2 USB Driver for Sierra Wireless
4 Copyright (C) 2006, 2007, 2008 Kevin Lloyd <klloyd@sierrawireless.com>,
6 Copyright (C) 2008, 2009 Elina Pasheva, Matthew Safar, Rory Filer
7 <linux@sierrawireless.com>
9 IMPORTANT DISCLAIMER: This driver is not commercially supported by
10 Sierra Wireless. Use at your own risk.
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.
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>
19 /* Uncomment to log function calls */
22 #define DRIVER_AUTHOR "Kevin Lloyd, Elina Pasheva, Matthew Safar, Rory Filer"
23 #define DRIVER_DESC "USB Driver for Sierra Wireless USB modems"
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>
35 #define SWIMS_USB_REQUEST_SetPower 0x00
36 #define SWIMS_USB_REQUEST_SetNmea 0x07
39 #define N_OUT_URB_HM 64
42 #define IN_BUFLEN 4096
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 */
51 /* Used in interface blacklisting */
52 struct sierra_iface_info {
53 const u32 infolen; /* number of interface numbers on blacklist */
54 const u8 *ifaceinfo; /* pointer to the array holding the numbers */
57 struct sierra_intf_private {
59 unsigned int suspended:1;
63 static int sierra_set_power_state(struct usb_device *udev, __u16 swiState)
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 */
70 NULL, /* void *data */
72 USB_CTRL_SET_TIMEOUT); /* int timeout */
75 static int sierra_vsc_set_nmea(struct usb_device *udev, __u16 enable)
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 */
84 USB_CTRL_SET_TIMEOUT); /* int timeout */
87 static int sierra_calc_num_ports(struct usb_serial *serial)
90 u8 ifnum, numendpoints;
92 ifnum = serial->interface->cur_altsetting->desc.bInterfaceNumber;
93 numendpoints = serial->interface->cur_altsetting->desc.bNumEndpoints;
95 /* Dummy interface present on some SKUs should be ignored */
98 else if (numendpoints <= 3)
101 num_ports = (numendpoints-1)/2;
105 static int is_blacklisted(const u8 ifnum,
106 const struct sierra_iface_info *blacklist)
112 info = blacklist->ifaceinfo;
114 for (i = 0; i < blacklist->infolen; i++) {
115 if (info[i] == ifnum)
122 static int is_himemory(const u8 ifnum,
123 const struct sierra_iface_info *himemorylist)
129 info = himemorylist->ifaceinfo;
131 for (i=0; i < himemorylist->infolen; i++) {
132 if (info[i] == ifnum)
139 static int sierra_calc_interface(struct usb_serial *serial)
142 struct usb_interface *p_interface;
143 struct usb_host_interface *p_host_interface;
145 /* Get the interface structure pointer from the serial struct */
146 p_interface = serial->interface;
148 /* Get a pointer to the host interface structure */
149 p_host_interface = p_interface->cur_altsetting;
151 /* read the interface descriptor for this active altsetting
152 * to find out the interface number we are on
154 interface = p_host_interface->desc.bInterfaceNumber;
159 static int sierra_probe(struct usb_serial *serial,
160 const struct usb_device_id *id)
163 struct usb_device *udev;
167 ifnum = sierra_calc_interface(serial);
170 * If this interface supports more than 1 alternate
173 if (serial->interface->num_altsetting == 2) {
174 dev_dbg(&udev->dev, "Selecting alt setting for interface %d\n",
176 /* We know the alternate setting is 1 for the MC8785 */
177 usb_set_interface(udev, ifnum, 1);
180 /* ifnum could have changed - by calling usb_set_interface */
181 ifnum = sierra_calc_interface(serial);
