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 u8 sierra_interface_num(struct usb_serial *serial)
142 return serial->interface->cur_altsetting->desc.bInterfaceNumber;
145 static int sierra_probe(struct usb_serial *serial,
146 const struct usb_device_id *id)
149 struct usb_device *udev;
153 ifnum = sierra_interface_num(serial);
156 * If this interface supports more than 1 alternate
159 if (serial->interface->num_altsetting == 2) {
160 dev_dbg(&udev->dev, "Selecting alt setting for interface %d\n",
162 /* We know the alternate setting is 1 for the MC8785 */
163 usb_set_interface(udev, ifnum, 1);
166 if (is_blacklisted(ifnum,
167 (struct sierra_iface_info *)id->driver_info)) {
168 dev_dbg(&serial->dev->dev,
169 "Ignoring blacklisted interface #%d\n", ifnum);
176 /* interfaces with higher memory requirements */
177 static const u8 hi_memory_typeA_ifaces[] = { 0, 2 };
178 static const struct sierra_iface_info typeA_interface_list = {
179 .infolen = ARRAY_SIZE(hi_memory_typeA_ifaces),
180 .ifaceinfo = hi_memory_typeA_ifaces,
183 static const u8 hi_memory_typeB_ifaces[] = { 3, 4, 5, 6 };
184 static const struct sierra_iface_info typeB_interface_list = {
185 .infolen = ARRAY_SIZE(hi_memory_typeB_ifaces),
186 .ifaceinfo = hi_memory_typeB_ifaces,
189 /* 'blacklist' of interfaces not served by this driver */
190 static const u8 direct_ip_non_serial_ifaces[] = { 7, 8, 9, 10, 11, 19, 20 };
191 static const struct sierra_iface_info direct_ip_interface_blacklist = {
192 .infolen = ARRAY_SIZE(direct_ip_non_serial_ifaces),
193 .ifaceinfo = direct_ip_non_serial_ifaces,
196 static const struct usb_device_id id_table[] = {
197 { USB_DEVICE(0x0F3D, 0x0112) }, /* Airprime/Sierra PC 5220 */
198 { USB_DEVICE(0x03F0, 0x1B1D) }, /* HP ev2200 a.k.a MC5720 */
199 { USB_DEVICE(0x03F0, 0x211D) }, /* HP ev2210 a.k.a MC5725 */
200 { USB_DEVICE(0x03F0, 0x1E1D) }, /* HP hs2300 a.k.a MC8775 */
202 { USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */
203 { USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */
204 { USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */
205 { USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */
206 { USB_DEVICE(0x1199, 0x0220) }, /* Sierra Wireless MC5725 */
207 { USB_DEVICE(0x1199, 0x0022) }, /* Sierra Wireless EM5725 */
208 { USB_DEVICE(0x1199, 0x0024) }, /* Sierra Wireless MC5727 */
209 { USB_DEVICE(0x1199, 0x0224) }, /* Sierra Wireless MC5727 */
210 { USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */
211 { USB_DEVICE(0x1199, 0x0021) }, /* Sierra Wireless AirCard 597E */
212 { USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */
213 { USB_DEVICE(0x1199, 0x0120) }, /* Sierra Wireless USB Dongle 595U */
214 { USB_DEVICE(0x1199, 0x0301) }, /* Sierra Wireless USB Dongle 250U */
215 /* Sierra Wireless C597 */
216 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0023, 0xFF, 0xFF, 0xFF) },
217 /* Sierra Wireless T598 */
218 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0025, 0xFF, 0xFF, 0xFF) },
219 { USB_DEVICE(0x1199, 0x0026) }, /* Sierra Wireless T11 */
220 { USB_DEVICE(0x1199, 0x0027) }, /* Sierra Wireless AC402 */
221 { USB_DEVICE(0x1199, 0x0028) }, /* Sierra Wireless MC5728 */
222 { USB_DEVICE(0x1199, 0x0029) }, /* Sierra Wireless Device */
224 { USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */
225 { USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */
