_port_open(&acm->port, tty, filp); |
644 | } | |
645 | ||
0943d8ea JH |
646 | static void acm_port_dtr_rts(struct tty_port *port, int raise) |
647 | { | |
648 | struct acm *acm = container_of(port, struct acm, port); | |
649 | int val; | |
650 | int res; | |
651 | ||
652 | if (raise) | |
653 | val = ACM_CTRL_DTR | ACM_CTRL_RTS; | |
654 | else | |
655 | val = 0; | |
656 | ||
657 | /* FIXME: add missing ctrlout locking throughout driver */ | |
658 | acm->ctrlout = val; | |
659 | ||
660 | res = acm_set_control(acm, val); | |
661 | if (res && (acm->ctrl_caps & USB_CDC_CAP_LINE)) | |
e4c77070 ON |
662 | /* This is broken in too many devices to spam the logs */ |
663 | dev_dbg(&acm->control->dev, "failed to set dtr/rts\n"); | |
0943d8ea JH |
664 | } |
665 | ||
7fb57a01 HS |
666 | static int acm_port_activate(struct tty_port *port, struct tty_struct *tty) |
667 | { | |
668 | struct acm *acm = container_of(port, struct acm, port); | |
669 | int retval = -ENODEV; | |
e4c36076 | 670 | int i; |
7fb57a01 | 671 | |
1365baf7 | 672 | mutex_lock(&acm->mutex); |
7fb57a01 HS |
673 | if (acm->disconnected) |
674 | goto disconnected; | |
675 | ||
676 | retval = usb_autopm_get_interface(acm->control); | |
677 | if (retval) | |
678 | goto error_get_interface; | |
679 | ||
680 | /* | |
681 | * FIXME: Why do we need this? Allocating 64K of physically contiguous | |
682 | * memory is really nasty... | |
683 | */ | |
684 | set_bit(TTY_NO_WRITE_SPLIT, &tty->flags); | |
685 | acm->control->needs_remote_wakeup = 1; | |
1365baf7 | 686 | |
1da177e4 | 687 | acm->ctrlurb->dev = acm->dev; |
8727bf68 JH |
688 | retval = usb_submit_urb(acm->ctrlurb, GFP_KERNEL); |
689 | if (retval) { | |
a5cc7ef9 JH |
690 | dev_err(&acm->control->dev, |
691 | "%s - usb_submit_urb(ctrl irq) failed\n", __func__); | |
7fb57a01 | 692 | goto error_submit_urb; |
1da177e4 LT |
693 | } |
694 | ||
24cb4502 JP |
695 | acm_tty_set_termios(tty, NULL); |
696 | ||
6c4707f3 OM |
697 | /* |
698 | * Unthrottle device in case the TTY was closed while throttled. | |
699 | */ | |
0f02321e | 700 | clear_bit(ACM_THROTTLED, &acm->flags); |
6c4707f3 | 701 | |
8727bf68 JH |
702 | retval = acm_submit_read_urbs(acm, GFP_KERNEL); |
703 | if (retval) | |
7fb57a01 | 704 | goto error_submit_read_urbs; |
2b626dc1 | 705 | |
703df329 JH |
706 | usb_autopm_put_interface(acm->control); |
707 | ||
1365baf7 | 708 | mutex_unlock(&acm->mutex); |
1da177e4 | 709 | |
7fb57a01 HS |
710 | return 0; |
711 | ||
712 | error_submit_read_urbs: | |
e4c36076 JH |
713 | for (i = 0; i < acm->rx_buflimit; i++) |
714 | usb_kill_urb(acm->read_urbs[i]); | |
7fb57a01 HS |
715 | usb_kill_urb(acm->ctrlurb); |
716 | error_submit_urb: | |
703df329 | 717 | usb_autopm_put_interface(acm->control); |
7fb57a01 HS |
718 | error_get_interface: |
719 | disconnected: | |
720 | mutex_unlock(&acm->mutex); | |
8727bf68 JH |
721 | |
722 | return usb_translate_errors(retval); | |
1da177e4 LT |
723 | } |
724 | ||
7fb57a01 | 725 | static void acm_port_destruct(struct tty_port *port) |
83ef344a | 726 | { |
7fb57a01 HS |
727 | struct acm *acm = container_of(port, struct acm, port); |
728 | ||
7fb57a01 | 729 | acm_release_minor(acm); |
83ef344a | 730 | usb_put_intf(acm->control); |
c4cabd28 | 731 | kfree(acm->country_codes); |
83ef344a | 732 | kfree(acm); |
733 | } | |
734 | ||
7fb57a01 | 735 | static void acm_port_shutdown(struct tty_port *port) |
10077d4a | 736 | { |
7fb57a01 | 737 | struct acm *acm = container_of(port, struct acm, port); |
140cb81a JH |
738 | struct urb *urb; |
739 | struct acm_wb *wb; | |
dab54c9f | 740 | |
b1d42efc JH |
741 | /* |
742 | * Need to grab write_lock to prevent race with resume, but no need to | |
743 | * hold it due to the tty-port initialised flag. | |
744 | */ | |
6069e3e9 | 745 | acm_poison_urbs(acm); |
b1d42efc JH |
746 | spin_lock_irq(&acm->write_lock); |
747 | spin_unlock_irq(&acm->write_lock); | |
748 | ||
749 | usb_autopm_get_interface_no_resume(acm->control); | |
750 | acm->control->needs_remote_wakeup = 0; | |
751 | usb_autopm_put_interface(acm->control); | |
752 | ||
89e54e44 JH |
753 | for (;;) { |
754 | urb = usb_get_from_anchor(&acm->delayed); | |
755 | if (!urb) | |
756 | break; | |
757 | wb = urb->context; | |
37329036 | 758 | wb->use = false; |
89e54e44 | 759 | usb_autopm_put_interface_async(acm->control); |
10077d4a | 760 | } |
89e54e44 | 761 | |
6069e3e9 ON |
762 | acm_unpoison_urbs(acm); |
763 | ||
7fb57a01 HS |
764 | } |
765 | ||
766 | static void acm_tty_cleanup(struct tty_struct *tty) | |
767 | { | |
768 | struct acm *acm = tty->driver_data; | |
ab57f861 | 769 | |
7fb57a01 | 770 | tty_port_put(&acm->port); |
10077d4a AC |
771 | } |
772 | ||
773 | static void acm_tty_hangup(struct tty_struct *tty) | |
774 | { | |
775 | struct acm *acm = tty->driver_data; | |
ab57f861 | 776 | |
10077d4a | 777 | tty_port_hangup(&acm->port); |
10077d4a AC |
778 | } |
779 | ||
1da177e4 LT |
780 | static void acm_tty_close(struct tty_struct *tty, struct file *filp) |
781 | { | |
782 | struct acm *acm = tty->driver_data; | |
ab57f861 | 783 | |
7fb57a01 | 784 | tty_port_close(&acm->port, tty, filp); |
1da177e4 LT |
785 | } |
786 | ||
6e47e069 AC |
787 | static int acm_tty_write(struct tty_struct *tty, |
788 | const unsigned char *buf, int count) | |
1da177e4 LT |
789 | { |
790 | struct acm *acm = tty->driver_data; | |
791 | int stat; | |
884b600f ON |
792 | unsigned long flags; |
793 | int wbn; | |
794 | struct acm_wb *wb; | |
795 | ||
1da177e4 LT |
796 | if (!count) |
797 | return 0; | |
798 | ||
efbe27b3 | 799 | dev_vdbg(&acm->data->dev, "%d bytes from tty layer\n", count); |
a5cc7ef9 | 800 | |
884b600f | 801 | spin_lock_irqsave(&acm->write_lock, flags); |
6e47e069 AC |
802 | wbn = acm_wb_alloc(acm); |
803 | if (wbn < 0) { | |
884b600f | 804 | spin_unlock_irqrestore(&acm->write_lock, flags); |
884b600f ON |
805 | return 0; |
806 | } | |
807 | wb = &acm->wb[wbn]; | |
1da177e4 | 808 | |
71c2fb03 | 809 | if (!acm->dev) { |
37329036 | 810 | wb->use = false; |
71c2fb03 GKH |
811 | spin_unlock_irqrestore(&acm->write_lock, flags); |
812 | return -ENODEV; | |
813 | } | |
814 | ||
884b600f | 815 | count = (count > acm->writesize) ? acm->writesize : count; |
efbe27b3 | 816 | dev_vdbg(&acm->data->dev, "writing %d bytes\n", count); |
884b600f ON |
817 | memcpy(wb->buf, buf, count); |
818 | wb->len = count; | |
71c2fb03 | 819 | |
183a4508 JH |
820 | stat = usb_autopm_get_interface_async(acm->control); |
821 | if (stat) { | |
37329036 | 822 | wb->use = false; |
183a4508 JH |
823 | spin_unlock_irqrestore(&acm->write_lock, flags); |
824 | return stat; | |
825 | } | |
826 | ||
71c2fb03 | 827 | if (acm->susp_count) { |
140cb81a | 828 | usb_anchor_urb(wb->urb, &acm->delayed); |
71c2fb03 | 829 | spin_unlock_irqrestore(&acm->write_lock, flags); |
140cb81a | 830 | return count; |
71c2fb03 | 831 | } |
71c2fb03 GKH |
832 | |
833 | stat = acm_start_wb(acm, wb); | |
884b600f | 834 | spin_unlock_irqrestore(&acm->write_lock, flags); |
1da177e4 | 835 | |
6e47e069 | 836 | if (stat < 0) |
1da177e4 | 837 | return stat; |
1da177e4 LT |
838 | return count; |
839 | } | |
840 | ||
841 | static int acm_tty_write_room(struct tty_struct *tty) | |
842 | { | |
843 | struct acm *acm = tty->driver_data; | |
884b600f ON |
844 | /* |
845 | * Do not let the line discipline to know that we have a reserve, | |
846 | * or it might get too enthusiastic. | |
847 | */ | |
934da463 | 848 | return acm_wb_is_avail(acm) ? acm->writesize : 0; |
1da177e4 LT |
849 | } |
850 | ||
851 | static int acm_tty_chars_in_buffer(struct tty_struct *tty) | |
852 | { | |
