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21#define DRIVER_VERSION "v.1.7.16"
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
46
47
48
49static int debug;
50static int nmea;
51
52
53struct sierra_iface_info {
54 const u32 infolen;
55 const u8 *ifaceinfo;
56};
57
58struct sierra_intf_private {
59 spinlock_t susp_lock;
60 unsigned int suspended:1;
61 int in_flight;
62};
63
64static int sierra_set_power_state(struct usb_device *udev, __u16 swiState)
65{
66 int result;
67 dev_dbg(&udev->dev, "%s\n", __func__);
68 result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
69 SWIMS_USB_REQUEST_SetPower,
70 USB_TYPE_VENDOR,
71 swiState,
72 0,
73 NULL,
74 0,
75 USB_CTRL_SET_TIMEOUT);
76 return result;
77}
78
79static int sierra_vsc_set_nmea(struct usb_device *udev, __u16 enable)
80{
81 int result;
82 dev_dbg(&udev->dev, "%s\n", __func__);
83 result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
84 SWIMS_USB_REQUEST_SetNmea,
85 USB_TYPE_VENDOR,
86 enable,
87 0x0000,
88 NULL,
89 0,
90 USB_CTRL_SET_TIMEOUT);
91 return result;
92}
93
94static int sierra_calc_num_ports(struct usb_serial *serial)
95{
96 int num_ports = 0;
97 u8 ifnum, numendpoints;
98
99 dev_dbg(&serial->dev->dev, "%s\n", __func__);
100
101 ifnum = serial->interface->cur_altsetting->desc.bInterfaceNumber;
102 numendpoints = serial->interface->cur_altsetting->desc.bNumEndpoints;
103
104
105 if (ifnum == 0x99)
106 num_ports = 0;
107 else if (numendpoints <= 3)
108 num_ports = 1;
109 else
110 num_ports = (numendpoints-1)/2;
111 return num_ports;
112}
113
114static int is_blacklisted(const u8 ifnum,
115 const struct sierra_iface_info *blacklist)
116{
117 const u8 *info;
118 int i;
119
120 if (blacklist) {
121 info = blacklist->ifaceinfo;
122
123 for (i = 0; i < blacklist->infolen; i++) {
124 if (info[i] == ifnum)
125 return 1;
126 }
127 }
128 return 0;
129}
130
131static int is_himemory(const u8 ifnum,
132 const struct sierra_iface_info *himemorylist)
133{
134 const u8 *info;
135 int i;
136
137 if (himemorylist) {
138 info = himemorylist->ifaceinfo;
139
140 for (i=0; i < himemorylist->infolen; i++) {
141 if (info[i] == ifnum)
142 return 1;
143 }
144 }
145 return 0;
146}
147
148static int sierra_calc_interface(struct usb_serial *serial)
149{
150 int interface;
151 struct usb_interface *p_interface;
152 struct usb_host_interface *p_host_interface;
153 dev_dbg(&serial->dev->dev, "%s\n", __func__);
154
155
156 p_interface = serial->interface;
157
158
159 p_host_interface = p_interface->cur_altsetting;
160
161
162
163
164 interface = p_host_interface->desc.bInterfaceNumber;
165
166 return interface;
167}
168
169static int sierra_probe(struct usb_serial *serial,
170 const struct usb_device_id *id)
171{
172 int result = 0;
173 struct usb_device *udev;
174 struct sierra_intf_private *data;
175 u8 ifnum;
176
177 udev = serial->dev;
178 dev_dbg(&udev->dev, "%s\n", __func__);
179
180 ifnum = sierra_calc_interface(serial);
181
182
183
184
185 if (serial->interface->num_altsetting == 2) {
186 dev_dbg(&udev->dev, "Selecting alt setting for interface %d\n",
187 ifnum);
188
189 usb_set_interface(udev, ifnum, 1);
190 }
191
192
193 ifnum = sierra_calc_interface(serial);
194
195 if (is_blacklisted(ifnum,
196 (struct sierra_iface_info *)id->driver_info)) {
197 dev_dbg(&serial->dev->dev,
198 "Ignoring blacklisted interface #%d\n", ifnum);
199 return -ENODEV;
200 }
201
202 data = serial->private = kzalloc(sizeof(struct sierra_intf_private), GFP_KERNEL);
203 if (!data)
204 return -ENOMEM;
205 spin_lock_init(&data->susp_lock);
206
207 return result;
208}
209
210
211static const u8 hi_memory_typeA_ifaces[] = { 0, 2 };
212static const struct sierra_iface_info typeA_interface_list = {
213 .infolen = ARRAY_SIZE(hi_memory_typeA_ifaces),
214 .ifaceinfo = hi_memory_typeA_ifaces,
215};
216
217static const u8 hi_memory_typeB_ifaces[] = { 3, 4, 5, 6 };
