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 | 53 | static void acm_tty_set_termios(struct tty_struct *tty, |
a8c11c15 | 54 | const struct ktermios *termios_old); |
24cb4502 | 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, | |
df574080 | 122 | buf, len, USB_CTRL_SET_TIMEOUT); |
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 | |
7333c87f | 314 | if (!acm->clocal && (acm->ctrlin & ~newctrl & USB_CDC_SERIAL_STATE_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 | ||
7333c87f | 325 | if (difference & USB_CDC_SERIAL_STATE_DSR) |
5a6a62bd | 326 | acm->iocount.dsr++; |
7333c87f | 327 | if (difference & USB_CDC_SERIAL_STATE_DCD) |
5a6a62bd | 328 | acm->iocount.dcd++; |
7333c87f | 329 | if (newctrl & USB_CDC_SERIAL_STATE_BREAK) { |
f976d0e5 | 330 | acm->iocount.brk++; |
08dff274 ON |
331 | tty_insert_flip_char(&acm->port, 0, TTY_BREAK); |
332 | } | |
7333c87f | 333 | if (newctrl & USB_CDC_SERIAL_STATE_RING_SIGNAL) |
f976d0e5 | 334 | acm->iocount.rng++; |
7333c87f | 335 | if (newctrl & USB_CDC_SERIAL_STATE_FRAMING) |
5a6a62bd | 336 | acm->iocount.frame++; |
7333c87f | 337 | if (newctrl & USB_CDC_SERIAL_STATE_PARITY) |
5a6a62bd | 338 | acm->iocount.parity++; |
7333c87f | 339 | if (newctrl & USB_CDC_SERIAL_STATE_OVERRUN) |
5a6a62bd | 340 | acm->iocount.overrun++; |
4685be25 | 341 | spin_unlock_irqrestore(&acm->read_lock, flags); |
5a6a62bd | 342 | |
7333c87f | 343 | if (newctrl & USB_CDC_SERIAL_STATE_BREAK) |
58fc1daa JH |
344 | tty_flip_buffer_push(&acm->port); |
345 | ||
5a6a62bd ON |
346 | if (difference) |
347 | wake_up_all(&acm->wioctl); | |
1da177e4 | 348 | |
5a6a62bd | 349 | break; |
1da177e4 | 350 | |
6e47e069 | 351 | default: |
a5cc7ef9 | 352 | dev_dbg(&acm->control->dev, |
1bb9914e | 353 | "%s - unknown notification %d received: index %d len %d\n", |
a5cc7ef9 | 354 | __func__, |
1bb9914e | 355 | dr->bNotificationType, dr->wIndex, dr->wLength); |
ea258352 TH |
356 | } |
357 | } | |
1bb9914e | 358 | |
ea258352 TH |
359 | /* control interface reports status changes with "interrupt" transfers */ |
360 | static void acm_ctrl_irq(struct urb *urb) | |
361 | { | |
362 | struct acm *acm = urb->context; | |
363 | struct usb_cdc_notification *dr = urb->transfer_buffer; | |
364 | unsigned int current_size = urb->actual_length; | |
365 | unsigned int expected_size, copy_size, alloc_size; | |
366 | int retval; | |
367 | int status = urb->status; | |
368 | ||
369 | switch (status) { | |
370 | case 0: | |
371 | /* success */ | |
6e47e069 | 372 | break; |
ea258352 TH |
373 | case -ECONNRESET: |
374 | case -ENOENT: | |
375 | case -ESHUTDOWN: | |
376 | /* this urb is terminated, clean up */ | |
ea258352 TH |
377 | dev_dbg(&acm->control->dev, |
378 | "%s - urb shutting down with status: %d\n", | |
379 | __func__, status); | |
380 | return; | |
381 | default: | |
382 | dev_dbg(&acm->control->dev, | |
383 | "%s - nonzero urb status received: %d\n", | |
384 | __func__, status); | |
385 | goto exit; | |
386 | } | |
387 | ||
388 | usb_mark_last_busy(acm->dev); | |
389 | ||
390 | if (acm->nb_index) | |
391 | dr = (struct usb_cdc_notification *)acm->notification_buffer; | |
392 | ||
393 | /* size = notification-header + (optional) data */ | |
394 | expected_size = sizeof(struct usb_cdc_notification) + | |
395 | le16_to_cpu(dr->wLength); | |
396 | ||
397 | if (current_size < expected_size) { | |
398 | /* notification is transmitted fragmented, reassemble */ | |
399 | if (acm->nb_size < expected_size) { | |
f4b9d8a5 | 400 | u8 *new_buffer; |
ea258352 | 401 | alloc_size = roundup_pow_of_two(expected_size); |
f4b9d8a5 TR |
402 | /* Final freeing is done on disconnect. */ |
403 | new_buffer = krealloc(acm->notification_buffer, | |
404 | alloc_size, GFP_ATOMIC); | |
405 | if (!new_buffer) { | |
406 | acm->nb_index = 0; | |
ea258352 | 407 | goto exit; |
f4b9d8a5 TR |
408 | } |
409 | ||
410 | acm->notification_buffer = new_buffer; | |
ea258352 | 411 | acm->nb_size = alloc_size; |
f4b9d8a5 | 412 | dr = (struct usb_cdc_notification *)acm->notification_buffer; |
ea258352 TH |
413 | } |
414 | ||
415 | copy_size = min(current_size, | |
416 | expected_size - acm->nb_index); | |
417 | ||
418 | memcpy(&acm->notification_buffer[acm->nb_index], | |
419 | urb->transfer_buffer, copy_size); | |
420 | acm->nb_index += copy_size; | |
421 | current_size = acm->nb_index; | |
1da177e4 | 422 | } |
ea258352 TH |
423 | |
424 | if (current_size >= expected_size) { | |
425 | /* notification complete */ | |
426 | acm_process_notification(acm, (unsigned char *)dr); | |
427 | acm->nb_index = 0; | |
428 | } | |
429 | ||
1da177e4 | 430 | exit: |
6e47e069 | 431 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
a4e7279c | 432 | if (retval && retval != -EPERM && retval != -ENODEV) |
90744af8 LM |
433 | dev_err(&acm->control->dev, |
434 | "%s - usb_submit_urb failed: %d\n", __func__, retval); | |
a4e7279c ON |
435 | else |
436 | dev_vdbg(&acm->control->dev, | |
437 | "control resubmission terminated %d\n", retval); | |
1da177e4 LT |
438 | } |
439 | ||
088c64f8 | 440 | static int acm_submit_read_urb(struct acm *acm, int index, gfp_t mem_flags) |
1da177e4 | 441 | { |
088c64f8 | 442 | int res; |
185d4058 | 443 | |
088c64f8 JH |
444 | if (!test_and_clear_bit(index, &acm->read_urbs_free)) |
445 | return 0; | |
1da177e4 | 446 | |
088c64f8 JH |
447 | res = usb_submit_urb(acm->read_urbs[index], mem_flags); |
448 | if (res) { | |
f0386c08 | 449 | if (res != -EPERM && res != -ENODEV) { |
088c64f8 | 450 | dev_err(&acm->data->dev, |
90744af8 LM |
451 | "urb %d failed submission with %d\n", |
452 | index, res); | |
a4e7279c ON |
453 | } else { |
454 | dev_vdbg(&acm->data->dev, "intended failure %d\n", res); | |
088c64f8 JH |
455 | } |
456 | set_bit(index, &acm->read_urbs_free); | |
457 | return res; | |
46e75075 ON |
458 | } else { |
459 | dev_vdbg(&acm->data->dev, "submitted urb %d\n", index); | |
11ea859d | 460 | } |
1da177e4 | 461 | |
088c64f8 JH |
462 | return 0; |
463 | } | |
1da177e4 | 464 | |
088c64f8 JH |
465 | static int acm_submit_read_urbs(struct acm *acm, gfp_t mem_flags) |
466 | { | |
467 | int res; | |
468 | int i; | |
61a87adf | 469 | |
088c64f8 JH |
470 | for (i = 0; i < acm->rx_buflimit; ++i) { |
471 | res = acm_submit_read_urb(acm, i, mem_flags); | |
472 | if (res) | |
473 | return res; | |
86478944 | 474 | } |
088c64f8 JH |
475 | |
476 | return 0; | |
1da177e4 LT |
477 | } |
478 | ||
088c64f8 | 479 | static void acm_process_read_urb(struct acm *acm, struct urb *urb) |
1da177e4 | 480 | { |
65a205e6 JH |
481 | unsigned long flags; |
482 | ||
088c64f8 | 483 | if (!urb->actual_length) |
ca79b7b4 | 484 | return; |
61a87adf | 485 | |
65a205e6 | 486 | spin_lock_irqsave(&acm->read_lock, flags); |
05c7cd39 JS |
487 | tty_insert_flip_string(&acm->port, urb->transfer_buffer, |
488 | urb->actual_length); | |
65a205e6 JH |
489 | spin_unlock_irqrestore(&acm->read_lock, flags); |
490 | ||
2e124b4a | 491 | tty_flip_buffer_push(&acm->port); |
088c64f8 | 492 | } |
10077d4a | 493 | |
088c64f8 JH |
494 | static void acm_read_bulk_callback(struct urb *urb) |
495 | { | |
496 | struct acm_rb *rb = urb->context; | |
497 | struct acm *acm = rb->instance; | |
36e59e0d | 498 | int status = urb->status; |
764478f4 JH |
499 | bool stopped = false; |
500 | bool stalled = false; | |
a4e7279c | 501 | bool cooldown = false; |
61a87adf | 502 | |
efbe27b3 | 503 | dev_vdbg(&acm->data->dev, "got urb %d, len %d, status %d\n", |
90744af8 | 504 | rb->index, urb->actual_length, status); |
61a87adf | 505 | |
1aba579f LM |
506 | switch (status) { |
507 | case 0: | |
508 | usb_mark_last_busy(acm->dev); | |
509 | acm_process_read_urb(acm, urb); | |
510 | break; | |
511 | case -EPIPE: | |
512 | set_bit(EVENT_RX_STALL, &acm->flags); | |
764478f4 JH |
513 | stalled = true; |
514 | break; | |
1aba579f LM |
515 | case -ENOENT: |
516 | case -ECONNRESET: | |
517 | case -ESHUTDOWN: | |
518 | dev_dbg(&acm->data->dev, | |
519 | "%s - urb shutting down with status: %d\n", | |
520 | __func__, status); | |
764478f4 JH |
521 | stopped = true; |
522 | break; | |
a4e7279c ON |
523 | case -EOVERFLOW: |
524 | case -EPROTO: | |
525 | dev_dbg(&acm->data->dev, | |
526 | "%s - cooling babbling device\n", __func__); | |
527 | usb_mark_last_busy(acm->dev); | |
528 | set_bit(rb->index, &acm->urbs_in_error_delay); | |
38203b83 | 529 | set_bit(ACM_ERROR_DELAY, &acm->flags); |
a4e7279c ON |
530 | cooldown = true; |
531 | break; | |
1aba579f LM |
532 | default: |
533 | dev_dbg(&acm->data->dev, | |
534 | "%s - nonzero urb status received: %d\n", | |
535 | __func__, status); | |
536 | break; | |
61a87adf | 537 | } |
4a8ee505 | 538 | |
36e59e0d | 539 | /* |
764478f4 JH |
540 | * Make sure URB processing is done before marking as free to avoid |
541 | * racing with unthrottle() on another CPU. Matches the barriers | |
