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1// SPDX-License-Identifier: GPL-2.0
2/*
3 USB Driver for Sierra Wireless
4
5 Copyright (C) 2006, 2007, 2008 Kevin Lloyd <klloyd@sierrawireless.com>,
6
7 Copyright (C) 2008, 2009 Elina Pasheva, Matthew Safar, Rory Filer
8 <linux@sierrawireless.com>
9
10 IMPORTANT DISCLAIMER: This driver is not commercially supported by
11 Sierra Wireless. Use at your own risk.
12
13 Portions based on the option driver by Matthias Urlichs <smurf@smurf.noris.de>
14 Whom based his on the Keyspan driver by Hugh Blemings <hugh@blemings.org>
15*/
16/* Uncomment to log function calls */
17/* #define DEBUG */
18
19#define DRIVER_AUTHOR "Kevin Lloyd, Elina Pasheva, Matthew Safar, Rory Filer"
20#define DRIVER_DESC "USB Driver for Sierra Wireless USB modems"
21
22#include <linux/kernel.h>
23#include <linux/jiffies.h>
24#include <linux/errno.h>
25#include <linux/tty.h>
26#include <linux/slab.h>
27#include <linux/tty_flip.h>
28#include <linux/module.h>
29#include <linux/usb.h>
30#include <linux/usb/serial.h>
31
32#define SWIMS_USB_REQUEST_SetPower 0x00
33#define SWIMS_USB_REQUEST_SetNmea 0x07
34
35#define N_IN_URB_HM 8
36#define N_OUT_URB_HM 64
37#define N_IN_URB 4
38#define N_OUT_URB 4
39#define IN_BUFLEN 4096
40
41#define MAX_TRANSFER (PAGE_SIZE - 512)
42/* MAX_TRANSFER is chosen so that the VM is not stressed by
43 allocations > PAGE_SIZE and the number of packets in a page
44 is an integer 512 is the largest possible packet on EHCI */
45
46static bool nmea;
47
48struct sierra_iface_list {
49 const u8 *nums; /* array of interface numbers */
50 size_t count; /* number of elements in array */
51};
52
53struct sierra_intf_private {
54 spinlock_t susp_lock;
55 unsigned int suspended:1;
56 int in_flight;
57 unsigned int open_ports;
58};
59
60static int sierra_set_power_state(struct usb_device *udev, __u16 swiState)
61{
62 return usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
63 SWIMS_USB_REQUEST_SetPower, /* __u8 request */
64 USB_TYPE_VENDOR, /* __u8 request type */
65 swiState, /* __u16 value */
66 0, /* __u16 index */
67 NULL, /* void *data */
68 0, /* __u16 size */
69 USB_CTRL_SET_TIMEOUT); /* int timeout */
70}
71
72static int sierra_vsc_set_nmea(struct usb_device *udev, __u16 enable)
73{
74 return usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
75 SWIMS_USB_REQUEST_SetNmea, /* __u8 request */
76 USB_TYPE_VENDOR, /* __u8 request type */
77 enable, /* __u16 value */
78 0x0000, /* __u16 index */
79 NULL, /* void *data */
80 0, /* __u16 size */
81 USB_CTRL_SET_TIMEOUT); /* int timeout */
82}
83
84static int sierra_calc_num_ports(struct usb_serial *serial,
85 struct usb_serial_endpoints *epds)
86{
87 int num_ports = 0;
88 u8 ifnum, numendpoints;
89
90 ifnum = serial->interface->cur_altsetting->desc.bInterfaceNumber;
91 numendpoints = serial->interface->cur_altsetting->desc.bNumEndpoints;
92
93 /* Dummy interface present on some SKUs should be ignored */
94 if (ifnum == 0x99)
95 num_ports = 0;
96 else if (numendpoints <= 3)
97 num_ports = 1;
98 else
99 num_ports = (numendpoints-1)/2;
100 return num_ports;
101}
102
103static bool is_listed(const u8 ifnum, const struct sierra_iface_list *list)
104{
105 int i;
106
107 if (!list)
108 return false;
109
110 for (i = 0; i < list->count; i++) {
111 if (list->nums[i] == ifnum)
112 return true;
113 }
114
115 return false;
116}
117
118static u8 sierra_interface_num(struct usb_serial *serial)
119{
120 return serial->interface->cur_altsetting->desc.bInterfaceNumber;
121}
122
123static int sierra_probe(struct usb_serial *serial,
124 const struct usb_device_id *id)
125{
126 const struct sierra_iface_list *ignore_list;
127 int result = 0;
128 struct usb_device *udev;
129 u8 ifnum;
130
131 udev = serial->dev;
132 ifnum = sierra_interface_num(serial);
133
134 /*
135 * If this interface supports more than 1 alternate
136 * select the 2nd one
137 */
138 if (serial->interface->num_altsetting == 2) {
139 dev_dbg(&udev->dev, "Selecting alt setting for interface %d\n",
140 ifnum);
141 /* We know the alternate setting is 1 for the MC8785 */
142 usb_set_interface(udev, ifnum, 1);
143 }
144
145 ignore_list = (const struct sierra_iface_list *)id->driver_info;
146
147 if (is_listed(ifnum, ignore_list)) {
148 dev_dbg(&serial->dev->dev, "Ignoring interface #%d\n", ifnum);
149 return -ENODEV;
150 }
151
152 return result;
153}
154
155/* interfaces with higher memory requirements */
156static const u8 hi_memory_typeA_ifaces[] = { 0, 2 };
157static const struct sierra_iface_list typeA_interface_list = {
158 .nums = hi_memory_typeA_ifaces,
159 .count = ARRAY_SIZE(hi_memory_typeA_ifaces),
160};
161
162static const u8 hi_memory_typeB_ifaces[] = { 3, 4, 5, 6 };
163static const struct sierra_iface_list typeB_interface_list = {
164 .nums = hi_memory_typeB_ifaces,
165 .count = ARRAY_SIZE(hi_memory_typeB_ifaces),
166};
167
168/* 'ignorelist' of interfaces not served by this driver */
169static const u8 direct_ip_non_serial_ifaces[] = { 7, 8, 9, 10, 11, 19, 20 };
170static const struct sierra_iface_list direct_ip_interface_ignore = {
171 .nums = direct_ip_non_serial_ifaces,
172 .count = ARRAY_SIZE(direct_ip_non_serial_ifaces),
173};
174
175static const struct usb_device_id id_table[] = {
176 { USB_DEVICE(0x0F3D, 0x0112) }, /* Airprime/Sierra PC 5220 */
177 { USB_DEVICE(0x03F0, 0x1B1D) }, /* HP ev2200 a.k.a MC5720 */
178 { USB_DEVICE(0x03F0, 0x211D) }, /* HP ev2210 a.k.a MC5725 */
179 { USB_DEVICE(0x03F0, 0x1E1D) }, /* HP hs2300 a.k.a MC8775 */
180
181 { USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */
182 { USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */
183 { USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */
184 { USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */
185 { USB_DEVICE(0x1199, 0x0220) }, /* Sierra Wireless MC5725 */
186 { USB_DEVICE(0x1199, 0x0022) }, /* Sierra Wireless EM5725 */
187 { USB_DEVICE(0x1199, 0x0024) }, /* Sierra Wireless MC5727 */
188 { USB_DEVICE(0x1199, 0x0224) }, /* Sierra Wireless MC5727 */
189 { USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */
190 { USB_DEVICE(0x1199, 0x0021) }, /* Sierra Wireless AirCard 597E */
191 { USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */
192 { USB_DEVICE(0x1199, 0x0120) }, /* Sierra Wireless USB Dongle 595U */
193 { USB_DEVICE(0x1199, 0x0301) }, /* Sierra Wireless USB Dongle 250U */
194 /* Sierra Wireless C597 */
195 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0023, 0xFF, 0xFF, 0xFF) },
196 /* Sierra Wireless T598 */
197 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0025, 0xFF, 0xFF, 0xFF) },
198 { USB_DEVICE(0x1199, 0x0026) }, /* Sierra Wireless T11 */
199 { USB_DEVICE(0x1199, 0x0027) }, /* Sierra Wireless AC402 */
200 { USB_DEVICE(0x1199, 0x0028) }, /* Sierra Wireless MC5728 */
201 { USB_DEVICE(0x1199, 0x0029) }, /* Sierra Wireless Device */
202
203 { USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */
204 { USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */
205 { USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 */
206 { USB_DEVICE(0x1199, 0x6805) }, /* Sierra Wireless MC8765 */
207 { USB_DEVICE(0x1199, 0x6808) }, /* Sierra Wireless MC8755 */
208 { USB_DEVICE(0x1199, 0x6809) }, /* Sierra Wireless MC8765 */
209 { USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 & AC 875U */
210 { USB_DEVICE(0x1199, 0x6813) }, /* Sierra Wireless MC8775 */
211 { USB_DEVICE(0x1199, 0x6815) }, /* Sierra Wireless MC8775 */
212 { USB_DEVICE(0x1199, 0x6816) }, /* Sierra Wireless MC8775 */
213 { USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */
214 { USB_DEVICE(0x1199, 0x6821) }, /* Sierra Wireless AirCard 875U */
215 { USB_DEVICE(0x1199, 0x6822) }, /* Sierra Wireless AirCard 875E */
216 { USB_DEVICE(0x1199, 0x6832) }, /* Sierra Wireless MC8780 */
217 { USB_DEVICE(0x1199, 0x6833) }, /* Sierra Wireless MC8781 */
218 { USB_DEVICE(0x1199, 0x6834) }, /* Sierra Wireless MC8780 */
219 { USB_DEVICE(0x1199, 0x6835) }, /* Sierra Wireless MC8781 */
220 { USB_DEVICE(0x1199, 0x6838) }, /* Sierra Wireless MC8780 */
221 { USB_DEVICE(0x1199, 0x6839) }, /* Sierra Wireless MC8781 */
222 { USB_DEVICE(0x1199, 0x683A) }, /* Sierra Wireless MC8785 */
223 { USB_DEVICE(0x1199, 0x683B) }, /* Sierra Wireless MC8785 Composite */
