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;
61 unsigned int open_ports;
64 static int sierra_set_power_state(struct usb_device *udev, __u16 swiState)
66 return usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
67 SWIMS_USB_REQUEST_SetPower, /* __u8 request */
68 USB_TYPE_VENDOR, /* __u8 request type */
69 swiState, /* __u16 value */
71 NULL, /* void *data */
73 USB_CTRL_SET_TIMEOUT); /* int timeout */
76 static int sierra_vsc_set_nmea(struct usb_device *udev, __u16 enable)
78 return usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
79 SWIMS_USB_REQUEST_SetNmea, /* __u8 request */
80 USB_TYPE_VENDOR, /* __u8 request type */
81 enable, /* __u16 value */
82 0x0000, /* __u16 index */
83 NULL, /* void *data */
85 USB_CTRL_SET_TIMEOUT); /* int timeout */
88 static int sierra_calc_num_ports(struct usb_serial *serial)
91 u8 ifnum, numendpoints;
93 ifnum = serial->interface->cur_altsetting->desc.bInterfaceNumber;
94 numendpoints = serial->interface->cur_altsetting->desc.bNumEndpoints;
96 /* Dummy interface present on some SKUs should be ignored */
99 else if (numendpoints <= 3)
102 num_ports = (numendpoints-1)/2;
106 static int is_blacklisted(const u8 ifnum,
107 const struct sierra_iface_info *blacklist)
113 info = blacklist->ifaceinfo;
115 for (i = 0; i < blacklist->infolen; i++) {
116 if (info[i] == ifnum)
123 static int is_himemory(const u8 ifnum,
124 const struct sierra_iface_info *himemorylist)
130 info = himemorylist->ifaceinfo;
132 for (i=0; i < himemorylist->infolen; i++) {
133 if (info[i] == ifnum)
140 static int sierra_calc_interface(struct usb_serial *serial)
143 struct usb_interface *p_interface;
144 struct usb_host_interface *p_host_interface;
146 /* Get the interface structure pointer from the serial struct */
147 p_interface = serial->interface;
149 /* Get a pointer to the host interface structure */
150 p_host_interface = p_interface->cur_altsetting;
152 /* read the interface descriptor for this active altsetting
153 * to find out the interface number we are on
155 interface = p_host_interface->desc.bInterfaceNumber;
160 static int sierra_probe(struct usb_serial *serial,
161 const struct usb_device_id *id)
164 struct usb_device *udev;
168 ifnum = sierra_calc_interface(serial);
171 * If this interface supports more than 1 alternate
174 if (serial->interface->num_altsetting == 2) {
175 dev_dbg(&udev->dev, "Selecting alt setting for interface %d\n",
177 /* We know the alternate setting is 1 for the MC8785 */
178 usb_set_interface(udev, ifnum, 1);
181 /* ifnum could have changed - by calling usb_set_interface */
182 ifnum = sierra_calc_interface(serial);
184 if (is_blacklisted(ifnum,
185 (struct sierra_iface_info *)id->driver_info)) {
186 dev_dbg(&serial->dev->dev,
187 "Ignoring blacklisted interface #%d\n", ifnum);
194 /* interfaces with higher memory requirements */
195 static const u8 hi_memory_typeA_ifaces[] = { 0, 2 };
196 static const struct sierra_iface_info typeA_interface_list = {
197 .infolen = ARRAY_SIZE(hi_memory_typeA_ifaces),
198 .ifaceinfo = hi_memory_typeA_ifaces,
201 static const u8 hi_memory_typeB_ifaces[] = { 3, 4, 5, 6 };
202 static const struct sierra_iface_info typeB_interface_list = {
203 .infolen = ARRAY_SIZE(hi_memory_typeB_ifaces),
204 .ifaceinfo = hi_memory_typeB_ifaces,
207 /* 'blacklist' of interfaces not served by this driver */