542 | * implied by the test_and_clear_bit() in acm_submit_read_urb(). | |
36e59e0d ON |
543 | */ |
544 | smp_mb__before_atomic(); | |
764478f4 JH |
545 | set_bit(rb->index, &acm->read_urbs_free); |
546 | /* | |
547 | * Make sure URB is marked as free before checking the throttled flag | |
548 | * to avoid racing with unthrottle() on another CPU. Matches the | |
549 | * smp_mb() in unthrottle(). | |
550 | */ | |
551 | smp_mb__after_atomic(); | |
552 | ||
a4e7279c | 553 | if (stopped || stalled || cooldown) { |
764478f4 | 554 | if (stalled) |
38203b83 | 555 | schedule_delayed_work(&acm->dwork, 0); |
a4e7279c ON |
556 | else if (cooldown) |
557 | schedule_delayed_work(&acm->dwork, HZ / 2); | |
764478f4 JH |
558 | return; |
559 | } | |
088c64f8 | 560 | |
0f02321e JH |
561 | if (test_bit(ACM_THROTTLED, &acm->flags)) |
562 | return; | |
563 | ||
564 | acm_submit_read_urb(acm, rb->index, GFP_ATOMIC); | |
1da177e4 LT |
565 | } |
566 | ||
567 | /* data interface wrote those outgoing bytes */ | |
7d12e780 | 568 | static void acm_write_bulk(struct urb *urb) |
1da177e4 | 569 | { |
cdc97792 | 570 | struct acm_wb *wb = urb->context; |
e5fbab51 | 571 | struct acm *acm = wb->instance; |
ad0b65ef | 572 | unsigned long flags; |
4132cd02 | 573 | int status = urb->status; |
1da177e4 | 574 | |
4132cd02 | 575 | if (status || (urb->actual_length != urb->transfer_buffer_length)) |
efbe27b3 | 576 | dev_vdbg(&acm->data->dev, "wrote len %d/%d, status %d\n", |
e5fbab51 DB |
577 | urb->actual_length, |
578 | urb->transfer_buffer_length, | |
4132cd02 | 579 | status); |
1da177e4 | 580 | |
ad0b65ef | 581 | spin_lock_irqsave(&acm->write_lock, flags); |
e4cf3aa8 | 582 | acm_write_done(acm, wb); |
ad0b65ef | 583 | spin_unlock_irqrestore(&acm->write_lock, flags); |
1aba579f | 584 | set_bit(EVENT_TTY_WAKEUP, &acm->flags); |
38203b83 | 585 | schedule_delayed_work(&acm->dwork, 0); |
1da177e4 LT |
586 | } |
587 | ||
c4028958 | 588 | static void acm_softint(struct work_struct *work) |
1da177e4 | 589 | { |
1aba579f | 590 | int i; |
38203b83 | 591 | struct acm *acm = container_of(work, struct acm, dwork.work); |
e5fbab51 | 592 | |
1aba579f | 593 | if (test_bit(EVENT_RX_STALL, &acm->flags)) { |
0afccd76 ON |
594 | smp_mb(); /* against acm_suspend() */ |
595 | if (!acm->susp_count) { | |
1aba579f LM |
596 | for (i = 0; i < acm->rx_buflimit; i++) |
597 | usb_kill_urb(acm->read_urbs[i]); | |
598 | usb_clear_halt(acm->dev, acm->in); | |
599 | acm_submit_read_urbs(acm, GFP_KERNEL); | |
0afccd76 | 600 | clear_bit(EVENT_RX_STALL, &acm->flags); |
1aba579f | 601 | } |
1aba579f LM |
602 | } |
603 | ||
a4e7279c | 604 | if (test_and_clear_bit(ACM_ERROR_DELAY, &acm->flags)) { |
97fe8099 | 605 | for (i = 0; i < acm->rx_buflimit; i++) |
a4e7279c | 606 | if (test_and_clear_bit(i, &acm->urbs_in_error_delay)) |
38203b83 | 607 | acm_submit_read_urb(acm, i, GFP_KERNEL); |
a4e7279c ON |
608 | } |
609 | ||
93e1c8a6 | 610 | if (test_and_clear_bit(EVENT_TTY_WAKEUP, &acm->flags)) |
1aba579f | 611 | tty_port_tty_wakeup(&acm->port); |
1da177e4 LT |
612 | } |
613 | ||
614 | /* | |
615 | * TTY handlers | |
616 | */ | |
617 | ||
7fb57a01 | 618 | static int acm_tty_install(struct tty_driver *driver, struct tty_struct *tty) |
1da177e4 LT |
619 | { |
620 | struct acm *acm; | |
7fb57a01 | 621 | int retval; |
1da177e4 | 622 | |
6cb4f4df | 623 | acm = acm_get_by_minor(tty->index); |
7fb57a01 HS |
624 | if (!acm) |
625 | return -ENODEV; | |
a5cc7ef9 | 626 | |
f8a8c10f | 627 | retval = tty_standard_install(driver, tty); |
7fb57a01 HS |
628 | if (retval) |
629 | goto error_init_termios; | |
10077d4a | 630 | |
eafb27fa ML |
631 | /* |
632 | * Suppress initial echoing for some devices which might send data | |
633 | * immediately after acm driver has been installed. | |
634 | */ | |
635 | if (acm->quirks & DISABLE_ECHO) | |
636 | tty->termios.c_lflag &= ~ECHO; | |
637 | ||
1da177e4 | 638 | tty->driver_data = acm; |
1da177e4 | 639 | |
7fb57a01 HS |
640 | return 0; |
641 | ||
642 | error_init_termios: | |
643 | tty_port_put(&acm->port); | |
644 | return retval; | |
645 | } | |
646 | ||
647 | static int acm_tty_open(struct tty_struct *tty, struct file *filp) | |
648 | { | |
649 | struct acm *acm = tty->driver_data; | |
650 | ||
7fb57a01 HS |
651 | return tty_port_open(&acm->port, tty, filp); |
652 | } | |
653 | ||
5701cb8b | 654 | static void acm_port_dtr_rts(struct tty_port *port, bool active) |
0943d8ea JH |
655 | { |
656 | struct acm *acm = container_of(port, struct acm, port); | |
657 | int val; | |
658 | int res; | |
659 | ||
5701cb8b | 660 | if (active) |
3fb975e6 | 661 | val = USB_CDC_CTRL_DTR | USB_CDC_CTRL_RTS; |
0943d8ea JH |
662 | else |
663 | val = 0; | |
664 | ||
665 | /* FIXME: add missing ctrlout locking throughout driver */ | |
666 | acm->ctrlout = val; | |
667 | ||
668 | res = acm_set_control(acm, val); | |
669 | if (res && (acm->ctrl_caps & USB_CDC_CAP_LINE)) | |
e4c77070 ON |
670 | /* This is broken in too many devices to spam the logs */ |
671 | dev_dbg(&acm->control->dev, "failed to set dtr/rts\n"); | |
0943d8ea JH |
672 | } |
673 | ||
7fb57a01 HS |
674 | static int acm_port_activate(struct tty_port *port, struct tty_struct *tty) |
675 | { | |
676 | struct acm *acm = container_of(port, struct acm, port); | |
677 | int retval = -ENODEV; | |
e4c36076 | 678 | int i; |
7fb57a01 | 679 | |
1365baf7 | 680 | mutex_lock(&acm->mutex); |
7fb57a01 HS |
681 | if (acm->disconnected) |
682 | goto disconnected; | |
683 | ||
684 | retval = usb_autopm_get_interface(acm->control); | |
685 | if (retval) | |
686 | goto error_get_interface; | |
687 | ||
7fb57a01 HS |
688 | set_bit(TTY_NO_WRITE_SPLIT, &tty->flags); |
689 | acm->control->needs_remote_wakeup = 1; | |
1365baf7 | 690 | |
1da177e4 | 691 | acm->ctrlurb->dev = acm->dev; |
8727bf68 JH |
692 | retval = usb_submit_urb(acm->ctrlurb, GFP_KERNEL); |
693 | if (retval) { | |
a5cc7ef9 JH |
694 | dev_err(&acm->control->dev, |
695 | "%s - usb_submit_urb(ctrl irq) failed\n", __func__); | |
7fb57a01 | 696 | goto error_submit_urb; |
1da177e4 LT |
697 | } |
698 | ||
24cb4502 JP |
699 | acm_tty_set_termios(tty, NULL); |
700 | ||
6c4707f3 OM |
701 | /* |
702 | * Unthrottle device in case the TTY was closed while throttled. | |
703 | */ | |
0f02321e | 704 | clear_bit(ACM_THROTTLED, &acm->flags); |
6c4707f3 | 705 | |
8727bf68 JH |
706 | retval = acm_submit_read_urbs(acm, GFP_KERNEL); |
707 | if (retval) | |
7fb57a01 | 708 | goto error_submit_read_urbs; |
2b626dc1 | 709 | |
703df329 JH |
710 | usb_autopm_put_interface(acm->control); |
711 | ||
1365baf7 | 712 | mutex_unlock(&acm->mutex); |
1da177e4 | 713 | |
7fb57a01 HS |
714 | return 0; |
715 | ||
716 | error_submit_read_urbs: | |
e4c36076 JH |
717 | for (i = 0; i < acm->rx_buflimit; i++) |
718 | usb_kill_urb(acm->read_urbs[i]); | |
7fb57a01 HS |
719 | usb_kill_urb(acm->ctrlurb); |
720 | error_submit_urb: | |
703df329 | 721 | usb_autopm_put_interface(acm->control); |
7fb57a01 HS |
722 | error_get_interface: |
723 | disconnected: | |
724 | mutex_unlock(&acm->mutex); | |
8727bf68 JH |
725 | |
726 | return usb_translate_errors(retval); | |
1da177e4 LT |
727 | } |
728 | ||
7fb57a01 | 729 | static void acm_port_destruct(struct tty_port *port) |
83ef344a | 730 | { |
7fb57a01 HS |
731 | struct acm *acm = container_of(port, struct acm, port); |
732 | ||
91fac074 JH |
733 | if (acm->minor != ACM_MINOR_INVALID) |
734 | acm_release_minor(acm); | |
83ef344a | 735 | usb_put_intf(acm->control); |
c4cabd28 | 736 | kfree(acm->country_codes); |
83ef344a | 737 | kfree(acm); |
738 | } | |
739 | ||
7fb57a01 | 740 | static void acm_port_shutdown(struct tty_port *port) |
10077d4a | 741 | { |
7fb57a01 | 742 | struct acm *acm = container_of(port, struct acm, port); |
140cb81a JH |
743 | struct urb *urb; |
744 | struct acm_wb *wb; | |
dab54c9f | 745 | |
b1d42efc JH |
746 | /* |
747 | * Need to grab write_lock to prevent race with resume, but no need to | |
748 | * hold it due to the tty-port initialised flag. | |
749 | */ | |
6069e3e9 | 750 | acm_poison_urbs(acm); |
b1d42efc JH |
751 | spin_lock_irq(&acm->write_lock); |
752 | spin_unlock_irq(&acm->write_lock); | |
753 | ||
754 | usb_autopm_get_interface_no_resume(acm->control); | |
755 | acm->control->needs_remote_wakeup = 0; | |
756 | usb_autopm_put_interface(acm->control); | |
757 | ||
89e54e44 JH |
758 | for (;;) { |
759 | urb = usb_get_from_anchor(&acm->delayed); | |
760 | if (!urb) | |
761 | break; | |
762 | wb = urb->context; | |
37329036 | 763 | wb->use = false; |
89e54e44 | 764 | usb_autopm_put_interface_async(acm->control); |
10077d4a | 765 | } |
89e54e44 | 766 | |
6069e3e9 ON |
767 | acm_unpoison_urbs(acm); |
768 | ||
7fb57a01 HS |
769 | } |
770 | ||
771 | static void acm_tty_cleanup(struct tty_struct *tty) | |
772 | { | |
773 | struct acm *acm = tty->driver_data; | |