224 /* Sierra Wireless MC8790, MC8791, MC8792 Composite */
225 { USB_DEVICE(0x1199, 0x683C) },
226 { USB_DEVICE(0x1199, 0x683D) }, /* Sierra Wireless MC8791 Composite */
227 /* Sierra Wireless MC8790, MC8791, MC8792 */
228 { USB_DEVICE(0x1199, 0x683E) },
229 { USB_DEVICE(0x1199, 0x6850) }, /* Sierra Wireless AirCard 880 */
230 { USB_DEVICE(0x1199, 0x6851) }, /* Sierra Wireless AirCard 881 */
231 { USB_DEVICE(0x1199, 0x6852) }, /* Sierra Wireless AirCard 880 E */
232 { USB_DEVICE(0x1199, 0x6853) }, /* Sierra Wireless AirCard 881 E */
233 { USB_DEVICE(0x1199, 0x6855) }, /* Sierra Wireless AirCard 880 U */
234 { USB_DEVICE(0x1199, 0x6856) }, /* Sierra Wireless AirCard 881 U */
235 { USB_DEVICE(0x1199, 0x6859) }, /* Sierra Wireless AirCard 885 E */
236 { USB_DEVICE(0x1199, 0x685A) }, /* Sierra Wireless AirCard 885 E */
237 /* Sierra Wireless C885 */
238 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6880, 0xFF, 0xFF, 0xFF)},
239 /* Sierra Wireless C888, Air Card 501, USB 303, USB 304 */
240 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6890, 0xFF, 0xFF, 0xFF)},
241 /* Sierra Wireless C22/C33 */
242 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6891, 0xFF, 0xFF, 0xFF)},
243 /* Sierra Wireless HSPA Non-Composite Device */
244 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6892, 0xFF, 0xFF, 0xFF)},
245 { USB_DEVICE(0x1199, 0x6893) }, /* Sierra Wireless Device */
246 /* Sierra Wireless Direct IP modems */
247 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x68A3, 0xFF, 0xFF, 0xFF),
248 .driver_info = (kernel_ulong_t)&direct_ip_interface_ignore
249 },
250 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x68AA, 0xFF, 0xFF, 0xFF),
251 .driver_info = (kernel_ulong_t)&direct_ip_interface_ignore
252 },
253 { USB_DEVICE(0x1199, 0x68AB) }, /* Sierra Wireless AR8550 */
254 /* AT&T Direct IP LTE modems */
255 { USB_DEVICE_AND_INTERFACE_INFO(0x0F3D, 0x68AA, 0xFF, 0xFF, 0xFF),
256 .driver_info = (kernel_ulong_t)&direct_ip_interface_ignore
257 },
258 /* Airprime/Sierra Wireless Direct IP modems */
259 { USB_DEVICE_AND_INTERFACE_INFO(0x0F3D, 0x68A3, 0xFF, 0xFF, 0xFF),
260 .driver_info = (kernel_ulong_t)&direct_ip_interface_ignore
261 },
262
263 { }
264};
265MODULE_DEVICE_TABLE(usb, id_table);
266
267
268struct sierra_port_private {
269 spinlock_t lock; /* lock the structure */
270 int outstanding_urbs; /* number of out urbs in flight */
271 struct usb_anchor active;
272 struct usb_anchor delayed;
273
274 int num_out_urbs;
275 int num_in_urbs;
276 /* Input endpoints and buffers for this port */
277 struct urb *in_urbs[N_IN_URB_HM];
278
279 /* Settings for the port */
280 int rts_state; /* Handshaking pins (outputs) */
281 int dtr_state;
282 int cts_state; /* Handshaking pins (inputs) */
283 int dsr_state;
284 int dcd_state;
285 int ri_state;
286};
287
288static int sierra_send_setup(struct usb_serial_port *port)
289{
290 struct usb_serial *serial = port->serial;
291 struct sierra_port_private *portdata;
292 __u16 interface = 0;
293 int val = 0;
294 int do_send = 0;
295 int retval;
296
297 portdata = usb_get_serial_port_data(port);
298
299 if (portdata->dtr_state)
300 val |= 0x01;
301 if (portdata->rts_state)
302 val |= 0x02;
303
304 /* If composite device then properly report interface */
305 if (serial->num_ports == 1) {
306 interface = sierra_interface_num(serial);
307 /* Control message is sent only to interfaces with
308 * interrupt_in endpoints
309 */
310 if (port->interrupt_in_urb) {
311 /* send control message */
312 do_send = 1;
313 }
314 }
315
316 /* Otherwise the need to do non-composite mapping */
317 else {
318 if (port->bulk_out_endpointAddress == 2)
319 interface = 0;
320 else if (port->bulk_out_endpointAddress == 4)
321 interface = 1;
322 else if (port->bulk_out_endpointAddress == 5)
323 interface = 2;
324
325 do_send = 1;
326 }
327 if (!do_send)
328 return 0;
329
330 retval = usb_autopm_get_interface(serial->interface);
331 if (retval < 0)
332 return retval;
333
334 retval = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
335 0x22, 0x21, val, interface, NULL, 0, USB_CTRL_SET_TIMEOUT);
336 usb_autopm_put_interface(serial->interface);
337
338 return retval;
339}
340
341static int sierra_tiocmget(struct tty_struct *tty)
342{
343 struct usb_serial_port *port = tty->driver_data;
344 unsigned int value;
345 struct sierra_port_private *portdata;
346
347 portdata = usb_get_serial_port_data(port);
348
349 value = ((portdata->rts_state) ? TIOCM_RTS : 0) |
350 ((portdata->dtr_state) ? TIOCM_DTR : 0) |
351 ((portdata->cts_state) ? TIOCM_CTS : 0) |
352 ((portdata->dsr_state) ? TIOCM_DSR : 0) |
353 ((portdata->dcd_state) ? TIOCM_CAR : 0) |
354 ((portdata->ri_state) ? TIOCM_RNG : 0);
355
356 return value;
357}
358
359static int sierra_tiocmset(struct tty_struct *tty,
360 unsigned int set, unsigned int clear)
361{
362 struct usb_serial_port *port = tty->driver_data;
363 struct sierra_port_private *portdata;
364
365 portdata = usb_get_serial_port_data(port);
366
367 if (set & TIOCM_RTS)
368 portdata->rts_state = 1;
369 if (set & TIOCM_DTR)
370 portdata->dtr_state = 1;
371
372 if (clear & TIOCM_RTS)
373 portdata->rts_state = 0;
374 if (clear & TIOCM_DTR)
375 portdata->dtr_state = 0;
376 return sierra_send_setup(port);
377}
378
379static void sierra_release_urb(struct urb *urb)
380{
381 if (urb) {
382 kfree(urb->transfer_buffer);
383 usb_free_urb(urb);
384 }
385}
386
387static void sierra_outdat_callback(struct urb *urb)
388{
389 struct usb_serial_port *port = urb->context;
390 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
391 struct sierra_intf_private *intfdata;
392 int status = urb->status;
393 unsigned long flags;
394
395 intfdata = usb_get_serial_data(port->serial);
396
397 /* free up the transfer buffer, as usb_free_urb() does not do this */
398 kfree(urb->transfer_buffer);
399 usb_autopm_put_interface_async(port->serial->interface);
400 if (status)
401 dev_dbg(&port->dev, "%s - nonzero write bulk status "
402 "received: %d\n", __func__, status);
403
404 spin_lock_irqsave(&portdata->lock, flags);
405 --portdata->outstanding_urbs;
406 spin_unlock_irqrestore(&portdata->lock, flags);
407 spin_lock_irqsave(&intfdata->susp_lock, flags);
408 --intfdata->in_flight;
409 spin_unlock_irqrestore(&intfdata->susp_lock, flags);
410
411 usb_serial_port_softint(port);
412}
413
414/* Write */
415static int sierra_write(struct tty_struct *tty, struct usb_serial_port *port,
416 const unsigned char *buf, int count)
417{
418 struct sierra_port_private *portdata;
419 struct sierra_intf_private *intfdata;
420 struct usb_serial *serial = port->serial;
421 unsigned long flags;
422 unsigned char *buffer;
423 struct urb *urb;
424 size_t writesize = min((size_t)count, (size_t)MAX_TRANSFER);
425 int retval = 0;
426
427 /* verify that we actually have some data to write */
428 if (count == 0)
429 return 0;
430
431 portdata = usb_get_serial_port_data(port);
432 intfdata = usb_get_serial_data(serial);
433
434 dev_dbg(&port->dev, "%s: write (%zd bytes)\n", __func__, writesize);
435 spin_lock_irqsave(&portdata->lock, flags);
436 dev_dbg(&port->dev, "%s - outstanding_urbs: %d\n", __func__,
437 portdata->outstanding_urbs);
438 if (portdata->outstanding_urbs > portdata->num_out_urbs) {
439 spin_unlock_irqrestore(&portdata->lock, flags);
440 dev_dbg(&port->dev, "%s - write limit hit\n", __func__);
441 return 0;
442 }
443 portdata->outstanding_urbs++;
444 dev_dbg(&port->dev, "%s - 1, outstanding_urbs: %d\n", __func__,
445 portdata->outstanding_urbs);
446 spin_unlock_irqrestore(&portdata->lock, flags);
447
448 retval = usb_autopm_get_interface_async(serial->interface);
449 if (retval < 0) {
450 spin_lock_irqsave(&portdata->lock, flags);
451 portdata->outstanding_urbs--;
452 spin_unlock_irqrestore(&portdata->lock, flags);
453 goto error_simple;
454 }
455
456 buffer = kmalloc(writesize, GFP_ATOMIC);
457 if (!buffer) {
458 retval = -ENOMEM;
459 goto error_no_buffer;
460 }
461
462 urb = usb_alloc_urb(0, GFP_ATOMIC);
463 if (!urb) {
464 retval = -ENOMEM;
465 goto error_no_urb;
466 }
467
468 memcpy(buffer, buf, writesize);
469
470 usb_serial_debug_data(&port->dev, __func__, writesize, buffer);
471
472 usb_fill_bulk_urb(urb, serial->dev,
473 usb_sndbulkpipe(serial->dev,
474 port->bulk_out_endpointAddress),