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);
193 /* interfaces with higher memory requirements */
194 static const u8 hi_memory_typeA_ifaces[] = { 0, 2 };
195 static const struct sierra_iface_info typeA_interface_list = {
196 .infolen = ARRAY_SIZE(hi_memory_typeA_ifaces),
197 .ifaceinfo = hi_memory_typeA_ifaces,
200 static const u8 hi_memory_typeB_ifaces[] = { 3, 4, 5, 6 };
201 static const struct sierra_iface_info typeB_interface_list = {
202 .infolen = ARRAY_SIZE(hi_memory_typeB_ifaces),
203 .ifaceinfo = hi_memory_typeB_ifaces,
206 /* 'blacklist' of interfaces not served by this driver */
207 static const u8 direct_ip_non_serial_ifaces[] = { 7, 8, 9, 10, 11, 19, 20 };
208 static 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,
213 static 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 */
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 */
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
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
291 { USB_DEVICE(0x0f3d, 0x68A3), /* Airprime/Sierra Wireless Direct IP modems */
292 .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist
297 MODULE_DEVICE_TABLE(usb, id_table);
300 struct 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;
308 /* Input endpoints and buffers for this port */
309 struct urb *in_urbs[N_IN_URB_HM];
311 /* Settings for the port */
312 int rts_state; /* Handshaking pins (outputs) */
314 int cts_state; /* Handshaking pins (inputs) */
318 unsigned int opened:1;
321 static int sierra_send_setup(struct usb_serial_port *port)
323 struct usb_serial *serial = port->serial;
324 struct sierra_port_private *portdata;
330 portdata = usb_get_serial_port_data(port);
332 if (portdata->dtr_state)
334 if (portdata->rts_state)
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
343 if (port->interrupt_in_urb) {
344 /* send control message */
349 /* Otherwise the need to do non-composite mapping */
351 if (port->bulk_out_endpointAddress == 2)
353 else if (port->bulk_out_endpointAddress == 4)
355 else if (port->bulk_out_endpointAddress == 5)
363 retval = usb_autopm_get_interface(serial->interface);
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);
374 static void sierra_set_termios(struct tty_struct *tty,
375 struct usb_serial_port *port, struct ktermios *old_termios)
377 tty_termios_copy_hw(&tty->termios, old_termios);
378 sierra_send_setup(port);
381 static int sierra_tiocmget(struct tty_struct *tty)
383 struct usb_serial_port *port = tty->driver_data;
385 struct sierra_port_private *portdata;
387 portdata = usb_get_serial_port_data(port);
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);
399 static int sierra_tiocmset(struct tty_struct *tty,
400 unsigned int set, unsigned int clear)
402 struct usb_serial_port *port = tty->driver_data;
403 struct sierra_port_private *portdata;
405 portdata = usb_get_serial_port_data(port);
408 portdata->rts_state = 1;
410 portdata->dtr_state = 1;
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);
419 static void sierra_release_urb(struct urb *urb)
421 struct usb_serial_port *port;
424 kfree(urb->transfer_buffer);
429 static void sierra_outdat_callback(struct urb *urb)
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;
436 intfdata = port->serial->private;
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);
442 dev_dbg(&port->dev, "%s - nonzero write bulk status "