ab57f861 | 774 | |
7fb57a01 | 775 | tty_port_put(&acm->port); |
10077d4a AC |
776 | } |
777 | ||
778 | static void acm_tty_hangup(struct tty_struct *tty) | |
779 | { | |
780 | struct acm *acm = tty->driver_data; | |
ab57f861 | 781 | |
10077d4a | 782 | tty_port_hangup(&acm->port); |
10077d4a AC |
783 | } |
784 | ||
1da177e4 LT |
785 | static void acm_tty_close(struct tty_struct *tty, struct file *filp) |
786 | { | |
787 | struct acm *acm = tty->driver_data; | |
ab57f861 | 788 | |
7fb57a01 | 789 | tty_port_close(&acm->port, tty, filp); |
1da177e4 LT |
790 | } |
791 | ||
6e47e069 AC |
792 | static int acm_tty_write(struct tty_struct *tty, |
793 | const unsigned char *buf, int count) | |
1da177e4 LT |
794 | { |
795 | struct acm *acm = tty->driver_data; | |
796 | int stat; | |
884b600f ON |
797 | unsigned long flags; |
798 | int wbn; | |
799 | struct acm_wb *wb; | |
800 | ||
1da177e4 LT |
801 | if (!count) |
802 | return 0; | |
803 | ||
efbe27b3 | 804 | dev_vdbg(&acm->data->dev, "%d bytes from tty layer\n", count); |
a5cc7ef9 | 805 | |
884b600f | 806 | spin_lock_irqsave(&acm->write_lock, flags); |
6e47e069 AC |
807 | wbn = acm_wb_alloc(acm); |
808 | if (wbn < 0) { | |
884b600f | 809 | spin_unlock_irqrestore(&acm->write_lock, flags); |
884b600f ON |
810 | return 0; |
811 | } | |
812 | wb = &acm->wb[wbn]; | |
1da177e4 | 813 | |
71c2fb03 | 814 | if (!acm->dev) { |
37329036 | 815 | wb->use = false; |
71c2fb03 GKH |
816 | spin_unlock_irqrestore(&acm->write_lock, flags); |
817 | return -ENODEV; | |
818 | } | |
819 | ||
884b600f | 820 | count = (count > acm->writesize) ? acm->writesize : count; |
efbe27b3 | 821 | dev_vdbg(&acm->data->dev, "writing %d bytes\n", count); |
884b600f ON |
822 | memcpy(wb->buf, buf, count); |
823 | wb->len = count; | |
71c2fb03 | 824 | |
183a4508 JH |
825 | stat = usb_autopm_get_interface_async(acm->control); |
826 | if (stat) { | |
37329036 | 827 | wb->use = false; |
183a4508 JH |
828 | spin_unlock_irqrestore(&acm->write_lock, flags); |
829 | return stat; | |
830 | } | |
831 | ||
71c2fb03 | 832 | if (acm->susp_count) { |
140cb81a | 833 | usb_anchor_urb(wb->urb, &acm->delayed); |
71c2fb03 | 834 | spin_unlock_irqrestore(&acm->write_lock, flags); |
140cb81a | 835 | return count; |
71c2fb03 | 836 | } |
71c2fb03 GKH |
837 | |
838 | stat = acm_start_wb(acm, wb); | |
884b600f | 839 | spin_unlock_irqrestore(&acm->write_lock, flags); |
1da177e4 | 840 | |
6e47e069 | 841 | if (stat < 0) |
1da177e4 | 842 | return stat; |
1da177e4 LT |
843 | return count; |
844 | } | |
845 | ||
03b3b1a2 | 846 | static unsigned int acm_tty_write_room(struct tty_struct *tty) |
1da177e4 LT |
847 | { |
848 | struct acm *acm = tty->driver_data; | |
884b600f ON |
849 | /* |
850 | * Do not let the line discipline to know that we have a reserve, | |
851 | * or it might get too enthusiastic. | |
852 | */ | |
934da463 | 853 | return acm_wb_is_avail(acm) ? acm->writesize : 0; |
1da177e4 LT |
854 | } |
855 | ||
fff4ef17 | 856 | static unsigned int acm_tty_chars_in_buffer(struct tty_struct *tty) |
1da177e4 LT |
857 | { |
858 | struct acm *acm = tty->driver_data; | |
7fb57a01 HS |
859 | /* |
860 | * if the device was unplugged then any remaining characters fell out | |
861 | * of the connector ;) | |
862 | */ | |
863 | if (acm->disconnected) | |
23198fda | 864 | return 0; |
884b600f ON |
865 | /* |
866 | * This is inaccurate (overcounts), but it works. | |
867 | */ | |
86478944 | 868 | return (ACM_NW - acm_wb_is_avail(acm)) * acm->writesize; |
1da177e4 LT |
869 | } |
870 | ||
871 | static void acm_tty_throttle(struct tty_struct *tty) | |
872 | { | |
873 | struct acm *acm = tty->driver_data; | |
088c64f8 | 874 | |
0f02321e | 875 | set_bit(ACM_THROTTLED, &acm->flags); |
1da177e4 LT |
876 | } |
877 | ||
878 | static void acm_tty_unthrottle(struct tty_struct *tty) | |
879 | { | |
880 | struct acm *acm = tty->driver_data; | |
088c64f8 | 881 | |
0f02321e | 882 | clear_bit(ACM_THROTTLED, &acm->flags); |
088c64f8 | 883 | |
764478f4 JH |
884 | /* Matches the smp_mb__after_atomic() in acm_read_bulk_callback(). */ |
885 | smp_mb(); | |
886 | ||
0f02321e | 887 | acm_submit_read_urbs(acm, GFP_KERNEL); |
1da177e4 LT |
888 | } |
889 | ||
9e98966c | 890 | static int acm_tty_break_ctl(struct tty_struct *tty, int state) |
1da177e4 LT |
891 | { |
892 | struct acm *acm = tty->driver_data; | |
9e98966c | 893 | int retval; |
7fb57a01 | 894 | |
9e98966c AC |
895 | retval = acm_send_break(acm, state ? 0xffff : 0); |
896 | if (retval < 0) | |
90744af8 LM |
897 | dev_dbg(&acm->control->dev, |
898 | "%s - send break failed\n", __func__); | |
9e98966c | 899 | return retval; |
1da177e4 LT |
900 | } |
901 | ||
60b33c13 | 902 | static int acm_tty_tiocmget(struct tty_struct *tty) |
1da177e4 LT |
903 | { |
904 | struct acm *acm = tty->driver_data; | |
905 | ||
3fb975e6 JH |
906 | return (acm->ctrlout & USB_CDC_CTRL_DTR ? TIOCM_DTR : 0) | |
907 | (acm->ctrlout & USB_CDC_CTRL_RTS ? TIOCM_RTS : 0) | | |
7333c87f JH |
908 | (acm->ctrlin & USB_CDC_SERIAL_STATE_DSR ? TIOCM_DSR : 0) | |
909 | (acm->ctrlin & USB_CDC_SERIAL_STATE_RING_SIGNAL ? TIOCM_RI : 0) | | |
910 | (acm->ctrlin & USB_CDC_SERIAL_STATE_DCD ? TIOCM_CD : 0) | | |
1da177e4 LT |
911 | TIOCM_CTS; |
912 | } | |
913 | ||
20b9d177 | 914 | static int acm_tty_tiocmset(struct tty_struct *tty, |
1da177e4 LT |
915 | unsigned int set, unsigned int clear) |
916 | { | |
917 | struct acm *acm = tty->driver_data; | |
918 | unsigned int newctrl; | |
919 | ||
1da177e4 | 920 | newctrl = acm->ctrlout; |
3fb975e6 JH |
921 | set = (set & TIOCM_DTR ? USB_CDC_CTRL_DTR : 0) | |
922 | (set & TIOCM_RTS ? USB_CDC_CTRL_RTS : 0); | |
923 | clear = (clear & TIOCM_DTR ? USB_CDC_CTRL_DTR : 0) | | |
924 | (clear & TIOCM_RTS ? USB_CDC_CTRL_RTS : 0); | |
1da177e4 LT |
925 | |
926 | newctrl = (newctrl & ~clear) | set; | |
927 | ||
928 | if (acm->ctrlout == newctrl) | |
929 | return 0; | |
930 | return acm_set_control(acm, acm->ctrlout = newctrl); | |
931 | } | |
932 | ||
99f75a1f | 933 | static int get_serial_info(struct tty_struct *tty, struct serial_struct *ss) |
18c75720 | 934 | { |
99f75a1f | 935 | struct acm *acm = tty->driver_data; |
18c75720 | 936 | |
49696027 | 937 | ss->line = acm->minor; |
633e2b2d | 938 | ss->close_delay = jiffies_to_msecs(acm->port.close_delay) / 10; |
99f75a1f | 939 | ss->closing_wait = acm->port.closing_wait == ASYNC_CLOSING_WAIT_NONE ? |
ba2d8ce9 | 940 | ASYNC_CLOSING_WAIT_NONE : |
633e2b2d | 941 | jiffies_to_msecs(acm->port.closing_wait) / 10; |
99f75a1f | 942 | return 0; |
18c75720 ON |
943 | } |
944 | ||
99f75a1f | 945 | static int set_serial_info(struct tty_struct *tty, struct serial_struct *ss) |
ba2d8ce9 | 946 | { |
99f75a1f | 947 | struct acm *acm = tty->driver_data; |
ba2d8ce9 DW |
948 | unsigned int closing_wait, close_delay; |
949 | int retval = 0; | |
950 | ||
633e2b2d | 951 | close_delay = msecs_to_jiffies(ss->close_delay * 10); |
99f75a1f | 952 | closing_wait = ss->closing_wait == ASYNC_CLOSING_WAIT_NONE ? |
633e2b2d AM |
953 | ASYNC_CLOSING_WAIT_NONE : |
954 | msecs_to_jiffies(ss->closing_wait * 10); | |
ba2d8ce9 DW |
955 | |
956 | mutex_lock(&acm->port.mutex); | |
957 | ||
62d65bdd | 958 | if (!capable(CAP_SYS_ADMIN)) { |
729f7955 JH |
959 | if ((close_delay != acm->port.close_delay) || |
960 | (closing_wait != acm->port.closing_wait)) | |
ba2d8ce9 | 961 | retval = -EPERM; |
62d65bdd MR |
962 | } else { |
963 | acm->port.close_delay = close_delay; | |
964 | acm->port.closing_wait = closing_wait; | |
965 | } | |
ba2d8ce9 DW |
966 | |
967 | mutex_unlock(&acm->port.mutex); | |
968 | return retval; | |
969 | } | |
970 | ||
5a6a62bd ON |
971 | static int wait_serial_change(struct acm *acm, unsigned long arg) |
972 | { | |
973 | int rv = 0; | |
974 | DECLARE_WAITQUEUE(wait, current); | |
975 | struct async_icount old, new; | |
976 | ||
5a6a62bd ON |
977 | do { |
978 | spin_lock_irq(&acm->read_lock); | |
979 | old = acm->oldcount; | |
980 | new = acm->iocount; | |
981 | acm->oldcount = new; | |
982 | spin_unlock_irq(&acm->read_lock); | |
983 | ||
984 | if ((arg & TIOCM_DSR) && | |
985 | old.dsr != new.dsr) | |
986 | break; | |
987 | if ((arg & TIOCM_CD) && | |
988 | old.dcd != new.dcd) | |
989 | break; | |
990 | if ((arg & TIOCM_RI) && | |
991 | old.rng != new.rng) | |
992 | break; | |
993 | ||
994 | add_wait_queue(&acm->wioctl, &wait); | |
995 | set_current_state(TASK_INTERRUPTIBLE); | |
996 | schedule(); | |
997 | remove_wait_queue(&acm->wioctl, &wait); | |
998 | if (acm->disconnected) { | |
999 | if (arg & TIOCM_CD) | |
1000 | break; | |
1001 | else | |
1002 | rv = -ENODEV; | |
1003 | } else { | |
1004 | if (signal_pending(current)) | |
1005 | rv = -ERESTARTSYS; | |
1006 | } | |
1007 | } while (!rv); | |
1008 | ||
1009 | ||
1010 | ||
1011 | return rv; | |
1012 | } | |
1013 | ||