853 | struct acm *acm = tty->driver_data; | |
7fb57a01 HS |
854 | /* |
855 | * if the device was unplugged then any remaining characters fell out | |
856 | * of the connector ;) | |
857 | */ | |
858 | if (acm->disconnected) | |
23198fda | 859 | return 0; |
884b600f ON |
860 | /* |
861 | * This is inaccurate (overcounts), but it works. | |
862 | */ | |
86478944 | 863 | return (ACM_NW - acm_wb_is_avail(acm)) * acm->writesize; |
1da177e4 LT |
864 | } |
865 | ||
866 | static void acm_tty_throttle(struct tty_struct *tty) | |
867 | { | |
868 | struct acm *acm = tty->driver_data; | |
088c64f8 | 869 | |
0f02321e | 870 | set_bit(ACM_THROTTLED, &acm->flags); |
1da177e4 LT |
871 | } |
872 | ||
873 | static void acm_tty_unthrottle(struct tty_struct *tty) | |
874 | { | |
875 | struct acm *acm = tty->driver_data; | |
088c64f8 | 876 | |
0f02321e | 877 | clear_bit(ACM_THROTTLED, &acm->flags); |
088c64f8 | 878 | |
764478f4 JH |
879 | /* Matches the smp_mb__after_atomic() in acm_read_bulk_callback(). */ |
880 | smp_mb(); | |
881 | ||
0f02321e | 882 | acm_submit_read_urbs(acm, GFP_KERNEL); |
1da177e4 LT |
883 | } |
884 | ||
9e98966c | 885 | static int acm_tty_break_ctl(struct tty_struct *tty, int state) |
1da177e4 LT |
886 | { |
887 | struct acm *acm = tty->driver_data; | |
9e98966c | 888 | int retval; |
7fb57a01 | 889 | |
9e98966c AC |
890 | retval = acm_send_break(acm, state ? 0xffff : 0); |
891 | if (retval < 0) | |
90744af8 LM |
892 | dev_dbg(&acm->control->dev, |
893 | "%s - send break failed\n", __func__); | |
9e98966c | 894 | return retval; |
1da177e4 LT |
895 | } |
896 | ||
60b33c13 | 897 | static int acm_tty_tiocmget(struct tty_struct *tty) |
1da177e4 LT |
898 | { |
899 | struct acm *acm = tty->driver_data; | |
900 | ||
1da177e4 LT |
901 | return (acm->ctrlout & ACM_CTRL_DTR ? TIOCM_DTR : 0) | |
902 | (acm->ctrlout & ACM_CTRL_RTS ? TIOCM_RTS : 0) | | |
903 | (acm->ctrlin & ACM_CTRL_DSR ? TIOCM_DSR : 0) | | |
904 | (acm->ctrlin & ACM_CTRL_RI ? TIOCM_RI : 0) | | |
905 | (acm->ctrlin & ACM_CTRL_DCD ? TIOCM_CD : 0) | | |
906 | TIOCM_CTS; | |
907 | } | |
908 | ||
20b9d177 | 909 | static int acm_tty_tiocmset(struct tty_struct *tty, |
1da177e4 LT |
910 | unsigned int set, unsigned int clear) |
911 | { | |
912 | struct acm *acm = tty->driver_data; | |
913 | unsigned int newctrl; | |
914 | ||
1da177e4 | 915 | newctrl = acm->ctrlout; |
6e47e069 AC |
916 | set = (set & TIOCM_DTR ? ACM_CTRL_DTR : 0) | |
917 | (set & TIOCM_RTS ? ACM_CTRL_RTS : 0); | |
918 | clear = (clear & TIOCM_DTR ? ACM_CTRL_DTR : 0) | | |
919 | (clear & TIOCM_RTS ? ACM_CTRL_RTS : 0); | |
1da177e4 LT |
920 | |
921 | newctrl = (newctrl & ~clear) | set; | |
922 | ||
923 | if (acm->ctrlout == newctrl) | |
924 | return 0; | |
925 | return acm_set_control(acm, acm->ctrlout = newctrl); | |
926 | } | |
927 | ||
99f75a1f | 928 | static int get_serial_info(struct tty_struct *tty, struct serial_struct *ss) |
18c75720 | 929 | { |
99f75a1f | 930 | struct acm *acm = tty->driver_data; |
18c75720 | 931 | |
99f75a1f AV |
932 | ss->xmit_fifo_size = acm->writesize; |
933 | ss->baud_base = le32_to_cpu(acm->line.dwDTERate); | |
633e2b2d | 934 | ss->close_delay = jiffies_to_msecs(acm->port.close_delay) / 10; |
99f75a1f | 935 | ss->closing_wait = acm->port.closing_wait == ASYNC_CLOSING_WAIT_NONE ? |
ba2d8ce9 | 936 | ASYNC_CLOSING_WAIT_NONE : |
633e2b2d | 937 | jiffies_to_msecs(acm->port.closing_wait) / 10; |
99f75a1f | 938 | return 0; |
18c75720 ON |
939 | } |
940 | ||
99f75a1f | 941 | static int set_serial_info(struct tty_struct *tty, struct serial_struct *ss) |
ba2d8ce9 | 942 | { |
99f75a1f | 943 | struct acm *acm = tty->driver_data; |
ba2d8ce9 | 944 | unsigned int closing_wait, close_delay; |
b401f8c4 | 945 | unsigned int old_closing_wait, old_close_delay; |
ba2d8ce9 DW |
946 | int retval = 0; |
947 | ||
633e2b2d | 948 | close_delay = msecs_to_jiffies(ss->close_delay * 10); |
99f75a1f | 949 | closing_wait = ss->closing_wait == ASYNC_CLOSING_WAIT_NONE ? |
633e2b2d AM |
950 | ASYNC_CLOSING_WAIT_NONE : |
951 | msecs_to_jiffies(ss->closing_wait * 10); | |
ba2d8ce9 | 952 | |
b401f8c4 AM |
953 | /* we must redo the rounding here, so that the values match */ |
954 | old_close_delay = jiffies_to_msecs(acm->port.close_delay) / 10; | |
955 | old_closing_wait = acm->port.closing_wait == ASYNC_CLOSING_WAIT_NONE ? | |
956 | ASYNC_CLOSING_WAIT_NONE : | |
957 | jiffies_to_msecs(acm->port.closing_wait) / 10; | |
958 | ||
ba2d8ce9 DW |
959 | mutex_lock(&acm->port.mutex); |
960 | ||
62d65bdd MR |
961 | if (!capable(CAP_SYS_ADMIN)) { |
962 | if ((ss->close_delay != old_close_delay) || | |
963 | (ss->closing_wait != old_closing_wait)) | |
ba2d8ce9 | 964 | retval = -EPERM; |
62d65bdd MR |
965 | else |
966 | retval = -EOPNOTSUPP; | |
967 | } else { | |
968 | acm->port.close_delay = close_delay; | |
969 | acm->port.closing_wait = closing_wait; | |
970 | } | |
ba2d8ce9 DW |
971 | |
972 | mutex_unlock(&acm->port.mutex); | |
973 | return retval; | |
974 | } | |
975 | ||
5a6a62bd ON |
976 | static int wait_serial_change(struct acm *acm, unsigned long arg) |
977 | { | |
978 | int rv = 0; | |
979 | DECLARE_WAITQUEUE(wait, current); | |
980 | struct async_icount old, new; | |
981 | ||
5a6a62bd ON |
982 | do { |
983 | spin_lock_irq(&acm->read_lock); | |
984 | old = acm->oldcount; | |
985 | new = acm->iocount; | |
986 | acm->oldcount = new; | |
987 | spin_unlock_irq(&acm->read_lock); | |
988 | ||
989 | if ((arg & TIOCM_DSR) && | |
990 | old.dsr != new.dsr) | |
991 | break; | |
992 | if ((arg & TIOCM_CD) && | |
993 | old.dcd != new.dcd) | |
994 | break; | |
995 | if ((arg & TIOCM_RI) && | |
996 | old.rng != new.rng) | |
997 | break; | |
998 | ||
999 | add_wait_queue(&acm->wioctl, &wait); | |
1000 | set_current_state(TASK_INTERRUPTIBLE); | |
1001 | schedule(); | |
1002 | remove_wait_queue(&acm->wioctl, &wait); | |
1003 | if (acm->disconnected) { | |
1004 | if (arg & TIOCM_CD) | |
1005 | break; | |
1006 | else | |
1007 | rv = -ENODEV; | |
1008 | } else { | |
1009 | if (signal_pending(current)) | |
1010 | rv = -ERESTARTSYS; | |
1011 | } | |
1012 | } while (!rv); | |
1013 | ||
1014 | ||
1015 | ||
1016 | return rv; | |
1017 | } | |
1018 | ||
bb2d387c JH |
1019 | static int acm_tty_get_icount(struct tty_struct *tty, |
1020 | struct serial_icounter_struct *icount) | |
797ef137 | 1021 | { |
bb2d387c | 1022 | struct acm *acm = tty->driver_data; |
797ef137 | 1023 | |
bb2d387c JH |
1024 | icount->dsr = acm->iocount.dsr; |
1025 | icount->rng = acm->iocount.rng; | |
1026 | icount->dcd = acm->iocount.dcd; | |
1027 | icount->frame = acm->iocount.frame; | |
1028 | icount->overrun = acm->iocount.overrun; | |
1029 | icount->parity = acm->iocount.parity; | |
1030 | icount->brk = acm->iocount.brk; | |
797ef137 | 1031 | |
bb2d387c | 1032 | return 0; |
797ef137 ON |
1033 | } |
1034 | ||
6caa76b7 | 1035 | static int acm_tty_ioctl(struct tty_struct *tty, |
6e47e069 | 1036 | unsigned int cmd, unsigned long arg) |
1da177e4 | 1037 | { |
18c75720 ON |
1038 | struct acm *acm = tty->driver_data; |
1039 | int rv = -ENOIOCTLCMD; | |
1040 | ||
1041 | switch (cmd) { | |
5a6a62bd | 1042 | case TIOCMIWAIT: |
8fdbeb26 ON |
1043 | rv = usb_autopm_get_interface(acm->control); |
1044 | if (rv < 0) { | |
1045 | rv = -EIO; | |
1046 | break; | |
1047 | } | |
5a6a62bd | 1048 | rv = wait_serial_change(acm, arg); |
8fdbeb26 | 1049 | usb_autopm_put_interface(acm->control); |
5a6a62bd | 1050 | break; |
18c75720 ON |
1051 | } |
1052 | ||
1053 | return rv; | |
1da177e4 LT |
1054 | } |
1055 | ||
6e47e069 AC |
1056 | static void acm_tty_set_termios(struct tty_struct *tty, |