475 buffer, writesize, sierra_outdat_callback, port);
476
477 /* Handle the need to send a zero length packet */
478 urb->transfer_flags |= URB_ZERO_PACKET;
479
480 spin_lock_irqsave(&intfdata->susp_lock, flags);
481
482 if (intfdata->suspended) {
483 usb_anchor_urb(urb, &portdata->delayed);
484 spin_unlock_irqrestore(&intfdata->susp_lock, flags);
485 goto skip_power;
486 } else {
487 usb_anchor_urb(urb, &portdata->active);
488 }
489 /* send it down the pipe */
490 retval = usb_submit_urb(urb, GFP_ATOMIC);
491 if (retval) {
492 usb_unanchor_urb(urb);
493 spin_unlock_irqrestore(&intfdata->susp_lock, flags);
494 dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed "
495 "with status = %d\n", __func__, retval);
496 goto error;
497 } else {
498 intfdata->in_flight++;
499 spin_unlock_irqrestore(&intfdata->susp_lock, flags);
500 }
501
502skip_power:
503 /* we are done with this urb, so let the host driver
504 * really free it when it is finished with it */
505 usb_free_urb(urb);
506
507 return writesize;
508error:
509 usb_free_urb(urb);
510error_no_urb:
511 kfree(buffer);
512error_no_buffer:
513 spin_lock_irqsave(&portdata->lock, flags);
514 --portdata->outstanding_urbs;
515 dev_dbg(&port->dev, "%s - 2. outstanding_urbs: %d\n", __func__,
516 portdata->outstanding_urbs);
517 spin_unlock_irqrestore(&portdata->lock, flags);
518 usb_autopm_put_interface_async(serial->interface);
519error_simple:
520 return retval;
521}
522
523static void sierra_indat_callback(struct urb *urb)
524{
525 int err;
526 int endpoint;
527 struct usb_serial_port *port;
528 unsigned char *data = urb->transfer_buffer;
529 int status = urb->status;
530
531 endpoint = usb_pipeendpoint(urb->pipe);
532 port = urb->context;
533
534 if (status) {
535 dev_dbg(&port->dev, "%s: nonzero status: %d on"
536 " endpoint %02x\n", __func__, status, endpoint);
537 } else {
538 if (urb->actual_length) {
539 tty_insert_flip_string(&port->port, data,
540 urb->actual_length);
541 tty_flip_buffer_push(&port->port);
542
543 usb_serial_debug_data(&port->dev, __func__,
544 urb->actual_length, data);
545 } else {
546 dev_dbg(&port->dev, "%s: empty read urb"
547 " received\n", __func__);
548 }
549 }
550
551 /* Resubmit urb so we continue receiving */
552 if (status != -ESHUTDOWN && status != -EPERM) {
553 usb_mark_last_busy(port->serial->dev);
554 err = usb_submit_urb(urb, GFP_ATOMIC);
555 if (err && err != -EPERM)
556 dev_err(&port->dev, "resubmit read urb failed."
557 "(%d)\n", err);
558 }
559}
560
561static void sierra_instat_callback(struct urb *urb)
562{
563 int err;
564 int status = urb->status;
565 struct usb_serial_port *port = urb->context;
566 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
567 struct usb_serial *serial = port->serial;
568
569 dev_dbg(&port->dev, "%s: urb %p port %p has data %p\n", __func__,
570 urb, port, portdata);
571
572 if (status == 0) {
573 struct usb_ctrlrequest *req_pkt = urb->transfer_buffer;
574
575 if (!req_pkt) {
576 dev_dbg(&port->dev, "%s: NULL req_pkt\n",
577 __func__);
578 return;
579 }
580 if ((req_pkt->bRequestType == 0xA1) &&
581 (req_pkt->bRequest == 0x20)) {
582 int old_dcd_state;
583 unsigned char signals = *((unsigned char *)
584 urb->transfer_buffer +
585 sizeof(struct usb_ctrlrequest));
586
587 dev_dbg(&port->dev, "%s: signal x%x\n", __func__,
588 signals);
589
590 old_dcd_state = portdata->dcd_state;
591 portdata->cts_state = 1;
592 portdata->dcd_state = ((signals & 0x01) ? 1 : 0);
593 portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
594 portdata->ri_state = ((signals & 0x08) ? 1 : 0);
595
596 if (old_dcd_state && !portdata->dcd_state)
597 tty_port_tty_hangup(&port->port, true);
598 } else {
599 dev_dbg(&port->dev, "%s: type %x req %x\n",
600 __func__, req_pkt->bRequestType,
601 req_pkt->bRequest);
602 }
603 } else
604 dev_dbg(&port->dev, "%s: error %d\n", __func__, status);
605
606 /* Resubmit urb so we continue receiving IRQ data */
607 if (status != -ESHUTDOWN && status != -ENOENT) {
608 usb_mark_last_busy(serial->dev);
609 err = usb_submit_urb(urb, GFP_ATOMIC);
610 if (err && err != -EPERM)
611 dev_err(&port->dev, "%s: resubmit intr urb "
612 "failed. (%d)\n", __func__, err);
613 }
614}
615
616static int sierra_write_room(struct tty_struct *tty)
617{
618 struct usb_serial_port *port = tty->driver_data;
619 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
620 unsigned long flags;
621
622 /* try to give a good number back based on if we have any free urbs at
623 * this point in time */
624 spin_lock_irqsave(&portdata->lock, flags);
625 if (portdata->outstanding_urbs > (portdata->num_out_urbs * 2) / 3) {
626 spin_unlock_irqrestore(&portdata->lock, flags);
627 dev_dbg(&port->dev, "%s - write limit hit\n", __func__);
628 return 0;
629 }
630 spin_unlock_irqrestore(&portdata->lock, flags);
631
632 return 2048;
633}
634
635static int sierra_chars_in_buffer(struct tty_struct *tty)
636{
637 struct usb_serial_port *port = tty->driver_data;
638 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
639 unsigned long flags;
640 int chars;
641
642 /* NOTE: This overcounts somewhat. */
643 spin_lock_irqsave(&portdata->lock, flags);
644 chars = portdata->outstanding_urbs * MAX_TRANSFER;
645 spin_unlock_irqrestore(&portdata->lock, flags);
646
647 dev_dbg(&port->dev, "%s - %d\n", __func__, chars);
648
649 return chars;
650}
651
652static void sierra_stop_rx_urbs(struct usb_serial_port *port)
653{
654 int i;
655 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
656
657 for (i = 0; i < portdata->num_in_urbs; i++)
658 usb_kill_urb(portdata->in_urbs[i]);
659
660 usb_kill_urb(port->interrupt_in_urb);
661}
662
663static int sierra_submit_rx_urbs(struct usb_serial_port *port, gfp_t mem_flags)
664{
665 int ok_cnt;
666 int err = -EINVAL;
667 int i;
668 struct urb *urb;
669 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
670
671 ok_cnt = 0;
672 for (i = 0; i < portdata->num_in_urbs; i++) {
673 urb = portdata->in_urbs[i];
674 if (!urb)
675 continue;
676 err = usb_submit_urb(urb, mem_flags);
677 if (err) {
678 dev_err(&port->dev, "%s: submit urb failed: %d\n",
679 __func__, err);
680 } else {
681 ok_cnt++;
682 }
683 }
684
685 if (ok_cnt && port->interrupt_in_urb) {
686 err = usb_submit_urb(port->interrupt_in_urb, mem_flags);
687 if (err) {
688 dev_err(&port->dev, "%s: submit intr urb failed: %d\n",
689 __func__, err);
690 }
691 }
692
693 if (ok_cnt > 0) /* at least one rx urb submitted */
694 return 0;
695 else
696 return err;
697}
698
699static struct urb *sierra_setup_urb(struct usb_serial *serial, int endpoint,
700 int dir, void *ctx, int len,
701 gfp_t mem_flags,
702 usb_complete_t callback)
703{
704 struct urb *urb;
705 u8 *buf;
706
707 urb = usb_alloc_urb(0, mem_flags);
708 if (!urb)
709 return NULL;
710
711 buf = kmalloc(len, mem_flags);
712 if (buf) {
713 /* Fill URB using supplied data */
714 usb_fill_bulk_urb(urb, serial->dev,
715 usb_sndbulkpipe(serial->dev, endpoint) | dir,
716 buf, len, callback, ctx);
717
718 dev_dbg(&serial->dev->dev, "%s %c u : %p d:%p\n", __func__,
719 dir == USB_DIR_IN ? 'i' : 'o', urb, buf);
720 } else {
721 sierra_release_urb(urb);
722 urb = NULL;
723 }
724
725 return urb;
726}
727
728static void sierra_close(struct usb_serial_port *port)
729{
730 int i;
731 struct usb_serial *serial = port->serial;
732 struct sierra_port_private *portdata;
733 struct sierra_intf_private *intfdata = usb_get_serial_data(serial);
734 struct urb *urb;
735
736 portdata = usb_get_serial_port_data(port);
737
738 /*
739 * Need to take susp_lock to make sure port is not already being
740 * resumed, but no need to hold it due to initialized
741 */
742 spin_lock_irq(&intfdata->susp_lock);
743 if (--intfdata->open_ports == 0)
744 serial->interface->needs_remote_wakeup = 0;
745 spin_unlock_irq(&intfdata->susp_lock);
746
747 for (;;) {
748 urb = usb_get_from_anchor(&portdata->delayed);
749 if (!urb)
750 break;
751 kfree(urb->transfer_buffer);
752 usb_free_urb(urb);
753 usb_autopm_put_interface_async(serial->interface);
754 spin_lock_irq(&portdata->lock);
755 portdata->outstanding_urbs--;
756 spin_unlock_irq(&portdata->lock);
757 }
758
759 sierra_stop_rx_urbs(port);
760 usb_kill_anchored_urbs(&portdata->active);
761
762 for (i = 0; i < portdata->num_in_urbs; i++) {
763 sierra_release_urb(portdata->in_urbs[i]);