bb2d387c JH |
1014 | static int acm_tty_get_icount(struct tty_struct *tty, |
1015 | struct serial_icounter_struct *icount) | |
797ef137 | 1016 | { |
bb2d387c | 1017 | struct acm *acm = tty->driver_data; |
797ef137 | 1018 | |
bb2d387c JH |
1019 | icount->dsr = acm->iocount.dsr; |
1020 | icount->rng = acm->iocount.rng; | |
1021 | icount->dcd = acm->iocount.dcd; | |
1022 | icount->frame = acm->iocount.frame; | |
1023 | icount->overrun = acm->iocount.overrun; | |
1024 | icount->parity = acm->iocount.parity; | |
1025 | icount->brk = acm->iocount.brk; | |
797ef137 | 1026 | |
bb2d387c | 1027 | return 0; |
797ef137 ON |
1028 | } |
1029 | ||
6caa76b7 | 1030 | static int acm_tty_ioctl(struct tty_struct *tty, |
6e47e069 | 1031 | unsigned int cmd, unsigned long arg) |
1da177e4 | 1032 | { |
18c75720 ON |
1033 | struct acm *acm = tty->driver_data; |
1034 | int rv = -ENOIOCTLCMD; | |
1035 | ||
1036 | switch (cmd) { | |
5a6a62bd | 1037 | case TIOCMIWAIT: |
8fdbeb26 ON |
1038 | rv = usb_autopm_get_interface(acm->control); |
1039 | if (rv < 0) { | |
1040 | rv = -EIO; | |
1041 | break; | |
1042 | } | |
5a6a62bd | 1043 | rv = wait_serial_change(acm, arg); |
8fdbeb26 | 1044 | usb_autopm_put_interface(acm->control); |
5a6a62bd | 1045 | break; |
18c75720 ON |
1046 | } |
1047 | ||
1048 | return rv; | |
1da177e4 LT |
1049 | } |
1050 | ||
6e47e069 | 1051 | static void acm_tty_set_termios(struct tty_struct *tty, |
a8c11c15 | 1052 | const struct ktermios *termios_old) |
1da177e4 LT |
1053 | { |
1054 | struct acm *acm = tty->driver_data; | |
adc8d746 | 1055 | struct ktermios *termios = &tty->termios; |
1da177e4 LT |
1056 | struct usb_cdc_line_coding newline; |
1057 | int newctrl = acm->ctrlout; | |
1058 | ||
9b80fee1 | 1059 | newline.dwDTERate = cpu_to_le32(tty_get_baud_rate(tty)); |
1da177e4 LT |
1060 | newline.bCharFormat = termios->c_cflag & CSTOPB ? 2 : 0; |
1061 | newline.bParityType = termios->c_cflag & PARENB ? | |
6e47e069 AC |
1062 | (termios->c_cflag & PARODD ? 1 : 2) + |
1063 | (termios->c_cflag & CMSPAR ? 2 : 0) : 0; | |
3ec2ff37 JS |
1064 | newline.bDataBits = tty_get_char_size(termios->c_cflag); |
1065 | ||
6e47e069 | 1066 | /* FIXME: Needs to clear unsupported bits in the termios */ |
1da177e4 LT |
1067 | acm->clocal = ((termios->c_cflag & CLOCAL) != 0); |
1068 | ||
4473d054 | 1069 | if (C_BAUD(tty) == B0) { |
1da177e4 | 1070 | newline.dwDTERate = acm->line.dwDTERate; |
3fb975e6 | 1071 | newctrl &= ~USB_CDC_CTRL_DTR; |
4473d054 | 1072 | } else if (termios_old && (termios_old->c_cflag & CBAUD) == B0) { |
3fb975e6 | 1073 | newctrl |= USB_CDC_CTRL_DTR; |
4473d054 | 1074 | } |
1da177e4 LT |
1075 | |
1076 | if (newctrl != acm->ctrlout) | |
1077 | acm_set_control(acm, acm->ctrlout = newctrl); | |
1078 | ||
1079 | if (memcmp(&acm->line, &newline, sizeof newline)) { | |
1080 | memcpy(&acm->line, &newline, sizeof newline); | |
a5cc7ef9 JH |
1081 | dev_dbg(&acm->control->dev, "%s - set line: %d %d %d %d\n", |
1082 | __func__, | |
1083 | le32_to_cpu(newline.dwDTERate), | |
1da177e4 LT |
1084 | newline.bCharFormat, newline.bParityType, |
1085 | newline.bDataBits); | |
1086 | acm_set_line(acm, &acm->line); | |
1087 | } | |
1088 | } | |
1089 | ||
7fb57a01 | 1090 | static const struct tty_port_operations acm_port_ops = { |
0943d8ea | 1091 | .dtr_rts = acm_port_dtr_rts, |
7fb57a01 HS |
1092 | .shutdown = acm_port_shutdown, |
1093 | .activate = acm_port_activate, | |
1094 | .destruct = acm_port_destruct, | |
1095 | }; | |
1096 | ||
1da177e4 LT |
1097 | /* |
1098 | * USB probe and disconnect routines. | |
1099 | */ | |
1100 | ||
830f4021 | 1101 | /* Little helpers: write/read buffers free */ |
884b600f ON |
1102 | static void acm_write_buffers_free(struct acm *acm) |
1103 | { | |
1104 | int i; | |
1105 | struct acm_wb *wb; | |
1106 | ||
6e47e069 | 1107 | for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++) |
e4614606 | 1108 | usb_free_coherent(acm->dev, acm->writesize, wb->buf, wb->dmah); |
884b600f ON |
1109 | } |
1110 | ||
830f4021 ON |
1111 | static void acm_read_buffers_free(struct acm *acm) |
1112 | { | |
dab54c9f | 1113 | int i; |
830f4021 | 1114 | |
dab54c9f | 1115 | for (i = 0; i < acm->rx_buflimit; i++) |
e4614606 | 1116 | usb_free_coherent(acm->dev, acm->readsize, |
088c64f8 | 1117 | acm->read_buffers[i].base, acm->read_buffers[i].dma); |
830f4021 ON |
1118 | } |
1119 | ||
884b600f ON |
1120 | /* Little helper: write buffers allocate */ |
1121 | static int acm_write_buffers_alloc(struct acm *acm) | |
1122 | { | |
1123 | int i; | |
1124 | struct acm_wb *wb; | |
1125 | ||
86478944 | 1126 | for (wb = &acm->wb[0], i = 0; i < ACM_NW; i++, wb++) { |
997ea58e | 1127 | wb->buf = usb_alloc_coherent(acm->dev, acm->writesize, GFP_KERNEL, |
884b600f ON |
1128 | &wb->dmah); |
1129 | if (!wb->buf) { | |
1130 | while (i != 0) { | |
1131 | --i; | |
1132 | --wb; | |
997ea58e | 1133 | usb_free_coherent(acm->dev, acm->writesize, |
884b600f ON |
1134 | wb->buf, wb->dmah); |
1135 | } | |
1136 | return -ENOMEM; | |
1137 | } | |
1138 | } | |
1139 | return 0; | |
1140 | } | |
1141 | ||
10077d4a AC |
1142 | static int acm_probe(struct usb_interface *intf, |
1143 | const struct usb_device_id *id) | |
1da177e4 LT |
1144 | { |
1145 | struct usb_cdc_union_desc *union_header = NULL; | |
cb42b63d | 1146 | struct usb_cdc_call_mgmt_descriptor *cmgmd = NULL; |
c6dbf554 | 1147 | unsigned char *buffer = intf->altsetting->extra; |
1da177e4 LT |
1148 | int buflen = intf->altsetting->extralen; |
1149 | struct usb_interface *control_interface; | |
1150 | struct usb_interface *data_interface; | |
a2bfb4a3 ON |
1151 | struct usb_endpoint_descriptor *epctrl = NULL; |
1152 | struct usb_endpoint_descriptor *epread = NULL; | |
1153 | struct usb_endpoint_descriptor *epwrite = NULL; | |
1da177e4 | 1154 | struct usb_device *usb_dev = interface_to_usbdev(intf); |
cb42b63d | 1155 | struct usb_cdc_parsed_header h; |
1da177e4 LT |
1156 | struct acm *acm; |
1157 | int minor; | |
6e47e069 | 1158 | int ctrlsize, readsize; |
1da177e4 | 1159 | u8 *buf; |
cb42b63d ON |
1160 | int call_intf_num = -1; |
1161 | int data_intf_num = -1; | |
1da177e4 | 1162 | unsigned long quirks; |
86478944 | 1163 | int num_rx_buf; |
61a87adf | 1164 | int i; |
a2bfb4a3 | 1165 | int combined_interfaces = 0; |
c93d8195 AK |
1166 | struct device *tty_dev; |
1167 | int rv = -ENOMEM; | |
f8d8464b | 1168 | int res; |
1da177e4 | 1169 | |
86478944 | 1170 | /* normal quirks */ |
1da177e4 | 1171 | quirks = (unsigned long)id->driver_info; |
16142655 DT |
1172 | |
1173 | if (quirks == IGNORE_DEVICE) | |
1174 | return -ENODEV; | |
1175 | ||
7309aa84 ON |
1176 | memset(&h, 0x00, sizeof(struct usb_cdc_parsed_header)); |
1177 | ||
86478944 ON |
1178 | num_rx_buf = (quirks == SINGLE_RX_URB) ? 1 : ACM_NR; |
1179 | ||
1180 | /* handle quirks deadly to normal probing*/ | |
1da177e4 LT |
1181 | if (quirks == NO_UNION_NORMAL) { |
1182 | data_interface = usb_ifnum_to_if(usb_dev, 1); | |
1183 | control_interface = usb_ifnum_to_if(usb_dev, 0); | |
8835ba4a ON |
1184 | /* we would crash */ |
1185 | if (!data_interface || !control_interface) | |
1186 | return -ENODEV; | |
1da177e4 LT |
1187 | goto skip_normal_probe; |
1188 | } | |
6e47e069 | 1189 | |
1da177e4 LT |
1190 | /* normal probing*/ |
1191 | if (!buffer) { | |
9908a32e | 1192 | dev_err(&intf->dev, "Weird descriptor references\n"); |
1da177e4 LT |
1193 | return -EINVAL; |
1194 | } | |
1195 | ||
1196 | if (!buflen) { | |
577045c0 TG |
1197 | if (intf->cur_altsetting->endpoint && |
1198 | intf->cur_altsetting->endpoint->extralen && | |
6e47e069 AC |
1199 | intf->cur_altsetting->endpoint->extra) { |
1200 | dev_dbg(&intf->dev, | |
1201 | "Seeking extra descriptors on endpoint\n"); | |
1da177e4 LT |
1202 | buflen = intf->cur_altsetting->endpoint->extralen; |
1203 | buffer = intf->cur_altsetting->endpoint->extra; | |
1204 | } else { | |
9908a32e GKH |
1205 | dev_err(&intf->dev, |
1206 | "Zero length descriptor references\n"); | |
1da177e4 LT |
1207 | return -EINVAL; |
1208 | } | |
1209 | } | |
1210 | ||
cb42b63d ON |
1211 | cdc_parse_cdc_header(&h, intf, buffer, buflen); |
1212 | union_header = h.usb_cdc_union_desc; | |
1213 | cmgmd = h.usb_cdc_call_mgmt_descriptor; | |
1214 | if (cmgmd) | |
1215 | call_intf_num = cmgmd->bDataInterface; | |
1da177e4 LT |
1216 | |
1217 | if (!union_header) { | |
bf1c6744 JH |
1218 | if (intf->cur_altsetting->desc.bNumEndpoints == 3) { |
1219 | dev_dbg(&intf->dev, "No union descriptor, assuming single interface\n"); | |
1220 | combined_interfaces = 1; | |
1221 | control_interface = data_interface = intf; | |
1222 | goto look_for_collapsed_interface; | |
1223 | } else if (call_intf_num > 0) { | |
6e47e069 | 1224 | dev_dbg(&intf->dev, "No union descriptor, using call management descriptor\n"); |
bf1c6744 JH |
1225 | data_intf_num = call_intf_num; |
