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 */
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"
25 #include <linux/kernel.h>
26 #include <linux/jiffies.h>
27 #include <linux/errno.h>
28 #include <linux/tty.h>
29 #include <linux/tty_flip.h>
30 #include <linux/module.h>
31 #include <linux/usb.h>
32 #include <linux/usb/serial.h>
34 #define SWIMS_USB_REQUEST_SetPower 0x00
35 #define SWIMS_USB_REQUEST_SetNmea 0x07
38 #define N_OUT_URB_HM 64
41 #define IN_BUFLEN 4096
43 #define MAX_TRANSFER (PAGE_SIZE - 512)
44 /* MAX_TRANSFER is chosen so that the VM is not stressed by
45 allocations > PAGE_SIZE and the number of packets in a page
46 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)
66 dev_dbg(&udev->dev, "%s\n", __func__);
67 result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
68 SWIMS_USB_REQUEST_SetPower, /* __u8 request */
69 USB_TYPE_VENDOR, /* __u8 request type */
70 swiState, /* __u16 value */
72 NULL, /* void *data */
74 USB_CTRL_SET_TIMEOUT); /* int timeout */
78 static int sierra_vsc_set_nmea(struct usb_device *udev, __u16 enable)
81 dev_dbg(&udev->dev, "%s\n", __func__);
82 result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
83 SWIMS_USB_REQUEST_SetNmea, /* __u8 request */
84 USB_TYPE_VENDOR, /* __u8 request type */
85 enable, /* __u16 value */
86 0x0000, /* __u16 index */
87 NULL, /* void *data */
89 USB_CTRL_SET_TIMEOUT); /* int timeout */
93 static int sierra_calc_num_ports(struct usb_serial *serial)
96 u8 ifnum, numendpoints;
98 dev_dbg(&serial->dev->dev, "%s\n", __func__);
100 ifnum = serial->interface->cur_altsetting->desc.bInterfaceNumber;
101 numendpoints = serial->interface->cur_altsetting->desc.bNumEndpoints;
103 /* Dummy interface present on some SKUs should be ignored */
106 else if (numendpoints <= 3)
109 num_ports = (numendpoints-1)/2;
113 static int is_blacklisted(const u8 ifnum,
114 const struct sierra_iface_info *blacklist)
120 info = blacklist->ifaceinfo;
122 for (i = 0; i < blacklist->infolen; i++) {
123 if (info[i] == ifnum)
130 static int is_himemory(const u8 ifnum,
131 const struct sierra_iface_info *himemorylist)
137 info = himemorylist->ifaceinfo;
139 for (i=0; i < himemorylist->infolen; i++) {
140 if (info[i] == ifnum)
147 static int sierra_calc_interface(struct usb_serial *serial)
150 struct usb_interface *p_interface;
151 struct usb_host_interface *p_host_interface;
152 dev_dbg(&serial->dev->dev, "%s\n", __func__);
154 /* Get the interface structure pointer from the serial struct */
155 p_interface = serial->interface;
157 /* Get a pointer to the host interface structure */
158 p_host_interface = p_interface->cur_altsetting;
160 /* read the interface descriptor for this active altsetting
161 * to find out the interface number we are on
163 interface = p_host_interface->desc.bInterfaceNumber;
168 static int sierra_probe(struct usb_serial *serial,
169 const struct usb_device_id *id)
172 struct usb_device *udev;
173 struct sierra_intf_private *data;
177 dev_dbg(&udev->dev, "%s\n", __func__);
179 ifnum = sierra_calc_interface(serial);
181 * If this interface supports more than 1 alternate
184 if (serial->interface->num_altsetting == 2) {
185 dev_dbg(&udev->dev, "Selecting alt setting for interface %d\n",
187 /* We know the alternate setting is 1 for the MC8785 */
188 usb_set_interface(udev, ifnum, 1);
191 /* ifnum could have changed - by calling usb_set_interface */
192 ifnum = sierra_calc_interface(serial);
194 if (is_blacklisted(ifnum,
195 (struct sierra_iface_info *)id->driver_info)) {
196 dev_dbg(&serial->dev->dev,
197 "Ignoring blacklisted interface #%d\n", ifnum);