208 static const u8 direct_ip_non_serial_ifaces[] = { 7, 8, 9, 10, 11, 19, 20 };
209 static const struct sierra_iface_info direct_ip_interface_blacklist = {
210 .infolen = ARRAY_SIZE(direct_ip_non_serial_ifaces),
211 .ifaceinfo = direct_ip_non_serial_ifaces,
214 static const struct usb_device_id id_table[] = {
215 { USB_DEVICE(0x0F3D, 0x0112) }, /* Airprime/Sierra PC 5220 */
216 { USB_DEVICE(0x03F0, 0x1B1D) }, /* HP ev2200 a.k.a MC5720 */
217 { USB_DEVICE(0x03F0, 0x211D) }, /* HP ev2210 a.k.a MC5725 */
218 { USB_DEVICE(0x03F0, 0x1E1D) }, /* HP hs2300 a.k.a MC8775 */
220 { USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */
221 { USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */
222 { USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */
223 { USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */
224 { USB_DEVICE(0x1199, 0x0220) }, /* Sierra Wireless MC5725 */
225 { USB_DEVICE(0x1199, 0x0022) }, /* Sierra Wireless EM5725 */
226 { USB_DEVICE(0x1199, 0x0024) }, /* Sierra Wireless MC5727 */
227 { USB_DEVICE(0x1199, 0x0224) }, /* Sierra Wireless MC5727 */
228 { USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */
229 { USB_DEVICE(0x1199, 0x0021) }, /* Sierra Wireless AirCard 597E */
230 { USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */
231 { USB_DEVICE(0x1199, 0x0120) }, /* Sierra Wireless USB Dongle 595U */
232 { USB_DEVICE(0x1199, 0x0301) }, /* Sierra Wireless USB Dongle 250U */
233 /* Sierra Wireless C597 */
234 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0023, 0xFF, 0xFF, 0xFF) },
235 /* Sierra Wireless T598 */
236 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0025, 0xFF, 0xFF, 0xFF) },
237 { USB_DEVICE(0x1199, 0x0026) }, /* Sierra Wireless T11 */
238 { USB_DEVICE(0x1199, 0x0027) }, /* Sierra Wireless AC402 */
239 { USB_DEVICE(0x1199, 0x0028) }, /* Sierra Wireless MC5728 */
240 { USB_DEVICE(0x1199, 0x0029) }, /* Sierra Wireless Device */
242 { USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */
243 { USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */
244 { USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 */
245 { USB_DEVICE(0x1199, 0x6805) }, /* Sierra Wireless MC8765 */
246 { USB_DEVICE(0x1199, 0x6808) }, /* Sierra Wireless MC8755 */
247 { USB_DEVICE(0x1199, 0x6809) }, /* Sierra Wireless MC8765 */
248 { USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 & AC 875U */
249 { USB_DEVICE(0x1199, 0x6813) }, /* Sierra Wireless MC8775 */
250 { USB_DEVICE(0x1199, 0x6815) }, /* Sierra Wireless MC8775 */
251 { USB_DEVICE(0x1199, 0x6816) }, /* Sierra Wireless MC8775 */
252 { USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */
253 { USB_DEVICE(0x1199, 0x6821) }, /* Sierra Wireless AirCard 875U */
254 { USB_DEVICE(0x1199, 0x6822) }, /* Sierra Wireless AirCard 875E */
255 { USB_DEVICE(0x1199, 0x6832) }, /* Sierra Wireless MC8780 */
256 { USB_DEVICE(0x1199, 0x6833) }, /* Sierra Wireless MC8781 */
257 { USB_DEVICE(0x1199, 0x6834) }, /* Sierra Wireless MC8780 */
258 { USB_DEVICE(0x1199, 0x6835) }, /* Sierra Wireless MC8781 */
259 { USB_DEVICE(0x1199, 0x6838) }, /* Sierra Wireless MC8780 */
260 { USB_DEVICE(0x1199, 0x6839) }, /* Sierra Wireless MC8781 */
261 { USB_DEVICE(0x1199, 0x683A) }, /* Sierra Wireless MC8785 */
262 { USB_DEVICE(0x1199, 0x683B) }, /* Sierra Wireless MC8785 Composite */