443 "received: %d\n", __func__, status);
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);
452 usb_serial_port_softint(port);
456 static int sierra_write(struct tty_struct *tty, struct usb_serial_port *port,
457 const unsigned char *buf, int count)
459 struct sierra_port_private *portdata;
460 struct sierra_intf_private *intfdata;
461 struct usb_serial *serial = port->serial;
463 unsigned char *buffer;
465 size_t writesize = min((size_t)count, (size_t)MAX_TRANSFER);
468 /* verify that we actually have some data to write */
472 portdata = usb_get_serial_port_data(port);
473 intfdata = serial->private;
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__);
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);
489 retval = usb_autopm_get_interface_async(serial->interface);
491 spin_lock_irqsave(&portdata->lock, flags);
492 portdata->outstanding_urbs--;
493 spin_unlock_irqrestore(&portdata->lock, flags);
497 buffer = kmalloc(writesize, GFP_ATOMIC);
499 dev_err(&port->dev, "out of memory\n");
501 goto error_no_buffer;
504 urb = usb_alloc_urb(0, GFP_ATOMIC);
506 dev_err(&port->dev, "no more free urbs\n");
511 memcpy(buffer, buf, writesize);
513 usb_serial_debug_data(&port->dev, __func__, writesize, buffer);
515 usb_fill_bulk_urb(urb, serial->dev,
516 usb_sndbulkpipe(serial->dev,
517 port->bulk_out_endpointAddress),
518 buffer, writesize, sierra_outdat_callback, port);
520 /* Handle the need to send a zero length packet */
521 urb->transfer_flags |= URB_ZERO_PACKET;
523 spin_lock_irqsave(&intfdata->susp_lock, flags);
525 if (intfdata->suspended) {
526 usb_anchor_urb(urb, &portdata->delayed);
527 spin_unlock_irqrestore(&intfdata->susp_lock, flags);
530 usb_anchor_urb(urb, &portdata->active);
532 /* send it down the pipe */
533 retval = usb_submit_urb(urb, GFP_ATOMIC);
535 usb_unanchor_urb(urb);
536 spin_unlock_irqrestore(&intfdata->susp_lock, flags);
537 dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed "
538 "with status = %d\n", __func__, retval);
541 intfdata->in_flight++;
542 spin_unlock_irqrestore(&intfdata->susp_lock, flags);
546 /* we are done with this urb, so let the host driver
547 * really free it when it is finished with it */
556 spin_lock_irqsave(&portdata->lock, flags);
557 --portdata->outstanding_urbs;
558 dev_dbg(&port->dev, "%s - 2. outstanding_urbs: %d\n", __func__,
559 portdata->outstanding_urbs);
560 spin_unlock_irqrestore(&portdata->lock, flags);
561 usb_autopm_put_interface_async(serial->interface);
566 static void sierra_indat_callback(struct urb *urb)
570 struct usb_serial_port *port;
571 unsigned char *data = urb->transfer_buffer;
572 int status = urb->status;
574 endpoint = usb_pipeendpoint(urb->pipe);
578 dev_dbg(&port->dev, "%s: nonzero status: %d on"
579 " endpoint %02x\n", __func__, status, endpoint);
581 if (urb->actual_length) {
582 tty_insert_flip_string(&port->port, data,
584 tty_flip_buffer_push(&port->port);
586 usb_serial_debug_data(&port->dev, __func__,
587 urb->actual_length, data);
589 dev_dbg(&port->dev, "%s: empty read urb"
590 " received\n", __func__);
594 /* Resubmit urb so we continue receiving */
595 if (status != -ESHUTDOWN && status != -EPERM) {
596 usb_mark_last_busy(port->serial->dev);
597 err = usb_submit_urb(urb, GFP_ATOMIC);
598 if (err && err != -EPERM)
599 dev_err(&port->dev, "resubmit read urb failed."
