drivers/usb/serial/sierra.c

   1 /*
   2   USB Driver for Sierra Wireless
   3
   4   Copyright (C) 2006, 2007, 2008  Kevin Lloyd <linux@sierrawireless.com>
   5
   6   IMPORTANT DISCLAIMER: This driver is not commercially supported by
   7   Sierra Wireless. Use at your own risk.
   8
   9   This driver is free software; you can redistribute it and/or modify
  10   it under the terms of Version 2 of the GNU General Public License as
  11   published by the Free Software Foundation.
  12
  13   Portions based on the option driver by Matthias Urlichs <smurf@smurf.noris.de>
  14   Whom based his on the Keyspan driver by Hugh Blemings <hugh@blemings.org>
  15 */
  16
  17 #define DRIVER_VERSION "v.1.2.7"
  18 #define DRIVER_AUTHOR "Kevin Lloyd <linux@sierrawireless.com>"
  19 #define DRIVER_DESC "USB Driver for Sierra Wireless USB modems"
  20
  21 #include <linux/kernel.h>
  22 #include <linux/jiffies.h>
  23 #include <linux/errno.h>
  24 #include <linux/tty.h>
  25 #include <linux/tty_flip.h>
  26 #include <linux/module.h>
  27 #include <linux/usb.h>
  28 #include <linux/usb/serial.h>
  29 #include <linux/usb/ch9.h>
  30
  31 #define SWIMS_USB_REQUEST_SetPower      0x00
  32 #define SWIMS_USB_REQUEST_SetNmea       0x07
  33 #define SWIMS_USB_REQUEST_SetMode       0x0B
  34 #define SWIMS_USB_REQUEST_TYPE_VSC_SET  0x40
  35 #define SWIMS_SET_MODE_Modem            0x0001
  36
  37 /* per port private data */
  38 #define N_IN_URB        4
  39 #define N_OUT_URB       4
  40 #define IN_BUFLEN       4096
  41
  42 static int debug;
  43 static int nmea;
  44 static int truinstall = 1;
  45
  46 enum devicetype {
  47         DEVICE_3_PORT =         0,
  48         DEVICE_1_PORT =         1,
  49         DEVICE_INSTALLER =      2,
  50 };
  51
  52 static int sierra_set_power_state(struct usb_device *udev, __u16 swiState)
  53 {
  54         int result;
  55         dev_dbg(&udev->dev, "%s", "SET POWER STATE\n");
  56         result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
  57                         SWIMS_USB_REQUEST_SetPower,     /* __u8 request      */
  58                         SWIMS_USB_REQUEST_TYPE_VSC_SET, /* __u8 request type */
  59                         swiState,                       /* __u16 value       */
  60                         0,                              /* __u16 index       */
  61                         NULL,                           /* void *data        */
  62                         0,                              /* __u16 size        */
  63                         USB_CTRL_SET_TIMEOUT);          /* int timeout       */
  64         return result;
  65 }
  66
  67 static int sierra_set_ms_mode(struct usb_device *udev, __u16 eSWocMode)
  68 {
  69         int result;
  70         dev_dbg(&udev->dev, "%s", "DEVICE MODE SWITCH\n");
  71         result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
  72                         SWIMS_USB_REQUEST_SetMode,      /* __u8 request      */
  73                         SWIMS_USB_REQUEST_TYPE_VSC_SET, /* __u8 request type */
  74                         eSWocMode,                      /* __u16 value       */
  75                         0x0000,                         /* __u16 index       */
  76                         NULL,                           /* void *data        */
  77                         0,                              /* __u16 size        */
  78                         USB_CTRL_SET_TIMEOUT);          /* int timeout       */
  79         return result;
  80 }
  81
  82 static int sierra_vsc_set_nmea(struct usb_device *udev, __u16 enable)
  83 {
  84         int result;
  85         dev_dbg(&udev->dev, "%s", "NMEA Enable sent\n");
  86         result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
  87                         SWIMS_USB_REQUEST_SetNmea,      /* __u8 request      */
  88                         SWIMS_USB_REQUEST_TYPE_VSC_SET, /* __u8 request type */
  89                         enable,                         /* __u16 value       */
  90                         0x0000,                         /* __u16 index       */
  91                         NULL,                           /* void *data        */
  92                         0,                              /* __u16 size        */
  93                         USB_CTRL_SET_TIMEOUT);          /* int timeout       */
  94         return result;
  95 }
  96
  97 static int sierra_calc_num_ports(struct usb_serial *serial)
  98 {
  99         int result;