263 /* Sierra Wireless MC8790, MC8791, MC8792 Composite */
264 { USB_DEVICE(0x1199, 0x683C) },
265 { USB_DEVICE(0x1199, 0x683D) }, /* Sierra Wireless MC8791 Composite */
266 /* Sierra Wireless MC8790, MC8791, MC8792 */
267 { USB_DEVICE(0x1199, 0x683E) },
268 { USB_DEVICE(0x1199, 0x6850) }, /* Sierra Wireless AirCard 880 */
269 { USB_DEVICE(0x1199, 0x6851) }, /* Sierra Wireless AirCard 881 */
270 { USB_DEVICE(0x1199, 0x6852) }, /* Sierra Wireless AirCard 880 E */
271 { USB_DEVICE(0x1199, 0x6853) }, /* Sierra Wireless AirCard 881 E */
272 { USB_DEVICE(0x1199, 0x6855) }, /* Sierra Wireless AirCard 880 U */
273 { USB_DEVICE(0x1199, 0x6856) }, /* Sierra Wireless AirCard 881 U */
274 { USB_DEVICE(0x1199, 0x6859) }, /* Sierra Wireless AirCard 885 E */
275 { USB_DEVICE(0x1199, 0x685A) }, /* Sierra Wireless AirCard 885 E */
276 /* Sierra Wireless C885 */
277 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6880, 0xFF, 0xFF, 0xFF)},
278 /* Sierra Wireless C888, Air Card 501, USB 303, USB 304 */
279 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6890, 0xFF, 0xFF, 0xFF)},
280 /* Sierra Wireless C22/C33 */
281 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6891, 0xFF, 0xFF, 0xFF)},
282 /* Sierra Wireless HSPA Non-Composite Device */
283 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6892, 0xFF, 0xFF, 0xFF)},
284 { USB_DEVICE(0x1199, 0x6893) }, /* Sierra Wireless Device */
285 { USB_DEVICE(0x1199, 0x68A3), /* Sierra Wireless Direct IP modems */
286 .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist
288 /* AT&T Direct IP LTE modems */
289 { USB_DEVICE_AND_INTERFACE_INFO(0x0F3D, 0x68AA, 0xFF, 0xFF, 0xFF),
290 .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist
292 { USB_DEVICE(0x0f3d, 0x68A3), /* Airprime/Sierra Wireless Direct IP modems */
293 .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist
298 MODULE_DEVICE_TABLE(usb, id_table);
301 struct sierra_port_private {
302 spinlock_t lock; /* lock the structure */
303 int outstanding_urbs; /* number of out urbs in flight */
304 struct usb_anchor active;
305 struct usb_anchor delayed;
309 /* Input endpoints and buffers for this port */
310 struct urb *in_urbs[N_IN_URB_HM];
312 /* Settings for the port */
313 int rts_state; /* Handshaking pins (outputs) */
315 int cts_state; /* Handshaking pins (inputs) */
319 unsigned int opened:1;
322 static int sierra_send_setup(struct usb_serial_port *port)
324 struct usb_serial *serial = port->serial;
325 struct sierra_port_private *portdata;
331 portdata = usb_get_serial_port_data(port);
333 if (portdata->dtr_state)
335 if (portdata->rts_state)
338 /* If composite device then properly report interface */
339 if (serial->num_ports == 1) {
340 interface = sierra_calc_interface(serial);
341 /* Control message is sent only to interfaces with
342 * interrupt_in endpoints
344 if (port->interrupt_in_urb) {
345 /* send control message */
350 /* Otherwise the need to do non-composite mapping */
352 if (port->bulk_out_endpointAddress == 2)
354 else if (port->bulk_out_endpointAddress == 4)
356 else if (port->bulk_out_endpointAddress == 5)
364 retval = usb_autopm_get_interface(serial->interface);
368 retval = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
369 0x22, 0x21, val, interface, NULL, 0, USB_CTRL_SET_TIMEOUT);
370 usb_autopm_put_interface(serial->interface);
375 static void sierra_set_termios(struct tty_struct *tty,