1057 | struct ktermios *termios_old) | |
1da177e4 LT |
1058 | { |
1059 | struct acm *acm = tty->driver_data; | |
adc8d746 | 1060 | struct ktermios *termios = &tty->termios; |
1da177e4 LT |
1061 | struct usb_cdc_line_coding newline; |
1062 | int newctrl = acm->ctrlout; | |
1063 | ||
9b80fee1 | 1064 | newline.dwDTERate = cpu_to_le32(tty_get_baud_rate(tty)); |
1da177e4 LT |
1065 | newline.bCharFormat = termios->c_cflag & CSTOPB ? 2 : 0; |
1066 | newline.bParityType = termios->c_cflag & PARENB ? | |
6e47e069 AC |
1067 | (termios->c_cflag & PARODD ? 1 : 2) + |
1068 | (termios->c_cflag & CMSPAR ? 2 : 0) : 0; | |
301a29da NB |
1069 | switch (termios->c_cflag & CSIZE) { |
1070 | case CS5: | |
1071 | newline.bDataBits = 5; | |
1072 | break; | |
1073 | case CS6: | |
1074 | newline.bDataBits = 6; | |
1075 | break; | |
1076 | case CS7: | |
1077 | newline.bDataBits = 7; | |
1078 | break; | |
1079 | case CS8: | |
1080 | default: | |
1081 | newline.bDataBits = 8; | |
1082 | break; | |
1083 | } | |
6e47e069 | 1084 | /* FIXME: Needs to clear unsupported bits in the termios */ |
1da177e4 LT |
1085 | acm->clocal = ((termios->c_cflag & CLOCAL) != 0); |
1086 | ||
4473d054 | 1087 | if (C_BAUD(tty) == B0) { |
1da177e4 LT |
1088 | newline.dwDTERate = acm->line.dwDTERate; |
1089 | newctrl &= ~ACM_CTRL_DTR; | |
4473d054 | 1090 | } else if (termios_old && (termios_old->c_cflag & CBAUD) == B0) { |
6e47e069 | 1091 | newctrl |= ACM_CTRL_DTR; |
4473d054 | 1092 | } |
1da177e4 LT |
1093 | |
1094 | if (newctrl != acm->ctrlout) | |
1095 | acm_set_control(acm, acm->ctrlout = newctrl); | |
1096 | ||
1097 | if (memcmp(&acm->line, &newline, sizeof newline)) { | |
1098 | memcpy(&acm->line, &newline, sizeof newline); | |
a5cc7ef9 JH |
1099 | dev_dbg(&acm->control->dev, "%s - set line: %d %d %d %d\n", |
1100 | __func__, | |
1101 | le32_to_cpu(newline.dwDTERate), | |
1da177e4 LT |
1102 | newline.bCharFormat, newline.bParityType, |
1103 | newline.bDataBits); | |
1104 | acm_set_line(acm, &acm->line); | |
1105 | } | |
1106 | } | |
1107 | ||
7fb57a01 | 1108 | static const struct tty_port_operations acm_port_ops = { |
0943d8ea | 1109 | .dtr_rts = acm_port_dtr_rts, |
7fb57a01 HS |
1110 | .shutdown = acm_port_shutdown, |
1111 | .activate = acm_port_activate, | |
1112 | .destruct = acm_port_destruct, | |
1113 | }; | |
1114 | ||
1da177e4 LT |
1115 | /* |
1116 | * USB probe and disconnect routines. | |
1117 | */ | |
1118 | ||
830f4021 | 1119 | /* Little helpers: write/read buffers free */ |
884b600f ON |
1120 | static void acm_write_buffers_free(struct acm *acm) |
1121 | { | |
1122 | int i; | |
1123 | struct acm_wb *wb; | |
1124 | ||
6e47e069 | 1125 | for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++) |
e4614606 | 1126 | usb_free_coherent(acm->dev, acm->writesize, wb->buf, wb->dmah); |
884b600f ON |
1127 | } |
1128 | ||
830f4021 ON |
1129 | static void acm_read_buffers_free(struct acm *acm) |
1130 | { | |
dab54c9f | 1131 | int i; |
830f4021 | 1132 | |
dab54c9f | 1133 | for (i = 0; i < acm->rx_buflimit; i++) |
e4614606 | 1134 | usb_free_coherent(acm->dev, acm->readsize, |
088c64f8 | 1135 | acm->read_buffers[i].base, acm->read_buffers[i].dma); |
830f4021 ON |
1136 | } |
1137 | ||
884b600f ON |
1138 | /* Little helper: write buffers allocate */ |
1139 | static int acm_write_buffers_alloc(struct acm *acm) | |
1140 | { | |
1141 | int i; | |
1142 | struct acm_wb *wb; | |
1143 | ||
86478944 | 1144 | for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++) { |
997ea58e | 1145 | wb->buf = usb_alloc_coherent(acm->dev, acm->writesize, GFP_KERNEL, |
884b600f ON |
1146 | &wb->dmah); |
1147 | if (!wb->buf) { | |
1148 | while (i != 0) { | |
1149 | --i; | |
1150 | --wb; | |
997ea58e | 1151 | usb_free_coherent(acm->dev, acm->writesize, |
884b600f ON |
1152 | wb->buf, wb->dmah); |
1153 | } | |
1154 | return -ENOMEM; | |
1155 | } | |
1156 | } | |
1157 | return 0; | |
1158 | } | |
1159 | ||
10077d4a AC |
1160 | static int acm_probe(struct usb_interface *intf, |
1161 | const struct usb_device_id *id) | |
1da177e4 LT |
1162 | { |
1163 | struct usb_cdc_union_desc *union_header = NULL; | |
cb42b63d | 1164 | struct usb_cdc_call_mgmt_descriptor *cmgmd = NULL; |
c6dbf554 | 1165 | unsigned char *buffer = intf->altsetting->extra; |
1da177e4 LT |
1166 | int buflen = intf->altsetting->extralen; |
1167 | struct usb_interface *control_interface; | |
1168 | struct usb_interface *data_interface; | |
a2bfb4a3 ON |
1169 | struct usb_endpoint_descriptor *epctrl = NULL; |
1170 | struct usb_endpoint_descriptor *epread = NULL; | |
1171 | struct usb_endpoint_descriptor *epwrite = NULL; | |
1da177e4 | 1172 | struct usb_device *usb_dev = interface_to_usbdev(intf); |
cb42b63d | 1173 | struct usb_cdc_parsed_header h; |
1da177e4 LT |
1174 | struct acm *acm; |
1175 | int minor; | |
6e47e069 | 1176 | int ctrlsize, readsize; |
1da177e4 | 1177 | u8 *buf; |
cb42b63d ON |
1178 | int call_intf_num = -1; |
1179 | int data_intf_num = -1; | |
1da177e4 | 1180 | unsigned long quirks; |
86478944 | 1181 | int num_rx_buf; |
61a87adf | 1182 | int i; |
a2bfb4a3 | 1183 | int combined_interfaces = 0; |
c93d8195 AK |
1184 | struct device *tty_dev; |
1185 | int rv = -ENOMEM; | |
f8d8464b | 1186 | int res; |
1da177e4 | 1187 | |
86478944 | 1188 | /* normal quirks */ |
1da177e4 | 1189 | quirks = (unsigned long)id->driver_info; |
16142655 DT |
1190 | |
1191 | if (quirks == IGNORE_DEVICE) | |
1192 | return -ENODEV; | |
1193 | ||
7309aa84 ON |
1194 | memset(&h, 0x00, sizeof(struct usb_cdc_parsed_header)); |
1195 | ||
86478944 ON |
1196 | num_rx_buf = (quirks == SINGLE_RX_URB) ? 1 : ACM_NR; |
1197 | ||
1198 | /* handle quirks deadly to normal probing*/ | |
1da177e4 LT |
1199 | if (quirks == NO_UNION_NORMAL) { |
1200 | data_interface = usb_ifnum_to_if(usb_dev, 1); | |
1201 | control_interface = usb_ifnum_to_if(usb_dev, 0); | |
8835ba4a ON |
1202 | /* we would crash */ |
1203 | if (!data_interface || !control_interface) | |
1204 | return -ENODEV; | |
1da177e4 LT |
1205 | goto skip_normal_probe; |
1206 | } | |
6e47e069 | 1207 | |
1da177e4 LT |
1208 | /* normal probing*/ |
1209 | if (!buffer) { | |
9908a32e | 1210 | dev_err(&intf->dev, "Weird descriptor references\n"); |
1da177e4 LT |
1211 | return -EINVAL; |
1212 | } | |
1213 | ||
1214 | if (!buflen) { | |
577045c0 TG |
1215 | if (intf->cur_altsetting->endpoint && |
1216 | intf->cur_altsetting->endpoint->extralen && | |
6e47e069 AC |
1217 | intf->cur_altsetting->endpoint->extra) { |
1218 | dev_dbg(&intf->dev, | |
1219 | "Seeking extra descriptors on endpoint\n"); | |
1da177e4 LT |
1220 | buflen = intf->cur_altsetting->endpoint->extralen; |
1221 | buffer = intf->cur_altsetting->endpoint->extra; | |
1222 | } else { | |
9908a32e GKH |
1223 | dev_err(&intf->dev, |
1224 | "Zero length descriptor references\n"); | |
1da177e4 LT |
1225 | return -EINVAL; |
1226 | } | |
1227 | } | |
1228 | ||
cb42b63d ON |
1229 | cdc_parse_cdc_header(&h, intf, buffer, buflen); |
1230 | union_header = h.usb_cdc_union_desc; | |
1231 | cmgmd = h.usb_cdc_call_mgmt_descriptor; | |
1232 | if (cmgmd) | |
1233 | call_intf_num = cmgmd->bDataInterface; | |
1da177e4 LT |
1234 | |
1235 | if (!union_header) { | |
bf1c6744 JH |
1236 | if (intf->cur_altsetting->desc.bNumEndpoints == 3) { |
1237 | dev_dbg(&intf->dev, "No union descriptor, assuming single interface\n"); | |
1238 | combined_interfaces = 1; | |
1239 | control_interface = data_interface = intf; | |
1240 | goto look_for_collapsed_interface; | |
1241 | } else if (call_intf_num > 0) { | |
6e47e069 | 1242 | dev_dbg(&intf->dev, "No union descriptor, using call management descriptor\n"); |