201 data = serial->private = kzalloc(sizeof(struct sierra_intf_private), GFP_KERNEL);
204 spin_lock_init(&data->susp_lock);
209 /* interfaces with higher memory requirements */
210 static const u8 hi_memory_typeA_ifaces[] = { 0, 2 };
211 static const struct sierra_iface_info typeA_interface_list = {
212 .infolen = ARRAY_SIZE(hi_memory_typeA_ifaces),
213 .ifaceinfo = hi_memory_typeA_ifaces,
216 static const u8 hi_memory_typeB_ifaces[] = { 3, 4, 5, 6 };
217 static const struct sierra_iface_info typeB_interface_list = {
218 .infolen = ARRAY_SIZE(hi_memory_typeB_ifaces),
219 .ifaceinfo = hi_memory_typeB_ifaces,
222 /* 'blacklist' of interfaces not served by this driver */
223 static const u8 direct_ip_non_serial_ifaces[] = { 7, 8, 9, 10, 11 };
224 static const struct sierra_iface_info direct_ip_interface_blacklist = {
225 .infolen = ARRAY_SIZE(direct_ip_non_serial_ifaces),
226 .ifaceinfo = direct_ip_non_serial_ifaces,
229 static const struct usb_device_id id_table[] = {
230 { USB_DEVICE(0x0F3D, 0x0112) }, /* Airprime/Sierra PC 5220 */
231 { USB_DEVICE(0x03F0, 0x1B1D) }, /* HP ev2200 a.k.a MC5720 */
232 { USB_DEVICE(0x03F0, 0x1E1D) }, /* HP hs2300 a.k.a MC8775 */
234 { USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */
235 { USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */
236 { USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */
237 { USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */
238 { USB_DEVICE(0x1199, 0x0220) }, /* Sierra Wireless MC5725 */
239 { USB_DEVICE(0x1199, 0x0022) }, /* Sierra Wireless EM5725 */
240 { USB_DEVICE(0x1199, 0x0024) }, /* Sierra Wireless MC5727 */
241 { USB_DEVICE(0x1199, 0x0224) }, /* Sierra Wireless MC5727 */
242 { USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */
243 { USB_DEVICE(0x1199, 0x0021) }, /* Sierra Wireless AirCard 597E */
244 { USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */
245 { USB_DEVICE(0x1199, 0x0120) }, /* Sierra Wireless USB Dongle 595U */
246 /* Sierra Wireless C597 */
247 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0023, 0xFF, 0xFF, 0xFF) },
248 /* Sierra Wireless T598 */
249 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0025, 0xFF, 0xFF, 0xFF) },
250 { USB_DEVICE(0x1199, 0x0026) }, /* Sierra Wireless T11 */
251 { USB_DEVICE(0x1199, 0x0027) }, /* Sierra Wireless AC402 */
252 { USB_DEVICE(0x1199, 0x0028) }, /* Sierra Wireless MC5728 */
253 { USB_DEVICE(0x1199, 0x0029) }, /* Sierra Wireless Device */
255 { USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */
256 { USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */
257 { USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 */
258 { USB_DEVICE(0x1199, 0x6805) }, /* Sierra Wireless MC8765 */
259 { USB_DEVICE(0x1199, 0x6808) }, /* Sierra Wireless MC8755 */
260 { USB_DEVICE(0x1199, 0x6809) }, /* Sierra Wireless MC8765 */
261 { USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 & AC 875U */
262 { USB_DEVICE(0x1199, 0x6813) }, /* Sierra Wireless MC8775 */
263 { USB_DEVICE(0x1199, 0x6815) }, /* Sierra Wireless MC8775 */
264 { USB_DEVICE(0x1199, 0x6816) }, /* Sierra Wireless MC8775 */
265 { USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */
266 { USB_DEVICE(0x1199, 0x6821) }, /* Sierra Wireless AirCard 875U */
267 { USB_DEVICE(0x1199, 0x6822) }, /* Sierra Wireless AirCard 875E */
268 { USB_DEVICE(0x1199, 0x6832) }, /* Sierra Wireless MC8780 */
269 { USB_DEVICE(0x1199, 0x6833) }, /* Sierra Wireless MC8781 */
270 { USB_DEVICE(0x1199, 0x6834) }, /* Sierra Wireless MC8780 */
271 { USB_DEVICE(0x1199, 0x6835) }, /* Sierra Wireless MC8781 */