376 struct usb_serial_port *port, struct ktermios *old_termios)
378 tty_termios_copy_hw(&tty->termios, old_termios);
379 sierra_send_setup(port);
382 static int sierra_tiocmget(struct tty_struct *tty)
384 struct usb_serial_port *port = tty->driver_data;
386 struct sierra_port_private *portdata;
388 portdata = usb_get_serial_port_data(port);
390 value = ((portdata->rts_state) ? TIOCM_RTS : 0) |
391 ((portdata->dtr_state) ? TIOCM_DTR : 0) |
392 ((portdata->cts_state) ? TIOCM_CTS : 0) |
393 ((portdata->dsr_state) ? TIOCM_DSR : 0) |
394 ((portdata->dcd_state) ? TIOCM_CAR : 0) |
395 ((portdata->ri_state) ? TIOCM_RNG : 0);
400 static int sierra_tiocmset(struct tty_struct *tty,
401 unsigned int set, unsigned int clear)
403 struct usb_serial_port *port = tty->driver_data;
404 struct sierra_port_private *portdata;
406 portdata = usb_get_serial_port_data(port);
409 portdata->rts_state = 1;
411 portdata->dtr_state = 1;
413 if (clear & TIOCM_RTS)
414 portdata->rts_state = 0;
415 if (clear & TIOCM_DTR)
416 portdata->dtr_state = 0;
417 return sierra_send_setup(port);
420 static void sierra_release_urb(struct urb *urb)
423 kfree(urb->transfer_buffer);
428 static void sierra_outdat_callback(struct urb *urb)
430 struct usb_serial_port *port = urb->context;
431 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
432 struct sierra_intf_private *intfdata;
433 int status = urb->status;
435 intfdata = port->serial->private;
437 /* free up the transfer buffer, as usb_free_urb() does not do this */
438 kfree(urb->transfer_buffer);
439 usb_autopm_put_interface_async(port->serial->interface);
441 dev_dbg(&port->dev, "%s - nonzero write bulk status "
442 "received: %d\n", __func__, status);
444 spin_lock(&portdata->lock);
445 --portdata->outstanding_urbs;
446 spin_unlock(&portdata->lock);
447 spin_lock(&intfdata->susp_lock);
448 --intfdata->in_flight;
449 spin_unlock(&intfdata->susp_lock);
451 usb_serial_port_softint(port);
455 static int sierra_write(struct tty_struct *tty, struct usb_serial_port *port,
456 const unsigned char *buf, int count)
458 struct sierra_port_private *portdata;
459 struct sierra_intf_private *intfdata;
460 struct usb_serial *serial = port->serial;
462 unsigned char *buffer;
464 size_t writesize = min((size_t)count, (size_t)MAX_TRANSFER);
467 /* verify that we actually have some data to write */
471 portdata = usb_get_serial_port_data(port);
472 intfdata = serial->private;
474 dev_dbg(&port->dev, "%s: write (%zd bytes)\n", __func__, writesize);
475 spin_lock_irqsave(&portdata->lock, flags);
476 dev_dbg(&port->dev, "%s - outstanding_urbs: %d\n", __func__,
477 portdata->outstanding_urbs);
478 if (portdata->outstanding_urbs > portdata->num_out_urbs) {
479 spin_unlock_irqrestore(&portdata->lock, flags);
480 dev_dbg(&port->dev, "%s - write limit hit\n", __func__);
483 portdata->outstanding_urbs++;
484 dev_dbg(&port->dev, "%s - 1, outstanding_urbs: %d\n", __func__,
485 portdata->outstanding_urbs);
486 spin_unlock_irqrestore(&portdata->lock, flags);
488 retval = usb_autopm_get_interface_async(serial->interface);
490 spin_lock_irqsave(&portdata->lock, flags);
491 portdata->outstanding_urbs--;
492 spin_unlock_irqrestore(&portdata->lock, flags);
496 buffer = kmalloc(writesize, GFP_ATOMIC);
499 goto error_no_buffer;
502 urb = usb_alloc_urb(0, GFP_ATOMIC);
508 memcpy(buffer, buf, writesize);