bf1c6744 JH |
1243 | data_intf_num = call_intf_num; |
1244 | data_interface = usb_ifnum_to_if(usb_dev, data_intf_num); | |
1da177e4 LT |
1245 | control_interface = intf; |
1246 | } else { | |
bf1c6744 JH |
1247 | dev_dbg(&intf->dev, "No union descriptor, giving up\n"); |
1248 | return -ENODEV; | |
1da177e4 LT |
1249 | } |
1250 | } else { | |
960c7339 JH |
1251 | int class = -1; |
1252 | ||
cb42b63d | 1253 | data_intf_num = union_header->bSlaveInterface0; |
1da177e4 | 1254 | control_interface = usb_ifnum_to_if(usb_dev, union_header->bMasterInterface0); |
cb42b63d | 1255 | data_interface = usb_ifnum_to_if(usb_dev, data_intf_num); |
960c7339 JH |
1256 | |
1257 | if (control_interface) | |
1258 | class = control_interface->cur_altsetting->desc.bInterfaceClass; | |
1259 | ||
1260 | if (class != USB_CLASS_COMM && class != USB_CLASS_CDC_DATA) { | |
1261 | dev_dbg(&intf->dev, "Broken union descriptor, assuming single interface\n"); | |
1262 | combined_interfaces = 1; | |
1263 | control_interface = data_interface = intf; | |
1264 | goto look_for_collapsed_interface; | |
1265 | } | |
403dff4e GKH |
1266 | } |
1267 | ||
1268 | if (!control_interface || !data_interface) { | |
1269 | dev_dbg(&intf->dev, "no interfaces\n"); | |
1270 | return -ENODEV; | |
1da177e4 | 1271 | } |
6e47e069 | 1272 | |
cb42b63d | 1273 | if (data_intf_num != call_intf_num) |
6e47e069 | 1274 | dev_dbg(&intf->dev, "Separate call control interface. That is not fully supported.\n"); |
1da177e4 | 1275 | |
a2bfb4a3 ON |
1276 | if (control_interface == data_interface) { |
1277 | /* some broken devices designed for windows work this way */ | |
1278 | dev_warn(&intf->dev,"Control and data interfaces are not separated!\n"); | |
1279 | combined_interfaces = 1; | |
1280 | /* a popular other OS doesn't use it */ | |
1281 | quirks |= NO_CAP_LINE; | |
1282 | if (data_interface->cur_altsetting->desc.bNumEndpoints != 3) { | |
1283 | dev_err(&intf->dev, "This needs exactly 3 endpoints\n"); | |
1284 | return -EINVAL; | |
1285 | } | |
1286 | look_for_collapsed_interface: | |
f8d8464b JH |
1287 | res = usb_find_common_endpoints(data_interface->cur_altsetting, |
1288 | &epread, &epwrite, &epctrl, NULL); | |
1289 | if (res) | |
1290 | return res; | |
1291 | ||
1292 | goto made_compressed_probe; | |
a2bfb4a3 ON |
1293 | } |
1294 | ||
1da177e4 LT |
1295 | skip_normal_probe: |
1296 | ||
1297 | /*workaround for switched interfaces */ | |
319bb4a7 JH |
1298 | if (data_interface->cur_altsetting->desc.bInterfaceClass != USB_CLASS_CDC_DATA) { |
1299 | if (control_interface->cur_altsetting->desc.bInterfaceClass == USB_CLASS_CDC_DATA) { | |
6e47e069 AC |
1300 | dev_dbg(&intf->dev, |
1301 | "Your device has switched interfaces.\n"); | |
2cfef79d | 1302 | swap(control_interface, data_interface); |
1da177e4 LT |
1303 | } else { |
1304 | return -EINVAL; | |
1305 | } | |
1306 | } | |
74da5d68 AS |
1307 | |
1308 | /* Accept probe requests only for the control interface */ | |
a2bfb4a3 | 1309 | if (!combined_interfaces && intf != control_interface) |
74da5d68 | 1310 | return -ENODEV; |
6e47e069 | 1311 | |
99f347ca SS |
1312 | if (data_interface->cur_altsetting->desc.bNumEndpoints < 2 || |
1313 | control_interface->cur_altsetting->desc.bNumEndpoints == 0) | |
1da177e4 LT |
1314 | return -EINVAL; |
1315 | ||
1316 | epctrl = &control_interface->cur_altsetting->endpoint[0].desc; | |
1317 | epread = &data_interface->cur_altsetting->endpoint[0].desc; | |
1318 | epwrite = &data_interface->cur_altsetting->endpoint[1].desc; | |
1319 | ||
1320 | ||
1321 | /* workaround for switched endpoints */ | |
45aea704 | 1322 | if (!usb_endpoint_dir_in(epread)) { |
1da177e4 | 1323 | /* descriptors are swapped */ |
6e47e069 AC |
1324 | dev_dbg(&intf->dev, |
1325 | "The data interface has switched endpoints\n"); | |
2cfef79d | 1326 | swap(epread, epwrite); |
1da177e4 | 1327 | } |
a2bfb4a3 | 1328 | made_compressed_probe: |
a5cc7ef9 | 1329 | dev_dbg(&intf->dev, "interfaces are valid\n"); |
1da177e4 | 1330 | |
6e47e069 | 1331 | acm = kzalloc(sizeof(struct acm), GFP_KERNEL); |
f8255ee1 | 1332 | if (!acm) |
4cde059a | 1333 | return -ENOMEM; |
1da177e4 | 1334 | |
cae2bc76 JK |
1335 | tty_port_init(&acm->port); |
1336 | acm->port.ops = &acm_port_ops; | |
1337 | ||
29cc8897 KM |
1338 | ctrlsize = usb_endpoint_maxp(epctrl); |
1339 | readsize = usb_endpoint_maxp(epread) * | |
6e47e069 | 1340 | (quirks == SINGLE_RX_URB ? 1 : 2); |
a2bfb4a3 | 1341 | acm->combined_interfaces = combined_interfaces; |
29cc8897 | 1342 | acm->writesize = usb_endpoint_maxp(epwrite) * 20; |
1da177e4 LT |
1343 | acm->control = control_interface; |
1344 | acm->data = data_interface; | |
c52873e5 ON |
1345 | |
1346 | usb_get_intf(acm->control); /* undone in destruct() */ | |
1347 | ||
1348 | minor = acm_alloc_minor(acm); | |
1349 | if (minor < 0) | |
4cde059a | 1350 | goto err_put_port; |
c52873e5 | 1351 | |
1da177e4 LT |
1352 | acm->minor = minor; |
1353 | acm->dev = usb_dev; | |
cb42b63d ON |
1354 | if (h.usb_cdc_acm_descriptor) |
1355 | acm->ctrl_caps = h.usb_cdc_acm_descriptor->bmCapabilities; | |
a2bfb4a3 ON |
1356 | if (quirks & NO_CAP_LINE) |
1357 | acm->ctrl_caps &= ~USB_CDC_CAP_LINE; | |
1da177e4 LT |
1358 | acm->ctrlsize = ctrlsize; |
1359 | acm->readsize = readsize; | |
86478944 | 1360 | acm->rx_buflimit = num_rx_buf; |
a4e7279c | 1361 | INIT_DELAYED_WORK(&acm->dwork, acm_softint); |
5a6a62bd | 1362 | init_waitqueue_head(&acm->wioctl); |
884b600f | 1363 | spin_lock_init(&acm->write_lock); |
61a87adf | 1364 | spin_lock_init(&acm->read_lock); |
1365baf7 | 1365 | mutex_init(&acm->mutex); |
d305394e | 1366 | if (usb_endpoint_xfer_int(epread)) { |
cf7fdd57 | 1367 | acm->bInterval = epread->bInterval; |
74bccc9b LM |
1368 | acm->in = usb_rcvintpipe(usb_dev, epread->bEndpointAddress); |
1369 | } else { | |
1370 | acm->in = usb_rcvbulkpipe(usb_dev, epread->bEndpointAddress); | |
1371 | } | |
1372 | if (usb_endpoint_xfer_int(epwrite)) | |
1373 | acm->out = usb_sndintpipe(usb_dev, epwrite->bEndpointAddress); | |
1374 | else | |
1375 | acm->out = usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress); | |
140cb81a | 1376 | init_usb_anchor(&acm->delayed); |
2a8cdfde | 1377 | acm->quirks = quirks; |
1da177e4 | 1378 | |
997ea58e | 1379 | buf = usb_alloc_coherent(usb_dev, ctrlsize, GFP_KERNEL, &acm->ctrl_dma); |
17136d49 | 1380 | if (!buf) |
4cde059a | 1381 | goto err_put_port; |
1da177e4 LT |
1382 | acm->ctrl_buffer = buf; |
1383 | ||
17136d49 | 1384 | if (acm_write_buffers_alloc(acm) < 0) |
4cde059a | 1385 | goto err_free_ctrl_buffer; |
1da177e4 LT |
1386 | |
1387 | acm->ctrlurb = usb_alloc_urb(0, GFP_KERNEL); | |
17136d49 | 1388 | if (!acm->ctrlurb) |
4cde059a | 1389 | goto err_free_write_buffers; |
17136d49 | 1390 | |
86478944 | 1391 | for (i = 0; i < num_rx_buf; i++) { |
088c64f8 JH |
1392 | struct acm_rb *rb = &(acm->read_buffers[i]); |
1393 | struct urb *urb; | |
61a87adf | 1394 | |
74f5e1ba JH |
1395 | rb->base = usb_alloc_coherent(acm->dev, readsize, GFP_KERNEL, |
1396 | &rb->dma); | |
17136d49 | 1397 | if (!rb->base) |
4cde059a | 1398 | goto err_free_read_urbs; |
088c64f8 JH |
1399 | rb->index = i; |
1400 | rb->instance = acm; | |
74f5e1ba | 1401 | |
088c64f8 | 1402 | urb = usb_alloc_urb(0, GFP_KERNEL); |
17136d49 | 1403 | if (!urb) |
4cde059a | 1404 | goto err_free_read_urbs; |
17136d49 | 1405 | |
088c64f8 JH |
1406 | urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
1407 | urb->transfer_dma = rb->dma; | |
d305394e | 1408 | if (usb_endpoint_xfer_int(epread)) |
74bccc9b | 1409 | usb_fill_int_urb(urb, acm->dev, acm->in, rb->base, |
088c64f8 JH |