1226 | data_interface = usb_ifnum_to_if(usb_dev, data_intf_num); | |
1da177e4 LT |
1227 | control_interface = intf; |
1228 | } else { | |
bf1c6744 JH |
1229 | dev_dbg(&intf->dev, "No union descriptor, giving up\n"); |
1230 | return -ENODEV; | |
1da177e4 LT |
1231 | } |
1232 | } else { | |
960c7339 JH |
1233 | int class = -1; |
1234 | ||
cb42b63d | 1235 | data_intf_num = union_header->bSlaveInterface0; |
1da177e4 | 1236 | control_interface = usb_ifnum_to_if(usb_dev, union_header->bMasterInterface0); |
cb42b63d | 1237 | data_interface = usb_ifnum_to_if(usb_dev, data_intf_num); |
960c7339 JH |
1238 | |
1239 | if (control_interface) | |
1240 | class = control_interface->cur_altsetting->desc.bInterfaceClass; | |
1241 | ||
1242 | if (class != USB_CLASS_COMM && class != USB_CLASS_CDC_DATA) { | |
1243 | dev_dbg(&intf->dev, "Broken union descriptor, assuming single interface\n"); | |
1244 | combined_interfaces = 1; | |
1245 | control_interface = data_interface = intf; | |
1246 | goto look_for_collapsed_interface; | |
1247 | } | |
403dff4e GKH |
1248 | } |
1249 | ||
1250 | if (!control_interface || !data_interface) { | |
1251 | dev_dbg(&intf->dev, "no interfaces\n"); | |
1252 | return -ENODEV; | |
1da177e4 | 1253 | } |
6e47e069 | 1254 | |
cb42b63d | 1255 | if (data_intf_num != call_intf_num) |
6e47e069 | 1256 | dev_dbg(&intf->dev, "Separate call control interface. That is not fully supported.\n"); |
1da177e4 | 1257 | |
a2bfb4a3 ON |
1258 | if (control_interface == data_interface) { |
1259 | /* some broken devices designed for windows work this way */ | |
1260 | dev_warn(&intf->dev,"Control and data interfaces are not separated!\n"); | |
1261 | combined_interfaces = 1; | |
1262 | /* a popular other OS doesn't use it */ | |
1263 | quirks |= NO_CAP_LINE; | |
1264 | if (data_interface->cur_altsetting->desc.bNumEndpoints != 3) { | |
1265 | dev_err(&intf->dev, "This needs exactly 3 endpoints\n"); | |
1266 | return -EINVAL; | |
1267 | } | |
1268 | look_for_collapsed_interface: | |
f8d8464b JH |
1269 | res = usb_find_common_endpoints(data_interface->cur_altsetting, |
1270 | &epread, &epwrite, &epctrl, NULL); | |
1271 | if (res) | |
1272 | return res; | |
1273 | ||
1274 | goto made_compressed_probe; | |
a2bfb4a3 ON |
1275 | } |
1276 | ||
1da177e4 LT |
1277 | skip_normal_probe: |
1278 | ||
1279 | /*workaround for switched interfaces */ | |
319bb4a7 JH |
1280 | if (data_interface->cur_altsetting->desc.bInterfaceClass != USB_CLASS_CDC_DATA) { |
1281 | if (control_interface->cur_altsetting->desc.bInterfaceClass == USB_CLASS_CDC_DATA) { | |
6e47e069 AC |
1282 | dev_dbg(&intf->dev, |
1283 | "Your device has switched interfaces.\n"); | |
2cfef79d | 1284 | swap(control_interface, data_interface); |
1da177e4 LT |
1285 | } else { |
1286 | return -EINVAL; | |
1287 | } | |
1288 | } | |
74da5d68 AS |
1289 | |
1290 | /* Accept probe requests only for the control interface */ | |
a2bfb4a3 | 1291 | if (!combined_interfaces && intf != control_interface) |
74da5d68 | 1292 | return -ENODEV; |
6e47e069 | 1293 | |
99f347ca SS |
1294 | if (data_interface->cur_altsetting->desc.bNumEndpoints < 2 || |
1295 | control_interface->cur_altsetting->desc.bNumEndpoints == 0) | |
1da177e4 LT |
1296 | return -EINVAL; |
1297 | ||
1298 | epctrl = &control_interface->cur_altsetting->endpoint[0].desc; | |
1299 | epread = &data_interface->cur_altsetting->endpoint[0].desc; | |
1300 | epwrite = &data_interface->cur_altsetting->endpoint[1].desc; | |
1301 | ||
1302 | ||
1303 | /* workaround for switched endpoints */ | |
45aea704 | 1304 | if (!usb_endpoint_dir_in(epread)) { |
1da177e4 | 1305 | /* descriptors are swapped */ |
6e47e069 AC |
1306 | dev_dbg(&intf->dev, |
1307 | "The data interface has switched endpoints\n"); | |
2cfef79d | 1308 | swap(epread, epwrite); |
1da177e4 | 1309 | } |
a2bfb4a3 | 1310 | made_compressed_probe: |
a5cc7ef9 | 1311 | dev_dbg(&intf->dev, "interfaces are valid\n"); |
1da177e4 | 1312 | |
6e47e069 | 1313 | acm = kzalloc(sizeof(struct acm), GFP_KERNEL); |
f8255ee1 | 1314 | if (!acm) |
4cde059a | 1315 | return -ENOMEM; |
1da177e4 | 1316 | |
cae2bc76 JK |
1317 | tty_port_init(&acm->port); |
1318 | acm->port.ops = &acm_port_ops; | |
1319 | ||
29cc8897 KM |
1320 | ctrlsize = usb_endpoint_maxp(epctrl); |
1321 | readsize = usb_endpoint_maxp(epread) * | |
6e47e069 | 1322 | (quirks == SINGLE_RX_URB ? 1 : 2); |
a2bfb4a3 | 1323 | acm->combined_interfaces = combined_interfaces; |
29cc8897 | 1324 | acm->writesize = usb_endpoint_maxp(epwrite) * 20; |
1da177e4 LT |
1325 | acm->control = control_interface; |
1326 | acm->data = data_interface; | |
c52873e5 ON |
1327 | |
1328 | usb_get_intf(acm->control); /* undone in destruct() */ | |
1329 | ||
1330 | minor = acm_alloc_minor(acm); | |
91fac074 JH |
1331 | if (minor < 0) { |
1332 | acm->minor = ACM_MINOR_INVALID; | |
4cde059a | 1333 | goto err_put_port; |
91fac074 | 1334 | } |
c52873e5 | 1335 | |
1da177e4 LT |
1336 | acm->minor = minor; |
1337 | acm->dev = usb_dev; | |
cb42b63d ON |
1338 | if (h.usb_cdc_acm_descriptor) |
1339 | acm->ctrl_caps = h.usb_cdc_acm_descriptor->bmCapabilities; | |
a2bfb4a3 ON |
1340 | if (quirks & NO_CAP_LINE) |
1341 | acm->ctrl_caps &= ~USB_CDC_CAP_LINE; | |
1da177e4 LT |
1342 | acm->ctrlsize = ctrlsize; |
1343 | acm->readsize = readsize; | |
86478944 | 1344 | acm->rx_buflimit = num_rx_buf; |
a4e7279c | 1345 | INIT_DELAYED_WORK(&acm->dwork, acm_softint); |
5a6a62bd | 1346 | init_waitqueue_head(&acm->wioctl); |
884b600f | 1347 | spin_lock_init(&acm->write_lock); |
61a87adf | 1348 | spin_lock_init(&acm->read_lock); |
1365baf7 | 1349 | mutex_init(&acm->mutex); |
d305394e | 1350 | if (usb_endpoint_xfer_int(epread)) { |
cf7fdd57 | 1351 | acm->bInterval = epread->bInterval; |
74bccc9b LM |
1352 | acm->in = usb_rcvintpipe(usb_dev, epread->bEndpointAddress); |
1353 | } else { | |
1354 | acm->in = usb_rcvbulkpipe(usb_dev, epread->bEndpointAddress); | |
1355 | } | |
1356 | if (usb_endpoint_xfer_int(epwrite)) | |
1357 | acm->out = usb_sndintpipe(usb_dev, epwrite->bEndpointAddress); | |
1358 | else | |
1359 | acm->out = usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress); | |
140cb81a | 1360 | init_usb_anchor(&acm->delayed); |
2a8cdfde | 1361 | acm->quirks = quirks; |
1da177e4 | 1362 | |
997ea58e | 1363 | buf = usb_alloc_coherent(usb_dev, ctrlsize, GFP_KERNEL, &acm->ctrl_dma); |
17136d49 | 1364 | if (!buf) |
4cde059a | 1365 | goto err_put_port; |
1da177e4 LT |
1366 | acm->ctrl_buffer = buf; |
1367 | ||
17136d49 | 1368 | if (acm_write_buffers_alloc(acm) < 0) |
4cde059a | 1369 | goto err_free_ctrl_buffer; |
1da177e4 LT |
1370 | |
1371 | acm->ctrlurb = usb_alloc_urb(0, GFP_KERNEL); | |
17136d49 | 1372 | if (!acm->ctrlurb) |
4cde059a | 1373 | goto err_free_write_buffers; |
17136d49 | 1374 | |
86478944 | 1375 | for (i = 0; i < num_rx_buf; i++) { |
088c64f8 JH |
1376 | struct acm_rb *rb = &(acm->read_buffers[i]); |
1377 | struct urb *urb; | |
61a87adf | 1378 | |
74f5e1ba JH |
1379 | rb->base = usb_alloc_coherent(acm->dev, readsize, GFP_KERNEL, |
1380 | &rb->dma); | |
17136d49 | 1381 | if (!rb->base) |
4cde059a | 1382 | goto err_free_read_urbs; |
088c64f8 JH |
1383 | rb->index = i; |
1384 | rb->instance = acm; | |
74f5e1ba | 1385 | |
088c64f8 | 1386 | urb = usb_alloc_urb(0, GFP_KERNEL); |
17136d49 | 1387 | if (!urb) |
4cde059a | 1388 | goto err_free_read_urbs; |
17136d49 | 1389 | |
088c64f8 JH |
1390 | urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
1391 | urb->transfer_dma = rb->dma; | |
d305394e | 1392 | if (usb_endpoint_xfer_int(epread)) |
74bccc9b | 1393 | usb_fill_int_urb(urb, acm->dev, acm->in, rb->base, |
088c64f8 JH |
1394 | acm->readsize, |
1395 | acm_read_bulk_callback, rb, | |
1396 | acm->bInterval); | |
74bccc9b LM |
1397 | else |
1398 | usb_fill_bulk_urb(urb, acm->dev, acm->in, rb->base, | |
088c64f8 JH |
1399 | acm->readsize, |
1400 | acm_read_bulk_callback, rb); | |
61a87adf | 1401 | |
088c64f8 JH |
1402 | acm->read_urbs[i] = urb; |
1403 | __set_bit(i, &acm->read_urbs_free); | |
61a87adf | 1404 | } |
6e47e069 | 1405 | for (i = 0; i < ACM_NW; i++) { |
e4cf3aa8 DE |
1406 | struct acm_wb *snd = &(acm->wb[i]); |
1407 | ||
6e47e069 | 1408 | snd->urb = usb_alloc_urb(0, GFP_KERNEL); |
f8255ee1 | 1409 | if (!snd->urb) |
4cde059a | 1410 | goto err_free_write_urbs; |
e4cf3aa8 | 1411 | |
5186ffee | 1412 | if (usb_endpoint_xfer_int(epwrite)) |
74bccc9b | 1413 | usb_fill_int_urb(snd->urb, usb_dev, acm->out, |
5186ffee AL |
1414 | NULL, acm->writesize, acm_write_bulk, snd, epwrite->bInterval); |
1415 | else | |
74bccc9b | 1416 | usb_fill_bulk_urb(snd->urb, usb_dev, acm->out, |
5186ffee | 1417 | NULL, acm->writesize, acm_write_bulk, snd); |
e4cf3aa8 | 1418 | snd->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
ffdb1e36 LB |
1419 | if (quirks & SEND_ZERO_PACKET) |