226 { USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 */
227 { USB_DEVICE(0x1199, 0x6805) }, /* Sierra Wireless MC8765 */
228 { USB_DEVICE(0x1199, 0x6808) }, /* Sierra Wireless MC8755 */
229 { USB_DEVICE(0x1199, 0x6809) }, /* Sierra Wireless MC8765 */
230 { USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 & AC 875U */
231 { USB_DEVICE(0x1199, 0x6813) }, /* Sierra Wireless MC8775 */
232 { USB_DEVICE(0x1199, 0x6815) }, /* Sierra Wireless MC8775 */
233 { USB_DEVICE(0x1199, 0x6816) }, /* Sierra Wireless MC8775 */
234 { USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */
235 { USB_DEVICE(0x1199, 0x6821) }, /* Sierra Wireless AirCard 875U */
236 { USB_DEVICE(0x1199, 0x6822) }, /* Sierra Wireless AirCard 875E */
237 { USB_DEVICE(0x1199, 0x6832) }, /* Sierra Wireless MC8780 */
238 { USB_DEVICE(0x1199, 0x6833) }, /* Sierra Wireless MC8781 */
239 { USB_DEVICE(0x1199, 0x6834) }, /* Sierra Wireless MC8780 */
240 { USB_DEVICE(0x1199, 0x6835) }, /* Sierra Wireless MC8781 */
241 { USB_DEVICE(0x1199, 0x6838) }, /* Sierra Wireless MC8780 */
242 { USB_DEVICE(0x1199, 0x6839) }, /* Sierra Wireless MC8781 */
243 { USB_DEVICE(0x1199, 0x683A) }, /* Sierra Wireless MC8785 */
244 { USB_DEVICE(0x1199, 0x683B) }, /* Sierra Wireless MC8785 Composite */
245 /* Sierra Wireless MC8790, MC8791, MC8792 Composite */
246 { USB_DEVICE(0x1199, 0x683C) },
247 { USB_DEVICE(0x1199, 0x683D) }, /* Sierra Wireless MC8791 Composite */
248 /* Sierra Wireless MC8790, MC8791, MC8792 */
249 { USB_DEVICE(0x1199, 0x683E) },
250 { USB_DEVICE(0x1199, 0x6850) }, /* Sierra Wireless AirCard 880 */
251 { USB_DEVICE(0x1199, 0x6851) }, /* Sierra Wireless AirCard 881 */
252 { USB_DEVICE(0x1199, 0x6852) }, /* Sierra Wireless AirCard 880 E */
253 { USB_DEVICE(0x1199, 0x6853) }, /* Sierra Wireless AirCard 881 E */
254 { USB_DEVICE(0x1199, 0x6855) }, /* Sierra Wireless AirCard 880 U */
255 { USB_DEVICE(0x1199, 0x6856) }, /* Sierra Wireless AirCard 881 U */
256 { USB_DEVICE(0x1199, 0x6859) }, /* Sierra Wireless AirCard 885 E */
257 { USB_DEVICE(0x1199, 0x685A) }, /* Sierra Wireless AirCard 885 E */
258 /* Sierra Wireless C885 */
259 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6880, 0xFF, 0xFF, 0xFF)},
260 /* Sierra Wireless C888, Air Card 501, USB 303, USB 304 */
261 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6890, 0xFF, 0xFF, 0xFF)},
262 /* Sierra Wireless C22/C33 */
263 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6891, 0xFF, 0xFF, 0xFF)},
264 /* Sierra Wireless HSPA Non-Composite Device */
265 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6892, 0xFF, 0xFF, 0xFF)},
266 { USB_DEVICE(0x1199, 0x6893) }, /* Sierra Wireless Device */
267 /* Sierra Wireless Direct IP modems */
268 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x68A3, 0xFF, 0xFF, 0xFF),
269 .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist
271 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x68AA, 0xFF, 0xFF, 0xFF),
272 .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist
274 { USB_DEVICE(0x1199, 0x68AB) }, /* Sierra Wireless AR8550 */
275 /* AT&T Direct IP LTE modems */
276 { USB_DEVICE_AND_INTERFACE_INFO(0x0F3D, 0x68AA, 0xFF, 0xFF, 0xFF),
277 .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist
279 /* Airprime/Sierra Wireless Direct IP modems */
280 { USB_DEVICE_AND_INTERFACE_INFO(0x0F3D, 0x68A3, 0xFF, 0xFF, 0xFF),
281 .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist
286 MODULE_DEVICE_TABLE(usb, id_table);
289 struct sierra_port_private {
290 spinlock_t lock; /* lock the structure */
291 int outstanding_urbs; /* number of out urbs in flight */
292 struct usb_anchor active;
293 struct usb_anchor delayed;
297 /* Input endpoints and buffers for this port */
298 struct urb *in_urbs[N_IN_URB_HM];
300 /* Settings for the port */
301 int rts_state; /* Handshaking pins (outputs) */
303 int cts_state; /* Handshaking pins (inputs) */
309 static int sierra_send_setup(struct usb_serial_port *port)
311 struct usb_serial *serial = port->serial;
312 struct sierra_port_private *portdata;
318 portdata = usb_get_serial_port_data(port);
320 if (portdata->dtr_state)
322 if (portdata->rts_state)
325 /* If composite device then properly report interface */
326 if (serial->num_ports == 1) {
327 interface = sierra_interface_num(serial);
328 /* Control message is sent only to interfaces with
329 * interrupt_in endpoints
331 if (port->interrupt_in_urb) {
332 /* send control message */
337 /* Otherwise the need to do non-composite mapping */
339 if (port->bulk_out_endpointAddress == 2)
341 else if (port->bulk_out_endpointAddress == 4)
343 else if (port->bulk_out_endpointAddress == 5)
351 retval = usb_autopm_get_interface(serial->interface);
355 retval = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
356 0x22, 0x21, val, interface, NULL, 0, USB_CTRL_SET_TIMEOUT);
357 usb_autopm_put_interface(serial->interface);
362 static int sierra_tiocmget(struct tty_struct *tty)
364 struct usb_serial_port *port = tty->driver_data;
366 struct sierra_port_private *portdata;
368 portdata = usb_get_serial_port_data(port);
370 value = ((portdata->rts_state) ? TIOCM_RTS : 0) |
371 ((portdata->dtr_state) ? TIOCM_DTR : 0) |
372 ((portdata->cts_state) ? TIOCM_CTS : 0) |
373 ((portdata->dsr_state) ? TIOCM_DSR : 0) |
374 ((portdata->dcd_state) ? TIOCM_CAR : 0) |
375 ((portdata->ri_state) ? TIOCM_RNG : 0);
380 static int sierra_tiocmset(struct tty_struct *tty,
381 unsigned int set, unsigned int clear)
383 struct usb_serial_port *port = tty->driver_data;
384 struct sierra_port_private *portdata;
386 portdata = usb_get_serial_port_data(port);
389 portdata->rts_state = 1;
391 portdata->dtr_state = 1;
393 if (clear & TIOCM_RTS)
394 portdata->rts_state = 0;
395 if (clear & TIOCM_DTR)
396 portdata->dtr_state = 0;
397 return sierra_send_setup(port);
400 static void sierra_release_urb(struct urb *urb)
403 kfree(urb->transfer_buffer);
408 static void sierra_outdat_callback(struct urb *urb)
410 struct usb_serial_port *port = urb->context;
411 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
412 struct sierra_intf_private *intfdata;
413 int status = urb->status;
415 intfdata = usb_get_serial_data(port->serial);
417 /* free up the transfer buffer, as usb_free_urb() does not do this */
418 kfree(urb->transfer_buffer);
419 usb_autopm_put_interface_async(port->serial->interface);
421 dev_dbg(&port->dev, "%s - nonzero write bulk status "
422 "received: %d\n", __func__, status);
424 spin_lock(&portdata->lock);
425 --portdata->outstanding_urbs;
426 spin_unlock(&portdata->lock);
427 spin_lock(&intfdata->susp_lock);
428 --intfdata->in_flight;
429 spin_unlock(&intfdata->susp_lock);
431 usb_serial_port_softint(port);
435 static int sierra_write(struct tty_struct *tty, struct usb_serial_port *port,
436 const unsigned char *buf, int count)
438 struct sierra_port_private *portdata;