510 usb_serial_debug_data(&port->dev, __func__, writesize, buffer);
512 usb_fill_bulk_urb(urb, serial->dev,
513 usb_sndbulkpipe(serial->dev,
514 port->bulk_out_endpointAddress),
515 buffer, writesize, sierra_outdat_callback, port);
517 /* Handle the need to send a zero length packet */
518 urb->transfer_flags |= URB_ZERO_PACKET;
520 spin_lock_irqsave(&intfdata->susp_lock, flags);
522 if (intfdata->suspended) {
523 usb_anchor_urb(urb, &portdata->delayed);
524 spin_unlock_irqrestore(&intfdata->susp_lock, flags);
527 usb_anchor_urb(urb, &portdata->active);
529 /* send it down the pipe */
530 retval = usb_submit_urb(urb, GFP_ATOMIC);
532 usb_unanchor_urb(urb);
533 spin_unlock_irqrestore(&intfdata->susp_lock, flags);
534 dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed "
535 "with status = %d\n", __func__, retval);
538 intfdata->in_flight++;
539 spin_unlock_irqrestore(&intfdata->susp_lock, flags);
543 /* we are done with this urb, so let the host driver
544 * really free it when it is finished with it */
553 spin_lock_irqsave(&portdata->lock, flags);
554 --portdata->outstanding_urbs;
555 dev_dbg(&port->dev, "%s - 2. outstanding_urbs: %d\n", __func__,
556 portdata->outstanding_urbs);
557 spin_unlock_irqrestore(&portdata->lock, flags);
558 usb_autopm_put_interface_async(serial->interface);
563 static void sierra_indat_callback(struct urb *urb)
567 struct usb_serial_port *port;
568 unsigned char *data = urb->transfer_buffer;
569 int status = urb->status;
571 endpoint = usb_pipeendpoint(urb->pipe);
575 dev_dbg(&port->dev, "%s: nonzero status: %d on"
576 " endpoint %02x\n", __func__, status, endpoint);
578 if (urb->actual_length) {
579 tty_insert_flip_string(&port->port, data,
581 tty_flip_buffer_push(&port->port);
583 usb_serial_debug_data(&port->dev, __func__,
584 urb->actual_length, data);
586 dev_dbg(&port->dev, "%s: empty read urb"
587 " received\n", __func__);
591 /* Resubmit urb so we continue receiving */
592 if (status != -ESHUTDOWN && status != -EPERM) {
593 usb_mark_last_busy(port->serial->dev);
594 err = usb_submit_urb(urb, GFP_ATOMIC);
595 if (err && err != -EPERM)
596 dev_err(&port->dev, "resubmit read urb failed."
601 static void sierra_instat_callback(struct urb *urb)
604 int status = urb->status;
605 struct usb_serial_port *port = urb->context;
606 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
607 struct usb_serial *serial = port->serial;
609 dev_dbg(&port->dev, "%s: urb %p port %p has data %p\n", __func__,
610 urb, port, portdata);
613 struct usb_ctrlrequest *req_pkt =
614 (struct usb_ctrlrequest *)urb->transfer_buffer;
617 dev_dbg(&port->dev, "%s: NULL req_pkt\n",
621 if ((req_pkt->bRequestType == 0xA1) &&
622 (req_pkt->bRequest == 0x20)) {
624 unsigned char signals = *((unsigned char *)
625 urb->transfer_buffer +
626 sizeof(struct usb_ctrlrequest));
628 dev_dbg(&port->dev, "%s: signal x%x\n", __func__,
631 old_dcd_state = portdata->dcd_state;
632 portdata->cts_state = 1;
633 portdata->dcd_state = ((signals & 0x01) ? 1 : 0);
634 portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
635 portdata->ri_state = ((signals & 0x08) ? 1 : 0);
637 if (old_dcd_state && !portdata->dcd_state)
638 tty_port_tty_hangup(&port->port, true);
640 dev_dbg(&port->dev, "%s: type %x req %x\n",
641 __func__, req_pkt->bRequestType,
645 dev_dbg(&port->dev, "%s: error %d\n", __func__, status);