 100         int *num_ports = usb_get_serial_data(serial);
 101
 102         result = *num_ports;
 103
 104         if (result) {
 105                 kfree(num_ports);
 106                 usb_set_serial_data(serial, NULL);
 107         }
 108
 109         return result;
 110 }
 111
 112 static int sierra_probe(struct usb_serial *serial,
 113                         const struct usb_device_id *id)
 114 {
 115         int result = 0;
 116         struct usb_device *udev;
 117         int *num_ports;
 118         u8 ifnum;
 119
 120         num_ports = kmalloc(sizeof(*num_ports), GFP_KERNEL);
 121         if (!num_ports)
 122                 return -ENOMEM;
 123
 124         ifnum = serial->interface->cur_altsetting->desc.bInterfaceNumber;
 125         udev = serial->dev;
 126
 127         /* Check if in installer mode */
 128         if (truinstall && id->driver_info == DEVICE_INSTALLER) {
 129                 dev_dbg(&udev->dev, "%s", "FOUND TRU-INSTALL DEVICE(SW)\n");
 130                 result = sierra_set_ms_mode(udev, SWIMS_SET_MODE_Modem);
 131                 /* Don't bind to the device when in installer mode */
 132                 kfree(num_ports);
 133                 return -EIO;
 134         } else if (id->driver_info == DEVICE_1_PORT)
 135                 *num_ports = 1;
 136         else if (ifnum == 0x99)
 137                 *num_ports = 0;
 138         else
 139                 *num_ports = 3;
 140         /*
 141          * save off our num_ports info so that we can use it in the
 142          * calc_num_ports callback
 143          */
 144         usb_set_serial_data(serial, (void *)num_ports);
 145
 146         return result;
 147 }
 148
 149 static struct usb_device_id id_table [] = {
 150         { USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */
 151         { USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */
 152         { USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */
 153         { USB_DEVICE(0x0f30, 0x1b1d) }, /* Sierra Wireless MC5720 */
 154         { USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */
 155         { USB_DEVICE(0x1199, 0x0220) }, /* Sierra Wireless MC5725 */
 156         { USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */
 157         { USB_DEVICE(0x1199, 0x0021) }, /* Sierra Wireless AirCard 597E */
 158         { USB_DEVICE(0x1199, 0x0120) }, /* Sierra Wireless USB Dongle 595U */
 159         { USB_DEVICE(0x1199, 0x0023) }, /* Sierra Wireless AirCard */
 160
 161         { USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */
 162         { USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 */
 163         { USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */
 164         { USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 & AC 875U */
 165         { USB_DEVICE(0x1199, 0x6813) }, /* Sierra Wireless MC8775 (Thinkpad internal) */
 166         { USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */
 167         { USB_DEVICE(0x1199, 0x6832) }, /* Sierra Wireless MC8780*/
 168         { USB_DEVICE(0x1199, 0x6833) }, /* Sierra Wireless MC8781*/
 169         { USB_DEVICE(0x1199, 0x6850) }, /* Sierra Wireless AirCard 880 */
 170         { USB_DEVICE(0x1199, 0x6851) }, /* Sierra Wireless AirCard 881 */
 171         { USB_DEVICE(0x1199, 0x6852) }, /* Sierra Wireless AirCard 880 E */
 172         { USB_DEVICE(0x1199, 0x6853) }, /* Sierra Wireless AirCard 881 E */
 173         { USB_DEVICE(0x1199, 0x6855) }, /* Sierra Wireless AirCard 880 U */
 174         { USB_DEVICE(0x1199, 0x6856) }, /* Sierra Wireless AirCard 881 U */
 175
 176         { USB_DEVICE(0x1199, 0x6468) }, /* Sierra Wireless MP3G - EVDO */
 177         { USB_DEVICE(0x1199, 0x6469) }, /* Sierra Wireless MP3G - UMTS/HSPA */
 178
 179         { USB_DEVICE(0x1199, 0x0112), .driver_info = DEVICE_1_PORT }, /* Sierra Wireless AirCard 580 */
 180         { USB_DEVICE(0x0F3D, 0x0112), .driver_info = DEVICE_1_PORT }, /* Airprime/Sierra PC 5220 */
 181
 182         { USB_DEVICE(0x1199, 0x0FFF), .driver_info = DEVICE_INSTALLER},
 183         { }
 184 };
 185 MODULE_DEVICE_TABLE(usb, id_table);
 186
 187 static struct usb_driver sierra_driver = {
 188         .name       = "sierra",
 189         .probe      = usb_serial_probe,
 190         .disconnect = usb_serial_disconnect,
 191         .id_table   = id_table,
 192         .no_dynamic_id =        1,
 193 };
 194
 195 struct sierra_port_private {
 196         spinlock_t lock;        /* lock the structure */