764 portdata->in_urbs[i] = NULL;
765 }
766
767 usb_autopm_get_interface_no_resume(serial->interface);
768}
769
770static int sierra_open(struct tty_struct *tty, struct usb_serial_port *port)
771{
772 struct sierra_port_private *portdata;
773 struct usb_serial *serial = port->serial;
774 struct sierra_intf_private *intfdata = usb_get_serial_data(serial);
775 int i;
776 int err;
777 int endpoint;
778 struct urb *urb;
779
780 portdata = usb_get_serial_port_data(port);
781
782 endpoint = port->bulk_in_endpointAddress;
783 for (i = 0; i < portdata->num_in_urbs; i++) {
784 urb = sierra_setup_urb(serial, endpoint, USB_DIR_IN, port,
785 IN_BUFLEN, GFP_KERNEL,
786 sierra_indat_callback);
787 portdata->in_urbs[i] = urb;
788 }
789 /* clear halt condition */
790 usb_clear_halt(serial->dev,
791 usb_sndbulkpipe(serial->dev, endpoint) | USB_DIR_IN);
792
793 err = sierra_submit_rx_urbs(port, GFP_KERNEL);
794 if (err)
795 goto err_submit;
796
797 spin_lock_irq(&intfdata->susp_lock);
798 if (++intfdata->open_ports == 1)
799 serial->interface->needs_remote_wakeup = 1;
800 spin_unlock_irq(&intfdata->susp_lock);
801 usb_autopm_put_interface(serial->interface);
802
803 return 0;
804
805err_submit:
806 sierra_stop_rx_urbs(port);
807
808 for (i = 0; i < portdata->num_in_urbs; i++) {
809 sierra_release_urb(portdata->in_urbs[i]);
810 portdata->in_urbs[i] = NULL;
811 }
812
813 return err;
814}
815
816
817static void sierra_dtr_rts(struct usb_serial_port *port, int on)
818{
819 struct sierra_port_private *portdata;
820
821 portdata = usb_get_serial_port_data(port);
822 portdata->rts_state = on;
823 portdata->dtr_state = on;
824
825 sierra_send_setup(port);
826}
827
828static int sierra_startup(struct usb_serial *serial)
829{
830 struct sierra_intf_private *intfdata;
831
832 intfdata = kzalloc(sizeof(*intfdata), GFP_KERNEL);
833 if (!intfdata)
834 return -ENOMEM;
835
836 spin_lock_init(&intfdata->susp_lock);
837
838 usb_set_serial_data(serial, intfdata);
839
840 /* Set Device mode to D0 */
841 sierra_set_power_state(serial->dev, 0x0000);
842
843 /* Check NMEA and set */
844 if (nmea)
845 sierra_vsc_set_nmea(serial->dev, 1);
846
847 return 0;
848}
849
850static void sierra_release(struct usb_serial *serial)
851{
852 struct sierra_intf_private *intfdata;
853
854 intfdata = usb_get_serial_data(serial);
855 kfree(intfdata);
856}
857
858static int sierra_port_probe(struct usb_serial_port *port)
859{
860 struct usb_serial *serial = port->serial;
861 struct sierra_port_private *portdata;
862 const struct sierra_iface_list *himemory_list;
863 u8 ifnum;
864
865 portdata = kzalloc(sizeof(*portdata), GFP_KERNEL);
866 if (!portdata)
867 return -ENOMEM;
868
869 spin_lock_init(&portdata->lock);
870 init_usb_anchor(&portdata->active);
871 init_usb_anchor(&portdata->delayed);
872
873 /* Assume low memory requirements */
874 portdata->num_out_urbs = N_OUT_URB;
875 portdata->num_in_urbs = N_IN_URB;
876
877 /* Determine actual memory requirements */
878 if (serial->num_ports == 1) {
879 /* Get interface number for composite device */
880 ifnum = sierra_interface_num(serial);
881 himemory_list = &typeB_interface_list;
882 } else {
883 /* This is really the usb-serial port number of the interface
884 * rather than the interface number.
885 */
886 ifnum = port->port_number;
887 himemory_list = &typeA_interface_list;
888 }
889
890 if (is_listed(ifnum, himemory_list)) {
891 portdata->num_out_urbs = N_OUT_URB_HM;
892 portdata->num_in_urbs = N_IN_URB_HM;
893 }
894
895 dev_dbg(&port->dev,
896 "Memory usage (urbs) interface #%d, in=%d, out=%d\n",
897 ifnum, portdata->num_in_urbs, portdata->num_out_urbs);
898
899 usb_set_serial_port_data(port, portdata);
900
901 return 0;
902}
903
904static int sierra_port_remove(struct usb_serial_port *port)
905{
906 struct sierra_port_private *portdata;
907
908 portdata = usb_get_serial_port_data(port);
909 usb_set_serial_port_data(port, NULL);
910 kfree(portdata);
911
912 return 0;
913}
914
915#ifdef CONFIG_PM
916static void stop_read_write_urbs(struct usb_serial *serial)
917{
918 int i;
919 struct usb_serial_port *port;
920 struct sierra_port_private *portdata;
921
922 /* Stop reading/writing urbs */
923 for (i = 0; i < serial->num_ports; ++i) {
924 port = serial->port[i];
925 portdata = usb_get_serial_port_data(port);
926 if (!portdata)
927 continue;
928 sierra_stop_rx_urbs(port);
929 usb_kill_anchored_urbs(&portdata->active);
930 }
931}
932
933static int sierra_suspend(struct usb_serial *serial, pm_message_t message)
934{
935 struct sierra_intf_private *intfdata = usb_get_serial_data(serial);
936
937 spin_lock_irq(&intfdata->susp_lock);
938 if (PMSG_IS_AUTO(message)) {
939 if (intfdata->in_flight) {
940 spin_unlock_irq(&intfdata->susp_lock);
941 return -EBUSY;
942 }
943 }
944 intfdata->suspended = 1;
945 spin_unlock_irq(&intfdata->susp_lock);
946
947 stop_read_write_urbs(serial);
948
949 return 0;
950}
951
952/* Caller must hold susp_lock. */
953static int sierra_submit_delayed_urbs(struct usb_serial_port *port)
954{
955 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
956 struct sierra_intf_private *intfdata;
957 struct urb *urb;
958 int ec = 0;
959 int err;
960
961 intfdata = usb_get_serial_data(port->serial);
962
963 for (;;) {
964 urb = usb_get_from_anchor(&portdata->delayed);
965 if (!urb)
966 break;
967
968 usb_anchor_urb(urb, &portdata->active);
969 intfdata->in_flight++;
970 err = usb_submit_urb(urb, GFP_ATOMIC);
971 if (err) {
972 dev_err(&port->dev, "%s - submit urb failed: %d",
973 __func__, err);
974 ec++;
975 intfdata->in_flight--;
976 usb_unanchor_urb(urb);
977 kfree(urb->transfer_buffer);
978 usb_free_urb(urb);
979
980 spin_lock(&portdata->lock);
981 portdata->outstanding_urbs--;
982 spin_unlock(&portdata->lock);
983 }
984 }
985
986 if (ec)
987 return -EIO;
988
989 return 0;
990}
991
992static int sierra_resume(struct usb_serial *serial)
993{
994 struct usb_serial_port *port;
995 struct sierra_intf_private *intfdata = usb_get_serial_data(serial);
996 int ec = 0;
997 int i, err;
998
999 spin_lock_irq(&intfdata->susp_lock);
1000 for (i = 0; i < serial->num_ports; i++) {
1001 port = serial->port[i];
1002
1003 if (!tty_port_initialized(&port->port))
1004 continue;
1005
1006 err = sierra_submit_delayed_urbs(port);
1007 if (err)
1008 ec++;
1009
1010 err = sierra_submit_rx_urbs(port, GFP_ATOMIC);
1011 if (err)
1012 ec++;
1013 }
1014 intfdata->suspended = 0;
1015 spin_unlock_irq(&intfdata->susp_lock);
1016
1017 return ec ? -EIO : 0;
1018}
1019
1020#else
1021#define sierra_suspend NULL
1022#define sierra_resume NULL
1023#endif
1024
1025static struct usb_serial_driver sierra_device = {
1026 .driver = {
1027 .owner = THIS_MODULE,
1028 .name = "sierra",
1029 },
1030 .description = "Sierra USB modem",
1031 .id_table = id_table,
1032 .calc_num_ports = sierra_calc_num_ports,
1033 .probe = sierra_probe,
1034 .open = sierra_open,
1035 .close = sierra_close,
1036 .dtr_rts = sierra_dtr_rts,
1037 .write = sierra_write,
1038 .write_room = sierra_write_room,
1039 .chars_in_buffer = sierra_chars_in_buffer,
1040 .tiocmget = sierra_tiocmget,
1041 .tiocmset = sierra_tiocmset,
1042 .attach = sierra_startup,
1043 .release = sierra_release,
1044 .port_probe = sierra_port_probe,
1045 .port_remove = sierra_port_remove,
1046 .suspend = sierra_suspend,
1047 .resume = sierra_resume,
1048 .read_int_callback = sierra_instat_callback,
1049};
1050
1051static struct usb_serial_driver * const serial_drivers[] = {
1052 &sierra_device, NULL
1053};
1054
1055module_usb_serial_driver(serial_drivers, id_table);
1056
1057MODULE_AUTHOR(DRIVER_AUTHOR);
1058MODULE_DESCRIPTION(DRIVER_DESC);
1059MODULE_LICENSE("GPL v2");
1060
1061module_param(nmea, bool, S_IRUGO | S_IWUSR);
1062MODULE_PARM_DESC(nmea, "NMEA streaming");
1/*
2 USB Driver for Sierra Wireless
3
4 Copyright (C) 2006, 2007, 2008 Kevin Lloyd <klloyd@sierrawireless.com>,
5
6 Copyright (C) 2008, 2009 Elina Pasheva, Matthew Safar, Rory Filer
7 <linux@sierrawireless.com>
8
9 IMPORTANT DISCLAIMER: This driver is not commercially supported by
10 Sierra Wireless. Use at your own risk.
11
12 This driver is free software; you can redistribute it and/or modify
13 it under the terms of Version 2 of the GNU General Public License as
14 published by the Free Software Foundation.