272 { USB_DEVICE(0x1199, 0x6838) }, /* Sierra Wireless MC8780 */
273 { USB_DEVICE(0x1199, 0x6839) }, /* Sierra Wireless MC8781 */
274 { USB_DEVICE(0x1199, 0x683A) }, /* Sierra Wireless MC8785 */
275 { USB_DEVICE(0x1199, 0x683B) }, /* Sierra Wireless MC8785 Composite */
276 /* Sierra Wireless MC8790, MC8791, MC8792 Composite */
277 { USB_DEVICE(0x1199, 0x683C) },
278 { USB_DEVICE(0x1199, 0x683D) }, /* Sierra Wireless MC8791 Composite */
279 /* Sierra Wireless MC8790, MC8791, MC8792 */
280 { USB_DEVICE(0x1199, 0x683E) },
281 { USB_DEVICE(0x1199, 0x6850) }, /* Sierra Wireless AirCard 880 */
282 { USB_DEVICE(0x1199, 0x6851) }, /* Sierra Wireless AirCard 881 */
283 { USB_DEVICE(0x1199, 0x6852) }, /* Sierra Wireless AirCard 880 E */
284 { USB_DEVICE(0x1199, 0x6853) }, /* Sierra Wireless AirCard 881 E */
285 { USB_DEVICE(0x1199, 0x6855) }, /* Sierra Wireless AirCard 880 U */
286 { USB_DEVICE(0x1199, 0x6856) }, /* Sierra Wireless AirCard 881 U */
287 { USB_DEVICE(0x1199, 0x6859) }, /* Sierra Wireless AirCard 885 E */
288 { USB_DEVICE(0x1199, 0x685A) }, /* Sierra Wireless AirCard 885 E */
289 /* Sierra Wireless C885 */
290 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6880, 0xFF, 0xFF, 0xFF)},
291 /* Sierra Wireless C888, Air Card 501, USB 303, USB 304 */
292 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6890, 0xFF, 0xFF, 0xFF)},
293 /* Sierra Wireless C22/C33 */
294 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6891, 0xFF, 0xFF, 0xFF)},
295 /* Sierra Wireless HSPA Non-Composite Device */
296 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6892, 0xFF, 0xFF, 0xFF)},
297 { USB_DEVICE(0x1199, 0x6893) }, /* Sierra Wireless Device */
298 { USB_DEVICE(0x1199, 0x68A3), /* Sierra Wireless Direct IP modems */
299 .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist
301 { USB_DEVICE(0x413C, 0x08133) }, /* Dell Computer Corp. Wireless 5720 VZW Mobile Broadband (EVDO Rev-A) Minicard GPS Port */
305 MODULE_DEVICE_TABLE(usb, id_table);
308 struct sierra_port_private {
309 spinlock_t lock; /* lock the structure */
310 int outstanding_urbs; /* number of out urbs in flight */
311 struct usb_anchor active;
312 struct usb_anchor delayed;
316 /* Input endpoints and buffers for this port */
317 struct urb *in_urbs[N_IN_URB_HM];
319 /* Settings for the port */
320 int rts_state; /* Handshaking pins (outputs) */
322 int cts_state; /* Handshaking pins (inputs) */
326 unsigned int opened:1;
329 static int sierra_send_setup(struct usb_serial_port *port)
331 struct usb_serial *serial = port->serial;
332 struct sierra_port_private *portdata;
338 dev_dbg(&port->dev, "%s\n", __func__);
340 portdata = usb_get_serial_port_data(port);
342 if (portdata->dtr_state)
344 if (portdata->rts_state)
347 /* If composite device then properly report interface */
348 if (serial->num_ports == 1) {
349 interface = sierra_calc_interface(serial);
350 /* Control message is sent only to interfaces with
351 * interrupt_in endpoints
353 if (port->interrupt_in_urb) {
354 /* send control message */
359 /* Otherwise the need to do non-composite mapping */
361 if (port->bulk_out_endpointAddress == 2)
363 else if (port->bulk_out_endpointAddress == 4)
365 else if (port->bulk_out_endpointAddress == 5)
373 usb_autopm_get_interface(serial->interface);
374 retval = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
375 0x22, 0x21, val, interface, NULL, 0, USB_CTRL_SET_TIMEOUT);
376 usb_autopm_put_interface(serial->interface);
381 static void sierra_set_termios(struct tty_struct *tty,
382 struct usb_serial_port *port, struct ktermios *old_termios)