218static const struct sierra_iface_info typeB_interface_list = {
219 .infolen = ARRAY_SIZE(hi_memory_typeB_ifaces),
220 .ifaceinfo = hi_memory_typeB_ifaces,
221};
222
223
224static const u8 direct_ip_non_serial_ifaces[] = { 7, 8, 9, 10, 11 };
225static const struct sierra_iface_info direct_ip_interface_blacklist = {
226 .infolen = ARRAY_SIZE(direct_ip_non_serial_ifaces),
227 .ifaceinfo = direct_ip_non_serial_ifaces,
228};
229
230static const struct usb_device_id id_table[] = {
231 { USB_DEVICE(0x0F3D, 0x0112) },
232 { USB_DEVICE(0x03F0, 0x1B1D) },
233 { USB_DEVICE(0x03F0, 0x211D) },
234 { USB_DEVICE(0x03F0, 0x1E1D) },
235
236 { USB_DEVICE(0x1199, 0x0017) },
237 { USB_DEVICE(0x1199, 0x0018) },
238 { USB_DEVICE(0x1199, 0x0218) },
239 { USB_DEVICE(0x1199, 0x0020) },
240 { USB_DEVICE(0x1199, 0x0220) },
241 { USB_DEVICE(0x1199, 0x0022) },
242 { USB_DEVICE(0x1199, 0x0024) },
243 { USB_DEVICE(0x1199, 0x0224) },
244 { USB_DEVICE(0x1199, 0x0019) },
245 { USB_DEVICE(0x1199, 0x0021) },
246 { USB_DEVICE(0x1199, 0x0112) },
247 { USB_DEVICE(0x1199, 0x0120) },
248
249 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0023, 0xFF, 0xFF, 0xFF) },
250
251 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0025, 0xFF, 0xFF, 0xFF) },
252 { USB_DEVICE(0x1199, 0x0026) },
253 { USB_DEVICE(0x1199, 0x0027) },
254 { USB_DEVICE(0x1199, 0x0028) },
255 { USB_DEVICE(0x1199, 0x0029) },
256
257 { USB_DEVICE(0x1199, 0x6802) },
258 { USB_DEVICE(0x1199, 0x6803) },
259 { USB_DEVICE(0x1199, 0x6804) },
260 { USB_DEVICE(0x1199, 0x6805) },
261 { USB_DEVICE(0x1199, 0x6808) },
262 { USB_DEVICE(0x1199, 0x6809) },
263 { USB_DEVICE(0x1199, 0x6812) },
264 { USB_DEVICE(0x1199, 0x6813) },
265 { USB_DEVICE(0x1199, 0x6815) },
266 { USB_DEVICE(0x1199, 0x6816) },
267 { USB_DEVICE(0x1199, 0x6820) },
268 { USB_DEVICE(0x1199, 0x6821) },
269 { USB_DEVICE(0x1199, 0x6822) },
270 { USB_DEVICE(0x1199, 0x6832) },
271 { USB_DEVICE(0x1199, 0x6833) },
272 { USB_DEVICE(0x1199, 0x6834) },
273 { USB_DEVICE(0x1199, 0x6835) },
274 { USB_DEVICE(0x1199, 0x6838) },
275 { USB_DEVICE(0x1199, 0x6839) },
276 { USB_DEVICE(0x1199, 0x683A) },
277 { USB_DEVICE(0x1199, 0x683B) },
278
279 { USB_DEVICE(0x1199, 0x683C) },
280 { USB_DEVICE(0x1199, 0x683D) },
281
282 { USB_DEVICE(0x1199, 0x683E) },
283 { USB_DEVICE(0x1199, 0x6850) },
284 { USB_DEVICE(0x1199, 0x6851) },
285 { USB_DEVICE(0x1199, 0x6852) },
286 { USB_DEVICE(0x1199, 0x6853) },
287 { USB_DEVICE(0x1199, 0x6855) },
288 { USB_DEVICE(0x1199, 0x6856) },
289 { USB_DEVICE(0x1199, 0x6859) },
290 { USB_DEVICE(0x1199, 0x685A) },
291
292 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6880, 0xFF, 0xFF, 0xFF)},
293
294 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6890, 0xFF, 0xFF, 0xFF)},
295
296 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6891, 0xFF, 0xFF, 0xFF)},
297
298 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6892, 0xFF, 0xFF, 0xFF)},
299 { USB_DEVICE(0x1199, 0x6893) },
300 { USB_DEVICE(0x1199, 0x68A3),
301 .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist
302 },
303 { USB_DEVICE(0x413C, 0x08133) },
304
305 { }
306};
307MODULE_DEVICE_TABLE(usb, id_table);
308
309
310struct sierra_port_private {
311 spinlock_t lock;
312 int outstanding_urbs;
313 struct usb_anchor active;
314 struct usb_anchor delayed;
315
316 int num_out_urbs;
317 int num_in_urbs;
318
319 struct urb *in_urbs[N_IN_URB_HM];
320
321
322 int rts_state;
323 int dtr_state;
324 int cts_state;
325 int dsr_state;
326 int dcd_state;
327 int ri_state;
328 unsigned int opened:1;
329};
330
331static int sierra_send_setup(struct usb_serial_port *port)
332{
333 struct usb_serial *serial = port->serial;
334 struct sierra_port_private *portdata;
335 __u16 interface = 0;
336 int val = 0;
337 int do_send = 0;
338 int retval;
339
340 dev_dbg(&port->dev, "%s\n", __func__);
341