1410 | acm->readsize, |
1411 | acm_read_bulk_callback, rb, | |
1412 | acm->bInterval); | |
74bccc9b LM |
1413 | else |
1414 | usb_fill_bulk_urb(urb, acm->dev, acm->in, rb->base, | |
088c64f8 JH |
1415 | acm->readsize, |
1416 | acm_read_bulk_callback, rb); | |
61a87adf | 1417 | |
088c64f8 JH |
1418 | acm->read_urbs[i] = urb; |
1419 | __set_bit(i, &acm->read_urbs_free); | |
61a87adf | 1420 | } |
6e47e069 | 1421 | for (i = 0; i < ACM_NW; i++) { |
e4cf3aa8 DE |
1422 | struct acm_wb *snd = &(acm->wb[i]); |
1423 | ||
6e47e069 | 1424 | snd->urb = usb_alloc_urb(0, GFP_KERNEL); |
f8255ee1 | 1425 | if (!snd->urb) |
4cde059a | 1426 | goto err_free_write_urbs; |
e4cf3aa8 | 1427 | |
5186ffee | 1428 | if (usb_endpoint_xfer_int(epwrite)) |
74bccc9b | 1429 | usb_fill_int_urb(snd->urb, usb_dev, acm->out, |
5186ffee AL |
1430 | NULL, acm->writesize, acm_write_bulk, snd, epwrite->bInterval); |
1431 | else | |
74bccc9b | 1432 | usb_fill_bulk_urb(snd->urb, usb_dev, acm->out, |
5186ffee | 1433 | NULL, acm->writesize, acm_write_bulk, snd); |
e4cf3aa8 | 1434 | snd->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
ffdb1e36 LB |
1435 | if (quirks & SEND_ZERO_PACKET) |
1436 | snd->urb->transfer_flags |= URB_ZERO_PACKET; | |
e4cf3aa8 | 1437 | snd->instance = acm; |
1da177e4 LT |
1438 | } |
1439 | ||
6e47e069 | 1440 | usb_set_intfdata(intf, acm); |
c4cabd28 ON |
1441 | |
1442 | i = device_create_file(&intf->dev, &dev_attr_bmCapabilities); | |
1443 | if (i < 0) | |
4cde059a | 1444 | goto err_free_write_urbs; |
c4cabd28 | 1445 | |
cb42b63d ON |
1446 | if (h.usb_cdc_country_functional_desc) { /* export the country data */ |
1447 | struct usb_cdc_country_functional_desc * cfd = | |
1448 | h.usb_cdc_country_functional_desc; | |
1449 | ||
c4cabd28 ON |
1450 | acm->country_codes = kmalloc(cfd->bLength - 4, GFP_KERNEL); |
1451 | if (!acm->country_codes) | |
1452 | goto skip_countries; | |
1453 | acm->country_code_size = cfd->bLength - 4; | |
6e47e069 AC |
1454 | memcpy(acm->country_codes, (u8 *)&cfd->wCountyCode0, |
1455 | cfd->bLength - 4); | |
c4cabd28 ON |
1456 | acm->country_rel_date = cfd->iCountryCodeRelDate; |
1457 | ||
1458 | i = device_create_file(&intf->dev, &dev_attr_wCountryCodes); | |
1459 | if (i < 0) { | |
1460 | kfree(acm->country_codes); | |
e7c8e860 JL |
1461 | acm->country_codes = NULL; |
1462 | acm->country_code_size = 0; | |
c4cabd28 ON |
1463 | goto skip_countries; |
1464 | } | |
1465 | ||
6e47e069 AC |
1466 | i = device_create_file(&intf->dev, |
1467 | &dev_attr_iCountryCodeRelDate); | |
c4cabd28 | 1468 | if (i < 0) { |
c2572b78 | 1469 | device_remove_file(&intf->dev, &dev_attr_wCountryCodes); |
c4cabd28 | 1470 | kfree(acm->country_codes); |
e7c8e860 JL |
1471 | acm->country_codes = NULL; |
1472 | acm->country_code_size = 0; | |
c4cabd28 ON |
1473 | goto skip_countries; |
1474 | } | |
1475 | } | |
1476 | ||
1477 | skip_countries: | |
6e47e069 | 1478 | usb_fill_int_urb(acm->ctrlurb, usb_dev, |
a2bfb4a3 ON |
1479 | usb_rcvintpipe(usb_dev, epctrl->bEndpointAddress), |
1480 | acm->ctrl_buffer, ctrlsize, acm_ctrl_irq, acm, | |
1481 | /* works around buggy devices */ | |
d102e78f | 1482 | epctrl->bInterval ? epctrl->bInterval : 16); |
1da177e4 LT |
1483 | acm->ctrlurb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
1484 | acm->ctrlurb->transfer_dma = acm->ctrl_dma; | |
ea258352 TH |
1485 | acm->notification_buffer = NULL; |
1486 | acm->nb_index = 0; | |
1487 | acm->nb_size = 0; | |
1da177e4 | 1488 | |
1da177e4 LT |
1489 | dev_info(&intf->dev, "ttyACM%d: USB ACM device\n", minor); |
1490 | ||
1da177e4 LT |
1491 | acm->line.dwDTERate = cpu_to_le32(9600); |
1492 | acm->line.bDataBits = 8; | |
1493 | acm_set_line(acm, &acm->line); | |
1494 | ||
0b2b23ca JH |
1495 | if (!acm->combined_interfaces) { |
1496 | rv = usb_driver_claim_interface(&acm_driver, data_interface, acm); | |
1497 | if (rv) | |
1498 | goto err_remove_files; | |
1499 | } | |
1da177e4 | 1500 | |
c93d8195 | 1501 | tty_dev = tty_port_register_device(&acm->port, acm_tty_driver, minor, |
734cc178 | 1502 | &control_interface->dev); |
c93d8195 AK |
1503 | if (IS_ERR(tty_dev)) { |
1504 | rv = PTR_ERR(tty_dev); | |
4cde059a | 1505 | goto err_release_data_interface; |
c93d8195 | 1506 | } |
1da177e4 | 1507 | |
15bf722e | 1508 | if (quirks & CLEAR_HALT_CONDITIONS) { |
74bccc9b LM |
1509 | usb_clear_halt(usb_dev, acm->in); |
1510 | usb_clear_halt(usb_dev, acm->out); | |
15bf722e AS |
1511 | } |
1512 | ||
c4cabd28 | 1513 | return 0; |
4cde059a JH |
1514 | |
1515 | err_release_data_interface: | |
4e49bf37 JH |
1516 | if (!acm->combined_interfaces) { |
1517 | /* Clear driver data so that disconnect() returns early. */ | |
1518 | usb_set_intfdata(data_interface, NULL); | |
1519 | usb_driver_release_interface(&acm_driver, data_interface); | |
1520 | } | |
0b2b23ca | 1521 | err_remove_files: |
c93d8195 AK |
1522 | if (acm->country_codes) { |
1523 | device_remove_file(&acm->control->dev, | |
1524 | &dev_attr_wCountryCodes); | |
1525 | device_remove_file(&acm->control->dev, | |
1526 | &dev_attr_iCountryCodeRelDate); | |
1527 | } | |
1528 | device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities); | |
4cde059a | 1529 | err_free_write_urbs: |
e4cf3aa8 DE |
1530 | for (i = 0; i < ACM_NW; i++) |
1531 | usb_free_urb(acm->wb[i].urb); | |
4cde059a | 1532 | err_free_read_urbs: |
86478944 | 1533 | for (i = 0; i < num_rx_buf; i++) |
088c64f8 | 1534 | usb_free_urb(acm->read_urbs[i]); |
74f5e1ba | 1535 | acm_read_buffers_free(acm); |
1da177e4 | 1536 | usb_free_urb(acm->ctrlurb); |
4cde059a | 1537 | err_free_write_buffers: |
884b600f | 1538 | acm_write_buffers_free(acm); |
4cde059a | 1539 | err_free_ctrl_buffer: |
cae2bc76 | 1540 | usb_free_coherent(usb_dev, ctrlsize, acm->ctrl_buffer, acm->ctrl_dma); |
4cde059a | 1541 | err_put_port: |
cae2bc76 | 1542 | tty_port_put(&acm->port); |
4cde059a | 1543 | |
c93d8195 | 1544 | return rv; |
1da177e4 LT |
1545 | } |
1546 | ||
1547 | static void acm_disconnect(struct usb_interface *intf) | |
1548 | { | |
c4cabd28 | 1549 | struct acm *acm = usb_get_intfdata(intf); |
10077d4a | 1550 | struct tty_struct *tty; |
f2924d4b | 1551 | int i; |
7fb57a01 | 1552 | |
672c4e18 DB |
1553 | /* sibling interface is already cleaning up */ |
1554 | if (!acm) | |
86067eea | 1555 | return; |
672c4e18 | 1556 | |
7fb57a01 | 1557 | acm->disconnected = true; |
6069e3e9 ON |
1558 | /* |
1559 | * there is a circular dependency. acm_softint() can resubmit | |
1560 | * the URBs in error handling so we need to block any | |
1561 | * submission right away | |
1562 | */ | |
1563 | acm_poison_urbs(acm); | |
1564 | mutex_lock(&acm->mutex); | |
6e47e069 | 1565 | if (acm->country_codes) { |
74da5d68 AS |
1566 | device_remove_file(&acm->control->dev, |
1567 | &dev_attr_wCountryCodes); | |
1568 | device_remove_file(&acm->control->dev, | |
1569 | &dev_attr_iCountryCodeRelDate); | |
c4cabd28 | 1570 | } |
5a6a62bd | 1571 | wake_up_all(&acm->wioctl); |
74da5d68 | 1572 | device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities); |
86067eea ON |
1573 | usb_set_intfdata(acm->control, NULL); |
1574 | usb_set_intfdata(acm->data, NULL); | |
7fb57a01 HS |
1575 | mutex_unlock(&acm->mutex); |
1576 | ||
1577 | tty = tty_port_tty_get(&acm->port); | |
1578 | if (tty) { | |
1579 | tty_vhangup(tty); | |
1580 | tty_kref_put(tty); | |
1581 | } | |
1da177e4 | 1582 | |
a4e7279c | 1583 | cancel_delayed_work_sync(&acm->dwork); |
1da177e4 | 1584 | |
cb25505f JH |
1585 | tty_unregister_device(acm_tty_driver, acm->minor); |
1586 | ||
f2924d4b RI |
1587 | usb_free_urb(acm->ctrlurb); |
1588 | for (i = 0; i < ACM_NW; i++) | |