647 /* Resubmit urb so we continue receiving IRQ data */
648 if (status != -ESHUTDOWN && status != -ENOENT) {
649 usb_mark_last_busy(serial->dev);
650 err = usb_submit_urb(urb, GFP_ATOMIC);
651 if (err && err != -EPERM)
652 dev_err(&port->dev, "%s: resubmit intr urb "
653 "failed. (%d)\n", __func__, err);
657 static int sierra_write_room(struct tty_struct *tty)
659 struct usb_serial_port *port = tty->driver_data;
660 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
663 /* try to give a good number back based on if we have any free urbs at
664 * this point in time */
665 spin_lock_irqsave(&portdata->lock, flags);
666 if (portdata->outstanding_urbs > (portdata->num_out_urbs * 2) / 3) {
667 spin_unlock_irqrestore(&portdata->lock, flags);
668 dev_dbg(&port->dev, "%s - write limit hit\n", __func__);
671 spin_unlock_irqrestore(&portdata->lock, flags);
676 static int sierra_chars_in_buffer(struct tty_struct *tty)
678 struct usb_serial_port *port = tty->driver_data;
679 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
683 /* NOTE: This overcounts somewhat. */
684 spin_lock_irqsave(&portdata->lock, flags);
685 chars = portdata->outstanding_urbs * MAX_TRANSFER;
686 spin_unlock_irqrestore(&portdata->lock, flags);
688 dev_dbg(&port->dev, "%s - %d\n", __func__, chars);
693 static void sierra_stop_rx_urbs(struct usb_serial_port *port)
696 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
698 for (i = 0; i < portdata->num_in_urbs; i++)
699 usb_kill_urb(portdata->in_urbs[i]);
701 usb_kill_urb(port->interrupt_in_urb);
704 static int sierra_submit_rx_urbs(struct usb_serial_port *port, gfp_t mem_flags)
710 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
713 for (i = 0; i < portdata->num_in_urbs; i++) {
714 urb = portdata->in_urbs[i];
717 err = usb_submit_urb(urb, mem_flags);
719 dev_err(&port->dev, "%s: submit urb failed: %d\n",
726 if (ok_cnt && port->interrupt_in_urb) {
727 err = usb_submit_urb(port->interrupt_in_urb, mem_flags);
729 dev_err(&port->dev, "%s: submit intr urb failed: %d\n",
734 if (ok_cnt > 0) /* at least one rx urb submitted */
740 static struct urb *sierra_setup_urb(struct usb_serial *serial, int endpoint,
741 int dir, void *ctx, int len,
743 usb_complete_t callback)
748 urb = usb_alloc_urb(0, mem_flags);
752 buf = kmalloc(len, mem_flags);
754 /* Fill URB using supplied data */
755 usb_fill_bulk_urb(urb, serial->dev,
756 usb_sndbulkpipe(serial->dev, endpoint) | dir,
757 buf, len, callback, ctx);
759 dev_dbg(&serial->dev->dev, "%s %c u : %p d:%p\n", __func__,
760 dir == USB_DIR_IN ? 'i' : 'o', urb, buf);
762 sierra_release_urb(urb);
769 static void sierra_close(struct usb_serial_port *port)
772 struct usb_serial *serial = port->serial;
773 struct sierra_port_private *portdata;
774 struct sierra_intf_private *intfdata = port->serial->private;
777 portdata = usb_get_serial_port_data(port);
779 portdata->rts_state = 0;
780 portdata->dtr_state = 0;
782 mutex_lock(&serial->disc_mutex);
783 if (!serial->disconnected) {
784 /* odd error handling due to pm counters */
785 if (!usb_autopm_get_interface(serial->interface))
786 sierra_send_setup(port);
788 usb_autopm_get_interface_no_resume(serial->interface);
791 mutex_unlock(&serial->disc_mutex);
792 spin_lock_irq(&intfdata->susp_lock);
793 portdata->opened = 0;
794 if (--intfdata->open_ports == 0)