1420 | snd->urb->transfer_flags |= URB_ZERO_PACKET; | |
e4cf3aa8 | 1421 | snd->instance = acm; |
1da177e4 LT |
1422 | } |
1423 | ||
6e47e069 | 1424 | usb_set_intfdata(intf, acm); |
c4cabd28 ON |
1425 | |
1426 | i = device_create_file(&intf->dev, &dev_attr_bmCapabilities); | |
1427 | if (i < 0) | |
4cde059a | 1428 | goto err_free_write_urbs; |
c4cabd28 | 1429 | |
cb42b63d ON |
1430 | if (h.usb_cdc_country_functional_desc) { /* export the country data */ |
1431 | struct usb_cdc_country_functional_desc * cfd = | |
1432 | h.usb_cdc_country_functional_desc; | |
1433 | ||
c4cabd28 ON |
1434 | acm->country_codes = kmalloc(cfd->bLength - 4, GFP_KERNEL); |
1435 | if (!acm->country_codes) | |
1436 | goto skip_countries; | |
1437 | acm->country_code_size = cfd->bLength - 4; | |
6e47e069 AC |
1438 | memcpy(acm->country_codes, (u8 *)&cfd->wCountyCode0, |
1439 | cfd->bLength - 4); | |
c4cabd28 ON |
1440 | acm->country_rel_date = cfd->iCountryCodeRelDate; |
1441 | ||
1442 | i = device_create_file(&intf->dev, &dev_attr_wCountryCodes); | |
1443 | if (i < 0) { | |
1444 | kfree(acm->country_codes); | |
e7c8e860 JL |
1445 | acm->country_codes = NULL; |
1446 | acm->country_code_size = 0; | |
c4cabd28 ON |
1447 | goto skip_countries; |
1448 | } | |
1449 | ||
6e47e069 AC |
1450 | i = device_create_file(&intf->dev, |
1451 | &dev_attr_iCountryCodeRelDate); | |
c4cabd28 | 1452 | if (i < 0) { |
c2572b78 | 1453 | device_remove_file(&intf->dev, &dev_attr_wCountryCodes); |
c4cabd28 | 1454 | kfree(acm->country_codes); |
e7c8e860 JL |
1455 | acm->country_codes = NULL; |
1456 | acm->country_code_size = 0; | |
c4cabd28 ON |
1457 | goto skip_countries; |
1458 | } | |
1459 | } | |
1460 | ||
1461 | skip_countries: | |
6e47e069 | 1462 | usb_fill_int_urb(acm->ctrlurb, usb_dev, |
a2bfb4a3 ON |
1463 | usb_rcvintpipe(usb_dev, epctrl->bEndpointAddress), |
1464 | acm->ctrl_buffer, ctrlsize, acm_ctrl_irq, acm, | |
1465 | /* works around buggy devices */ | |
d102e78f | 1466 | epctrl->bInterval ? epctrl->bInterval : 16); |
1da177e4 LT |
1467 | acm->ctrlurb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
1468 | acm->ctrlurb->transfer_dma = acm->ctrl_dma; | |
ea258352 TH |
1469 | acm->notification_buffer = NULL; |
1470 | acm->nb_index = 0; | |
1471 | acm->nb_size = 0; | |
1da177e4 | 1472 | |
1da177e4 LT |
1473 | acm->line.dwDTERate = cpu_to_le32(9600); |
1474 | acm->line.bDataBits = 8; | |
1475 | acm_set_line(acm, &acm->line); | |
1476 | ||
0b2b23ca JH |
1477 | if (!acm->combined_interfaces) { |
1478 | rv = usb_driver_claim_interface(&acm_driver, data_interface, acm); | |
1479 | if (rv) | |
1480 | goto err_remove_files; | |
1481 | } | |
1da177e4 | 1482 | |
c93d8195 | 1483 | tty_dev = tty_port_register_device(&acm->port, acm_tty_driver, minor, |
734cc178 | 1484 | &control_interface->dev); |
c93d8195 AK |
1485 | if (IS_ERR(tty_dev)) { |
1486 | rv = PTR_ERR(tty_dev); | |
4cde059a | 1487 | goto err_release_data_interface; |
c93d8195 | 1488 | } |
1da177e4 | 1489 | |
15bf722e | 1490 | if (quirks & CLEAR_HALT_CONDITIONS) { |
74bccc9b LM |
1491 | usb_clear_halt(usb_dev, acm->in); |
1492 | usb_clear_halt(usb_dev, acm->out); | |
15bf722e AS |
1493 | } |
1494 | ||
79579411 JH |
1495 | dev_info(&intf->dev, "ttyACM%d: USB ACM device\n", minor); |
1496 | ||
c4cabd28 | 1497 | return 0; |
4cde059a JH |
1498 | |
1499 | err_release_data_interface: | |
4e49bf37 JH |
1500 | if (!acm->combined_interfaces) { |
1501 | /* Clear driver data so that disconnect() returns early. */ | |
1502 | usb_set_intfdata(data_interface, NULL); | |
1503 | usb_driver_release_interface(&acm_driver, data_interface); | |
1504 | } | |
0b2b23ca | 1505 | err_remove_files: |
c93d8195 AK |
1506 | if (acm->country_codes) { |
1507 | device_remove_file(&acm->control->dev, | |
1508 | &dev_attr_wCountryCodes); | |
1509 | device_remove_file(&acm->control->dev, | |
1510 | &dev_attr_iCountryCodeRelDate); | |
1511 | } | |
1512 | device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities); | |
4cde059a | 1513 | err_free_write_urbs: |
e4cf3aa8 DE |
1514 | for (i = 0; i < ACM_NW; i++) |
1515 | usb_free_urb(acm->wb[i].urb); | |
4cde059a | 1516 | err_free_read_urbs: |
86478944 | 1517 | for (i = 0; i < num_rx_buf; i++) |
088c64f8 | 1518 | usb_free_urb(acm->read_urbs[i]); |
74f5e1ba | 1519 | acm_read_buffers_free(acm); |
1da177e4 | 1520 | usb_free_urb(acm->ctrlurb); |
4cde059a | 1521 | err_free_write_buffers: |
884b600f | 1522 | acm_write_buffers_free(acm); |
4cde059a | 1523 | err_free_ctrl_buffer: |
cae2bc76 | 1524 | usb_free_coherent(usb_dev, ctrlsize, acm->ctrl_buffer, acm->ctrl_dma); |
4cde059a | 1525 | err_put_port: |
cae2bc76 | 1526 | tty_port_put(&acm->port); |
4cde059a | 1527 | |
c93d8195 | 1528 | return rv; |
1da177e4 LT |
1529 | } |
1530 | ||
1531 | static void acm_disconnect(struct usb_interface *intf) | |
1532 | { | |
c4cabd28 | 1533 | struct acm *acm = usb_get_intfdata(intf); |
10077d4a | 1534 | struct tty_struct *tty; |
f2924d4b | 1535 | int i; |
7fb57a01 | 1536 | |
672c4e18 DB |
1537 | /* sibling interface is already cleaning up */ |
1538 | if (!acm) | |
86067eea | 1539 | return; |
672c4e18 | 1540 | |
7fb57a01 | 1541 | acm->disconnected = true; |
6069e3e9 ON |
1542 | /* |
1543 | * there is a circular dependency. acm_softint() can resubmit | |
1544 | * the URBs in error handling so we need to block any | |
1545 | * submission right away | |
1546 | */ | |
1547 | acm_poison_urbs(acm); | |
1548 | mutex_lock(&acm->mutex); | |
6e47e069 | 1549 | if (acm->country_codes) { |
74da5d68 AS |
1550 | device_remove_file(&acm->control->dev, |
1551 | &dev_attr_wCountryCodes); | |
1552 | device_remove_file(&acm->control->dev, | |
1553 | &dev_attr_iCountryCodeRelDate); | |
c4cabd28 | 1554 | } |
5a6a62bd | 1555 | wake_up_all(&acm->wioctl); |
74da5d68 | 1556 | device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities); |
86067eea ON |
1557 | usb_set_intfdata(acm->control, NULL); |
1558 | usb_set_intfdata(acm->data, NULL); | |
7fb57a01 HS |
1559 | mutex_unlock(&acm->mutex); |
1560 | ||
1561 | tty = tty_port_tty_get(&acm->port); | |
1562 | if (tty) { | |
1563 | tty_vhangup(tty); | |
1564 | tty_kref_put(tty); | |
1565 | } | |
1da177e4 | 1566 | |
a4e7279c | 1567 | cancel_delayed_work_sync(&acm->dwork); |
1da177e4 | 1568 | |
cb25505f JH |
1569 | tty_unregister_device(acm_tty_driver, acm->minor); |
1570 | ||
f2924d4b RI |
1571 | usb_free_urb(acm->ctrlurb); |
1572 | for (i = 0; i < ACM_NW; i++) | |
1573 | usb_free_urb(acm->wb[i].urb); | |
1574 | for (i = 0; i < acm->rx_buflimit; i++) | |
1575 | usb_free_urb(acm->read_urbs[i]); | |
884b600f | 1576 | acm_write_buffers_free(acm); |
e4614606 | 1577 | usb_free_coherent(acm->dev, acm->ctrlsize, acm->ctrl_buffer, acm->ctrl_dma); |
830f4021 | 1578 | acm_read_buffers_free(acm); |
1da177e4 | 1579 | |
ea258352 TH |
1580 | kfree(acm->notification_buffer); |
1581 | ||
a2bfb4a3 ON |
1582 | if (!acm->combined_interfaces) |
1583 | usb_driver_release_interface(&acm_driver, intf == acm->control ? | |
830f4021 | 1584 | acm->data : acm->control); |
1da177e4 | 1585 | |
7fb57a01 | 1586 | tty_port_put(&acm->port); |
1da177e4 LT |
1587 | } |
1588 | ||
35758589 | 1589 | #ifdef CONFIG_PM |
1365baf7 ON |
1590 | static int acm_suspend(struct usb_interface *intf, pm_message_t message) |
1591 | { | |
1592 | struct acm *acm = usb_get_intfdata(intf); | |
11ea859d ON |
1593 | int cnt; |
1594 | ||
bbf0cb3e | 1595 | spin_lock_irq(&acm->write_lock); |
5b1b0b81 | 1596 | if (PMSG_IS_AUTO(message)) { |
5a345c20 | 1597 | if (acm->transmitting) { |
bbf0cb3e | 1598 | spin_unlock_irq(&acm->write_lock); |
11ea859d | 1599 | return -EBUSY; |
5a345c20 | 1600 | } |
11ea859d | 1601 | } |
11ea859d | 1602 | cnt = acm->susp_count++; |
bbf0cb3e | 1603 | spin_unlock_irq(&acm->write_lock); |
1365baf7 | 1604 | |
11ea859d | 1605 | if (cnt) |
1365baf7 | 1606 | return 0; |
1365baf7 | 1607 | |
6069e3e9 | 1608 | acm_poison_urbs(acm); |
a4e7279c ON |
1609 | cancel_delayed_work_sync(&acm->dwork); |
1610 | acm->urbs_in_error_delay = 0; | |
1365baf7 | 1611 | |
1365baf7 ON |
1612 | return 0; |
1613 | } | |
1614 | ||
1615 | static int acm_resume(struct usb_interface *intf) | |
1616 | { | |
1617 | struct acm *acm = usb_get_intfdata(intf); | |
140cb81a | 1618 | struct urb *urb; |
1365baf7 ON |
1619 | int rv = 0; |
1620 | ||
bbf0cb3e | 1621 | spin_lock_irq(&acm->write_lock); |
11ea859d | 1622 | |
e144ed28 JH |
1623 | if (--acm->susp_count) |
1624 | goto out; | |
1365baf7 | 1625 | |
a8b3b519 ON |
1626 | acm_unpoison_urbs(acm); |
1627 | ||
d41861ca | 1628 | if (tty_port_initialized(&acm->port)) { |
e144ed28 | 1629 | rv = usb_submit_urb(acm->ctrlurb, GFP_ATOMIC); |
97d35f95 | 1630 | |
140cb81a JH |
1631 | for (;;) { |
1632 | urb = usb_get_from_anchor(&acm->delayed); | |
1633 | if (!urb) | |
1634 | break; | |
1635 | ||