1589 | usb_free_urb(acm->wb[i].urb); | |
1590 | for (i = 0; i < acm->rx_buflimit; i++) | |
1591 | usb_free_urb(acm->read_urbs[i]); | |
884b600f | 1592 | acm_write_buffers_free(acm); |
e4614606 | 1593 | usb_free_coherent(acm->dev, acm->ctrlsize, acm->ctrl_buffer, acm->ctrl_dma); |
830f4021 | 1594 | acm_read_buffers_free(acm); |
1da177e4 | 1595 | |
ea258352 TH |
1596 | kfree(acm->notification_buffer); |
1597 | ||
a2bfb4a3 ON |
1598 | if (!acm->combined_interfaces) |
1599 | usb_driver_release_interface(&acm_driver, intf == acm->control ? | |
830f4021 | 1600 | acm->data : acm->control); |
1da177e4 | 1601 | |
7fb57a01 | 1602 | tty_port_put(&acm->port); |
1da177e4 LT |
1603 | } |
1604 | ||
35758589 | 1605 | #ifdef CONFIG_PM |
1365baf7 ON |
1606 | static int acm_suspend(struct usb_interface *intf, pm_message_t message) |
1607 | { | |
1608 | struct acm *acm = usb_get_intfdata(intf); | |
11ea859d ON |
1609 | int cnt; |
1610 | ||
bbf0cb3e | 1611 | spin_lock_irq(&acm->write_lock); |
5b1b0b81 | 1612 | if (PMSG_IS_AUTO(message)) { |
5a345c20 | 1613 | if (acm->transmitting) { |
bbf0cb3e | 1614 | spin_unlock_irq(&acm->write_lock); |
11ea859d | 1615 | return -EBUSY; |
5a345c20 | 1616 | } |
11ea859d | 1617 | } |
11ea859d | 1618 | cnt = acm->susp_count++; |
bbf0cb3e | 1619 | spin_unlock_irq(&acm->write_lock); |
1365baf7 | 1620 | |
11ea859d | 1621 | if (cnt) |
1365baf7 | 1622 | return 0; |
1365baf7 | 1623 | |
6069e3e9 | 1624 | acm_poison_urbs(acm); |
a4e7279c ON |
1625 | cancel_delayed_work_sync(&acm->dwork); |
1626 | acm->urbs_in_error_delay = 0; | |
1365baf7 | 1627 | |
1365baf7 ON |
1628 | return 0; |
1629 | } | |
1630 | ||
1631 | static int acm_resume(struct usb_interface *intf) | |
1632 | { | |
1633 | struct acm *acm = usb_get_intfdata(intf); | |
140cb81a | 1634 | struct urb *urb; |
1365baf7 ON |
1635 | int rv = 0; |
1636 | ||
6069e3e9 | 1637 | acm_unpoison_urbs(acm); |
bbf0cb3e | 1638 | spin_lock_irq(&acm->write_lock); |
11ea859d | 1639 | |
e144ed28 JH |
1640 | if (--acm->susp_count) |
1641 | goto out; | |
1365baf7 | 1642 | |
d41861ca | 1643 | if (tty_port_initialized(&acm->port)) { |
e144ed28 | 1644 | rv = usb_submit_urb(acm->ctrlurb, GFP_ATOMIC); |
97d35f95 | 1645 | |
140cb81a JH |
1646 | for (;;) { |
1647 | urb = usb_get_from_anchor(&acm->delayed); | |
1648 | if (!urb) | |
1649 | break; | |
1650 | ||
1651 | acm_start_wb(acm, urb->context); | |
97d35f95 ON |
1652 | } |
1653 | ||
1654 | /* | |
1655 | * delayed error checking because we must | |
1656 | * do the write path at all cost | |
1657 | */ | |
1365baf7 | 1658 | if (rv < 0) |
e144ed28 | 1659 | goto out; |
1365baf7 | 1660 | |
e144ed28 | 1661 | rv = acm_submit_read_urbs(acm, GFP_ATOMIC); |
1365baf7 | 1662 | } |
e144ed28 | 1663 | out: |
bbf0cb3e | 1664 | spin_unlock_irq(&acm->write_lock); |
1365baf7 | 1665 | |
1365baf7 ON |
1666 | return rv; |
1667 | } | |
35758589 | 1668 | |
a91b0c50 FL |
1669 | static int acm_reset_resume(struct usb_interface *intf) |
1670 | { | |
1671 | struct acm *acm = usb_get_intfdata(intf); | |
a91b0c50 | 1672 | |
d41861ca | 1673 | if (tty_port_initialized(&acm->port)) |
aa27a094 | 1674 | tty_port_tty_hangup(&acm->port, false); |
7fb57a01 | 1675 | |
a91b0c50 FL |
1676 | return acm_resume(intf); |
1677 | } | |
1678 | ||
35758589 | 1679 | #endif /* CONFIG_PM */ |
c1479a92 | 1680 | |
1aba579f LM |
1681 | static int acm_pre_reset(struct usb_interface *intf) |
1682 | { | |
1683 | struct acm *acm = usb_get_intfdata(intf); | |
1684 | ||
1685 | clear_bit(EVENT_RX_STALL, &acm->flags); | |
9397940e | 1686 | acm->nb_index = 0; /* pending control transfers are lost */ |
1aba579f LM |
1687 | |
1688 | return 0; | |
1689 | } | |
1690 | ||
c1479a92 AT |
1691 | #define NOKIA_PCSUITE_ACM_INFO(x) \ |
1692 | USB_DEVICE_AND_INTERFACE_INFO(0x0421, x, \ | |
1693 | USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, \ | |
1694 | USB_CDC_ACM_PROTO_VENDOR) | |
1695 | ||
4035e456 TG |
1696 | #define SAMSUNG_PCSUITE_ACM_INFO(x) \ |
1697 | USB_DEVICE_AND_INTERFACE_INFO(0x04e7, x, \ | |
1698 | USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, \ | |
1699 | USB_CDC_ACM_PROTO_VENDOR) | |
1700 | ||
1da177e4 LT |
1701 | /* |
1702 | * USB driver structure. | |
1703 | */ | |
1704 | ||
6ef4852b | 1705 | static const struct usb_device_id acm_ids[] = { |
1da177e4 | 1706 | /* quirky and broken devices */ |
03894573 JT |
1707 | { USB_DEVICE(0x0424, 0x274e), /* Microchip Technology, Inc. (formerly SMSC) */ |
1708 | .driver_info = DISABLE_ECHO, }, /* DISABLE ECHO in termios flag */ | |
b20b1618 BG |
1709 | { USB_DEVICE(0x076d, 0x0006), /* Denso Cradle CU-321 */ |
1710 | .driver_info = NO_UNION_NORMAL, },/* has no union descriptor */ | |
3b59d16c DC |
1711 | { USB_DEVICE(0x17ef, 0x7000), /* Lenovo USB modem */ |
1712 | .driver_info = NO_UNION_NORMAL, },/* has no union descriptor */ | |
1da177e4 LT |
1713 | { USB_DEVICE(0x0870, 0x0001), /* Metricom GS Modem */ |
1714 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1715 | }, | |
6d853c9e CB |
1716 | { USB_DEVICE(0x045b, 0x023c), /* Renesas USB Download mode */ |
1717 | .driver_info = DISABLE_ECHO, /* Don't echo banner */ | |
1718 | }, | |
1719 | { USB_DEVICE(0x045b, 0x0248), /* Renesas USB Download mode */ | |
1720 | .driver_info = DISABLE_ECHO, /* Don't echo banner */ | |
1721 | }, | |
1722 | { USB_DEVICE(0x045b, 0x024D), /* Renesas USB Download mode */ | |
1723 | .driver_info = DISABLE_ECHO, /* Don't echo banner */ | |
1724 | }, | |
b0e2a705 AA |
1725 | { USB_DEVICE(0x0e8d, 0x0003), /* FIREFLY, MediaTek Inc; andrey.arapov@gmail.com */ |
1726 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1727 | }, | |
eafb27fa ML |
1728 | { USB_DEVICE(0x0e8d, 0x2000), /* MediaTek Inc Preloader */ |
1729 | .driver_info = DISABLE_ECHO, /* DISABLE ECHO in termios flag */ | |
1730 | }, | |
0f9c7b4a AL |
1731 | { USB_DEVICE(0x0e8d, 0x3329), /* MediaTek Inc GPS */ |
1732 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1733 | }, | |
8753e65e MO |
1734 | { USB_DEVICE(0x0482, 0x0203), /* KYOCERA AH-K3001V */ |
1735 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1736 | }, | |
91a9c921 CM |
1737 | { USB_DEVICE(0x079b, 0x000f), /* BT On-Air USB MODEM */ |
1738 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1739 | }, | |
7abcf20b AC |
1740 | { USB_DEVICE(0x0ace, 0x1602), /* ZyDAS 56K USB MODEM */ |
1741 | .driver_info = SINGLE_RX_URB, | |
1742 | }, | |
86478944 ON |
1743 | { USB_DEVICE(0x0ace, 0x1608), /* ZyDAS 56K USB MODEM */ |
1744 | .driver_info = SINGLE_RX_URB, /* firmware bug */ | |
1745 | }, | |
3dd2ae81 ON |
1746 | { USB_DEVICE(0x0ace, 0x1611), /* ZyDAS 56K USB MODEM - new version */ |
1747 | .driver_info = SINGLE_RX_URB, /* firmware bug */ | |
1748 | }, | |
df1cc78a ON |
1749 | { USB_DEVICE(0x11ca, 0x0201), /* VeriFone Mx870 Gadget Serial */ |
1750 | .driver_info = SINGLE_RX_URB, | |
1751 | }, | |
4a762569 HY |
1752 | { USB_DEVICE(0x1965, 0x0018), /* Uniden UBC125XLT */ |
1753 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1754 | }, | |
9be8456c ON |
1755 | { USB_DEVICE(0x22b8, 0x7000), /* Motorola Q Phone */ |
1756 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1757 | }, | |
6149ed5e IM |
1758 | { USB_DEVICE(0x0803, 0x3095), /* Zoom Telephonics Model 3095F USB MODEM */ |
1759 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1760 | }, | |
c8fd2c37 ES |
1761 | { USB_DEVICE(0x0572, 0x1321), /* Conexant USB MODEM CX93010 */ |
1762 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1763 | }, | |
c89c60e9 AC |
1764 | { USB_DEVICE(0x0572, 0x1324), /* Conexant USB MODEM RD02-D400 */ |