15
16 Portions based on the option driver by Matthias Urlichs <smurf@smurf.noris.de>
17 Whom based his on the Keyspan driver by Hugh Blemings <hugh@blemings.org>
18*/
19/* Uncomment to log function calls */
20/* #define DEBUG */
21
22#define DRIVER_AUTHOR "Kevin Lloyd, Elina Pasheva, Matthew Safar, Rory Filer"
23#define DRIVER_DESC "USB Driver for Sierra Wireless USB modems"
24
25#include <linux/kernel.h>
26#include <linux/jiffies.h>
27#include <linux/errno.h>
28#include <linux/tty.h>
29#include <linux/slab.h>
30#include <linux/tty_flip.h>
31#include <linux/module.h>
32#include <linux/usb.h>
33#include <linux/usb/serial.h>
34
35#define SWIMS_USB_REQUEST_SetPower 0x00
36#define SWIMS_USB_REQUEST_SetNmea 0x07
37
38#define N_IN_URB_HM 8
39#define N_OUT_URB_HM 64
40#define N_IN_URB 4
41#define N_OUT_URB 4
42#define IN_BUFLEN 4096
43
44#define MAX_TRANSFER (PAGE_SIZE - 512)
45/* MAX_TRANSFER is chosen so that the VM is not stressed by
46 allocations > PAGE_SIZE and the number of packets in a page
47 is an integer 512 is the largest possible packet on EHCI */
48
49static bool nmea;
50
51/* Used in interface blacklisting */
52struct sierra_iface_info {
53 const u32 infolen; /* number of interface numbers on blacklist */
54 const u8 *ifaceinfo; /* pointer to the array holding the numbers */
55};
56
57struct sierra_intf_private {
58 spinlock_t susp_lock;
59 unsigned int suspended:1;
60 int in_flight;
61};
62
63static int sierra_set_power_state(struct usb_device *udev, __u16 swiState)
64{
65 return usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
66 SWIMS_USB_REQUEST_SetPower, /* __u8 request */
67 USB_TYPE_VENDOR, /* __u8 request type */
68 swiState, /* __u16 value */
69 0, /* __u16 index */
70 NULL, /* void *data */
71 0, /* __u16 size */
72 USB_CTRL_SET_TIMEOUT); /* int timeout */
73}
74
75static int sierra_vsc_set_nmea(struct usb_device *udev, __u16 enable)
76{
77 return usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
78 SWIMS_USB_REQUEST_SetNmea, /* __u8 request */
79 USB_TYPE_VENDOR, /* __u8 request type */
80 enable, /* __u16 value */
81 0x0000, /* __u16 index */
82 NULL, /* void *data */
83 0, /* __u16 size */
84 USB_CTRL_SET_TIMEOUT); /* int timeout */
85}
86
87static int sierra_calc_num_ports(struct usb_serial *serial)
88{
89 int num_ports = 0;
90 u8 ifnum, numendpoints;
91
92 ifnum = serial->interface->cur_altsetting->desc.bInterfaceNumber;
93 numendpoints = serial->interface->cur_altsetting->desc.bNumEndpoints;
94
95 /* Dummy interface present on some SKUs should be ignored */
96 if (ifnum == 0x99)
97 num_ports = 0;
98 else if (numendpoints <= 3)
99 num_ports = 1;
100 else
101 num_ports = (numendpoints-1)/2;
102 return num_ports;
103}
104
105static int is_blacklisted(const u8 ifnum,
106 const struct sierra_iface_info *blacklist)
107{
108 const u8 *info;
109 int i;
110
111 if (blacklist) {
112 info = blacklist->ifaceinfo;
113
114 for (i = 0; i < blacklist->infolen; i++) {
115 if (info[i] == ifnum)
116 return 1;
117 }
118 }
119 return 0;
120}
121
122static int is_himemory(const u8 ifnum,
123 const struct sierra_iface_info *himemorylist)
124{
125 const u8 *info;
126 int i;
127
128 if (himemorylist) {
129 info = himemorylist->ifaceinfo;
130
131 for (i=0; i < himemorylist->infolen; i++) {
132 if (info[i] == ifnum)
133 return 1;
134 }
135 }
136 return 0;
137}
138
139static int sierra_calc_interface(struct usb_serial *serial)
140{
141 int interface;
142 struct usb_interface *p_interface;
143 struct usb_host_interface *p_host_interface;
144
145 /* Get the interface structure pointer from the serial struct */
146 p_interface = serial->interface;
147
148 /* Get a pointer to the host interface structure */
149 p_host_interface = p_interface->cur_altsetting;
150
151 /* read the interface descriptor for this active altsetting
152 * to find out the interface number we are on
153 */
154 interface = p_host_interface->desc.bInterfaceNumber;
155
156 return interface;
157}
158
159static int sierra_probe(struct usb_serial *serial,
160 const struct usb_device_id *id)
161{
162 int result = 0;
163 struct usb_device *udev;
164 u8 ifnum;
165
166 udev = serial->dev;
167 ifnum = sierra_calc_interface(serial);
168
169 /*
170 * If this interface supports more than 1 alternate
171 * select the 2nd one
172 */
173 if (serial->interface->num_altsetting == 2) {
174 dev_dbg(&udev->dev, "Selecting alt setting for interface %d\n",
175 ifnum);
176 /* We know the alternate setting is 1 for the MC8785 */
177 usb_set_interface(udev, ifnum, 1);
178 }
179
180 /* ifnum could have changed - by calling usb_set_interface */
181 ifnum = sierra_calc_interface(serial);
182
183 if (is_blacklisted(ifnum,
184 (struct sierra_iface_info *)id->driver_info)) {
185 dev_dbg(&serial->dev->dev,
186 "Ignoring blacklisted interface #%d\n", ifnum);
187 return -ENODEV;
188 }
189
190 return result;
191}
192
193/* interfaces with higher memory requirements */
194static const u8 hi_memory_typeA_ifaces[] = { 0, 2 };
195static const struct sierra_iface_info typeA_interface_list = {
196 .infolen = ARRAY_SIZE(hi_memory_typeA_ifaces),
197 .ifaceinfo = hi_memory_typeA_ifaces,
198};
199
200static const u8 hi_memory_typeB_ifaces[] = { 3, 4, 5, 6 };
201static const struct sierra_iface_info typeB_interface_list = {
202 .infolen = ARRAY_SIZE(hi_memory_typeB_ifaces),
203 .ifaceinfo = hi_memory_typeB_ifaces,
204};
205
206/* 'blacklist' of interfaces not served by this driver */
207static const u8 direct_ip_non_serial_ifaces[] = { 7, 8, 9, 10, 11, 19, 20 };
208static const struct sierra_iface_info direct_ip_interface_blacklist = {
209 .infolen = ARRAY_SIZE(direct_ip_non_serial_ifaces),
210 .ifaceinfo = direct_ip_non_serial_ifaces,
211};
212
213static const struct usb_device_id id_table[] = {
214 { USB_DEVICE(0x0F3D, 0x0112) }, /* Airprime/Sierra PC 5220 */
215 { USB_DEVICE(0x03F0, 0x1B1D) }, /* HP ev2200 a.k.a MC5720 */
216 { USB_DEVICE(0x03F0, 0x211D) }, /* HP ev2210 a.k.a MC5725 */
217 { USB_DEVICE(0x03F0, 0x1E1D) }, /* HP hs2300 a.k.a MC8775 */
218
219 { USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */
220 { USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */
221 { USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */
222 { USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */
223 { USB_DEVICE(0x1199, 0x0220) }, /* Sierra Wireless MC5725 */
224 { USB_DEVICE(0x1199, 0x0022) }, /* Sierra Wireless EM5725 */
225 { USB_DEVICE(0x1199, 0x0024) }, /* Sierra Wireless MC5727 */
226 { USB_DEVICE(0x1199, 0x0224) }, /* Sierra Wireless MC5727 */
227 { USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */
228 { USB_DEVICE(0x1199, 0x0021) }, /* Sierra Wireless AirCard 597E */
229 { USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */
230 { USB_DEVICE(0x1199, 0x0120) }, /* Sierra Wireless USB Dongle 595U */
231 { USB_DEVICE(0x1199, 0x0301) }, /* Sierra Wireless USB Dongle 250U */
232 /* Sierra Wireless C597 */
233 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0023, 0xFF, 0xFF, 0xFF) },
234 /* Sierra Wireless T598 */
235 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0025, 0xFF, 0xFF, 0xFF) },
236 { USB_DEVICE(0x1199, 0x0026) }, /* Sierra Wireless T11 */
237 { USB_DEVICE(0x1199, 0x0027) }, /* Sierra Wireless AC402 */
238 { USB_DEVICE(0x1199, 0x0028) }, /* Sierra Wireless MC5728 */
239 { USB_DEVICE(0x1199, 0x0029) }, /* Sierra Wireless Device */
240
241 { USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */
242 { USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */
243 { USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 */
244 { USB_DEVICE(0x1199, 0x6805) }, /* Sierra Wireless MC8765 */
245 { USB_DEVICE(0x1199, 0x6808) }, /* Sierra Wireless MC8755 */
246 { USB_DEVICE(0x1199, 0x6809) }, /* Sierra Wireless MC8765 */
247 { USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 & AC 875U */
248 { USB_DEVICE(0x1199, 0x6813) }, /* Sierra Wireless MC8775 */