795 serial->interface->needs_remote_wakeup = 0;
796 spin_unlock_irq(&intfdata->susp_lock);
799 urb = usb_get_from_anchor(&portdata->delayed);
802 kfree(urb->transfer_buffer);
804 usb_autopm_put_interface_async(serial->interface);
805 spin_lock(&portdata->lock);
806 portdata->outstanding_urbs--;
807 spin_unlock(&portdata->lock);
810 sierra_stop_rx_urbs(port);
811 usb_kill_anchored_urbs(&portdata->active);
813 for (i = 0; i < portdata->num_in_urbs; i++) {
814 sierra_release_urb(portdata->in_urbs[i]);
815 portdata->in_urbs[i] = NULL;
819 static int sierra_open(struct tty_struct *tty, struct usb_serial_port *port)
821 struct sierra_port_private *portdata;
822 struct usb_serial *serial = port->serial;
823 struct sierra_intf_private *intfdata = serial->private;
829 portdata = usb_get_serial_port_data(port);
831 /* Set some sane defaults */
832 portdata->rts_state = 1;
833 portdata->dtr_state = 1;
836 endpoint = port->bulk_in_endpointAddress;
837 for (i = 0; i < portdata->num_in_urbs; i++) {
838 urb = sierra_setup_urb(serial, endpoint, USB_DIR_IN, port,
839 IN_BUFLEN, GFP_KERNEL,
840 sierra_indat_callback);
841 portdata->in_urbs[i] = urb;
843 /* clear halt condition */
844 usb_clear_halt(serial->dev,
845 usb_sndbulkpipe(serial->dev, endpoint) | USB_DIR_IN);
847 err = sierra_submit_rx_urbs(port, GFP_KERNEL);
851 sierra_send_setup(port);
853 spin_lock_irq(&intfdata->susp_lock);
854 portdata->opened = 1;
855 if (++intfdata->open_ports == 1)
856 serial->interface->needs_remote_wakeup = 1;
857 spin_unlock_irq(&intfdata->susp_lock);
858 usb_autopm_put_interface(serial->interface);
863 sierra_stop_rx_urbs(port);
865 for (i = 0; i < portdata->num_in_urbs; i++) {
866 sierra_release_urb(portdata->in_urbs[i]);
867 portdata->in_urbs[i] = NULL;
874 static void sierra_dtr_rts(struct usb_serial_port *port, int on)
876 struct sierra_port_private *portdata;
878 portdata = usb_get_serial_port_data(port);
879 portdata->rts_state = on;
880 portdata->dtr_state = on;
882 sierra_send_setup(port);
885 static int sierra_startup(struct usb_serial *serial)
887 struct sierra_intf_private *intfdata;
889 intfdata = kzalloc(sizeof(*intfdata), GFP_KERNEL);
893 spin_lock_init(&intfdata->susp_lock);
895 usb_set_serial_data(serial, intfdata);
897 /* Set Device mode to D0 */
898 sierra_set_power_state(serial->dev, 0x0000);
900 /* Check NMEA and set */
902 sierra_vsc_set_nmea(serial->dev, 1);
907 static void sierra_release(struct usb_serial *serial)
909 struct sierra_intf_private *intfdata;
911 intfdata = usb_get_serial_data(serial);
915 static int sierra_port_probe(struct usb_serial_port *port)
917 struct usb_serial *serial = port->serial;
918 struct sierra_port_private *portdata;
919 const struct sierra_iface_info *himemoryp;
922 portdata = kzalloc(sizeof(*portdata), GFP_KERNEL);
926 spin_lock_init(&portdata->lock);
927 init_usb_anchor(&portdata->active);
928 init_usb_anchor(&portdata->delayed);
930 /* Assume low memory requirements */
931 portdata->num_out_urbs = N_OUT_URB;
932 portdata->num_in_urbs = N_IN_URB;
934 /* Determine actual memory requirements */
935 if (serial->num_ports == 1) {
936 /* Get interface number for composite device */
937 ifnum = sierra_calc_interface(serial);
938 himemoryp = &typeB_interface_list;
940 /* This is really the usb-serial port number of the interface
941 * rather than the interface number.