 197         int outstanding_urbs;   /* number of out urbs in flight */
 198
 199         /* Input endpoints and buffer for this port */
 200         struct urb *in_urbs[N_IN_URB];
 201         char in_buffer[N_IN_URB][IN_BUFLEN];
 202
 203         /* Settings for the port */
 204         int rts_state;  /* Handshaking pins (outputs) */
 205         int dtr_state;
 206         int cts_state;  /* Handshaking pins (inputs) */
 207         int dsr_state;
 208         int dcd_state;
 209         int ri_state;
 210 };
 211
 212 static int sierra_send_setup(struct usb_serial_port *port)
 213 {
 214         struct usb_serial *serial = port->serial;
 215         struct sierra_port_private *portdata;
 216         __u16 interface = 0;
 217
 218         dbg("%s", __FUNCTION__);
 219
 220         portdata = usb_get_serial_port_data(port);
 221
 222         if (port->tty) {
 223                 int val = 0;
 224                 if (portdata->dtr_state)
 225                         val |= 0x01;
 226                 if (portdata->rts_state)
 227                         val |= 0x02;
 228
 229                 /* Determine which port is targeted */
 230                 if (port->bulk_out_endpointAddress == 2)
 231                         interface = 0;
 232                 else if (port->bulk_out_endpointAddress == 4)
 233                         interface = 1;
 234                 else if (port->bulk_out_endpointAddress == 5)
 235                         interface = 2;
 236
 237                 return usb_control_msg(serial->dev,
 238                                 usb_rcvctrlpipe(serial->dev, 0),
 239                                 0x22, 0x21, val, interface,
 240                                 NULL, 0, USB_CTRL_SET_TIMEOUT);
 241         }
 242
 243         return 0;
 244 }
 245
 246 static void sierra_rx_throttle(struct usb_serial_port *port)
 247 {
 248         dbg("%s", __FUNCTION__);
 249 }
 250
 251 static void sierra_rx_unthrottle(struct usb_serial_port *port)
 252 {
 253         dbg("%s", __FUNCTION__);
 254 }
 255
 256 static void sierra_break_ctl(struct usb_serial_port *port, int break_state)
 257 {
 258         /* Unfortunately, I don't know how to send a break */
 259         dbg("%s", __FUNCTION__);
 260 }
 261
 262 static void sierra_set_termios(struct usb_serial_port *port,
 263                         struct ktermios *old_termios)
 264 {
 265         dbg("%s", __FUNCTION__);
 266         tty_termios_copy_hw(port->tty->termios, old_termios);
 267         sierra_send_setup(port);
 268 }
 269
 270 static int sierra_tiocmget(struct usb_serial_port *port, struct file *file)
 271 {
 272         unsigned int value;
 273         struct sierra_port_private *portdata;
 274
 275         portdata = usb_get_serial_port_data(port);
 276
 277         value = ((portdata->rts_state) ? TIOCM_RTS : 0) |
 278                 ((portdata->dtr_state) ? TIOCM_DTR : 0) |
 279                 ((portdata->cts_state) ? TIOCM_CTS : 0) |
 280                 ((portdata->dsr_state) ? TIOCM_DSR : 0) |
 281                 ((portdata->dcd_state) ? TIOCM_CAR : 0) |
 282                 ((portdata->ri_state) ? TIOCM_RNG : 0);
 283
 284         return value;
 285 }
 286
 287 static int sierra_tiocmset(struct usb_serial_port *port, struct file *file,
 288                         unsigned int set, unsigned int clear)
 289 {
 290         struct sierra_port_private *portdata;
 291
 292         portdata = usb_get_serial_port_data(port);
 293
 294         if (set & TIOCM_RTS)
 295                 portdata->rts_state = 1;
 296         if (set & TIOCM_DTR)
 297                 portdata->dtr_state = 1;
 298
 299         if (clear & TIOCM_RTS)
 300                 portdata->rts_state = 0;
 301         if (clear & TIOCM_DTR)
 302                 portdata->dtr_state = 0;
 303         return sierra_send_setup(port);
 304 }
 305
 306 static int sierra_ioctl(struct usb_serial_port *port, struct file *file,
 307                         unsigned int cmd, unsigned long arg)
 308 {
 309         return -ENOIOCTLCMD;
 310 }
 311
 312 static void sierra_outdat_callback(struct urb *urb)
 313 {
 314         struct usb_serial_port *port = urb->context;
 315         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
 316         int status = urb->status;
 317         unsigned long flags;
 318
 319         dbg("%s - port %d", __FUNCTION__, port->number);
 320
 321         /* free up the transfer buffer, as usb_free_urb() does not do this */