439 struct sierra_intf_private *intfdata;
440 struct usb_serial *serial = port->serial;
442 unsigned char *buffer;
444 size_t writesize = min((size_t)count, (size_t)MAX_TRANSFER);
447 /* verify that we actually have some data to write */
451 portdata = usb_get_serial_port_data(port);
452 intfdata = usb_get_serial_data(serial);
454 dev_dbg(&port->dev, "%s: write (%zd bytes)\n", __func__, writesize);
455 spin_lock_irqsave(&portdata->lock, flags);
456 dev_dbg(&port->dev, "%s - outstanding_urbs: %d\n", __func__,
457 portdata->outstanding_urbs);
458 if (portdata->outstanding_urbs > portdata->num_out_urbs) {
459 spin_unlock_irqrestore(&portdata->lock, flags);
460 dev_dbg(&port->dev, "%s - write limit hit\n", __func__);
463 portdata->outstanding_urbs++;
464 dev_dbg(&port->dev, "%s - 1, outstanding_urbs: %d\n", __func__,
465 portdata->outstanding_urbs);
466 spin_unlock_irqrestore(&portdata->lock, flags);
468 retval = usb_autopm_get_interface_async(serial->interface);
470 spin_lock_irqsave(&portdata->lock, flags);
471 portdata->outstanding_urbs--;
472 spin_unlock_irqrestore(&portdata->lock, flags);
476 buffer = kmalloc(writesize, GFP_ATOMIC);
479 goto error_no_buffer;
482 urb = usb_alloc_urb(0, GFP_ATOMIC);
488 memcpy(buffer, buf, writesize);
490 usb_serial_debug_data(&port->dev, __func__, writesize, buffer);
492 usb_fill_bulk_urb(urb, serial->dev,
493 usb_sndbulkpipe(serial->dev,
494 port->bulk_out_endpointAddress),
495 buffer, writesize, sierra_outdat_callback, port);
497 /* Handle the need to send a zero length packet */
498 urb->transfer_flags |= URB_ZERO_PACKET;
500 spin_lock_irqsave(&intfdata->susp_lock, flags);
502 if (intfdata->suspended) {
503 usb_anchor_urb(urb, &portdata->delayed);
504 spin_unlock_irqrestore(&intfdata->susp_lock, flags);
507 usb_anchor_urb(urb, &portdata->active);
509 /* send it down the pipe */
510 retval = usb_submit_urb(urb, GFP_ATOMIC);
512 usb_unanchor_urb(urb);
513 spin_unlock_irqrestore(&intfdata->susp_lock, flags);
514 dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed "
515 "with status = %d\n", __func__, retval);
518 intfdata->in_flight++;
519 spin_unlock_irqrestore(&intfdata->susp_lock, flags);
523 /* we are done with this urb, so let the host driver
524 * really free it when it is finished with it */
533 spin_lock_irqsave(&portdata->lock, flags);
534 --portdata->outstanding_urbs;
535 dev_dbg(&port->dev, "%s - 2. outstanding_urbs: %d\n", __func__,
536 portdata->outstanding_urbs);
537 spin_unlock_irqrestore(&portdata->lock, flags);
538 usb_autopm_put_interface_async(serial->interface);
543 static void sierra_indat_callback(struct urb *urb)
547 struct usb_serial_port *port;
548 unsigned char *data = urb->transfer_buffer;
549 int status = urb->status;
551 endpoint = usb_pipeendpoint(urb->pipe);
555 dev_dbg(&port->dev, "%s: nonzero status: %d on"
556 " endpoint %02x\n", __func__, status, endpoint);
558 if (urb->actual_length) {
559 tty_insert_flip_string(&port->port, data,
561 tty_flip_buffer_push(&port->port);
563 usb_serial_debug_data(&port->dev, __func__,
564 urb->actual_length, data);
566 dev_dbg(&port->dev, "%s: empty read urb"
567 " received\n", __func__);
571 /* Resubmit urb so we continue receiving */
572 if (status != -ESHUTDOWN && status != -EPERM) {
573 usb_mark_last_busy(port->serial->dev);
574 err = usb_submit_urb(urb, GFP_ATOMIC);
575 if (err && err != -EPERM)
576 dev_err(&port->dev, "resubmit read urb failed."