384 dev_dbg(&port->dev, "%s\n", __func__);
385 tty_termios_copy_hw(tty->termios, old_termios);
386 sierra_send_setup(port);
389 static int sierra_tiocmget(struct tty_struct *tty, struct file *file)
391 struct usb_serial_port *port = tty->driver_data;
393 struct sierra_port_private *portdata;
395 dev_dbg(&port->dev, "%s\n", __func__);
396 portdata = usb_get_serial_port_data(port);
398 value = ((portdata->rts_state) ? TIOCM_RTS : 0) |
399 ((portdata->dtr_state) ? TIOCM_DTR : 0) |
400 ((portdata->cts_state) ? TIOCM_CTS : 0) |
401 ((portdata->dsr_state) ? TIOCM_DSR : 0) |
402 ((portdata->dcd_state) ? TIOCM_CAR : 0) |
403 ((portdata->ri_state) ? TIOCM_RNG : 0);
408 static int sierra_tiocmset(struct tty_struct *tty, struct file *file,
409 unsigned int set, unsigned int clear)
411 struct usb_serial_port *port = tty->driver_data;
412 struct sierra_port_private *portdata;
414 portdata = usb_get_serial_port_data(port);
417 portdata->rts_state = 1;
419 portdata->dtr_state = 1;
421 if (clear & TIOCM_RTS)
422 portdata->rts_state = 0;
423 if (clear & TIOCM_DTR)
424 portdata->dtr_state = 0;
425 return sierra_send_setup(port);
428 static void sierra_release_urb(struct urb *urb)
430 struct usb_serial_port *port;
433 dev_dbg(&port->dev, "%s: %p\n", __func__, urb);
434 kfree(urb->transfer_buffer);
439 static void sierra_outdat_callback(struct urb *urb)
441 struct usb_serial_port *port = urb->context;
442 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
443 struct sierra_intf_private *intfdata;
444 int status = urb->status;
446 dev_dbg(&port->dev, "%s - port %d\n", __func__, port->number);
447 intfdata = port->serial->private;
449 /* free up the transfer buffer, as usb_free_urb() does not do this */
450 kfree(urb->transfer_buffer);
451 usb_autopm_put_interface_async(port->serial->interface);
453 dev_dbg(&port->dev, "%s - nonzero write bulk status "
454 "received: %d\n", __func__, status);
456 spin_lock(&portdata->lock);
457 --portdata->outstanding_urbs;
458 spin_unlock(&portdata->lock);
459 spin_lock(&intfdata->susp_lock);
460 --intfdata->in_flight;
461 spin_unlock(&intfdata->susp_lock);
463 usb_serial_port_softint(port);
467 static int sierra_write(struct tty_struct *tty, struct usb_serial_port *port,
468 const unsigned char *buf, int count)
470 struct sierra_port_private *portdata;
471 struct sierra_intf_private *intfdata;
472 struct usb_serial *serial = port->serial;
474 unsigned char *buffer;
476 size_t writesize = min((size_t)count, (size_t)MAX_TRANSFER);
479 /* verify that we actually have some data to write */
483 portdata = usb_get_serial_port_data(port);
484 intfdata = serial->private;
486 dev_dbg(&port->dev, "%s: write (%zd bytes)\n", __func__, writesize);
487 spin_lock_irqsave(&portdata->lock, flags);
488 dev_dbg(&port->dev, "%s - outstanding_urbs: %d\n", __func__,
489 portdata->outstanding_urbs);
490 if (portdata->outstanding_urbs > portdata->num_out_urbs) {
491 spin_unlock_irqrestore(&portdata->lock, flags);
492 dev_dbg(&port->dev, "%s - write limit hit\n", __func__);
495 portdata->outstanding_urbs++;
496 dev_dbg(&port->dev, "%s - 1, outstanding_urbs: %d\n", __func__,
497 portdata->outstanding_urbs);
498 spin_unlock_irqrestore(&portdata->lock, flags);
500 retval = usb_autopm_get_interface_async(serial->interface);
502 spin_lock_irqsave(&portdata->lock, flags);
503 portdata->outstanding_urbs--;
504 spin_unlock_irqrestore(&portdata->lock, flags);
508 buffer = kmalloc(writesize, GFP_ATOMIC);
510 dev_err(&port->dev, "out of memory\n");
512 goto error_no_buffer;
515 urb = usb_alloc_urb(0, GFP_ATOMIC);
517 dev_err(&port->dev, "no more free urbs\n");