 322         kfree(urb->transfer_buffer);
 323
 324         if (status)
 325                 dbg("%s - nonzero write bulk status received: %d",
 326                     __FUNCTION__, status);
 327
 328         spin_lock_irqsave(&portdata->lock, flags);
 329         --portdata->outstanding_urbs;
 330         spin_unlock_irqrestore(&portdata->lock, flags);
 331
 332         usb_serial_port_softint(port);
 333 }
 334
 335 /* Write */
 336 static int sierra_write(struct usb_serial_port *port,
 337                         const unsigned char *buf, int count)
 338 {
 339         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
 340         struct usb_serial *serial = port->serial;
 341         unsigned long flags;
 342         unsigned char *buffer;
 343         struct urb *urb;
 344         int status;
 345
 346         portdata = usb_get_serial_port_data(port);
 347
 348         dbg("%s: write (%d chars)", __FUNCTION__, count);
 349
 350         spin_lock_irqsave(&portdata->lock, flags);
 351         if (portdata->outstanding_urbs > N_OUT_URB) {
 352                 spin_unlock_irqrestore(&portdata->lock, flags);
 353                 dbg("%s - write limit hit\n", __FUNCTION__);
 354                 return 0;
 355         }
 356         portdata->outstanding_urbs++;
 357         spin_unlock_irqrestore(&portdata->lock, flags);
 358
 359         buffer = kmalloc(count, GFP_ATOMIC);
 360         if (!buffer) {
 361                 dev_err(&port->dev, "out of memory\n");
 362                 count = -ENOMEM;
 363                 goto error_no_buffer;
 364         }
 365
 366         urb = usb_alloc_urb(0, GFP_ATOMIC);
 367         if (!urb) {
 368                 dev_err(&port->dev, "no more free urbs\n");
 369                 count = -ENOMEM;
 370                 goto error_no_urb;
 371         }
 372
 373         memcpy(buffer, buf, count);
 374
 375         usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, buffer);
 376
 377         usb_fill_bulk_urb(urb, serial->dev,
 378                           usb_sndbulkpipe(serial->dev,
 379                                           port->bulk_out_endpointAddress),
 380                           buffer, count, sierra_outdat_callback, port);
 381
 382         /* send it down the pipe */
 383         status = usb_submit_urb(urb, GFP_ATOMIC);
 384         if (status) {
 385                 dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed "
 386                         "with status = %d\n", __FUNCTION__, status);
 387                 count = status;
 388                 goto error;
 389         }
 390
 391         /* we are done with this urb, so let the host driver
 392          * really free it when it is finished with it */
 393         usb_free_urb(urb);
 394
 395         return count;
 396 error:
 397         usb_free_urb(urb);
 398 error_no_urb:
 399         kfree(buffer);
 400 error_no_buffer:
 401         spin_lock_irqsave(&portdata->lock, flags);
 402         --portdata->outstanding_urbs;
 403         spin_unlock_irqrestore(&portdata->lock, flags);
 404         return count;
 405 }
 406
 407 static void sierra_indat_callback(struct urb *urb)
 408 {
 409         int err;
 410         int endpoint;
 411         struct usb_serial_port *port;
 412         struct tty_struct *tty;
 413         unsigned char *data = urb->transfer_buffer;
 414         int status = urb->status;
 415
 416         dbg("%s: %p", __FUNCTION__, urb);
 417
 418         endpoint = usb_pipeendpoint(urb->pipe);
 419         port = (struct usb_serial_port *) urb->context;
 420
 421         if (status) {
 422                 dbg("%s: nonzero status: %d on endpoint %02x.",
 423                     __FUNCTION__, status, endpoint);
 424         } else {
 425                 tty = port->tty;
 426                 if (urb->actual_length) {
 427                         tty_buffer_request_room(tty, urb->actual_length);
 428                         tty_insert_flip_string(tty, data, urb->actual_length);
 429                         tty_flip_buffer_push(tty);
 430                 } else {
 431                         dbg("%s: empty read urb received", __FUNCTION__);
 432                 }
 433
 434                 /* Resubmit urb so we continue receiving */
 435                 if (port->open_count && status != -ESHUTDOWN) {
 436                         err = usb_submit_urb(urb, GFP_ATOMIC);
 437                         if (err)
 438                                 dev_err(&port->dev, "resubmit read urb failed."