249 { USB_DEVICE(0x1199, 0x6815) }, /* Sierra Wireless MC8775 */
250 { USB_DEVICE(0x1199, 0x6816) }, /* Sierra Wireless MC8775 */
251 { USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */
252 { USB_DEVICE(0x1199, 0x6821) }, /* Sierra Wireless AirCard 875U */
253 { USB_DEVICE(0x1199, 0x6822) }, /* Sierra Wireless AirCard 875E */
254 { USB_DEVICE(0x1199, 0x6832) }, /* Sierra Wireless MC8780 */
255 { USB_DEVICE(0x1199, 0x6833) }, /* Sierra Wireless MC8781 */
256 { USB_DEVICE(0x1199, 0x6834) }, /* Sierra Wireless MC8780 */
257 { USB_DEVICE(0x1199, 0x6835) }, /* Sierra Wireless MC8781 */
258 { USB_DEVICE(0x1199, 0x6838) }, /* Sierra Wireless MC8780 */
259 { USB_DEVICE(0x1199, 0x6839) }, /* Sierra Wireless MC8781 */
260 { USB_DEVICE(0x1199, 0x683A) }, /* Sierra Wireless MC8785 */
261 { USB_DEVICE(0x1199, 0x683B) }, /* Sierra Wireless MC8785 Composite */
262 /* Sierra Wireless MC8790, MC8791, MC8792 Composite */
263 { USB_DEVICE(0x1199, 0x683C) },
264 { USB_DEVICE(0x1199, 0x683D) }, /* Sierra Wireless MC8791 Composite */
265 /* Sierra Wireless MC8790, MC8791, MC8792 */
266 { USB_DEVICE(0x1199, 0x683E) },
267 { USB_DEVICE(0x1199, 0x6850) }, /* Sierra Wireless AirCard 880 */
268 { USB_DEVICE(0x1199, 0x6851) }, /* Sierra Wireless AirCard 881 */
269 { USB_DEVICE(0x1199, 0x6852) }, /* Sierra Wireless AirCard 880 E */
270 { USB_DEVICE(0x1199, 0x6853) }, /* Sierra Wireless AirCard 881 E */
271 { USB_DEVICE(0x1199, 0x6855) }, /* Sierra Wireless AirCard 880 U */
272 { USB_DEVICE(0x1199, 0x6856) }, /* Sierra Wireless AirCard 881 U */
273 { USB_DEVICE(0x1199, 0x6859) }, /* Sierra Wireless AirCard 885 E */
274 { USB_DEVICE(0x1199, 0x685A) }, /* Sierra Wireless AirCard 885 E */
275 /* Sierra Wireless C885 */
276 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6880, 0xFF, 0xFF, 0xFF)},
277 /* Sierra Wireless C888, Air Card 501, USB 303, USB 304 */
278 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6890, 0xFF, 0xFF, 0xFF)},
279 /* Sierra Wireless C22/C33 */
280 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6891, 0xFF, 0xFF, 0xFF)},
281 /* Sierra Wireless HSPA Non-Composite Device */
282 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6892, 0xFF, 0xFF, 0xFF)},
283 { USB_DEVICE(0x1199, 0x6893) }, /* Sierra Wireless Device */
284 { USB_DEVICE(0x1199, 0x68A3), /* Sierra Wireless Direct IP modems */
285 .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist
286 },
287 /* AT&T Direct IP LTE modems */
288 { USB_DEVICE_AND_INTERFACE_INFO(0x0F3D, 0x68AA, 0xFF, 0xFF, 0xFF),
289 .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist
290 },
291 { USB_DEVICE(0x0f3d, 0x68A3), /* Airprime/Sierra Wireless Direct IP modems */
292 .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist
293 },
294
295 { }
296};
297MODULE_DEVICE_TABLE(usb, id_table);
298
299
300struct sierra_port_private {
301 spinlock_t lock; /* lock the structure */
302 int outstanding_urbs; /* number of out urbs in flight */
303 struct usb_anchor active;
304 struct usb_anchor delayed;
305
306 int num_out_urbs;
307 int num_in_urbs;
308 /* Input endpoints and buffers for this port */
309 struct urb *in_urbs[N_IN_URB_HM];
310
311 /* Settings for the port */
312 int rts_state; /* Handshaking pins (outputs) */
313 int dtr_state;
314 int cts_state; /* Handshaking pins (inputs) */
315 int dsr_state;
316 int dcd_state;
317 int ri_state;
318 unsigned int opened:1;
319};
320
321static int sierra_send_setup(struct usb_serial_port *port)
322{
323 struct usb_serial *serial = port->serial;
324 struct sierra_port_private *portdata;
325 __u16 interface = 0;
326 int val = 0;
327 int do_send = 0;
328 int retval;
329
330 portdata = usb_get_serial_port_data(port);
331
332 if (portdata->dtr_state)
333 val |= 0x01;
334 if (portdata->rts_state)
335 val |= 0x02;
336
337 /* If composite device then properly report interface */
338 if (serial->num_ports == 1) {
339 interface = sierra_calc_interface(serial);
340 /* Control message is sent only to interfaces with
341 * interrupt_in endpoints
342 */
343 if (port->interrupt_in_urb) {
344 /* send control message */
345 do_send = 1;
346 }
347 }
348
349 /* Otherwise the need to do non-composite mapping */
350 else {
351 if (port->bulk_out_endpointAddress == 2)
352 interface = 0;
353 else if (port->bulk_out_endpointAddress == 4)
354 interface = 1;
355 else if (port->bulk_out_endpointAddress == 5)
356 interface = 2;
357
358 do_send = 1;
359 }
360 if (!do_send)
361 return 0;
362
363 retval = usb_autopm_get_interface(serial->interface);
364 if (retval < 0)
365 return retval;
366
367 retval = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
368 0x22, 0x21, val, interface, NULL, 0, USB_CTRL_SET_TIMEOUT);
369 usb_autopm_put_interface(serial->interface);
370
371 return retval;
372}
373
374static void sierra_set_termios(struct tty_struct *tty,
375 struct usb_serial_port *port, struct ktermios *old_termios)
376{
377 tty_termios_copy_hw(&tty->termios, old_termios);
378 sierra_send_setup(port);
379}
380
381static int sierra_tiocmget(struct tty_struct *tty)
382{
383 struct usb_serial_port *port = tty->driver_data;
384 unsigned int value;
385 struct sierra_port_private *portdata;
386
387 portdata = usb_get_serial_port_data(port);
388
389 value = ((portdata->rts_state) ? TIOCM_RTS : 0) |
390 ((portdata->dtr_state) ? TIOCM_DTR : 0) |
391 ((portdata->cts_state) ? TIOCM_CTS : 0) |
392 ((portdata->dsr_state) ? TIOCM_DSR : 0) |
393 ((portdata->dcd_state) ? TIOCM_CAR : 0) |
394 ((portdata->ri_state) ? TIOCM_RNG : 0);
395
396 return value;
397}
398
399static int sierra_tiocmset(struct tty_struct *tty,
400 unsigned int set, unsigned int clear)
401{
402 struct usb_serial_port *port = tty->driver_data;
403 struct sierra_port_private *portdata;
404
405 portdata = usb_get_serial_port_data(port);
406
407 if (set & TIOCM_RTS)
408 portdata->rts_state = 1;
409 if (set & TIOCM_DTR)
410 portdata->dtr_state = 1;
411
412 if (clear & TIOCM_RTS)
413 portdata->rts_state = 0;
414 if (clear & TIOCM_DTR)
415 portdata->dtr_state = 0;
416 return sierra_send_setup(port);
417}
418
419static void sierra_release_urb(struct urb *urb)
420{
421 struct usb_serial_port *port;
422 if (urb) {
423 port = urb->context;
424 kfree(urb->transfer_buffer);
425 usb_free_urb(urb);
426 }
427}
428
429static void sierra_outdat_callback(struct urb *urb)
430{
431 struct usb_serial_port *port = urb->context;
432 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
433 struct sierra_intf_private *intfdata;
434 int status = urb->status;
435
436 intfdata = port->serial->private;
437
438 /* free up the transfer buffer, as usb_free_urb() does not do this */
439 kfree(urb->transfer_buffer);
440 usb_autopm_put_interface_async(port->serial->interface);
441 if (status)
442 dev_dbg(&port->dev, "%s - nonzero write bulk status "
443 "received: %d\n", __func__, status);
444
445 spin_lock(&portdata->lock);
446 --portdata->outstanding_urbs;
447 spin_unlock(&portdata->lock);
448 spin_lock(&intfdata->susp_lock);
449 --intfdata->in_flight;
450 spin_unlock(&intfdata->susp_lock);
451
452 usb_serial_port_softint(port);
453}
454
455/* Write */
456static int sierra_write(struct tty_struct *tty, struct usb_serial_port *port,
457 const unsigned char *buf, int count)
458{
459 struct sierra_port_private *portdata;
460 struct sierra_intf_private *intfdata;
461 struct usb_serial *serial = port->serial;
462 unsigned long flags;
463 unsigned char *buffer;
464 struct urb *urb;
465 size_t writesize = min((size_t)count, (size_t)MAX_TRANSFER);
466 int retval = 0;
467
468 /* verify that we actually have some data to write */
469 if (count == 0)
470 return 0;
471
472 portdata = usb_get_serial_port_data(port);
473 intfdata = serial->private;
474
475 dev_dbg(&port->dev, "%s: write (%zd bytes)\n", __func__, writesize);
476 spin_lock_irqsave(&portdata->lock, flags);
477 dev_dbg(&port->dev, "%s - outstanding_urbs: %d\n", __func__,
478 portdata->outstanding_urbs);
479 if (portdata->outstanding_urbs > portdata->num_out_urbs) {