581 static void sierra_instat_callback(struct urb *urb)
584 int status = urb->status;
585 struct usb_serial_port *port = urb->context;
586 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
587 struct usb_serial *serial = port->serial;
589 dev_dbg(&port->dev, "%s: urb %p port %p has data %p\n", __func__,
590 urb, port, portdata);
593 struct usb_ctrlrequest *req_pkt =
594 (struct usb_ctrlrequest *)urb->transfer_buffer;
597 dev_dbg(&port->dev, "%s: NULL req_pkt\n",
601 if ((req_pkt->bRequestType == 0xA1) &&
602 (req_pkt->bRequest == 0x20)) {
604 unsigned char signals = *((unsigned char *)
605 urb->transfer_buffer +
606 sizeof(struct usb_ctrlrequest));
608 dev_dbg(&port->dev, "%s: signal x%x\n", __func__,
611 old_dcd_state = portdata->dcd_state;
612 portdata->cts_state = 1;
613 portdata->dcd_state = ((signals & 0x01) ? 1 : 0);
614 portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
615 portdata->ri_state = ((signals & 0x08) ? 1 : 0);
617 if (old_dcd_state && !portdata->dcd_state)
618 tty_port_tty_hangup(&port->port, true);
620 dev_dbg(&port->dev, "%s: type %x req %x\n",
621 __func__, req_pkt->bRequestType,
625 dev_dbg(&port->dev, "%s: error %d\n", __func__, status);
627 /* Resubmit urb so we continue receiving IRQ data */
628 if (status != -ESHUTDOWN && status != -ENOENT) {
629 usb_mark_last_busy(serial->dev);
630 err = usb_submit_urb(urb, GFP_ATOMIC);
631 if (err && err != -EPERM)
632 dev_err(&port->dev, "%s: resubmit intr urb "
633 "failed. (%d)\n", __func__, err);
637 static int sierra_write_room(struct tty_struct *tty)
639 struct usb_serial_port *port = tty->driver_data;
640 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
643 /* try to give a good number back based on if we have any free urbs at
644 * this point in time */
645 spin_lock_irqsave(&portdata->lock, flags);
646 if (portdata->outstanding_urbs > (portdata->num_out_urbs * 2) / 3) {
647 spin_unlock_irqrestore(&portdata->lock, flags);
648 dev_dbg(&port->dev, "%s - write limit hit\n", __func__);
651 spin_unlock_irqrestore(&portdata->lock, flags);
656 static int sierra_chars_in_buffer(struct tty_struct *tty)
658 struct usb_serial_port *port = tty->driver_data;
659 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
663 /* NOTE: This overcounts somewhat. */
664 spin_lock_irqsave(&portdata->lock, flags);
665 chars = portdata->outstanding_urbs * MAX_TRANSFER;
666 spin_unlock_irqrestore(&portdata->lock, flags);
668 dev_dbg(&port->dev, "%s - %d\n", __func__, chars);
673 static void sierra_stop_rx_urbs(struct usb_serial_port *port)
676 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
678 for (i = 0; i < portdata->num_in_urbs; i++)
679 usb_kill_urb(portdata->in_urbs[i]);
681 usb_kill_urb(port->interrupt_in_urb);
684 static int sierra_submit_rx_urbs(struct usb_serial_port *port, gfp_t mem_flags)
690 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
693 for (i = 0; i < portdata->num_in_urbs; i++) {
694 urb = portdata->in_urbs[i];
697 err = usb_submit_urb(urb, mem_flags);
699 dev_err(&port->dev, "%s: submit urb failed: %d\n",
706 if (ok_cnt && port->interrupt_in_urb) {
707 err = usb_submit_urb(port->interrupt_in_urb, mem_flags);
709 dev_err(&port->dev, "%s: submit intr urb failed: %d\n",
714 if (ok_cnt > 0) /* at least one rx urb submitted */
720 static struct urb *sierra_setup_urb(struct usb_serial *serial, int endpoint,
721 int dir, void *ctx, int len,
723 usb_complete_t callback)
728 urb = usb_alloc_urb(0, mem_flags);
732 buf = kmalloc(len, mem_flags);
734 /* Fill URB using supplied data */
735 usb_fill_bulk_urb(urb, serial->dev,
736 usb_sndbulkpipe(serial->dev, endpoint) | dir,
737 buf, len, callback, ctx);
739 dev_dbg(&serial->dev->dev, "%s %c u : %p d:%p\n", __func__,
740 dir == USB_DIR_IN ? 'i' : 'o', urb, buf);