522 memcpy(buffer, buf, writesize);
524 usb_serial_debug_data(debug, &port->dev, __func__, writesize, buffer);
526 usb_fill_bulk_urb(urb, serial->dev,
527 usb_sndbulkpipe(serial->dev,
528 port->bulk_out_endpointAddress),
529 buffer, writesize, sierra_outdat_callback, port);
531 /* Handle the need to send a zero length packet */
532 urb->transfer_flags |= URB_ZERO_PACKET;
534 spin_lock_irqsave(&intfdata->susp_lock, flags);
536 if (intfdata->suspended) {
537 usb_anchor_urb(urb, &portdata->delayed);
538 spin_unlock_irqrestore(&intfdata->susp_lock, flags);
541 usb_anchor_urb(urb, &portdata->active);
543 /* send it down the pipe */
544 retval = usb_submit_urb(urb, GFP_ATOMIC);
546 usb_unanchor_urb(urb);
547 spin_unlock_irqrestore(&intfdata->susp_lock, flags);
548 dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed "
549 "with status = %d\n", __func__, retval);
552 intfdata->in_flight++;
553 spin_unlock_irqrestore(&intfdata->susp_lock, flags);
557 /* we are done with this urb, so let the host driver
558 * really free it when it is finished with it */
567 spin_lock_irqsave(&portdata->lock, flags);
568 --portdata->outstanding_urbs;
569 dev_dbg(&port->dev, "%s - 2. outstanding_urbs: %d\n", __func__,
570 portdata->outstanding_urbs);
571 spin_unlock_irqrestore(&portdata->lock, flags);
572 usb_autopm_put_interface_async(serial->interface);
577 static void sierra_indat_callback(struct urb *urb)
581 struct usb_serial_port *port;
582 struct tty_struct *tty;
583 unsigned char *data = urb->transfer_buffer;
584 int status = urb->status;
586 endpoint = usb_pipeendpoint(urb->pipe);
589 dev_dbg(&port->dev, "%s: %p\n", __func__, urb);
592 dev_dbg(&port->dev, "%s: nonzero status: %d on"
593 " endpoint %02x\n", __func__, status, endpoint);
595 if (urb->actual_length) {
596 tty = tty_port_tty_get(&port->port);
598 tty_insert_flip_string(tty, data,
600 tty_flip_buffer_push(tty);
603 usb_serial_debug_data(debug, &port->dev,
604 __func__, urb->actual_length, data);
607 dev_dbg(&port->dev, "%s: empty read urb"
608 " received\n", __func__);
612 /* Resubmit urb so we continue receiving */
613 if (status != -ESHUTDOWN && status != -EPERM) {
614 usb_mark_last_busy(port->serial->dev);
615 err = usb_submit_urb(urb, GFP_ATOMIC);
616 if (err && err != -EPERM)
617 dev_err(&port->dev, "resubmit read urb failed."
624 static void sierra_instat_callback(struct urb *urb)
627 int status = urb->status;
628 struct usb_serial_port *port = urb->context;
629 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
630 struct usb_serial *serial = port->serial;
632 dev_dbg(&port->dev, "%s: urb %p port %p has data %p\n", __func__,
633 urb, port, portdata);
636 struct usb_ctrlrequest *req_pkt =
637 (struct usb_ctrlrequest *)urb->transfer_buffer;
640 dev_dbg(&port->dev, "%s: NULL req_pkt\n",
644 if ((req_pkt->bRequestType == 0xA1) &&
645 (req_pkt->bRequest == 0x20)) {
647 unsigned char signals = *((unsigned char *)
648 urb->transfer_buffer +
649 sizeof(struct usb_ctrlrequest));
650 struct tty_struct *tty;
652 dev_dbg(&port->dev, "%s: signal x%x\n", __func__,
655 old_dcd_state = portdata->dcd_state;
656 portdata->cts_state = 1;
657 portdata->dcd_state = ((signals & 0x01) ? 1 : 0);
658 portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
659 portdata->ri_state = ((signals & 0x08) ? 1 : 0);
661 tty = tty_port_tty_get(&port->port);
662 if (tty && !C_CLOCAL(tty) &&
663 old_dcd_state && !portdata->dcd_state)
667 dev_dbg(&port->dev, "%s: type %x req %x\n",
668 __func__, req_pkt->bRequestType,
672 dev_dbg(&port->dev, "%s: error %d\n", __func__, status);