480 spin_unlock_irqrestore(&portdata->lock, flags);
481 dev_dbg(&port->dev, "%s - write limit hit\n", __func__);
482 return 0;
483 }
484 portdata->outstanding_urbs++;
485 dev_dbg(&port->dev, "%s - 1, outstanding_urbs: %d\n", __func__,
486 portdata->outstanding_urbs);
487 spin_unlock_irqrestore(&portdata->lock, flags);
488
489 retval = usb_autopm_get_interface_async(serial->interface);
490 if (retval < 0) {
491 spin_lock_irqsave(&portdata->lock, flags);
492 portdata->outstanding_urbs--;
493 spin_unlock_irqrestore(&portdata->lock, flags);
494 goto error_simple;
495 }
496
497 buffer = kmalloc(writesize, GFP_ATOMIC);
498 if (!buffer) {
499 retval = -ENOMEM;
500 goto error_no_buffer;
501 }
502
503 urb = usb_alloc_urb(0, GFP_ATOMIC);
504 if (!urb) {
505 retval = -ENOMEM;
506 goto error_no_urb;
507 }
508
509 memcpy(buffer, buf, writesize);
510
511 usb_serial_debug_data(&port->dev, __func__, writesize, buffer);
512
513 usb_fill_bulk_urb(urb, serial->dev,
514 usb_sndbulkpipe(serial->dev,
515 port->bulk_out_endpointAddress),
516 buffer, writesize, sierra_outdat_callback, port);
517
518 /* Handle the need to send a zero length packet */
519 urb->transfer_flags |= URB_ZERO_PACKET;
520
521 spin_lock_irqsave(&intfdata->susp_lock, flags);
522
523 if (intfdata->suspended) {
524 usb_anchor_urb(urb, &portdata->delayed);
525 spin_unlock_irqrestore(&intfdata->susp_lock, flags);
526 goto skip_power;
527 } else {
528 usb_anchor_urb(urb, &portdata->active);
529 }
530 /* send it down the pipe */
531 retval = usb_submit_urb(urb, GFP_ATOMIC);
532 if (retval) {
533 usb_unanchor_urb(urb);
534 spin_unlock_irqrestore(&intfdata->susp_lock, flags);
535 dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed "
536 "with status = %d\n", __func__, retval);
537 goto error;
538 } else {
539 intfdata->in_flight++;
540 spin_unlock_irqrestore(&intfdata->susp_lock, flags);
541 }
542
543skip_power:
544 /* we are done with this urb, so let the host driver
545 * really free it when it is finished with it */
546 usb_free_urb(urb);
547
548 return writesize;
549error:
550 usb_free_urb(urb);
551error_no_urb:
552 kfree(buffer);
553error_no_buffer:
554 spin_lock_irqsave(&portdata->lock, flags);
555 --portdata->outstanding_urbs;
556 dev_dbg(&port->dev, "%s - 2. outstanding_urbs: %d\n", __func__,
557 portdata->outstanding_urbs);
558 spin_unlock_irqrestore(&portdata->lock, flags);
559 usb_autopm_put_interface_async(serial->interface);
560error_simple:
561 return retval;
562}
563
564static void sierra_indat_callback(struct urb *urb)
565{
566 int err;
567 int endpoint;
568 struct usb_serial_port *port;
569 unsigned char *data = urb->transfer_buffer;
570 int status = urb->status;
571
572 endpoint = usb_pipeendpoint(urb->pipe);
573 port = urb->context;
574
575 if (status) {
576 dev_dbg(&port->dev, "%s: nonzero status: %d on"
577 " endpoint %02x\n", __func__, status, endpoint);
578 } else {
579 if (urb->actual_length) {
580 tty_insert_flip_string(&port->port, data,
581 urb->actual_length);
582 tty_flip_buffer_push(&port->port);
583
584 usb_serial_debug_data(&port->dev, __func__,
585 urb->actual_length, data);
586 } else {
587 dev_dbg(&port->dev, "%s: empty read urb"
588 " received\n", __func__);
589 }
590 }
591
592 /* Resubmit urb so we continue receiving */
593 if (status != -ESHUTDOWN && status != -EPERM) {
594 usb_mark_last_busy(port->serial->dev);
595 err = usb_submit_urb(urb, GFP_ATOMIC);
596 if (err && err != -EPERM)
597 dev_err(&port->dev, "resubmit read urb failed."
598 "(%d)\n", err);
599 }
600}
601
602static void sierra_instat_callback(struct urb *urb)
603{
604 int err;
605 int status = urb->status;
606 struct usb_serial_port *port = urb->context;
607 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
608 struct usb_serial *serial = port->serial;
609
610 dev_dbg(&port->dev, "%s: urb %p port %p has data %p\n", __func__,
611 urb, port, portdata);
612
613 if (status == 0) {
614 struct usb_ctrlrequest *req_pkt =
615 (struct usb_ctrlrequest *)urb->transfer_buffer;
616
617 if (!req_pkt) {
618 dev_dbg(&port->dev, "%s: NULL req_pkt\n",
619 __func__);
620 return;
621 }
622 if ((req_pkt->bRequestType == 0xA1) &&
623 (req_pkt->bRequest == 0x20)) {
624 int old_dcd_state;
625 unsigned char signals = *((unsigned char *)
626 urb->transfer_buffer +
627 sizeof(struct usb_ctrlrequest));
628
629 dev_dbg(&port->dev, "%s: signal x%x\n", __func__,
630 signals);
631
632 old_dcd_state = portdata->dcd_state;
633 portdata->cts_state = 1;
634 portdata->dcd_state = ((signals & 0x01) ? 1 : 0);
635 portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
636 portdata->ri_state = ((signals & 0x08) ? 1 : 0);
637
638 if (old_dcd_state && !portdata->dcd_state)
639 tty_port_tty_hangup(&port->port, true);
640 } else {
641 dev_dbg(&port->dev, "%s: type %x req %x\n",
642 __func__, req_pkt->bRequestType,
643 req_pkt->bRequest);
644 }
645 } else
646 dev_dbg(&port->dev, "%s: error %d\n", __func__, status);
647
648 /* Resubmit urb so we continue receiving IRQ data */
649 if (status != -ESHUTDOWN && status != -ENOENT) {
650 usb_mark_last_busy(serial->dev);
651 err = usb_submit_urb(urb, GFP_ATOMIC);
652 if (err && err != -EPERM)
653 dev_err(&port->dev, "%s: resubmit intr urb "
654 "failed. (%d)\n", __func__, err);
655 }
656}
657
658static int sierra_write_room(struct tty_struct *tty)
659{
660 struct usb_serial_port *port = tty->driver_data;
661 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
662 unsigned long flags;
663
664 /* try to give a good number back based on if we have any free urbs at
665 * this point in time */
666 spin_lock_irqsave(&portdata->lock, flags);
667 if (portdata->outstanding_urbs > (portdata->num_out_urbs * 2) / 3) {
668 spin_unlock_irqrestore(&portdata->lock, flags);
669 dev_dbg(&port->dev, "%s - write limit hit\n", __func__);
670 return 0;
671 }
672 spin_unlock_irqrestore(&portdata->lock, flags);
673
674 return 2048;
675}
676
677static void sierra_stop_rx_urbs(struct usb_serial_port *port)
678{
679 int i;
680 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
681
682 for (i = 0; i < portdata->num_in_urbs; i++)
683 usb_kill_urb(portdata->in_urbs[i]);
684
685 usb_kill_urb(port->interrupt_in_urb);
686}
687
688static int sierra_submit_rx_urbs(struct usb_serial_port *port, gfp_t mem_flags)
689{
690 int ok_cnt;
691 int err = -EINVAL;
692 int i;
693 struct urb *urb;
694 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
695
696 ok_cnt = 0;
697 for (i = 0; i < portdata->num_in_urbs; i++) {
698 urb = portdata->in_urbs[i];
699 if (!urb)
700 continue;
701 err = usb_submit_urb(urb, mem_flags);
702 if (err) {
703 dev_err(&port->dev, "%s: submit urb failed: %d\n",
704 __func__, err);
705 } else {
706 ok_cnt++;
707 }
708 }
709
710 if (ok_cnt && port->interrupt_in_urb) {
711 err = usb_submit_urb(port->interrupt_in_urb, mem_flags);
712 if (err) {
713 dev_err(&port->dev, "%s: submit intr urb failed: %d\n",
714 __func__, err);
715 }
716 }
717
718 if (ok_cnt > 0) /* at least one rx urb submitted */
719 return 0;
720 else
721 return err;
722}
723
724static struct urb *sierra_setup_urb(struct usb_serial *serial, int endpoint,
725 int dir, void *ctx, int len,
726 gfp_t mem_flags,
727 usb_complete_t callback)
728{
729 struct urb *urb;
730 u8 *buf;
731
732 if (endpoint == -1)
733 return NULL;
734
735 urb = usb_alloc_urb(0, mem_flags);
736 if (!urb)
737 return NULL;
738
739 buf = kmalloc(len, mem_flags);
740 if (buf) {
741 /* Fill URB using supplied data */
742 usb_fill_bulk_urb(urb, serial->dev,
743 usb_sndbulkpipe(serial->dev, endpoint) | dir,
744 buf, len, callback, ctx);
745
746 dev_dbg(&serial->dev->dev, "%s %c u : %p d:%p\n", __func__,
747 dir == USB_DIR_IN ? 'i' : 'o', urb, buf);
748 } else {
749 sierra_release_urb(urb);
750 urb = NULL;
751 }
752
753 return urb;
754}
755
756static void sierra_close(struct usb_serial_port *port)
757{
758 int i;
759 struct usb_serial *serial = port->serial;