1765 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1766 | }, | |
cab98a0a XK |
1767 | { USB_DEVICE(0x0572, 0x1328), /* Shiro / Aztech USB MODEM UM-3100 */ |
1768 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1769 | }, | |
63529eaa MJ |
1770 | { USB_DEVICE(0x0572, 0x1349), /* Hiro (Conexant) USB MODEM H50228 */ |
1771 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1772 | }, | |
2a8cdfde JH |
1773 | { USB_DEVICE(0x20df, 0x0001), /* Simtec Electronics Entropy Key */ |
1774 | .driver_info = QUIRK_CONTROL_LINE_STATE, }, | |
cf84a691 | 1775 | { USB_DEVICE(0x2184, 0x001c) }, /* GW Instek AFG-2225 */ |
30121604 | 1776 | { USB_DEVICE(0x2184, 0x0036) }, /* GW Instek AFG-125 */ |
155df65a DT |
1777 | { USB_DEVICE(0x22b8, 0x6425), /* Motorola MOTOMAGX phones */ |
1778 | }, | |
6abff5dc KH |
1779 | /* Motorola H24 HSPA module: */ |
1780 | { USB_DEVICE(0x22b8, 0x2d91) }, /* modem */ | |
895d240d MU |
1781 | { USB_DEVICE(0x22b8, 0x2d92), /* modem + diagnostics */ |
1782 | .driver_info = NO_UNION_NORMAL, /* handle only modem interface */ | |
1783 | }, | |
1784 | { USB_DEVICE(0x22b8, 0x2d93), /* modem + AT port */ | |
1785 | .driver_info = NO_UNION_NORMAL, /* handle only modem interface */ | |
1786 | }, | |
1787 | { USB_DEVICE(0x22b8, 0x2d95), /* modem + AT port + diagnostics */ | |
1788 | .driver_info = NO_UNION_NORMAL, /* handle only modem interface */ | |
1789 | }, | |
1790 | { USB_DEVICE(0x22b8, 0x2d96), /* modem + NMEA */ | |
1791 | .driver_info = NO_UNION_NORMAL, /* handle only modem interface */ | |
1792 | }, | |
1793 | { USB_DEVICE(0x22b8, 0x2d97), /* modem + diagnostics + NMEA */ | |
1794 | .driver_info = NO_UNION_NORMAL, /* handle only modem interface */ | |
1795 | }, | |
1796 | { USB_DEVICE(0x22b8, 0x2d99), /* modem + AT port + NMEA */ | |
1797 | .driver_info = NO_UNION_NORMAL, /* handle only modem interface */ | |
1798 | }, | |
1799 | { USB_DEVICE(0x22b8, 0x2d9a), /* modem + AT port + diagnostics + NMEA */ | |
1800 | .driver_info = NO_UNION_NORMAL, /* handle only modem interface */ | |
1801 | }, | |
6abff5dc | 1802 | |
c332b4e1 AR |
1803 | { USB_DEVICE(0x0572, 0x1329), /* Hummingbird huc56s (Conexant) */ |
1804 | .driver_info = NO_UNION_NORMAL, /* union descriptor misplaced on | |
1805 | data interface instead of | |
1806 | communications interface. | |
1807 | Maybe we should define a new | |
1808 | quirk for this. */ | |
1809 | }, | |
e7d491a1 JCR |
1810 | { USB_DEVICE(0x0572, 0x1340), /* Conexant CX93010-2x UCMxx */ |
1811 | .driver_info = NO_UNION_NORMAL, | |
1812 | }, | |
036915a7 DL |
1813 | { USB_DEVICE(0x05f9, 0x4002), /* PSC Scanning, Magellan 800i */ |
1814 | .driver_info = NO_UNION_NORMAL, | |
1815 | }, | |
1f17c502 KK |
1816 | { USB_DEVICE(0x1bbb, 0x0003), /* Alcatel OT-I650 */ |
1817 | .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */ | |
1818 | }, | |
c3baa19b RN |
1819 | { USB_DEVICE(0x1576, 0x03b1), /* Maretron USB100 */ |
1820 | .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */ | |
1821 | }, | |
fe855789 JH |
1822 | { USB_DEVICE(0xfff0, 0x0100), /* DATECS FP-2000 */ |
1823 | .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */ | |
1824 | }, | |
765fb2f1 MS |
1825 | { USB_DEVICE(0x09d8, 0x0320), /* Elatec GmbH TWN3 */ |
1826 | .driver_info = NO_UNION_NORMAL, /* has misplaced union descriptor */ | |
1827 | }, | |
1445cbe4 LR |
1828 | { USB_DEVICE(0x0ca6, 0xa050), /* Castles VEGA3000 */ |
1829 | .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */ | |
1830 | }, | |
9be8456c | 1831 | |
15bf722e AS |
1832 | { USB_DEVICE(0x2912, 0x0001), /* ATOL FPrint */ |
1833 | .driver_info = CLEAR_HALT_CONDITIONS, | |
1834 | }, | |
1835 | ||
c1479a92 AT |
1836 | /* Nokia S60 phones expose two ACM channels. The first is |
1837 | * a modem and is picked up by the standard AT-command | |
1838 | * information below. The second is 'vendor-specific' but | |
1839 | * is treated as a serial device at the S60 end, so we want | |
1840 | * to expose it on Linux too. */ | |
1841 | { NOKIA_PCSUITE_ACM_INFO(0x042D), }, /* Nokia 3250 */ | |
1842 | { NOKIA_PCSUITE_ACM_INFO(0x04D8), }, /* Nokia 5500 Sport */ | |
1843 | { NOKIA_PCSUITE_ACM_INFO(0x04C9), }, /* Nokia E50 */ | |
1844 | { NOKIA_PCSUITE_ACM_INFO(0x0419), }, /* Nokia E60 */ | |
1845 | { NOKIA_PCSUITE_ACM_INFO(0x044D), }, /* Nokia E61 */ | |
1846 | { NOKIA_PCSUITE_ACM_INFO(0x0001), }, /* Nokia E61i */ | |
1847 | { NOKIA_PCSUITE_ACM_INFO(0x0475), }, /* Nokia E62 */ | |
1848 | { NOKIA_PCSUITE_ACM_INFO(0x0508), }, /* Nokia E65 */ | |
1849 | { NOKIA_PCSUITE_ACM_INFO(0x0418), }, /* Nokia E70 */ | |
1850 | { NOKIA_PCSUITE_ACM_INFO(0x0425), }, /* Nokia N71 */ | |
1851 | { NOKIA_PCSUITE_ACM_INFO(0x0486), }, /* Nokia N73 */ | |
1852 | { NOKIA_PCSUITE_ACM_INFO(0x04DF), }, /* Nokia N75 */ | |
1853 | { NOKIA_PCSUITE_ACM_INFO(0x000e), }, /* Nokia N77 */ | |
1854 | { NOKIA_PCSUITE_ACM_INFO(0x0445), }, /* Nokia N80 */ | |
1855 | { NOKIA_PCSUITE_ACM_INFO(0x042F), }, /* Nokia N91 & N91 8GB */ | |
1856 | { NOKIA_PCSUITE_ACM_INFO(0x048E), }, /* Nokia N92 */ | |
1857 | { NOKIA_PCSUITE_ACM_INFO(0x0420), }, /* Nokia N93 */ | |
1858 | { NOKIA_PCSUITE_ACM_INFO(0x04E6), }, /* Nokia N93i */ | |
1859 | { NOKIA_PCSUITE_ACM_INFO(0x04B2), }, /* Nokia 5700 XpressMusic */ | |
1860 | { NOKIA_PCSUITE_ACM_INFO(0x0134), }, /* Nokia 6110 Navigator (China) */ | |
1861 | { NOKIA_PCSUITE_ACM_INFO(0x046E), }, /* Nokia 6110 Navigator */ | |
1862 | { NOKIA_PCSUITE_ACM_INFO(0x002f), }, /* Nokia 6120 classic & */ | |
1863 | { NOKIA_PCSUITE_ACM_INFO(0x0088), }, /* Nokia 6121 classic */ | |
1864 | { NOKIA_PCSUITE_ACM_INFO(0x00fc), }, /* Nokia 6124 classic */ | |
1865 | { NOKIA_PCSUITE_ACM_INFO(0x0042), }, /* Nokia E51 */ | |
1866 | { NOKIA_PCSUITE_ACM_INFO(0x00b0), }, /* Nokia E66 */ | |
1867 | { NOKIA_PCSUITE_ACM_INFO(0x00ab), }, /* Nokia E71 */ | |
1868 | { NOKIA_PCSUITE_ACM_INFO(0x0481), }, /* Nokia N76 */ | |
1869 | { NOKIA_PCSUITE_ACM_INFO(0x0007), }, /* Nokia N81 & N81 8GB */ | |
1870 | { NOKIA_PCSUITE_ACM_INFO(0x0071), }, /* Nokia N82 */ | |
1871 | { NOKIA_PCSUITE_ACM_INFO(0x04F0), }, /* Nokia N95 & N95-3 NAM */ | |
1872 | { NOKIA_PCSUITE_ACM_INFO(0x0070), }, /* Nokia N95 8GB */ | |
1873 | { NOKIA_PCSUITE_ACM_INFO(0x00e9), }, /* Nokia 5320 XpressMusic */ | |
1874 | { NOKIA_PCSUITE_ACM_INFO(0x0099), }, /* Nokia 6210 Navigator, RM-367 */ | |
1875 | { NOKIA_PCSUITE_ACM_INFO(0x0128), }, /* Nokia 6210 Navigator, RM-419 */ | |
1876 | { NOKIA_PCSUITE_ACM_INFO(0x008f), }, /* Nokia 6220 Classic */ | |
1877 | { NOKIA_PCSUITE_ACM_INFO(0x00a0), }, /* Nokia 6650 */ | |
1878 | { NOKIA_PCSUITE_ACM_INFO(0x007b), }, /* Nokia N78 */ | |
1879 | { NOKIA_PCSUITE_ACM_INFO(0x0094), }, /* Nokia N85 */ | |
1880 | { NOKIA_PCSUITE_ACM_INFO(0x003a), }, /* Nokia N96 & N96-3 */ | |
1881 | { NOKIA_PCSUITE_ACM_INFO(0x00e9), }, /* Nokia 5320 XpressMusic */ | |
1882 | { NOKIA_PCSUITE_ACM_INFO(0x0108), }, /* Nokia 5320 XpressMusic 2G */ | |
1883 | { NOKIA_PCSUITE_ACM_INFO(0x01f5), }, /* Nokia N97, RM-505 */ | |
83a4eae9 | 1884 | { NOKIA_PCSUITE_ACM_INFO(0x02e3), }, /* Nokia 5230, RM-588 */ |
4035e456 TG |
1885 | { NOKIA_PCSUITE_ACM_INFO(0x0178), }, /* Nokia E63 */ |
1886 | { NOKIA_PCSUITE_ACM_INFO(0x010e), }, /* Nokia E75 */ | |
1887 | { NOKIA_PCSUITE_ACM_INFO(0x02d9), }, /* Nokia 6760 Slide */ | |
1888 | { NOKIA_PCSUITE_ACM_INFO(0x01d0), }, /* Nokia E52 */ | |
1889 | { NOKIA_PCSUITE_ACM_INFO(0x0223), }, /* Nokia E72 */ | |
1890 | { NOKIA_PCSUITE_ACM_INFO(0x0275), }, /* Nokia X6 */ | |
1891 | { NOKIA_PCSUITE_ACM_INFO(0x026c), }, /* Nokia N97 Mini */ | |
1892 | { NOKIA_PCSUITE_ACM_INFO(0x0154), }, /* Nokia 5800 XpressMusic */ | |