1636 | acm_start_wb(acm, urb->context); | |
97d35f95 ON |
1637 | } |
1638 | ||
1639 | /* | |
1640 | * delayed error checking because we must | |
1641 | * do the write path at all cost | |
1642 | */ | |
1365baf7 | 1643 | if (rv < 0) |
e144ed28 | 1644 | goto out; |
1365baf7 | 1645 | |
e144ed28 | 1646 | rv = acm_submit_read_urbs(acm, GFP_ATOMIC); |
1365baf7 | 1647 | } |
e144ed28 | 1648 | out: |
bbf0cb3e | 1649 | spin_unlock_irq(&acm->write_lock); |
1365baf7 | 1650 | |
1365baf7 ON |
1651 | return rv; |
1652 | } | |
35758589 | 1653 | |
a91b0c50 FL |
1654 | static int acm_reset_resume(struct usb_interface *intf) |
1655 | { | |
1656 | struct acm *acm = usb_get_intfdata(intf); | |
a91b0c50 | 1657 | |
d41861ca | 1658 | if (tty_port_initialized(&acm->port)) |
aa27a094 | 1659 | tty_port_tty_hangup(&acm->port, false); |
7fb57a01 | 1660 | |
a91b0c50 FL |
1661 | return acm_resume(intf); |
1662 | } | |
1663 | ||
35758589 | 1664 | #endif /* CONFIG_PM */ |
c1479a92 | 1665 | |
1aba579f LM |
1666 | static int acm_pre_reset(struct usb_interface *intf) |
1667 | { | |
1668 | struct acm *acm = usb_get_intfdata(intf); | |
1669 | ||
1670 | clear_bit(EVENT_RX_STALL, &acm->flags); | |
9397940e | 1671 | acm->nb_index = 0; /* pending control transfers are lost */ |
1aba579f LM |
1672 | |
1673 | return 0; | |
1674 | } | |
1675 | ||
c1479a92 AT |
1676 | #define NOKIA_PCSUITE_ACM_INFO(x) \ |
1677 | USB_DEVICE_AND_INTERFACE_INFO(0x0421, x, \ | |
1678 | USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, \ | |
1679 | USB_CDC_ACM_PROTO_VENDOR) | |
1680 | ||
4035e456 TG |
1681 | #define SAMSUNG_PCSUITE_ACM_INFO(x) \ |
1682 | USB_DEVICE_AND_INTERFACE_INFO(0x04e7, x, \ | |
1683 | USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, \ | |
1684 | USB_CDC_ACM_PROTO_VENDOR) | |
1685 | ||
1da177e4 LT |
1686 | /* |
1687 | * USB driver structure. | |
1688 | */ | |
1689 | ||
6ef4852b | 1690 | static const struct usb_device_id acm_ids[] = { |
1da177e4 | 1691 | /* quirky and broken devices */ |
03894573 JT |
1692 | { USB_DEVICE(0x0424, 0x274e), /* Microchip Technology, Inc. (formerly SMSC) */ |
1693 | .driver_info = DISABLE_ECHO, }, /* DISABLE ECHO in termios flag */ | |
b20b1618 BG |
1694 | { USB_DEVICE(0x076d, 0x0006), /* Denso Cradle CU-321 */ |
1695 | .driver_info = NO_UNION_NORMAL, },/* has no union descriptor */ | |
3b59d16c DC |
1696 | { USB_DEVICE(0x17ef, 0x7000), /* Lenovo USB modem */ |
1697 | .driver_info = NO_UNION_NORMAL, },/* has no union descriptor */ | |
1da177e4 LT |
1698 | { USB_DEVICE(0x0870, 0x0001), /* Metricom GS Modem */ |
1699 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1700 | }, | |
6d853c9e CB |
1701 | { USB_DEVICE(0x045b, 0x023c), /* Renesas USB Download mode */ |
1702 | .driver_info = DISABLE_ECHO, /* Don't echo banner */ | |
1703 | }, | |
1704 | { USB_DEVICE(0x045b, 0x0248), /* Renesas USB Download mode */ | |
1705 | .driver_info = DISABLE_ECHO, /* Don't echo banner */ | |
1706 | }, | |
1707 | { USB_DEVICE(0x045b, 0x024D), /* Renesas USB Download mode */ | |
1708 | .driver_info = DISABLE_ECHO, /* Don't echo banner */ | |
1709 | }, | |
b0e2a705 AA |
1710 | { USB_DEVICE(0x0e8d, 0x0003), /* FIREFLY, MediaTek Inc; andrey.arapov@gmail.com */ |
1711 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1712 | }, | |
eafb27fa ML |
1713 | { USB_DEVICE(0x0e8d, 0x2000), /* MediaTek Inc Preloader */ |
1714 | .driver_info = DISABLE_ECHO, /* DISABLE ECHO in termios flag */ | |
1715 | }, | |
0f9c7b4a AL |
1716 | { USB_DEVICE(0x0e8d, 0x3329), /* MediaTek Inc GPS */ |
1717 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1718 | }, | |
8753e65e MO |
1719 | { USB_DEVICE(0x0482, 0x0203), /* KYOCERA AH-K3001V */ |
1720 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1721 | }, | |
91a9c921 CM |
1722 | { USB_DEVICE(0x079b, 0x000f), /* BT On-Air USB MODEM */ |
1723 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1724 | }, | |
7abcf20b AC |
1725 | { USB_DEVICE(0x0ace, 0x1602), /* ZyDAS 56K USB MODEM */ |
1726 | .driver_info = SINGLE_RX_URB, | |
1727 | }, | |
86478944 ON |
1728 | { USB_DEVICE(0x0ace, 0x1608), /* ZyDAS 56K USB MODEM */ |
1729 | .driver_info = SINGLE_RX_URB, /* firmware bug */ | |
1730 | }, | |
3dd2ae81 ON |
1731 | { USB_DEVICE(0x0ace, 0x1611), /* ZyDAS 56K USB MODEM - new version */ |
1732 | .driver_info = SINGLE_RX_URB, /* firmware bug */ | |
1733 | }, | |
df1cc78a ON |
1734 | { USB_DEVICE(0x11ca, 0x0201), /* VeriFone Mx870 Gadget Serial */ |
1735 | .driver_info = SINGLE_RX_URB, | |
1736 | }, | |
4a762569 HY |
1737 | { USB_DEVICE(0x1965, 0x0018), /* Uniden UBC125XLT */ |
1738 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1739 | }, | |
9be8456c ON |
1740 | { USB_DEVICE(0x22b8, 0x7000), /* Motorola Q Phone */ |
1741 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1742 | }, | |
6149ed5e IM |
1743 | { USB_DEVICE(0x0803, 0x3095), /* Zoom Telephonics Model 3095F USB MODEM */ |
1744 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1745 | }, | |
c8fd2c37 ES |
1746 | { USB_DEVICE(0x0572, 0x1321), /* Conexant USB MODEM CX93010 */ |
1747 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1748 | }, | |
c89c60e9 AC |
1749 | { USB_DEVICE(0x0572, 0x1324), /* Conexant USB MODEM RD02-D400 */ |
1750 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1751 | }, | |
cab98a0a XK |
1752 | { USB_DEVICE(0x0572, 0x1328), /* Shiro / Aztech USB MODEM UM-3100 */ |
1753 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1754 | }, | |
63529eaa MJ |
1755 | { USB_DEVICE(0x0572, 0x1349), /* Hiro (Conexant) USB MODEM H50228 */ |
1756 | .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ | |
1757 | }, | |
2a8cdfde JH |
1758 | { USB_DEVICE(0x20df, 0x0001), /* Simtec Electronics Entropy Key */ |
1759 | .driver_info = QUIRK_CONTROL_LINE_STATE, }, | |
cf84a691 | 1760 | { USB_DEVICE(0x2184, 0x001c) }, /* GW Instek AFG-2225 */ |
30121604 | 1761 | { USB_DEVICE(0x2184, 0x0036) }, /* GW Instek AFG-125 */ |
155df65a DT |
1762 | { USB_DEVICE(0x22b8, 0x6425), /* Motorola MOTOMAGX phones */ |
1763 | }, | |
6abff5dc KH |
1764 | /* Motorola H24 HSPA module: */ |
1765 | { USB_DEVICE(0x22b8, 0x2d91) }, /* modem */ | |
895d240d MU |
1766 | { USB_DEVICE(0x22b8, 0x2d92), /* modem + diagnostics */ |
1767 | .driver_info = NO_UNION_NORMAL, /* handle only modem interface */ | |
1768 | }, | |
1769 | { USB_DEVICE(0x22b8, 0x2d93), /* modem + AT port */ | |
1770 | .driver_info = NO_UNION_NORMAL, /* handle only modem interface */ | |
1771 | }, | |
1772 | { USB_DEVICE(0x22b8, 0x2d95), /* modem + AT port + diagnostics */ | |
1773 | .driver_info = NO_UNION_NORMAL, /* handle only modem interface */ | |
1774 | }, | |
1775 | { USB_DEVICE(0x22b8, 0x2d96), /* modem + NMEA */ | |
1776 | .driver_info = NO_UNION_NORMAL, /* handle only modem interface */ | |
1777 | }, | |
1778 | { USB_DEVICE(0x22b8, 0x2d97), /* modem + diagnostics + NMEA */ | |
1779 | .driver_info = NO_UNION_NORMAL, /* handle only modem interface */ | |
1780 | }, | |
1781 | { USB_DEVICE(0x22b8, 0x2d99), /* modem + AT port + NMEA */ | |
1782 | .driver_info = NO_UNION_NORMAL, /* handle only modem interface */ | |
1783 | }, | |
1784 | { USB_DEVICE(0x22b8, 0x2d9a), /* modem + AT port + diagnostics + NMEA */ | |
1785 | .driver_info = NO_UNION_NORMAL, /* handle only modem interface */ | |
1786 | }, | |
6abff5dc | 1787 | |
c332b4e1 AR |
1788 | { USB_DEVICE(0x0572, 0x1329), /* Hummingbird huc56s (Conexant) */ |
1789 | .driver_info = NO_UNION_NORMAL, /* union descriptor misplaced on | |
1790 | data interface instead of | |
1791 | communications interface. | |
1792 | Maybe we should define a new | |
1793 | quirk for this. */ | |
1794 | }, | |
e7d491a1 JCR |
1795 | { USB_DEVICE(0x0572, 0x1340), /* Conexant CX93010-2x UCMxx */ |
1796 | .driver_info = NO_UNION_NORMAL, | |
1797 | }, | |
036915a7 DL |
1798 | { USB_DEVICE(0x05f9, 0x4002), /* PSC Scanning, Magellan 800i */ |
1799 | .driver_info = NO_UNION_NORMAL, | |
1800 | }, | |
1f17c502 KK |
1801 | { USB_DEVICE(0x1bbb, 0x0003), /* Alcatel OT-I650 */ |
1802 | .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */ | |
1803 | }, | |
c3baa19b RN |
1804 | { USB_DEVICE(0x1576, 0x03b1), /* Maretron USB100 */ |
1805 | .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */ | |
1806 | }, | |
fe855789 JH |
1807 | { USB_DEVICE(0xfff0, 0x0100), /* DATECS FP-2000 */ |
1808 | .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */ | |
1809 | }, | |
765fb2f1 MS |
1810 | { USB_DEVICE(0x09d8, 0x0320), /* Elatec GmbH TWN3 */ |
1811 | .driver_info = NO_UNION_NORMAL, /* has misplaced union descriptor */ | |
1812 | }, | |
a10bc717 TG |
1813 | { USB_DEVICE(0x0c26, 0x0020), /* Icom ICF3400 Serie */ |
1814 | .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */ | |
1815 | }, | |
1445cbe4 LR |
1816 | { USB_DEVICE(0x0ca6, 0xa050), /* Castles VEGA3000 */ |