604 static void sierra_instat_callback(struct urb *urb)
607 int status = urb->status;
608 struct usb_serial_port *port = urb->context;
609 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
610 struct usb_serial *serial = port->serial;
612 dev_dbg(&port->dev, "%s: urb %p port %p has data %p\n", __func__,
613 urb, port, portdata);
616 struct usb_ctrlrequest *req_pkt =
617 (struct usb_ctrlrequest *)urb->transfer_buffer;
620 dev_dbg(&port->dev, "%s: NULL req_pkt\n",
624 if ((req_pkt->bRequestType == 0xA1) &&
625 (req_pkt->bRequest == 0x20)) {
627 unsigned char signals = *((unsigned char *)
628 urb->transfer_buffer +
629 sizeof(struct usb_ctrlrequest));
631 dev_dbg(&port->dev, "%s: signal x%x\n", __func__,
634 old_dcd_state = portdata->dcd_state;
635 portdata->cts_state = 1;
636 portdata->dcd_state = ((signals & 0x01) ? 1 : 0);
637 portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
638 portdata->ri_state = ((signals & 0x08) ? 1 : 0);
640 if (old_dcd_state && !portdata->dcd_state)
641 tty_port_tty_hangup(&port->port, true);
643 dev_dbg(&port->dev, "%s: type %x req %x\n",
644 __func__, req_pkt->bRequestType,
648 dev_dbg(&port->dev, "%s: error %d\n", __func__, status);
650 /* Resubmit urb so we continue receiving IRQ data */
651 if (status != -ESHUTDOWN && status != -ENOENT) {
652 usb_mark_last_busy(serial->dev);
653 err = usb_submit_urb(urb, GFP_ATOMIC);
654 if (err && err != -EPERM)
655 dev_err(&port->dev, "%s: resubmit intr urb "
656 "failed. (%d)\n", __func__, err);
660 static int sierra_write_room(struct tty_struct *tty)
662 struct usb_serial_port *port = tty->driver_data;
663 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
666 /* try to give a good number back based on if we have any free urbs at
667 * this point in time */
668 spin_lock_irqsave(&portdata->lock, flags);
669 if (portdata->outstanding_urbs > (portdata->num_out_urbs * 2) / 3) {
670 spin_unlock_irqrestore(&portdata->lock, flags);
671 dev_dbg(&port->dev, "%s - write limit hit\n", __func__);
674 spin_unlock_irqrestore(&portdata->lock, flags);
679 static void sierra_stop_rx_urbs(struct usb_serial_port *port)
682 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
684 for (i = 0; i < portdata->num_in_urbs; i++)
685 usb_kill_urb(portdata->in_urbs[i]);
687 usb_kill_urb(port->interrupt_in_urb);
690 static int sierra_submit_rx_urbs(struct usb_serial_port *port, gfp_t mem_flags)
696 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
699 for (i = 0; i < portdata->num_in_urbs; i++) {
700 urb = portdata->in_urbs[i];
703 err = usb_submit_urb(urb, mem_flags);
705 dev_err(&port->dev, "%s: submit urb failed: %d\n",
712 if (ok_cnt && port->interrupt_in_urb) {
713 err = usb_submit_urb(port->interrupt_in_urb, mem_flags);
715 dev_err(&port->dev, "%s: submit intr urb failed: %d\n",
720 if (ok_cnt > 0) /* at least one rx urb submitted */
726 static struct urb *sierra_setup_urb(struct usb_serial *serial, int endpoint,
727 int dir, void *ctx, int len,
729 usb_complete_t callback)
737 urb = usb_alloc_urb(0, mem_flags);
739 dev_dbg(&serial->dev->dev, "%s: alloc for endpoint %d failed\n",
744 buf = kmalloc(len, mem_flags);
746 /* Fill URB using supplied data */
747 usb_fill_bulk_urb(urb, serial->dev,
748 usb_sndbulkpipe(serial->dev, endpoint) | dir,
749 buf, len, callback, ctx);
751 dev_dbg(&serial->dev->dev, "%s %c u : %p d:%p\n", __func__,
752 dir == USB_DIR_IN ? 'i' : 'o', urb, buf);
754 dev_dbg(&serial->dev->dev, "%s %c u:%p d:%p\n", __func__,
755 dir == USB_DIR_IN ? 'i' : 'o', urb, buf);
757 sierra_release_urb(urb);
764 static void sierra_close(struct usb_serial_port *port)
767 struct usb_serial *serial = port->serial;