674 /* Resubmit urb so we continue receiving IRQ data */
675 if (status != -ESHUTDOWN && status != -ENOENT) {
676 usb_mark_last_busy(serial->dev);
677 urb->dev = serial->dev;
678 err = usb_submit_urb(urb, GFP_ATOMIC);
679 if (err && err != -EPERM)
680 dev_err(&port->dev, "%s: resubmit intr urb "
681 "failed. (%d)\n", __func__, err);
685 static int sierra_write_room(struct tty_struct *tty)
687 struct usb_serial_port *port = tty->driver_data;
688 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
691 dev_dbg(&port->dev, "%s - port %d\n", __func__, port->number);
693 /* try to give a good number back based on if we have any free urbs at
694 * this point in time */
695 spin_lock_irqsave(&portdata->lock, flags);
696 if (portdata->outstanding_urbs > (portdata->num_out_urbs * 2) / 3) {
697 spin_unlock_irqrestore(&portdata->lock, flags);
698 dev_dbg(&port->dev, "%s - write limit hit\n", __func__);
701 spin_unlock_irqrestore(&portdata->lock, flags);
706 static void sierra_stop_rx_urbs(struct usb_serial_port *port)
709 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
711 for (i = 0; i < portdata->num_in_urbs; i++)
712 usb_kill_urb(portdata->in_urbs[i]);
714 usb_kill_urb(port->interrupt_in_urb);
717 static int sierra_submit_rx_urbs(struct usb_serial_port *port, gfp_t mem_flags)
723 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
726 for (i = 0; i < portdata->num_in_urbs; i++) {
727 urb = portdata->in_urbs[i];
730 err = usb_submit_urb(urb, mem_flags);
732 dev_err(&port->dev, "%s: submit urb failed: %d\n",
739 if (ok_cnt && port->interrupt_in_urb) {
740 err = usb_submit_urb(port->interrupt_in_urb, mem_flags);
742 dev_err(&port->dev, "%s: submit intr urb failed: %d\n",
747 if (ok_cnt > 0) /* at least one rx urb submitted */
753 static struct urb *sierra_setup_urb(struct usb_serial *serial, int endpoint,
754 int dir, void *ctx, int len,
756 usb_complete_t callback)
764 urb = usb_alloc_urb(0, mem_flags);
766 dev_dbg(&serial->dev->dev, "%s: alloc for endpoint %d failed\n",
771 buf = kmalloc(len, mem_flags);
773 /* Fill URB using supplied data */
774 usb_fill_bulk_urb(urb, serial->dev,
775 usb_sndbulkpipe(serial->dev, endpoint) | dir,
776 buf, len, callback, ctx);
779 dev_dbg(&serial->dev->dev, "%s %c u : %p d:%p\n", __func__,
780 dir == USB_DIR_IN ? 'i' : 'o', urb, buf);
782 dev_dbg(&serial->dev->dev, "%s %c u:%p d:%p\n", __func__,
783 dir == USB_DIR_IN ? 'i' : 'o', urb, buf);
785 sierra_release_urb(urb);
792 static void sierra_close(struct usb_serial_port *port)
795 struct usb_serial *serial = port->serial;
796 struct sierra_port_private *portdata;
797 struct sierra_intf_private *intfdata = port->serial->private;
800 dev_dbg(&port->dev, "%s\n", __func__);
801 portdata = usb_get_serial_port_data(port);
803 portdata->rts_state = 0;
804 portdata->dtr_state = 0;
807 mutex_lock(&serial->disc_mutex);
808 if (!serial->disconnected) {
809 serial->interface->needs_remote_wakeup = 0;
810 usb_autopm_get_interface(serial->interface);
811 sierra_send_setup(port);
813 mutex_unlock(&serial->disc_mutex);
814 spin_lock_irq(&intfdata->susp_lock);
815 portdata->opened = 0;
816 spin_unlock_irq(&intfdata->susp_lock);
819 /* Stop reading urbs */
820 sierra_stop_rx_urbs(port);
821 /* .. and release them */
822 for (i = 0; i < portdata->num_in_urbs; i++) {
823 sierra_release_urb(portdata->in_urbs[i]);
824 portdata->in_urbs[i] = NULL;
829 static int sierra_open(struct tty_struct *tty, struct usb_serial_port *port)
831 struct sierra_port_private *portdata;
832 struct usb_serial *serial = port->serial;
833 struct sierra_intf_private *intfdata = serial->private;