342 portdata = usb_get_serial_port_data(port);
343
344 if (portdata->dtr_state)
345 val |= 0x01;
346 if (portdata->rts_state)
347 val |= 0x02;
348
349
350 if (serial->num_ports == 1) {
351 interface = sierra_calc_interface(serial);
352
353
354
355 if (port->interrupt_in_urb) {
356
357 do_send = 1;
358 }
359 }
360
361
362 else {
363 if (port->bulk_out_endpointAddress == 2)
364 interface = 0;
365 else if (port->bulk_out_endpointAddress == 4)
366 interface = 1;
367 else if (port->bulk_out_endpointAddress == 5)
368 interface = 2;
369
370 do_send = 1;
371 }
372 if (!do_send)
373 return 0;
374
375 usb_autopm_get_interface(serial->interface);
376 retval = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
377 0x22, 0x21, val, interface, NULL, 0, USB_CTRL_SET_TIMEOUT);
378 usb_autopm_put_interface(serial->interface);
379
380 return retval;
381}
382
383static void sierra_set_termios(struct tty_struct *tty,
384 struct usb_serial_port *port, struct ktermios *old_termios)
385{
386 dev_dbg(&port->dev, "%s\n", __func__);
387 tty_termios_copy_hw(tty->termios, old_termios);
388 sierra_send_setup(port);
389}
390
391static int sierra_tiocmget(struct tty_struct *tty, struct file *file)
392{
393 struct usb_serial_port *port = tty->driver_data;
394 unsigned int value;
395 struct sierra_port_private *portdata;
396
397 dev_dbg(&port->dev, "%s\n", __func__);
398 portdata = usb_get_serial_port_data(port);
399
400 value = ((portdata->rts_state) ? TIOCM_RTS : 0) |
401 ((portdata->dtr_state) ? TIOCM_DTR : 0) |
402 ((portdata->cts_state) ? TIOCM_CTS : 0) |
403 ((portdata->dsr_state) ? TIOCM_DSR : 0) |
404 ((portdata->dcd_state) ? TIOCM_CAR : 0) |
405 ((portdata->ri_state) ? TIOCM_RNG : 0);
406
407 return value;
408}
409
410static int sierra_tiocmset(struct tty_struct *tty, struct file *file,
411 unsigned int set, unsigned int clear)
412{
413 struct usb_serial_port *port = tty->driver_data;
414 struct sierra_port_private *portdata;
415
416 portdata = usb_get_serial_port_data(port);
417
418 if (set & TIOCM_RTS)
419 portdata->rts_state = 1;
420 if (set & TIOCM_DTR)
421 portdata->dtr_state = 1;
422
423 if (clear & TIOCM_RTS)
424 portdata->rts_state = 0;
425 if (clear & TIOCM_DTR)
426 portdata->dtr_state = 0;
427 return sierra_send_setup(port);
428}
429
430static void sierra_release_urb(struct urb *urb)
431{
432 struct usb_serial_port *port;
433 if (urb) {
434 port = urb->context;
435 dev_dbg(&port->dev, "%s: %p\n", __func__, urb);
436 kfree(urb->transfer_buffer);
437 usb_free_urb(urb);
438 }
439}
440
441static void sierra_outdat_callback(struct urb *urb)
442{
443 struct usb_serial_port *port = urb->context;
444 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
445 struct sierra_intf_private *intfdata;
446 int status = urb->status;
447
448 dev_dbg(&port->dev, "%s - port %d\n", __func__, port->number);
449 intfdata = port->serial->private;
450
451
452 kfree(urb->transfer_buffer);
453 usb_autopm_put_interface_async(port->serial->interface);
454 if (status)
455 dev_dbg(&port->dev, "%s - nonzero write bulk status "
456 "received: %d\n", __func__, status);
457
458 spin_lock(&portdata->lock);
459 --portdata->outstanding_urbs;
460 spin_unlock(&portdata->lock);
461 spin_lock(&intfdata->susp_lock);
462 --intfdata->in_flight;
463 spin_unlock(&intfdata->susp_lock);
464
465 usb_serial_port_softint(port);
466}
467
468
469static int sierra_write(struct tty_struct *tty, struct usb_serial_port *port,
470 const unsigned char *buf, int count)
471{
472 struct sierra_port_private *portdata;
473 struct sierra_intf_private *intfdata;
474 struct usb_serial *serial = port->serial;
475 unsigned long flags;
476 unsigned char *buffer;
477 struct urb *urb;
478 size_t writesize = min((size_t)count, (size_t)MAX_TRANSFER);
479 int retval = 0;
480
481
482 if (count == 0)
483 return 0;
484
485 portdata = usb_get_serial_port_data(port);