1817 | .driver_info = NO_UNION_NORMAL, /* reports zero length descriptor */ | |
1818 | }, | |
9be8456c | 1819 | |
15bf722e AS |
1820 | { USB_DEVICE(0x2912, 0x0001), /* ATOL FPrint */ |
1821 | .driver_info = CLEAR_HALT_CONDITIONS, | |
1822 | }, | |
1823 | ||
c1479a92 AT |
1824 | /* Nokia S60 phones expose two ACM channels. The first is |
1825 | * a modem and is picked up by the standard AT-command | |
1826 | * information below. The second is 'vendor-specific' but | |
1827 | * is treated as a serial device at the S60 end, so we want | |
1828 | * to expose it on Linux too. */ | |
1829 | { NOKIA_PCSUITE_ACM_INFO(0x042D), }, /* Nokia 3250 */ | |
1830 | { NOKIA_PCSUITE_ACM_INFO(0x04D8), }, /* Nokia 5500 Sport */ | |
1831 | { NOKIA_PCSUITE_ACM_INFO(0x04C9), }, /* Nokia E50 */ | |
1832 | { NOKIA_PCSUITE_ACM_INFO(0x0419), }, /* Nokia E60 */ | |
1833 | { NOKIA_PCSUITE_ACM_INFO(0x044D), }, /* Nokia E61 */ | |
1834 | { NOKIA_PCSUITE_ACM_INFO(0x0001), }, /* Nokia E61i */ | |
1835 | { NOKIA_PCSUITE_ACM_INFO(0x0475), }, /* Nokia E62 */ | |
1836 | { NOKIA_PCSUITE_ACM_INFO(0x0508), }, /* Nokia E65 */ | |
1837 | { NOKIA_PCSUITE_ACM_INFO(0x0418), }, /* Nokia E70 */ | |
1838 | { NOKIA_PCSUITE_ACM_INFO(0x0425), }, /* Nokia N71 */ | |
1839 | { NOKIA_PCSUITE_ACM_INFO(0x0486), }, /* Nokia N73 */ | |
1840 | { NOKIA_PCSUITE_ACM_INFO(0x04DF), }, /* Nokia N75 */ | |
1841 | { NOKIA_PCSUITE_ACM_INFO(0x000e), }, /* Nokia N77 */ | |
1842 | { NOKIA_PCSUITE_ACM_INFO(0x0445), }, /* Nokia N80 */ | |
1843 | { NOKIA_PCSUITE_ACM_INFO(0x042F), }, /* Nokia N91 & N91 8GB */ | |
1844 | { NOKIA_PCSUITE_ACM_INFO(0x048E), }, /* Nokia N92 */ | |
1845 | { NOKIA_PCSUITE_ACM_INFO(0x0420), }, /* Nokia N93 */ | |
1846 | { NOKIA_PCSUITE_ACM_INFO(0x04E6), }, /* Nokia N93i */ | |
1847 | { NOKIA_PCSUITE_ACM_INFO(0x04B2), }, /* Nokia 5700 XpressMusic */ | |
1848 | { NOKIA_PCSUITE_ACM_INFO(0x0134), }, /* Nokia 6110 Navigator (China) */ | |
1849 | { NOKIA_PCSUITE_ACM_INFO(0x046E), }, /* Nokia 6110 Navigator */ | |
1850 | { NOKIA_PCSUITE_ACM_INFO(0x002f), }, /* Nokia 6120 classic & */ | |
1851 | { NOKIA_PCSUITE_ACM_INFO(0x0088), }, /* Nokia 6121 classic */ | |
1852 | { NOKIA_PCSUITE_ACM_INFO(0x00fc), }, /* Nokia 6124 classic */ | |
1853 | { NOKIA_PCSUITE_ACM_INFO(0x0042), }, /* Nokia E51 */ | |
1854 | { NOKIA_PCSUITE_ACM_INFO(0x00b0), }, /* Nokia E66 */ | |
1855 | { NOKIA_PCSUITE_ACM_INFO(0x00ab), }, /* Nokia E71 */ | |
1856 | { NOKIA_PCSUITE_ACM_INFO(0x0481), }, /* Nokia N76 */ | |
1857 | { NOKIA_PCSUITE_ACM_INFO(0x0007), }, /* Nokia N81 & N81 8GB */ | |
1858 | { NOKIA_PCSUITE_ACM_INFO(0x0071), }, /* Nokia N82 */ | |
1859 | { NOKIA_PCSUITE_ACM_INFO(0x04F0), }, /* Nokia N95 & N95-3 NAM */ | |
1860 | { NOKIA_PCSUITE_ACM_INFO(0x0070), }, /* Nokia N95 8GB */ | |
c1479a92 AT |
1861 | { NOKIA_PCSUITE_ACM_INFO(0x0099), }, /* Nokia 6210 Navigator, RM-367 */ |
1862 | { NOKIA_PCSUITE_ACM_INFO(0x0128), }, /* Nokia 6210 Navigator, RM-419 */ | |
1863 | { NOKIA_PCSUITE_ACM_INFO(0x008f), }, /* Nokia 6220 Classic */ | |
1864 | { NOKIA_PCSUITE_ACM_INFO(0x00a0), }, /* Nokia 6650 */ | |
1865 | { NOKIA_PCSUITE_ACM_INFO(0x007b), }, /* Nokia N78 */ | |
1866 | { NOKIA_PCSUITE_ACM_INFO(0x0094), }, /* Nokia N85 */ | |
1867 | { NOKIA_PCSUITE_ACM_INFO(0x003a), }, /* Nokia N96 & N96-3 */ | |
1868 | { NOKIA_PCSUITE_ACM_INFO(0x00e9), }, /* Nokia 5320 XpressMusic */ | |
1869 | { NOKIA_PCSUITE_ACM_INFO(0x0108), }, /* Nokia 5320 XpressMusic 2G */ | |
1870 | { NOKIA_PCSUITE_ACM_INFO(0x01f5), }, /* Nokia N97, RM-505 */ | |
83a4eae9 | 1871 | { NOKIA_PCSUITE_ACM_INFO(0x02e3), }, /* Nokia 5230, RM-588 */ |
4035e456 TG |
1872 | { NOKIA_PCSUITE_ACM_INFO(0x0178), }, /* Nokia E63 */ |
1873 | { NOKIA_PCSUITE_ACM_INFO(0x010e), }, /* Nokia E75 */ | |
1874 | { NOKIA_PCSUITE_ACM_INFO(0x02d9), }, /* Nokia 6760 Slide */ | |
1875 | { NOKIA_PCSUITE_ACM_INFO(0x01d0), }, /* Nokia E52 */ | |
1876 | { NOKIA_PCSUITE_ACM_INFO(0x0223), }, /* Nokia E72 */ | |
1877 | { NOKIA_PCSUITE_ACM_INFO(0x0275), }, /* Nokia X6 */ | |
1878 | { NOKIA_PCSUITE_ACM_INFO(0x026c), }, /* Nokia N97 Mini */ | |
1879 | { NOKIA_PCSUITE_ACM_INFO(0x0154), }, /* Nokia 5800 XpressMusic */ | |
1880 | { NOKIA_PCSUITE_ACM_INFO(0x04ce), }, /* Nokia E90 */ | |
1881 | { NOKIA_PCSUITE_ACM_INFO(0x01d4), }, /* Nokia E55 */ | |
721d92fc | 1882 | { NOKIA_PCSUITE_ACM_INFO(0x0302), }, /* Nokia N8 */ |
4061fde2 TG |
1883 | { NOKIA_PCSUITE_ACM_INFO(0x0335), }, /* Nokia E7 */ |
1884 | { NOKIA_PCSUITE_ACM_INFO(0x03cd), }, /* Nokia C7 */ | |
4035e456 | 1885 | { SAMSUNG_PCSUITE_ACM_INFO(0x6651), }, /* Samsung GTi8510 (INNOV8) */ |
c1479a92 | 1886 | |
65e52f41 DP |
1887 | /* Support for Owen devices */ |
1888 | { USB_DEVICE(0x03eb, 0x0030), }, /* Owen SI30 */ | |
1889 | ||
c1479a92 AT |
1890 | /* NOTE: non-Nokia COMM/ACM/0xff is likely MSFT RNDIS... NOT a modem! */ |
1891 | ||
16142655 DT |
1892 | #if IS_ENABLED(CONFIG_INPUT_IMS_PCU) |
1893 | { USB_DEVICE(0x04d8, 0x0082), /* Application mode */ | |
1894 | .driver_info = IGNORE_DEVICE, | |
1895 | }, | |
1896 | { USB_DEVICE(0x04d8, 0x0083), /* Bootloader mode */ | |
1897 | .driver_info = IGNORE_DEVICE, | |
1898 | }, | |
1899 | #endif | |
1900 | ||
6eeb775a SY |
1901 | #if IS_ENABLED(CONFIG_IR_TOY) |
1902 | { USB_DEVICE(0x04d8, 0xfd08), | |
1903 | .driver_info = IGNORE_DEVICE, | |
1904 | }, | |
0ffc7653 SY |
1905 | |
1906 | { USB_DEVICE(0x04d8, 0xf58b), | |
1907 | .driver_info = IGNORE_DEVICE, | |
1908 | }, | |
6eeb775a SY |
1909 | #endif |
1910 | ||
5f6225a7 | 1911 | #if IS_ENABLED(CONFIG_USB_SERIAL_XR) |
039b81d5 MCC |
1912 | { USB_DEVICE(0x04e2, 0x1400), .driver_info = IGNORE_DEVICE }, |
1913 | { USB_DEVICE(0x04e2, 0x1401), .driver_info = IGNORE_DEVICE }, | |
1914 | { USB_DEVICE(0x04e2, 0x1402), .driver_info = IGNORE_DEVICE }, | |
1915 | { USB_DEVICE(0x04e2, 0x1403), .driver_info = IGNORE_DEVICE }, | |
1916 | { USB_DEVICE(0x04e2, 0x1410), .driver_info = IGNORE_DEVICE }, | |
1917 | { USB_DEVICE(0x04e2, 0x1411), .driver_info = IGNORE_DEVICE }, | |
1918 | { USB_DEVICE(0x04e2, 0x1412), .driver_info = IGNORE_DEVICE }, | |
1919 | { USB_DEVICE(0x04e2, 0x1414), .driver_info = IGNORE_DEVICE }, | |
1920 | { USB_DEVICE(0x04e2, 0x1420), .driver_info = IGNORE_DEVICE }, | |
1921 | { USB_DEVICE(0x04e2, 0x1422), .driver_info = IGNORE_DEVICE }, | |
1922 | { USB_DEVICE(0x04e2, 0x1424), .driver_info = IGNORE_DEVICE }, | |
5f6225a7 MCC |
1923 | #endif |
1924 | ||
e912e685 ON |
1925 | /*Samsung phone in firmware update mode */ |
1926 | { USB_DEVICE(0x04e8, 0x685d), | |
1927 | .driver_info = IGNORE_DEVICE, | |
1928 | }, | |
1929 | ||
f33a7f72 JJ |
1930 | /* Exclude Infineon Flash Loader utility */ |
1931 | { USB_DEVICE(0x058b, 0x0041), | |
1932 | .driver_info = IGNORE_DEVICE, | |
1933 | }, | |
1934 | ||
a4f88430 VM |
1935 | /* Exclude ETAS ES58x */ |
1936 | { USB_DEVICE(0x108c, 0x0159), /* ES581.4 */ | |
1937 | .driver_info = IGNORE_DEVICE, | |
1938 | }, | |
1939 | { USB_DEVICE(0x108c, 0x0168), /* ES582.1 */ | |
1940 | .driver_info = IGNORE_DEVICE, | |
1941 | }, | |
1942 | { USB_DEVICE(0x108c, 0x0169), /* ES584.1 */ | |
1943 | .driver_info = IGNORE_DEVICE, | |
1944 | }, | |
1945 | ||
34aabf91 DP |
1946 | { USB_DEVICE(0x1bc7, 0x0021), /* Telit 3G ACM only composition */ |
1947 | .driver_info = SEND_ZERO_PACKET, | |
1948 | }, | |
1949 | { USB_DEVICE(0x1bc7, 0x0023), /* Telit 3G ACM + ECM composition */ | |
1950 | .driver_info = SEND_ZERO_PACKET, | |
1951 | }, | |
1952 | ||
4d8654e8 YW |
1953 | /* Exclude Goodix Fingerprint Reader */ |
1954 | { USB_DEVICE(0x27c6, 0x5395), | |
1955 | .driver_info = IGNORE_DEVICE, | |
1956 | }, | |
1957 | ||
48978077 HH |
1958 | /* Exclude Heimann Sensor GmbH USB appset demo */ |
1959 | { USB_DEVICE(0x32a7, 0x0000), | |
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; | |
39b7b42b JS |
2039 | acm_tty_driver = tty_alloc_driver(ACM_TTY_MINORS, TTY_DRIVER_REAL_RAW | |
2040 | TTY_DRIVER_DYNAMIC_DEV); | |
2041 | if (IS_ERR(acm_tty_driver)) | |
2042 | return PTR_ERR(acm_tty_driver); | |
1da177e4 LT |
2043 | acm_tty_driver->driver_name = "acm", |
2044 | acm_tty_driver->name = "ttyACM", | |
1da177e4 LT |
2045 | acm_tty_driver->major = ACM_TTY_MAJOR, |
2046 | acm_tty_driver->minor_start = 0, | |
2047 | acm_tty_driver->type = TTY_DRIVER_TYPE_SERIAL, | |
2048 | acm_tty_driver->subtype = SERIAL_TYPE_NORMAL, | |
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) { | |
9f90a4dd | 2056 | tty_driver_kref_put(acm_tty_driver); |
1da177e4 LT |
2057 | return retval; |
2058 | } | |
2059 | ||
2060 | retval = usb_register(&acm_driver); | |
2061 | if (retval) { | |
2062 | tty_unregister_driver(acm_tty_driver); | |
9f90a4dd | 2063 | tty_driver_kref_put(acm_tty_driver); |
1da177e4 LT |
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); | |
9f90a4dd | 2076 | tty_driver_kref_put(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); |