1893 | { NOKIA_PCSUITE_ACM_INFO(0x04ce), }, /* Nokia E90 */ | |
1894 | { NOKIA_PCSUITE_ACM_INFO(0x01d4), }, /* Nokia E55 */ | |
721d92fc | 1895 | { NOKIA_PCSUITE_ACM_INFO(0x0302), }, /* Nokia N8 */ |
4061fde2 TG |
1896 | { NOKIA_PCSUITE_ACM_INFO(0x0335), }, /* Nokia E7 */ |
1897 | { NOKIA_PCSUITE_ACM_INFO(0x03cd), }, /* Nokia C7 */ | |
4035e456 | 1898 | { SAMSUNG_PCSUITE_ACM_INFO(0x6651), }, /* Samsung GTi8510 (INNOV8) */ |
c1479a92 | 1899 | |
65e52f41 DP |
1900 | /* Support for Owen devices */ |
1901 | { USB_DEVICE(0x03eb, 0x0030), }, /* Owen SI30 */ | |
1902 | ||
c1479a92 AT |
1903 | /* NOTE: non-Nokia COMM/ACM/0xff is likely MSFT RNDIS... NOT a modem! */ |
1904 | ||
16142655 DT |
1905 | #if IS_ENABLED(CONFIG_INPUT_IMS_PCU) |
1906 | { USB_DEVICE(0x04d8, 0x0082), /* Application mode */ | |
1907 | .driver_info = IGNORE_DEVICE, | |
1908 | }, | |
1909 | { USB_DEVICE(0x04d8, 0x0083), /* Bootloader mode */ | |
1910 | .driver_info = IGNORE_DEVICE, | |
1911 | }, | |
1912 | #endif | |
1913 | ||
6eeb775a SY |
1914 | #if IS_ENABLED(CONFIG_IR_TOY) |
1915 | { USB_DEVICE(0x04d8, 0xfd08), | |
1916 | .driver_info = IGNORE_DEVICE, | |
1917 | }, | |
0ffc7653 SY |
1918 | |
1919 | { USB_DEVICE(0x04d8, 0xf58b), | |
1920 | .driver_info = IGNORE_DEVICE, | |
1921 | }, | |
6eeb775a SY |
1922 | #endif |
1923 | ||
5f6225a7 MCC |
1924 | #if IS_ENABLED(CONFIG_USB_SERIAL_XR) |
1925 | { USB_DEVICE(0x04e2, 0x1410), /* Ignore XR21V141X USB to Serial converter */ | |
1926 | .driver_info = IGNORE_DEVICE, | |
1927 | }, | |
1928 | #endif | |
1929 | ||
e912e685 ON |
1930 | /*Samsung phone in firmware update mode */ |
1931 | { USB_DEVICE(0x04e8, 0x685d), | |
1932 | .driver_info = IGNORE_DEVICE, | |
1933 | }, | |
1934 | ||
f33a7f72 JJ |
1935 | /* Exclude Infineon Flash Loader utility */ |
1936 | { USB_DEVICE(0x058b, 0x0041), | |
1937 | .driver_info = IGNORE_DEVICE, | |
1938 | }, | |
1939 | ||
a4f88430 VM |
1940 | /* Exclude ETAS ES58x */ |
1941 | { USB_DEVICE(0x108c, 0x0159), /* ES581.4 */ | |
1942 | .driver_info = IGNORE_DEVICE, | |
1943 | }, | |
1944 | { USB_DEVICE(0x108c, 0x0168), /* ES582.1 */ | |
1945 | .driver_info = IGNORE_DEVICE, | |
1946 | }, | |
1947 | { USB_DEVICE(0x108c, 0x0169), /* ES584.1 */ | |
1948 | .driver_info = IGNORE_DEVICE, | |
1949 | }, | |
1950 | ||
34aabf91 DP |
1951 | { USB_DEVICE(0x1bc7, 0x0021), /* Telit 3G ACM only composition */ |
1952 | .driver_info = SEND_ZERO_PACKET, | |
1953 | }, | |
1954 | { USB_DEVICE(0x1bc7, 0x0023), /* Telit 3G ACM + ECM composition */ | |
1955 | .driver_info = SEND_ZERO_PACKET, | |
1956 | }, | |
1957 | ||
4d8654e8 YW |
1958 | /* Exclude Goodix Fingerprint Reader */ |
1959 | { USB_DEVICE(0x27c6, 0x5395), | |
1960 | .driver_info = IGNORE_DEVICE, | |
1961 | }, | |
1962 | ||
5b239f0a PC |
1963 | /* control interfaces without any protocol set */ |
1964 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
1965 | USB_CDC_PROTO_NONE) }, | |
1966 | ||
1da177e4 LT |
1967 | /* control interfaces with various AT-command sets */ |
1968 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
1969 | USB_CDC_ACM_PROTO_AT_V25TER) }, | |
1970 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
1971 | USB_CDC_ACM_PROTO_AT_PCCA101) }, | |
1972 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
1973 | USB_CDC_ACM_PROTO_AT_PCCA101_WAKE) }, | |
1974 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
1975 | USB_CDC_ACM_PROTO_AT_GSM) }, | |
1976 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, | |
6e47e069 | 1977 | USB_CDC_ACM_PROTO_AT_3G) }, |
1da177e4 LT |
1978 | { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, |
1979 | USB_CDC_ACM_PROTO_AT_CDMA) }, | |
1980 | ||
ffdb1e36 LB |
1981 | { USB_DEVICE(0x1519, 0x0452), /* Intel 7260 modem */ |
1982 | .driver_info = SEND_ZERO_PACKET, | |
1983 | }, | |
1984 | ||
1da177e4 LT |
1985 | { } |
1986 | }; | |
1987 | ||
6e47e069 | 1988 | MODULE_DEVICE_TABLE(usb, acm_ids); |
1da177e4 LT |
1989 | |
1990 | static struct usb_driver acm_driver = { | |
1da177e4 LT |
1991 | .name = "cdc_acm", |
1992 | .probe = acm_probe, | |
1993 | .disconnect = acm_disconnect, | |
35758589 | 1994 | #ifdef CONFIG_PM |
1365baf7 ON |
1995 | .suspend = acm_suspend, |
1996 | .resume = acm_resume, | |
a91b0c50 | 1997 | .reset_resume = acm_reset_resume, |
35758589 | 1998 | #endif |
1aba579f | 1999 | .pre_reset = acm_pre_reset, |
1da177e4 | 2000 | .id_table = acm_ids, |
35758589 | 2001 | #ifdef CONFIG_PM |
1365baf7 | 2002 | .supports_autosuspend = 1, |
35758589 | 2003 | #endif |
e1f12eb6 | 2004 | .disable_hub_initiated_lpm = 1, |
1da177e4 LT |
2005 | }; |
2006 | ||
2007 | /* | |
2008 | * TTY driver structures. | |
2009 | */ | |
2010 | ||
b68e31d0 | 2011 | static const struct tty_operations acm_ops = { |
7fb57a01 | 2012 | .install = acm_tty_install, |
1da177e4 LT |
2013 | .open = acm_tty_open, |
2014 | .close = acm_tty_close, | |
7fb57a01 | 2015 | .cleanup = acm_tty_cleanup, |
10077d4a | 2016 | .hangup = acm_tty_hangup, |
1da177e4 LT |
2017 | .write = acm_tty_write, |
2018 | .write_room = acm_tty_write_room, | |
2019 | .ioctl = acm_tty_ioctl, | |
2020 | .throttle = acm_tty_throttle, | |
2021 | .unthrottle = acm_tty_unthrottle, | |
2022 | .chars_in_buffer = acm_tty_chars_in_buffer, | |
2023 | .break_ctl = acm_tty_break_ctl, | |
2024 | .set_termios = acm_tty_set_termios, | |
2025 | .tiocmget = acm_tty_tiocmget, | |
2026 | .tiocmset = acm_tty_tiocmset, | |
99f75a1f AV |
2027 | .get_serial = get_serial_info, |
2028 | .set_serial = set_serial_info, | |
bb2d387c | 2029 | .get_icount = acm_tty_get_icount, |
1da177e4 LT |
2030 | }; |
2031 | ||
2032 | /* | |
2033 | * Init / exit. | |
2034 | */ | |
2035 | ||
2036 | static int __init acm_init(void) | |
2037 | { | |
2038 | int retval; | |
2039 | acm_tty_driver = alloc_tty_driver(ACM_TTY_MINORS); | |
2040 | if (!acm_tty_driver) | |
2041 | return -ENOMEM; | |
1da177e4 LT |
2042 | acm_tty_driver->driver_name = "acm", |
2043 | acm_tty_driver->name = "ttyACM", | |
1da177e4 LT |
2044 | acm_tty_driver->major = ACM_TTY_MAJOR, |
2045 | acm_tty_driver->minor_start = 0, | |
2046 | acm_tty_driver->type = TTY_DRIVER_TYPE_SERIAL, | |
2047 | acm_tty_driver->subtype = SERIAL_TYPE_NORMAL, | |
331b8319 | 2048 | acm_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; |
1da177e4 | 2049 | acm_tty_driver->init_termios = tty_std_termios; |
6e47e069 AC |
2050 | acm_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | |
2051 | HUPCL | CLOCAL; | |
1da177e4 LT |
2052 | tty_set_operations(acm_tty_driver, &acm_ops); |
2053 | ||
2054 | retval = tty_register_driver(acm_tty_driver); | |
2055 | if (retval) { | |
2056 | put_tty_driver(acm_tty_driver); | |
2057 | return retval; | |
2058 | } | |
2059 | ||
2060 | retval = usb_register(&acm_driver); | |
2061 | if (retval) { | |
2062 | tty_unregister_driver(acm_tty_driver); | |
2063 | put_tty_driver(acm_tty_driver); | |
2064 | return retval; | |
2065 | } | |
2066 | ||
a2c7b935 | 2067 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "\n"); |
1da177e4 LT |
2068 | |
2069 | return 0; | |
2070 | } | |
2071 | ||
2072 | static void __exit acm_exit(void) | |
2073 | { | |
2074 | usb_deregister(&acm_driver); | |
2075 | tty_unregister_driver(acm_tty_driver); | |
2076 | put_tty_driver(acm_tty_driver); | |
91b72560 | 2077 | idr_destroy(&acm_minors); |
1da177e4 LT |
2078 | } |
2079 | ||
2080 | module_init(acm_init); | |
2081 | module_exit(acm_exit); | |
2082 | ||
6e47e069 AC |
2083 | MODULE_AUTHOR(DRIVER_AUTHOR); |
2084 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 | 2085 | MODULE_LICENSE("GPL"); |
e766aeb8 | 2086 | MODULE_ALIAS_CHARDEV_MAJOR(ACM_TTY_MAJOR); |