486 intfdata = serial->private;
487
488 dev_dbg(&port->dev, "%s: write (%zd bytes)\n", __func__, writesize);
489 spin_lock_irqsave(&portdata->lock, flags);
490 dev_dbg(&port->dev, "%s - outstanding_urbs: %d\n", __func__,
491 portdata->outstanding_urbs);
492 if (portdata->outstanding_urbs > portdata->num_out_urbs) {
493 spin_unlock_irqrestore(&portdata->lock, flags);
494 dev_dbg(&port->dev, "%s - write limit hit\n", __func__);
495 return 0;
496 }
497 portdata->outstanding_urbs++;
498 dev_dbg(&port->dev, "%s - 1, outstanding_urbs: %d\n", __func__,
499 portdata->outstanding_urbs);
500 spin_unlock_irqrestore(&portdata->lock, flags);
501
502 retval = usb_autopm_get_interface_async(serial->interface);
503 if (retval < 0) {
504 spin_lock_irqsave(&portdata->lock, flags);
505 portdata->outstanding_urbs--;
506 spin_unlock_irqrestore(&portdata->lock, flags);
507 goto error_simple;
508 }
509
510 buffer = kmalloc(writesize, GFP_ATOMIC);
511 if (!buffer) {
512 dev_err(&port->dev, "out of memory\n");
513 retval = -ENOMEM;
514 goto error_no_buffer;
515 }
516
517 urb = usb_alloc_urb(0, GFP_ATOMIC);
518 if (!urb) {
519 dev_err(&port->dev, "no more free urbs\n");
520 retval = -ENOMEM;
521 goto error_no_urb;
522 }
523
524 memcpy(buffer, buf, writesize);
525
526 usb_serial_debug_data(debug, &port->dev, __func__, writesize, buffer);
527
528 usb_fill_bulk_urb(urb, serial->dev,
529 usb_sndbulkpipe(serial->dev,
530 port->bulk_out_endpointAddress),
531 buffer, writesize, sierra_outdat_callback, port);
532
533
534 urb->transfer_flags |= URB_ZERO_PACKET;
535
536 spin_lock_irqsave(&intfdata->susp_lock, flags);
537
538 if (intfdata->suspended) {
539 usb_anchor_urb(urb, &portdata->delayed);
540 spin_unlock_irqrestore(&intfdata->susp_lock, flags);
541 goto skip_power;
542 } else {
543 usb_anchor_urb(urb, &portdata->active);
544 }
545
546 retval = usb_submit_urb(urb, GFP_ATOMIC);
547 if (retval) {
548 usb_unanchor_urb(urb);
549 spin_unlock_irqrestore(&intfdata->susp_lock, flags);
550 dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed "
551 "with status = %d\n", __func__, retval);
552 goto error;
553 } else {
554 intfdata->in_flight++;
555 spin_unlock_irqrestore(&intfdata->susp_lock, flags);
556 }
557
558skip_power:
559
560
561 usb_free_urb(urb);
562
563 return writesize;
564error:
565 usb_free_urb(urb);
566error_no_urb:
567 kfree(buffer);
568error_no_buffer:
569 spin_lock_irqsave(&portdata->lock, flags);
570 --portdata->outstanding_urbs;
571 dev_dbg(&port->dev, "%s - 2. outstanding_urbs: %d\n", __func__,
572 portdata->outstanding_urbs);
573 spin_unlock_irqrestore(&portdata->lock, flags);
574 usb_autopm_put_interface_async(serial->interface);
575error_simple:
576 return retval;
577}
578
579static void sierra_indat_callback(struct urb *urb)
580{
581 int err;
582 int endpoint;
583 struct usb_serial_port *port;
584 struct tty_struct *tty;
585 unsigned char *data = urb->transfer_buffer;
586 int status = urb->status;
587
588 endpoint = usb_pipeendpoint(urb->pipe);
589 port = urb->context;
590
591 dev_dbg(&port->dev, "%s: %p\n", __func__, urb);
592
593 if (status) {
594 dev_dbg(&port->dev, "%s: nonzero status: %d on"
595 " endpoint %02x\n", __func__, status, endpoint);
596 } else {
597 if (urb->actual_length) {
598 tty = tty_port_tty_get(&port->port);
599 if (tty) {
600 tty_insert_flip_string(tty, data,
601 urb->actual_length);
602 tty_flip_buffer_push(tty);
603
604 tty_kref_put(tty);
605 usb_serial_debug_data(debug, &port->dev,
606 __func__, urb->actual_length, data);
607 }
608 } else {
609 dev_dbg(&port->dev, "%s: empty read urb"
610 " received\n", __func__);
611 }
612 }
613
614
615 if (status != -ESHUTDOWN && status != -EPERM) {
616 usb_mark_last_busy(port->serial->dev);
617 err = usb_submit_urb(urb, GFP_ATOMIC);
618 if (err && err != -EPERM)
619 dev_err(&port->dev, "resubmit read urb failed."