943 ifnum = port->port_number;
944 himemoryp = &typeA_interface_list;
947 if (is_himemory(ifnum, himemoryp)) {
948 portdata->num_out_urbs = N_OUT_URB_HM;
949 portdata->num_in_urbs = N_IN_URB_HM;
953 "Memory usage (urbs) interface #%d, in=%d, out=%d\n",
954 ifnum, portdata->num_in_urbs, portdata->num_out_urbs);
956 usb_set_serial_port_data(port, portdata);
961 static int sierra_port_remove(struct usb_serial_port *port)
963 struct sierra_port_private *portdata;
965 portdata = usb_get_serial_port_data(port);
966 usb_set_serial_port_data(port, NULL);
973 static void stop_read_write_urbs(struct usb_serial *serial)
976 struct usb_serial_port *port;
977 struct sierra_port_private *portdata;
979 /* Stop reading/writing urbs */
980 for (i = 0; i < serial->num_ports; ++i) {
981 port = serial->port[i];
982 portdata = usb_get_serial_port_data(port);
985 sierra_stop_rx_urbs(port);
986 usb_kill_anchored_urbs(&portdata->active);
990 static int sierra_suspend(struct usb_serial *serial, pm_message_t message)
992 struct sierra_intf_private *intfdata;
995 if (PMSG_IS_AUTO(message)) {
996 intfdata = serial->private;
997 spin_lock_irq(&intfdata->susp_lock);
998 b = intfdata->in_flight;
1001 spin_unlock_irq(&intfdata->susp_lock);
1004 intfdata->suspended = 1;
1005 spin_unlock_irq(&intfdata->susp_lock);
1008 stop_read_write_urbs(serial);
1013 static int sierra_resume(struct usb_serial *serial)
1015 struct usb_serial_port *port;
1016 struct sierra_intf_private *intfdata = serial->private;
1017 struct sierra_port_private *portdata;
1022 spin_lock_irq(&intfdata->susp_lock);
1023 for (i = 0; i < serial->num_ports; i++) {
1024 port = serial->port[i];
1025 portdata = usb_get_serial_port_data(port);
1030 while ((urb = usb_get_from_anchor(&portdata->delayed))) {
1031 usb_anchor_urb(urb, &portdata->active);
1032 intfdata->in_flight++;
1033 err = usb_submit_urb(urb, GFP_ATOMIC);
1036 "%s - submit urb failed: %d",
1039 intfdata->in_flight--;
1040 usb_unanchor_urb(urb);
1041 kfree(urb->transfer_buffer);
1043 spin_lock(&portdata->lock);
1044 portdata->outstanding_urbs--;
1045 spin_unlock(&portdata->lock);
1050 if (portdata->opened) {
1051 err = sierra_submit_rx_urbs(port, GFP_ATOMIC);
1056 intfdata->suspended = 0;
1057 spin_unlock_irq(&intfdata->susp_lock);
1059 return ec ? -EIO : 0;
1063 #define sierra_suspend NULL
1064 #define sierra_resume NULL
1067 static struct usb_serial_driver sierra_device = {
1069 .owner = THIS_MODULE,
1072 .description = "Sierra USB modem",
1073 .id_table = id_table,
1074 .calc_num_ports = sierra_calc_num_ports,
1075 .probe = sierra_probe,
1076 .open = sierra_open,
1077 .close = sierra_close,
1078 .dtr_rts = sierra_dtr_rts,
1079 .write = sierra_write,
1080 .write_room = sierra_write_room,
1081 .chars_in_buffer = sierra_chars_in_buffer,
1082 .set_termios = sierra_set_termios,
1083 .tiocmget = sierra_tiocmget,
1084 .tiocmset = sierra_tiocmset,
1085 .attach = sierra_startup,
1086 .release = sierra_release,
1087 .port_probe = sierra_port_probe,
1088 .port_remove = sierra_port_remove,
1089 .suspend = sierra_suspend,
1090 .resume = sierra_resume,
1091 .read_int_callback = sierra_instat_callback,
1094 static struct usb_serial_driver * const serial_drivers[] = {
1095 &sierra_device, NULL
1098 module_usb_serial_driver(serial_drivers, id_table);
1100 MODULE_AUTHOR(DRIVER_AUTHOR);
1101 MODULE_DESCRIPTION(DRIVER_DESC);
1102 MODULE_LICENSE("GPL");
1104 module_param(nmea, bool, S_IRUGO | S_IWUSR);
1105 MODULE_PARM_DESC(nmea, "NMEA streaming");