768 struct sierra_port_private *portdata;
769 struct sierra_intf_private *intfdata = port->serial->private;
771 portdata = usb_get_serial_port_data(port);
773 portdata->rts_state = 0;
774 portdata->dtr_state = 0;
776 mutex_lock(&serial->disc_mutex);
777 if (!serial->disconnected) {
778 serial->interface->needs_remote_wakeup = 0;
779 /* odd error handling due to pm counters */
780 if (!usb_autopm_get_interface(serial->interface))
781 sierra_send_setup(port);
783 usb_autopm_get_interface_no_resume(serial->interface);
786 mutex_unlock(&serial->disc_mutex);
787 spin_lock_irq(&intfdata->susp_lock);
788 portdata->opened = 0;
789 spin_unlock_irq(&intfdata->susp_lock);
791 sierra_stop_rx_urbs(port);
792 for (i = 0; i < portdata->num_in_urbs; i++) {
793 sierra_release_urb(portdata->in_urbs[i]);
794 portdata->in_urbs[i] = NULL;
798 static int sierra_open(struct tty_struct *tty, struct usb_serial_port *port)
800 struct sierra_port_private *portdata;
801 struct usb_serial *serial = port->serial;
802 struct sierra_intf_private *intfdata = serial->private;
808 portdata = usb_get_serial_port_data(port);
810 /* Set some sane defaults */
811 portdata->rts_state = 1;
812 portdata->dtr_state = 1;
815 endpoint = port->bulk_in_endpointAddress;
816 for (i = 0; i < portdata->num_in_urbs; i++) {
817 urb = sierra_setup_urb(serial, endpoint, USB_DIR_IN, port,
818 IN_BUFLEN, GFP_KERNEL,
819 sierra_indat_callback);
820 portdata->in_urbs[i] = urb;
822 /* clear halt condition */
823 usb_clear_halt(serial->dev,
824 usb_sndbulkpipe(serial->dev, endpoint) | USB_DIR_IN);
826 err = sierra_submit_rx_urbs(port, GFP_KERNEL);
828 /* get rid of everything as in close */
830 /* restore balance for autopm */
831 if (!serial->disconnected)
832 usb_autopm_put_interface(serial->interface);
835 sierra_send_setup(port);
837 serial->interface->needs_remote_wakeup = 1;
838 spin_lock_irq(&intfdata->susp_lock);
839 portdata->opened = 1;
840 spin_unlock_irq(&intfdata->susp_lock);
841 usb_autopm_put_interface(serial->interface);
847 static void sierra_dtr_rts(struct usb_serial_port *port, int on)
849 struct sierra_port_private *portdata;
851 portdata = usb_get_serial_port_data(port);
852 portdata->rts_state = on;
853 portdata->dtr_state = on;
855 sierra_send_setup(port);
858 static int sierra_startup(struct usb_serial *serial)
860 struct sierra_intf_private *intfdata;
862 intfdata = kzalloc(sizeof(*intfdata), GFP_KERNEL);
866 spin_lock_init(&intfdata->susp_lock);
868 usb_set_serial_data(serial, intfdata);
870 /* Set Device mode to D0 */
871 sierra_set_power_state(serial->dev, 0x0000);
873 /* Check NMEA and set */
875 sierra_vsc_set_nmea(serial->dev, 1);
880 static void sierra_release(struct usb_serial *serial)
882 struct sierra_intf_private *intfdata;
884 intfdata = usb_get_serial_data(serial);
888 static int sierra_port_probe(struct usb_serial_port *port)
890 struct usb_serial *serial = port->serial;
891 struct sierra_port_private *portdata;
892 const struct sierra_iface_info *himemoryp;
895 portdata = kzalloc(sizeof(*portdata), GFP_KERNEL);
899 spin_lock_init(&portdata->lock);
900 init_usb_anchor(&portdata->active);
901 init_usb_anchor(&portdata->delayed);
903 /* Assume low memory requirements */
904 portdata->num_out_urbs = N_OUT_URB;
905 portdata->num_in_urbs = N_IN_URB;
907 /* Determine actual memory requirements */
908 if (serial->num_ports == 1) {
909 /* Get interface number for composite device */
910 ifnum = sierra_calc_interface(serial);
911 himemoryp = &typeB_interface_list;
913 /* This is really the usb-serial port number of the interface
914 * rather than the interface number.