620 "(%d)\n", err);
621 }
622
623 return;
624}
625
626static void sierra_instat_callback(struct urb *urb)
627{
628 int err;
629 int status = urb->status;
630 struct usb_serial_port *port = urb->context;
631 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
632 struct usb_serial *serial = port->serial;
633
634 dev_dbg(&port->dev, "%s: urb %p port %p has data %p\n", __func__,
635 urb, port, portdata);
636
637 if (status == 0) {
638 struct usb_ctrlrequest *req_pkt =
639 (struct usb_ctrlrequest *)urb->transfer_buffer;
640
641 if (!req_pkt) {
642 dev_dbg(&port->dev, "%s: NULL req_pkt\n",
643 __func__);
644 return;
645 }
646 if ((req_pkt->bRequestType == 0xA1) &&
647 (req_pkt->bRequest == 0x20)) {
648 int old_dcd_state;
649 unsigned char signals = *((unsigned char *)
650 urb->transfer_buffer +
651 sizeof(struct usb_ctrlrequest));
652 struct tty_struct *tty;
653
654 dev_dbg(&port->dev, "%s: signal x%x\n", __func__,
655 signals);
656
657 old_dcd_state = portdata->dcd_state;
658 portdata->cts_state = 1;
659 portdata->dcd_state = ((signals & 0x01) ? 1 : 0);
660 portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
661 portdata->ri_state = ((signals & 0x08) ? 1 : 0);
662
663 tty = tty_port_tty_get(&port->port);
664 if (tty && !C_CLOCAL(tty) &&
665 old_dcd_state && !portdata->dcd_state)
666 tty_hangup(tty);
667 tty_kref_put(tty);
668 } else {
669 dev_dbg(&port->dev, "%s: type %x req %x\n",
670 __func__, req_pkt->bRequestType,
671 req_pkt->bRequest);
672 }
673 } else
674 dev_dbg(&port->dev, "%s: error %d\n", __func__, status);
675
676
677 if (status != -ESHUTDOWN && status != -ENOENT) {
678 usb_mark_last_busy(serial->dev);
679 urb->dev = serial->dev;
680 err = usb_submit_urb(urb, GFP_ATOMIC);
681 if (err && err != -EPERM)
682 dev_err(&port->dev, "%s: resubmit intr urb "
683 "failed. (%d)\n", __func__, err);
684 }
685}
686
687static int sierra_write_room(struct tty_struct *tty)
688{
689 struct usb_serial_port *port = tty->driver_data;
690 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
691 unsigned long flags;
692
693 dev_dbg(&port->dev, "%s - port %d\n", __func__, port->number);
694
695
696
697 spin_lock_irqsave(&portdata->lock, flags);
698 if (portdata->outstanding_urbs > (portdata->num_out_urbs * 2) / 3) {
699 spin_unlock_irqrestore(&portdata->lock, flags);
700 dev_dbg(&port->dev, "%s - write limit hit\n", __func__);
701 return 0;
702 }
703 spin_unlock_irqrestore(&portdata->lock, flags);
704
705 return 2048;
706}
707
708static void sierra_stop_rx_urbs(struct usb_serial_port *port)
709{
710 int i;
711 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
712
713 for (i = 0; i < portdata->num_in_urbs; i++)
714 usb_kill_urb(portdata->in_urbs[i]);
715
716 usb_kill_urb(port->interrupt_in_urb);
717}
718
719static int sierra_submit_rx_urbs(struct usb_serial_port *port, gfp_t mem_flags)
720{
721 int ok_cnt;
722 int err = -EINVAL;
723 int i;
724 struct urb *urb;
725 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
726
727 ok_cnt = 0;
728 for (i = 0; i < portdata->num_in_urbs; i++) {
729 urb = portdata->in_urbs[i];
730 if (!urb)
731 continue;
732 err = usb_submit_urb(urb, mem_flags);
733 if (err) {
734 dev_err(&port->dev, "%s: submit urb failed: %d\n",
735 __func__, err);
736 } else {
737 ok_cnt++;
738 }
739 }
740
741 if (ok_cnt && port->interrupt_in_urb) {
742 err = usb_submit_urb(port->interrupt_in_urb, mem_flags);
743 if (err) {