760 struct sierra_port_private *portdata;
761 struct sierra_intf_private *intfdata = port->serial->private;
762
763 portdata = usb_get_serial_port_data(port);
764
765 portdata->rts_state = 0;
766 portdata->dtr_state = 0;
767
768 mutex_lock(&serial->disc_mutex);
769 if (!serial->disconnected) {
770 serial->interface->needs_remote_wakeup = 0;
771 /* odd error handling due to pm counters */
772 if (!usb_autopm_get_interface(serial->interface))
773 sierra_send_setup(port);
774 else
775 usb_autopm_get_interface_no_resume(serial->interface);
776
777 }
778 mutex_unlock(&serial->disc_mutex);
779 spin_lock_irq(&intfdata->susp_lock);
780 portdata->opened = 0;
781 spin_unlock_irq(&intfdata->susp_lock);
782
783 sierra_stop_rx_urbs(port);
784 for (i = 0; i < portdata->num_in_urbs; i++) {
785 sierra_release_urb(portdata->in_urbs[i]);
786 portdata->in_urbs[i] = NULL;
787 }
788}
789
790static int sierra_open(struct tty_struct *tty, struct usb_serial_port *port)
791{
792 struct sierra_port_private *portdata;
793 struct usb_serial *serial = port->serial;
794 struct sierra_intf_private *intfdata = serial->private;
795 int i;
796 int err;
797 int endpoint;
798 struct urb *urb;
799
800 portdata = usb_get_serial_port_data(port);
801
802 /* Set some sane defaults */
803 portdata->rts_state = 1;
804 portdata->dtr_state = 1;
805
806
807 endpoint = port->bulk_in_endpointAddress;
808 for (i = 0; i < portdata->num_in_urbs; i++) {
809 urb = sierra_setup_urb(serial, endpoint, USB_DIR_IN, port,
810 IN_BUFLEN, GFP_KERNEL,
811 sierra_indat_callback);
812 portdata->in_urbs[i] = urb;
813 }
814 /* clear halt condition */
815 usb_clear_halt(serial->dev,
816 usb_sndbulkpipe(serial->dev, endpoint) | USB_DIR_IN);
817
818 err = sierra_submit_rx_urbs(port, GFP_KERNEL);
819 if (err) {
820 /* get rid of everything as in close */
821 sierra_close(port);
822 /* restore balance for autopm */
823 if (!serial->disconnected)
824 usb_autopm_put_interface(serial->interface);
825 return err;
826 }
827 sierra_send_setup(port);
828
829 serial->interface->needs_remote_wakeup = 1;
830 spin_lock_irq(&intfdata->susp_lock);
831 portdata->opened = 1;
832 spin_unlock_irq(&intfdata->susp_lock);
833 usb_autopm_put_interface(serial->interface);
834
835 return 0;
836}
837
838
839static void sierra_dtr_rts(struct usb_serial_port *port, int on)
840{
841 struct sierra_port_private *portdata;
842
843 portdata = usb_get_serial_port_data(port);
844 portdata->rts_state = on;
845 portdata->dtr_state = on;
846
847 sierra_send_setup(port);
848}
849
850static int sierra_startup(struct usb_serial *serial)
851{
852 struct sierra_intf_private *intfdata;
853
854 intfdata = kzalloc(sizeof(*intfdata), GFP_KERNEL);
855 if (!intfdata)
856 return -ENOMEM;
857
858 spin_lock_init(&intfdata->susp_lock);
859
860 usb_set_serial_data(serial, intfdata);
861
862 /* Set Device mode to D0 */
863 sierra_set_power_state(serial->dev, 0x0000);
864
865 /* Check NMEA and set */
866 if (nmea)
867 sierra_vsc_set_nmea(serial->dev, 1);
868
869 return 0;
870}
871
872static void sierra_release(struct usb_serial *serial)
873{
874 struct sierra_intf_private *intfdata;
875
876 intfdata = usb_get_serial_data(serial);
877 kfree(intfdata);
878}
879
880static int sierra_port_probe(struct usb_serial_port *port)
881{
882 struct usb_serial *serial = port->serial;
883 struct sierra_port_private *portdata;
884 const struct sierra_iface_info *himemoryp;
885 u8 ifnum;
886
887 portdata = kzalloc(sizeof(*portdata), GFP_KERNEL);
888 if (!portdata)
889 return -ENOMEM;
890
891 spin_lock_init(&portdata->lock);
892 init_usb_anchor(&portdata->active);
893 init_usb_anchor(&portdata->delayed);
894
895 /* Assume low memory requirements */
896 portdata->num_out_urbs = N_OUT_URB;
897 portdata->num_in_urbs = N_IN_URB;
898
899 /* Determine actual memory requirements */
900 if (serial->num_ports == 1) {
901 /* Get interface number for composite device */
902 ifnum = sierra_calc_interface(serial);
903 himemoryp = &typeB_interface_list;
904 } else {
905 /* This is really the usb-serial port number of the interface
906 * rather than the interface number.
907 */
908 ifnum = port->port_number;
909 himemoryp = &typeA_interface_list;
910 }
911
912 if (is_himemory(ifnum, himemoryp)) {
913 portdata->num_out_urbs = N_OUT_URB_HM;
914 portdata->num_in_urbs = N_IN_URB_HM;
915 }
916
917 dev_dbg(&port->dev,
918 "Memory usage (urbs) interface #%d, in=%d, out=%d\n",
919 ifnum, portdata->num_in_urbs, portdata->num_out_urbs);
920
921 usb_set_serial_port_data(port, portdata);
922
923 return 0;
924}
925
926static int sierra_port_remove(struct usb_serial_port *port)
927{
928 struct sierra_port_private *portdata;
929
930 portdata = usb_get_serial_port_data(port);
931 kfree(portdata);
932
933 return 0;
934}
935
936#ifdef CONFIG_PM
937static void stop_read_write_urbs(struct usb_serial *serial)
938{
939 int i;
940 struct usb_serial_port *port;
941 struct sierra_port_private *portdata;
942
943 /* Stop reading/writing urbs */
944 for (i = 0; i < serial->num_ports; ++i) {
945 port = serial->port[i];
946 portdata = usb_get_serial_port_data(port);
947 sierra_stop_rx_urbs(port);
948 usb_kill_anchored_urbs(&portdata->active);
949 }
950}
951
952static int sierra_suspend(struct usb_serial *serial, pm_message_t message)
953{
954 struct sierra_intf_private *intfdata;
955 int b;
956
957 if (PMSG_IS_AUTO(message)) {
958 intfdata = serial->private;
959 spin_lock_irq(&intfdata->susp_lock);
960 b = intfdata->in_flight;
961
962 if (b) {
963 spin_unlock_irq(&intfdata->susp_lock);
964 return -EBUSY;
965 } else {
966 intfdata->suspended = 1;
967 spin_unlock_irq(&intfdata->susp_lock);
968 }
969 }
970 stop_read_write_urbs(serial);
971
972 return 0;
973}
974
975static int sierra_resume(struct usb_serial *serial)
976{
977 struct usb_serial_port *port;
978 struct sierra_intf_private *intfdata = serial->private;
979 struct sierra_port_private *portdata;
980 struct urb *urb;
981 int ec = 0;
982 int i, err;
983
984 spin_lock_irq(&intfdata->susp_lock);
985 for (i = 0; i < serial->num_ports; i++) {
986 port = serial->port[i];
987 portdata = usb_get_serial_port_data(port);
988
989 while ((urb = usb_get_from_anchor(&portdata->delayed))) {
990 usb_anchor_urb(urb, &portdata->active);
991 intfdata->in_flight++;
992 err = usb_submit_urb(urb, GFP_ATOMIC);
993 if (err < 0) {
994 intfdata->in_flight--;
995 usb_unanchor_urb(urb);
996 usb_scuttle_anchored_urbs(&portdata->delayed);
997 break;
998 }
999 }
1000
1001 if (portdata->opened) {
1002 err = sierra_submit_rx_urbs(port, GFP_ATOMIC);
1003 if (err)
1004 ec++;
1005 }
1006 }
1007 intfdata->suspended = 0;
1008 spin_unlock_irq(&intfdata->susp_lock);
1009
1010 return ec ? -EIO : 0;
1011}
1012
1013#else
1014#define sierra_suspend NULL
1015#define sierra_resume NULL
1016#endif
1017
1018static struct usb_serial_driver sierra_device = {
1019 .driver = {
1020 .owner = THIS_MODULE,
1021 .name = "sierra",
1022 },
1023 .description = "Sierra USB modem",
1024 .id_table = id_table,
1025 .calc_num_ports = sierra_calc_num_ports,
1026 .probe = sierra_probe,
1027 .open = sierra_open,
1028 .close = sierra_close,
1029 .dtr_rts = sierra_dtr_rts,
1030 .write = sierra_write,
1031 .write_room = sierra_write_room,
1032 .set_termios = sierra_set_termios,
1033 .tiocmget = sierra_tiocmget,
1034 .tiocmset = sierra_tiocmset,
1035 .attach = sierra_startup,
1036 .release = sierra_release,
1037 .port_probe = sierra_port_probe,
1038 .port_remove = sierra_port_remove,
1039 .suspend = sierra_suspend,
1040 .resume = sierra_resume,
1041 .read_int_callback = sierra_instat_callback,
1042};
1043
1044static struct usb_serial_driver * const serial_drivers[] = {
1045 &sierra_device, NULL
1046};
1047
1048module_usb_serial_driver(serial_drivers, id_table);
1049
1050MODULE_AUTHOR(DRIVER_AUTHOR);
1051MODULE_DESCRIPTION(DRIVER_DESC);
1052MODULE_LICENSE("GPL");
1053
1054module_param(nmea, bool, S_IRUGO | S_IWUSR);
1055MODULE_PARM_DESC(nmea, "NMEA streaming");