916 ifnum = port->number - serial->minor;
917 himemoryp = &typeA_interface_list;
920 if (is_himemory(ifnum, himemoryp)) {
921 portdata->num_out_urbs = N_OUT_URB_HM;
922 portdata->num_in_urbs = N_IN_URB_HM;
926 "Memory usage (urbs) interface #%d, in=%d, out=%d\n",
927 ifnum, portdata->num_in_urbs, portdata->num_out_urbs);
929 usb_set_serial_port_data(port, portdata);
934 static int sierra_port_remove(struct usb_serial_port *port)
936 struct sierra_port_private *portdata;
938 portdata = usb_get_serial_port_data(port);
945 static void stop_read_write_urbs(struct usb_serial *serial)
948 struct usb_serial_port *port;
949 struct sierra_port_private *portdata;
951 /* Stop reading/writing urbs */
952 for (i = 0; i < serial->num_ports; ++i) {
953 port = serial->port[i];
954 portdata = usb_get_serial_port_data(port);
955 sierra_stop_rx_urbs(port);
956 usb_kill_anchored_urbs(&portdata->active);
960 static int sierra_suspend(struct usb_serial *serial, pm_message_t message)
962 struct sierra_intf_private *intfdata;
965 if (PMSG_IS_AUTO(message)) {
966 intfdata = serial->private;
967 spin_lock_irq(&intfdata->susp_lock);
968 b = intfdata->in_flight;
971 spin_unlock_irq(&intfdata->susp_lock);
974 intfdata->suspended = 1;
975 spin_unlock_irq(&intfdata->susp_lock);
978 stop_read_write_urbs(serial);
983 static int sierra_resume(struct usb_serial *serial)
985 struct usb_serial_port *port;
986 struct sierra_intf_private *intfdata = serial->private;
987 struct sierra_port_private *portdata;
992 spin_lock_irq(&intfdata->susp_lock);
993 for (i = 0; i < serial->num_ports; i++) {
994 port = serial->port[i];
995 portdata = usb_get_serial_port_data(port);
997 while ((urb = usb_get_from_anchor(&portdata->delayed))) {
998 usb_anchor_urb(urb, &portdata->active);
999 intfdata->in_flight++;
1000 err = usb_submit_urb(urb, GFP_ATOMIC);
1002 intfdata->in_flight--;
1003 usb_unanchor_urb(urb);
1004 usb_scuttle_anchored_urbs(&portdata->delayed);
1009 if (portdata->opened) {
1010 err = sierra_submit_rx_urbs(port, GFP_ATOMIC);
1015 intfdata->suspended = 0;
1016 spin_unlock_irq(&intfdata->susp_lock);
1018 return ec ? -EIO : 0;
1022 #define sierra_suspend NULL
1023 #define sierra_resume NULL
1026 static struct usb_serial_driver sierra_device = {
1028 .owner = THIS_MODULE,
1031 .description = "Sierra USB modem",
1032 .id_table = id_table,
1033 .calc_num_ports = sierra_calc_num_ports,
1034 .probe = sierra_probe,
1035 .open = sierra_open,
1036 .close = sierra_close,
1037 .dtr_rts = sierra_dtr_rts,
1038 .write = sierra_write,
1039 .write_room = sierra_write_room,
1040 .set_termios = sierra_set_termios,
1041 .tiocmget = sierra_tiocmget,
1042 .tiocmset = sierra_tiocmset,
1043 .attach = sierra_startup,
1044 .release = sierra_release,
1045 .port_probe = sierra_port_probe,
1046 .port_remove = sierra_port_remove,
1047 .suspend = sierra_suspend,
1048 .resume = sierra_resume,
1049 .read_int_callback = sierra_instat_callback,
1052 static struct usb_serial_driver * const serial_drivers[] = {
1053 &sierra_device, NULL
1056 module_usb_serial_driver(serial_drivers, id_table);
1058 MODULE_AUTHOR(DRIVER_AUTHOR);
1059 MODULE_DESCRIPTION(DRIVER_DESC);
1060 MODULE_LICENSE("GPL");
1062 module_param(nmea, bool, S_IRUGO | S_IWUSR);
1063 MODULE_PARM_DESC(nmea, "NMEA streaming");