744 dev_err(&port->dev, "%s: submit intr urb failed: %d\n",
745 __func__, err);
746 }
747 }
748
749 if (ok_cnt > 0)
750 return 0;
751 else
752 return err;
753}
754
755static struct urb *sierra_setup_urb(struct usb_serial *serial, int endpoint,
756 int dir, void *ctx, int len,
757 gfp_t mem_flags,
758 usb_complete_t callback)
759{
760 struct urb *urb;
761 u8 *buf;
762
763 if (endpoint == -1)
764 return NULL;
765
766 urb = usb_alloc_urb(0, mem_flags);
767 if (urb == NULL) {
768 dev_dbg(&serial->dev->dev, "%s: alloc for endpoint %d failed\n",
769 __func__, endpoint);
770 return NULL;
771 }
772
773 buf = kmalloc(len, mem_flags);
774 if (buf) {
775
776 usb_fill_bulk_urb(urb, serial->dev,
777 usb_sndbulkpipe(serial->dev, endpoint) | dir,
778 buf, len, callback, ctx);
779
780
781 dev_dbg(&serial->dev->dev, "%s %c u : %p d:%p\n", __func__,
782 dir == USB_DIR_IN ? 'i' : 'o', urb, buf);
783 } else {
784 dev_dbg(&serial->dev->dev, "%s %c u:%p d:%p\n", __func__,
785 dir == USB_DIR_IN ? 'i' : 'o', urb, buf);
786
787 sierra_release_urb(urb);
788 urb = NULL;
789 }
790
791 return urb;
792}
793
794static void sierra_close(struct usb_serial_port *port)
795{
796 int i;
797 struct usb_serial *serial = port->serial;
798 struct sierra_port_private *portdata;
799 struct sierra_intf_private *intfdata = port->serial->private;
800
801
802 dev_dbg(&port->dev, "%s\n", __func__);
803 portdata = usb_get_serial_port_data(port);
804
805 portdata->rts_state = 0;
806 portdata->dtr_state = 0;
807
808 if (serial->dev) {
809 mutex_lock(&serial->disc_mutex);
810 if (!serial->disconnected) {
811 serial->interface->needs_remote_wakeup = 0;
812 usb_autopm_get_interface(serial->interface);
813 sierra_send_setup(port);
814 }
815 mutex_unlock(&serial->disc_mutex);
816 spin_lock_irq(&intfdata->susp_lock);
817 portdata->opened = 0;
818 spin_unlock_irq(&intfdata->susp_lock);
819
820
821
822 sierra_stop_rx_urbs(port);
823
824 for (i = 0; i < portdata->num_in_urbs; i++) {
825 sierra_release_urb(portdata->in_urbs[i]);
826 portdata->in_urbs[i] = NULL;
827 }
828 }
829}
830
831static int sierra_open(struct tty_struct *tty, struct usb_serial_port *port)
832{
833 struct sierra_port_private *portdata;
834 struct usb_serial *serial = port->serial;
835 struct sierra_intf_private *intfdata = serial->private;
836 int i;
837 int err;
838 int endpoint;
839 struct urb *urb;
840
841 portdata = usb_get_serial_port_data(port);
842
843 dev_dbg(&port->dev, "%s\n", __func__);
844
845
846 portdata->rts_state = 1;
847 portdata->dtr_state = 1;
848
849
850 endpoint = port->bulk_in_endpointAddress;
851 for (i = 0; i < portdata->num_in_urbs; i++) {
852 urb = sierra_setup_urb(serial, endpoint, USB_DIR_IN, port,
853 IN_BUFLEN, GFP_KERNEL,
854 sierra_indat_callback);
855 portdata->in_urbs[i] = urb;
856 }
857
858 usb_clear_halt(serial->dev,
859 usb_sndbulkpipe(serial->dev, endpoint) | USB_DIR_IN);
860
861 err = sierra_submit_rx_urbs(port, GFP_KERNEL);
862 if (err) {
863
864 sierra_close(port);
865
866 usb_autopm_put_interface(serial->interface);
867 return err;
868 }
869 sierra_send_setup(port);
870
871 serial->interface->needs_remote_wakeup = 1;
872 spin_lock_irq(&intfdata->susp_lock);
873 portdata->opened = 1;
874 spin_unlock_irq(&intfdata->susp_lock);
875 usb_autopm_put_interface(serial->interface);
876
877 return 0;
878}
879
880
881static void sierra_dtr_rts(struct usb_serial_port *port, int on)
882{
883 struct usb_serial *serial = port->serial;