742 sierra_release_urb(urb);
749 static void sierra_close(struct usb_serial_port *port)
752 struct usb_serial *serial = port->serial;
753 struct sierra_port_private *portdata;
754 struct sierra_intf_private *intfdata = usb_get_serial_data(serial);
757 portdata = usb_get_serial_port_data(port);
760 * Need to take susp_lock to make sure port is not already being
761 * resumed, but no need to hold it due to initialized
763 spin_lock_irq(&intfdata->susp_lock);
764 if (--intfdata->open_ports == 0)
765 serial->interface->needs_remote_wakeup = 0;
766 spin_unlock_irq(&intfdata->susp_lock);
769 urb = usb_get_from_anchor(&portdata->delayed);
772 kfree(urb->transfer_buffer);
774 usb_autopm_put_interface_async(serial->interface);
775 spin_lock(&portdata->lock);
776 portdata->outstanding_urbs--;
777 spin_unlock(&portdata->lock);
780 sierra_stop_rx_urbs(port);
781 usb_kill_anchored_urbs(&portdata->active);
783 for (i = 0; i < portdata->num_in_urbs; i++) {
784 sierra_release_urb(portdata->in_urbs[i]);
785 portdata->in_urbs[i] = NULL;
788 usb_autopm_get_interface_no_resume(serial->interface);
791 static int sierra_open(struct tty_struct *tty, struct usb_serial_port *port)
793 struct sierra_port_private *portdata;
794 struct usb_serial *serial = port->serial;
795 struct sierra_intf_private *intfdata = usb_get_serial_data(serial);
801 portdata = usb_get_serial_port_data(port);
803 endpoint = port->bulk_in_endpointAddress;
804 for (i = 0; i < portdata->num_in_urbs; i++) {
805 urb = sierra_setup_urb(serial, endpoint, USB_DIR_IN, port,
806 IN_BUFLEN, GFP_KERNEL,
807 sierra_indat_callback);
808 portdata->in_urbs[i] = urb;
810 /* clear halt condition */
811 usb_clear_halt(serial->dev,
812 usb_sndbulkpipe(serial->dev, endpoint) | USB_DIR_IN);
814 err = sierra_submit_rx_urbs(port, GFP_KERNEL);
818 spin_lock_irq(&intfdata->susp_lock);
819 if (++intfdata->open_ports == 1)
820 serial->interface->needs_remote_wakeup = 1;
821 spin_unlock_irq(&intfdata->susp_lock);
822 usb_autopm_put_interface(serial->interface);
827 sierra_stop_rx_urbs(port);
829 for (i = 0; i < portdata->num_in_urbs; i++) {
830 sierra_release_urb(portdata->in_urbs[i]);
831 portdata->in_urbs[i] = NULL;
838 static void sierra_dtr_rts(struct usb_serial_port *port, int on)
840 struct sierra_port_private *portdata;
842 portdata = usb_get_serial_port_data(port);
843 portdata->rts_state = on;
844 portdata->dtr_state = on;
846 sierra_send_setup(port);
849 static int sierra_startup(struct usb_serial *serial)
851 struct sierra_intf_private *intfdata;
853 intfdata = kzalloc(sizeof(*intfdata), GFP_KERNEL);
857 spin_lock_init(&intfdata->susp_lock);
859 usb_set_serial_data(serial, intfdata);
861 /* Set Device mode to D0 */
862 sierra_set_power_state(serial->dev, 0x0000);
864 /* Check NMEA and set */
866 sierra_vsc_set_nmea(serial->dev, 1);
871 static void sierra_release(struct usb_serial *serial)
873 struct sierra_intf_private *intfdata;
875 intfdata = usb_get_serial_data(serial);
879 static int sierra_port_probe(struct usb_serial_port *port)
881 struct usb_serial *serial = port->serial;
882 struct sierra_port_private *portdata;
883 const struct sierra_iface_info *himemoryp;
886 portdata = kzalloc(sizeof(*portdata), GFP_KERNEL);
890 spin_lock_init(&portdata->lock);
891 init_usb_anchor(&portdata->active);
892 init_usb_anchor(&portdata->delayed);
894 /* Assume low memory requirements */
895 portdata->num_out_urbs = N_OUT_URB;
896 portdata->num_in_urbs = N_IN_URB;
898 /* Determine actual memory requirements */
899 if (serial->num_ports == 1) {
900 /* Get interface number for composite device */
901 ifnum = sierra_interface_num(serial);
902 himemoryp = &typeB_interface_list;
904 /* This is really the usb-serial port number of the interface
905 * rather than the interface number.