839 portdata = usb_get_serial_port_data(port);
841 dev_dbg(&port->dev, "%s\n", __func__);
843 /* Set some sane defaults */
844 portdata->rts_state = 1;
845 portdata->dtr_state = 1;
848 endpoint = port->bulk_in_endpointAddress;
849 for (i = 0; i < portdata->num_in_urbs; i++) {
850 urb = sierra_setup_urb(serial, endpoint, USB_DIR_IN, port,
851 IN_BUFLEN, GFP_KERNEL,
852 sierra_indat_callback);
853 portdata->in_urbs[i] = urb;
855 /* clear halt condition */
856 usb_clear_halt(serial->dev,
857 usb_sndbulkpipe(serial->dev, endpoint) | USB_DIR_IN);
859 err = sierra_submit_rx_urbs(port, GFP_KERNEL);
861 /* get rid of everything as in close */
863 /* restore balance for autopm */
864 usb_autopm_put_interface(serial->interface);
867 sierra_send_setup(port);
869 serial->interface->needs_remote_wakeup = 1;
870 spin_lock_irq(&intfdata->susp_lock);
871 portdata->opened = 1;
872 spin_unlock_irq(&intfdata->susp_lock);
873 usb_autopm_put_interface(serial->interface);
879 static void sierra_dtr_rts(struct usb_serial_port *port, int on)
881 struct usb_serial *serial = port->serial;
882 struct sierra_port_private *portdata;
884 portdata = usb_get_serial_port_data(port);
885 portdata->rts_state = on;
886 portdata->dtr_state = on;
889 mutex_lock(&serial->disc_mutex);
890 if (!serial->disconnected)
891 sierra_send_setup(port);
892 mutex_unlock(&serial->disc_mutex);
896 static int sierra_startup(struct usb_serial *serial)
898 struct usb_serial_port *port;
899 struct sierra_port_private *portdata;
900 struct sierra_iface_info *himemoryp = NULL;
904 dev_dbg(&serial->dev->dev, "%s\n", __func__);
906 /* Set Device mode to D0 */
907 sierra_set_power_state(serial->dev, 0x0000);
909 /* Check NMEA and set */
911 sierra_vsc_set_nmea(serial->dev, 1);
913 /* Now setup per port private data */
914 for (i = 0; i < serial->num_ports; i++) {
915 port = serial->port[i];
916 portdata = kzalloc(sizeof(*portdata), GFP_KERNEL);
918 dev_dbg(&port->dev, "%s: kmalloc for "
919 "sierra_port_private (%d) failed!\n",
923 spin_lock_init(&portdata->lock);
924 init_usb_anchor(&portdata->active);
925 init_usb_anchor(&portdata->delayed);
927 /* Assume low memory requirements */
928 portdata->num_out_urbs = N_OUT_URB;
929 portdata->num_in_urbs = N_IN_URB;
931 /* Determine actual memory requirements */
932 if (serial->num_ports == 1) {
933 /* Get interface number for composite device */
934 ifnum = sierra_calc_interface(serial);
936 (struct sierra_iface_info *)&typeB_interface_list;
937 if (is_himemory(ifnum, himemoryp)) {
938 portdata->num_out_urbs = N_OUT_URB_HM;
939 portdata->num_in_urbs = N_IN_URB_HM;
944 (struct sierra_iface_info *)&typeA_interface_list;
945 if (is_himemory(i, himemoryp)) {
946 portdata->num_out_urbs = N_OUT_URB_HM;
947 portdata->num_in_urbs = N_IN_URB_HM;
950 dev_dbg(&serial->dev->dev,
951 "Memory usage (urbs) interface #%d, in=%d, out=%d\n",
952 ifnum,portdata->num_in_urbs, portdata->num_out_urbs );
953 /* Set the port private data pointer */
954 usb_set_serial_port_data(port, portdata);
960 static void sierra_release(struct usb_serial *serial)
963 struct usb_serial_port *port;
964 struct sierra_port_private *portdata;
966 dev_dbg(&serial->dev->dev, "%s\n", __func__);
968 for (i = 0; i < serial->num_ports; ++i) {
969 port = serial->port[i];
972 portdata = usb_get_serial_port_data(port);
980 static void stop_read_write_urbs(struct usb_serial *serial)
983 struct usb_serial_port *port;
984 struct sierra_port_private *portdata;
986 /* Stop reading/writing urbs */
987 for (i = 0; i < serial->num_ports; ++i) {
988 port = serial->port[i];