884 struct sierra_port_private *portdata;
885
886 portdata = usb_get_serial_port_data(port);
887 portdata->rts_state = on;
888 portdata->dtr_state = on;
889
890 if (serial->dev) {
891 mutex_lock(&serial->disc_mutex);
892 if (!serial->disconnected)
893 sierra_send_setup(port);
894 mutex_unlock(&serial->disc_mutex);
895 }
896}
897
898static int sierra_startup(struct usb_serial *serial)
899{
900 struct usb_serial_port *port;
901 struct sierra_port_private *portdata;
902 struct sierra_iface_info *himemoryp = NULL;
903 int i;
904 u8 ifnum;
905
906 dev_dbg(&serial->dev->dev, "%s\n", __func__);
907
908
909 sierra_set_power_state(serial->dev, 0x0000);
910
911
912 if (nmea)
913 sierra_vsc_set_nmea(serial->dev, 1);
914
915
916 for (i = 0; i < serial->num_ports; i++) {
917 port = serial->port[i];
918 portdata = kzalloc(sizeof(*portdata), GFP_KERNEL);
919 if (!portdata) {
920 dev_dbg(&port->dev, "%s: kmalloc for "
921 "sierra_port_private (%d) failed!\n",
922 __func__, i);
923 return -ENOMEM;
924 }
925 spin_lock_init(&portdata->lock);
926 init_usb_anchor(&portdata->active);
927 init_usb_anchor(&portdata->delayed);
928 ifnum = i;
929
930 portdata->num_out_urbs = N_OUT_URB;
931 portdata->num_in_urbs = N_IN_URB;
932
933
934 if (serial->num_ports == 1) {
935
936 ifnum = sierra_calc_interface(serial);
937 himemoryp =
938 (struct sierra_iface_info *)&typeB_interface_list;
939 if (is_himemory(ifnum, himemoryp)) {
940 portdata->num_out_urbs = N_OUT_URB_HM;
941 portdata->num_in_urbs = N_IN_URB_HM;
942 }
943 }
944 else {
945 himemoryp =
946 (struct sierra_iface_info *)&typeA_interface_list;
947 if (is_himemory(i, himemoryp)) {
948 portdata->num_out_urbs = N_OUT_URB_HM;
949 portdata->num_in_urbs = N_IN_URB_HM;
950 }
951 }
952 dev_dbg(&serial->dev->dev,
953 "Memory usage (urbs) interface #%d, in=%d, out=%d\n",
954 ifnum,portdata->num_in_urbs, portdata->num_out_urbs );
955
956 usb_set_serial_port_data(port, portdata);
957 }
958
959 return 0;
960}
961
962static void sierra_release(struct usb_serial *serial)
963{
964 int i;
965 struct usb_serial_port *port;
966 struct sierra_port_private *portdata;
967
968 dev_dbg(&serial->dev->dev, "%s\n", __func__);
969
970 for (i = 0; i < serial->num_ports; ++i) {
971 port = serial->port[i];
972 if (!port)
973 continue;
974 portdata = usb_get_serial_port_data(port);
975 if (!portdata)
976 continue;
977 kfree(portdata);
978 }
979}
980
981#ifdef CONFIG_PM
982static void stop_read_write_urbs(struct usb_serial *serial)
983{
984 int i;
985 struct usb_serial_port *port;
986 struct sierra_port_private *portdata;
987
988
989 for (i = 0; i < serial->num_ports; ++i) {
990 port = serial->port[i];
991 portdata = usb_get_serial_port_data(port);
992 sierra_stop_rx_urbs(port);
993 usb_kill_anchored_urbs(&portdata->active);
994 }
995}
996
997static int sierra_suspend(struct usb_serial *serial, pm_message_t message)
998{
999 struct sierra_intf_private *intfdata;
1000 int b;
1001
1002 if (message.event & PM_EVENT_AUTO) {
1003 intfdata = serial->private;
1004 spin_lock_irq(&intfdata->susp_lock);
1005 b = intfdata->in_flight;
1006
1007 if (b) {
1008 spin_unlock_irq(&intfdata->susp_lock);
1009 return -EBUSY;
1010 } else {
1011 intfdata->suspended = 1;
1012 spin_unlock_irq(&intfdata->susp_lock);
1013 }
1014 }
1015 stop_read_write_urbs(serial);
1016
1017 return 0;
1018}
1019
1020static int sierra_resume(struct usb_serial *serial)
1021{
1022 struct usb_serial_port *port;