907 ifnum = port->port_number;
908 himemoryp = &typeA_interface_list;
911 if (is_himemory(ifnum, himemoryp)) {
912 portdata->num_out_urbs = N_OUT_URB_HM;
913 portdata->num_in_urbs = N_IN_URB_HM;
917 "Memory usage (urbs) interface #%d, in=%d, out=%d\n",
918 ifnum, portdata->num_in_urbs, portdata->num_out_urbs);
920 usb_set_serial_port_data(port, portdata);
925 static int sierra_port_remove(struct usb_serial_port *port)
927 struct sierra_port_private *portdata;
929 portdata = usb_get_serial_port_data(port);
930 usb_set_serial_port_data(port, NULL);
937 static void stop_read_write_urbs(struct usb_serial *serial)
940 struct usb_serial_port *port;
941 struct sierra_port_private *portdata;
943 /* Stop reading/writing urbs */
944 for (i = 0; i < serial->num_ports; ++i) {
945 port = serial->port[i];
946 portdata = usb_get_serial_port_data(port);
949 sierra_stop_rx_urbs(port);
950 usb_kill_anchored_urbs(&portdata->active);
954 static int sierra_suspend(struct usb_serial *serial, pm_message_t message)
956 struct sierra_intf_private *intfdata = usb_get_serial_data(serial);
958 spin_lock_irq(&intfdata->susp_lock);
959 if (PMSG_IS_AUTO(message)) {
960 if (intfdata->in_flight) {
961 spin_unlock_irq(&intfdata->susp_lock);
965 intfdata->suspended = 1;
966 spin_unlock_irq(&intfdata->susp_lock);
968 stop_read_write_urbs(serial);
973 /* Caller must hold susp_lock. */
974 static int sierra_submit_delayed_urbs(struct usb_serial_port *port)
976 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
977 struct sierra_intf_private *intfdata;
982 intfdata = usb_get_serial_data(port->serial);
985 urb = usb_get_from_anchor(&portdata->delayed);
989 usb_anchor_urb(urb, &portdata->active);
990 intfdata->in_flight++;
991 err = usb_submit_urb(urb, GFP_ATOMIC);
993 dev_err(&port->dev, "%s - submit urb failed: %d",
996 intfdata->in_flight--;
997 usb_unanchor_urb(urb);
998 kfree(urb->transfer_buffer);
1001 spin_lock(&portdata->lock);
1002 portdata->outstanding_urbs--;
1003 spin_unlock(&portdata->lock);
1013 static int sierra_resume(struct usb_serial *serial)
1015 struct usb_serial_port *port;
1016 struct sierra_intf_private *intfdata = usb_get_serial_data(serial);
1020 spin_lock_irq(&intfdata->susp_lock);
1021 for (i = 0; i < serial->num_ports; i++) {
1022 port = serial->port[i];
1024 if (!tty_port_initialized(&port->port))
1027 err = sierra_submit_delayed_urbs(port);
1031 err = sierra_submit_rx_urbs(port, GFP_ATOMIC);
1035 intfdata->suspended = 0;
1036 spin_unlock_irq(&intfdata->susp_lock);
1038 return ec ? -EIO : 0;
1042 #define sierra_suspend NULL
1043 #define sierra_resume NULL
1046 static struct usb_serial_driver sierra_device = {
1048 .owner = THIS_MODULE,
1051 .description = "Sierra USB modem",
1052 .id_table = id_table,
1053 .calc_num_ports = sierra_calc_num_ports,
1054 .probe = sierra_probe,
1055 .open = sierra_open,
1056 .close = sierra_close,
1057 .dtr_rts = sierra_dtr_rts,
1058 .write = sierra_write,
1059 .write_room = sierra_write_room,
1060 .chars_in_buffer = sierra_chars_in_buffer,
1061 .tiocmget = sierra_tiocmget,
1062 .tiocmset = sierra_tiocmset,
1063 .attach = sierra_startup,
1064 .release = sierra_release,
1065 .port_probe = sierra_port_probe,
1066 .port_remove = sierra_port_remove,
1067 .suspend = sierra_suspend,
1068 .resume = sierra_resume,
1069 .read_int_callback = sierra_instat_callback,
1072 static struct usb_serial_driver * const serial_drivers[] = {
1073 &sierra_device, NULL
1076 module_usb_serial_driver(serial_drivers, id_table);
1078 MODULE_AUTHOR(DRIVER_AUTHOR);
1079 MODULE_DESCRIPTION(DRIVER_DESC);
1080 MODULE_LICENSE("GPL");
1082 module_param(nmea, bool, S_IRUGO | S_IWUSR);
1083 MODULE_PARM_DESC(nmea, "NMEA streaming");