989 portdata = usb_get_serial_port_data(port);
990 sierra_stop_rx_urbs(port);
991 usb_kill_anchored_urbs(&portdata->active);
995 static int sierra_suspend(struct usb_serial *serial, pm_message_t message)
997 struct sierra_intf_private *intfdata;
1000 if (message.event & PM_EVENT_AUTO) {
1001 intfdata = serial->private;
1002 spin_lock_irq(&intfdata->susp_lock);
1003 b = intfdata->in_flight;
1006 spin_unlock_irq(&intfdata->susp_lock);
1009 intfdata->suspended = 1;
1010 spin_unlock_irq(&intfdata->susp_lock);
1013 stop_read_write_urbs(serial);
1018 static int sierra_resume(struct usb_serial *serial)
1020 struct usb_serial_port *port;
1021 struct sierra_intf_private *intfdata = serial->private;
1022 struct sierra_port_private *portdata;
1027 spin_lock_irq(&intfdata->susp_lock);
1028 for (i = 0; i < serial->num_ports; i++) {
1029 port = serial->port[i];
1030 portdata = usb_get_serial_port_data(port);
1032 while ((urb = usb_get_from_anchor(&portdata->delayed))) {
1033 usb_anchor_urb(urb, &portdata->active);
1034 intfdata->in_flight++;
1035 err = usb_submit_urb(urb, GFP_ATOMIC);
1037 intfdata->in_flight--;
1038 usb_unanchor_urb(urb);
1039 usb_scuttle_anchored_urbs(&portdata->delayed);
1044 if (portdata->opened) {
1045 err = sierra_submit_rx_urbs(port, GFP_ATOMIC);
1050 intfdata->suspended = 0;
1051 spin_unlock_irq(&intfdata->susp_lock);
1053 return ec ? -EIO : 0;
1056 static int sierra_reset_resume(struct usb_interface *intf)
1058 struct usb_serial *serial = usb_get_intfdata(intf);
1059 dev_err(&serial->dev->dev, "%s\n", __func__);
1060 return usb_serial_resume(intf);
1063 #define sierra_suspend NULL
1064 #define sierra_resume NULL
1065 #define sierra_reset_resume NULL
1068 static struct usb_driver sierra_driver = {
1070 .probe = usb_serial_probe,
1071 .disconnect = usb_serial_disconnect,
1072 .suspend = usb_serial_suspend,
1073 .resume = usb_serial_resume,
1074 .reset_resume = sierra_reset_resume,
1075 .id_table = id_table,
1077 .supports_autosuspend = 1,
1080 static struct usb_serial_driver sierra_device = {
1082 .owner = THIS_MODULE,
1085 .description = "Sierra USB modem",
1086 .id_table = id_table,
1087 .usb_driver = &sierra_driver,
1088 .calc_num_ports = sierra_calc_num_ports,
1089 .probe = sierra_probe,
1090 .open = sierra_open,
1091 .close = sierra_close,
1092 .dtr_rts = sierra_dtr_rts,
1093 .write = sierra_write,
1094 .write_room = sierra_write_room,
1095 .set_termios = sierra_set_termios,
1096 .tiocmget = sierra_tiocmget,
1097 .tiocmset = sierra_tiocmset,
1098 .attach = sierra_startup,
1099 .release = sierra_release,
1100 .suspend = sierra_suspend,
1101 .resume = sierra_resume,
1102 .read_int_callback = sierra_instat_callback,
1105 /* Functions used by new usb-serial code. */
1106 static int __init sierra_init(void)
1109 retval = usb_serial_register(&sierra_device);
1111 goto failed_device_register;
1114 retval = usb_register(&sierra_driver);
1116 goto failed_driver_register;
1118 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
1123 failed_driver_register:
1124 usb_serial_deregister(&sierra_device);
1125 failed_device_register:
1129 static void __exit sierra_exit(void)
1131 usb_deregister(&sierra_driver);
1132 usb_serial_deregister(&sierra_device);
1135 module_init(sierra_init);
1136 module_exit(sierra_exit);
1138 MODULE_AUTHOR(DRIVER_AUTHOR);
1139 MODULE_DESCRIPTION(DRIVER_DESC);
1140 MODULE_VERSION(DRIVER_VERSION);
1141 MODULE_LICENSE("GPL");
1143 module_param(nmea, bool, S_IRUGO | S_IWUSR);
1144 MODULE_PARM_DESC(nmea, "NMEA streaming");
1146 module_param(debug, bool, S_IRUGO | S_IWUSR);
1147 MODULE_PARM_DESC(debug, "Debug messages");