1023 struct sierra_intf_private *intfdata = serial->private;
1024 struct sierra_port_private *portdata;
1025 struct urb *urb;
1026 int ec = 0;
1027 int i, err;
1028
1029 spin_lock_irq(&intfdata->susp_lock);
1030 for (i = 0; i < serial->num_ports; i++) {
1031 port = serial->port[i];
1032 portdata = usb_get_serial_port_data(port);
1033
1034 while ((urb = usb_get_from_anchor(&portdata->delayed))) {
1035 usb_anchor_urb(urb, &portdata->active);
1036 intfdata->in_flight++;
1037 err = usb_submit_urb(urb, GFP_ATOMIC);
1038 if (err < 0) {
1039 intfdata->in_flight--;
1040 usb_unanchor_urb(urb);
1041 usb_scuttle_anchored_urbs(&portdata->delayed);
1042 break;
1043 }
1044 }
1045
1046 if (portdata->opened) {
1047 err = sierra_submit_rx_urbs(port, GFP_ATOMIC);
1048 if (err)
1049 ec++;
1050 }
1051 }
1052 intfdata->suspended = 0;
1053 spin_unlock_irq(&intfdata->susp_lock);
1054
1055 return ec ? -EIO : 0;
1056}
1057
1058static int sierra_reset_resume(struct usb_interface *intf)
1059{
1060 struct usb_serial *serial = usb_get_intfdata(intf);
1061 dev_err(&serial->dev->dev, "%s\n", __func__);
1062 return usb_serial_resume(intf);
1063}
1064#else
1065#define sierra_suspend NULL
1066#define sierra_resume NULL
1067#define sierra_reset_resume NULL
1068#endif
1069
1070static struct usb_driver sierra_driver = {
1071 .name = "sierra",
1072 .probe = usb_serial_probe,
1073 .disconnect = usb_serial_disconnect,
1074 .suspend = usb_serial_suspend,
1075 .resume = usb_serial_resume,
1076 .reset_resume = sierra_reset_resume,
1077 .id_table = id_table,
1078 .no_dynamic_id = 1,
1079 .supports_autosuspend = 1,
1080};
1081
1082static struct usb_serial_driver sierra_device = {
1083 .driver = {
1084 .owner = THIS_MODULE,
1085 .name = "sierra",
1086 },
1087 .description = "Sierra USB modem",
1088 .id_table = id_table,
1089 .usb_driver = &sierra_driver,
1090 .calc_num_ports = sierra_calc_num_ports,
1091 .probe = sierra_probe,
1092 .open = sierra_open,
1093 .close = sierra_close,
1094 .dtr_rts = sierra_dtr_rts,
1095 .write = sierra_write,
1096 .write_room = sierra_write_room,
1097 .set_termios = sierra_set_termios,
1098 .tiocmget = sierra_tiocmget,
1099 .tiocmset = sierra_tiocmset,
1100 .attach = sierra_startup,
1101 .release = sierra_release,
1102 .suspend = sierra_suspend,
1103 .resume = sierra_resume,
1104 .read_int_callback = sierra_instat_callback,
1105};
1106
1107
1108static int __init sierra_init(void)
1109{
1110 int retval;
1111 retval = usb_serial_register(&sierra_device);
1112 if (retval)
1113 goto failed_device_register;
1114
1115
1116 retval = usb_register(&sierra_driver);
1117 if (retval)
1118 goto failed_driver_register;
1119
1120 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
1121 DRIVER_DESC "\n");
1122
1123 return 0;
1124
1125failed_driver_register:
1126 usb_serial_deregister(&sierra_device);
1127failed_device_register:
1128 return retval;
1129}
1130
1131static void __exit sierra_exit(void)
1132{
1133 usb_deregister(&sierra_driver);
1134 usb_serial_deregister(&sierra_device);
1135}
1136
1137module_init(sierra_init);
1138module_exit(sierra_exit);
1139
1140MODULE_AUTHOR(DRIVER_AUTHOR);
1141MODULE_DESCRIPTION(DRIVER_DESC);
1142MODULE_VERSION(DRIVER_VERSION);
1143MODULE_LICENSE("GPL");
1144
1145module_param(nmea, bool, S_IRUGO | S_IWUSR);
1146MODULE_PARM_DESC(nmea, "NMEA streaming");
1147
1148module_param(debug, bool, S_IRUGO | S_IWUSR);
1149MODULE_PARM_DESC(debug, "Debug messages");
1150