 439                                         "(%d)\n", err);
 440                 }
 441         }
 442         return;
 443 }
 444
 445 static void sierra_instat_callback(struct urb *urb)
 446 {
 447         int err;
 448         int status = urb->status;
 449         struct usb_serial_port *port = (struct usb_serial_port *) urb->context;
 450         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
 451         struct usb_serial *serial = port->serial;
 452
 453         dbg("%s", __FUNCTION__);
 454         dbg("%s: urb %p port %p has data %p", __FUNCTION__,urb,port,portdata);
 455
 456         if (status == 0) {
 457                 struct usb_ctrlrequest *req_pkt =
 458                                 (struct usb_ctrlrequest *)urb->transfer_buffer;
 459
 460                 if (!req_pkt) {
 461                         dbg("%s: NULL req_pkt\n", __FUNCTION__);
 462                         return;
 463                 }
 464                 if ((req_pkt->bRequestType == 0xA1) &&
 465                                 (req_pkt->bRequest == 0x20)) {
 466                         int old_dcd_state;
 467                         unsigned char signals = *((unsigned char *)
 468                                         urb->transfer_buffer +
 469                                         sizeof(struct usb_ctrlrequest));
 470
 471                         dbg("%s: signal x%x", __FUNCTION__, signals);
 472
 473                         old_dcd_state = portdata->dcd_state;
 474                         portdata->cts_state = 1;
 475                         portdata->dcd_state = ((signals & 0x01) ? 1 : 0);
 476                         portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
 477                         portdata->ri_state = ((signals & 0x08) ? 1 : 0);
 478
 479                         if (port->tty && !C_CLOCAL(port->tty) &&
 480                                         old_dcd_state && !portdata->dcd_state)
 481                                 tty_hangup(port->tty);
 482                 } else {
 483                         dbg("%s: type %x req %x", __FUNCTION__,
 484                                 req_pkt->bRequestType,req_pkt->bRequest);
 485                 }
 486         } else
 487                 dbg("%s: error %d", __FUNCTION__, status);
 488
 489         /* Resubmit urb so we continue receiving IRQ data */
 490         if (status != -ESHUTDOWN) {
 491                 urb->dev = serial->dev;
 492                 err = usb_submit_urb(urb, GFP_ATOMIC);
 493                 if (err)
 494                         dbg("%s: resubmit intr urb failed. (%d)",
 495                                 __FUNCTION__, err);
 496         }
 497 }
 498
 499 static int sierra_write_room(struct usb_serial_port *port)
 500 {
 501         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
 502         unsigned long flags;
 503
 504         dbg("%s - port %d", __FUNCTION__, port->number);
 505
 506         /* try to give a good number back based on if we have any free urbs at
 507          * this point in time */
 508         spin_lock_irqsave(&portdata->lock, flags);
 509         if (portdata->outstanding_urbs > N_OUT_URB * 2 / 3) {
 510                 spin_unlock_irqrestore(&portdata->lock, flags);
 511                 dbg("%s - write limit hit\n", __FUNCTION__);
 512                 return 0;
 513         }
 514         spin_unlock_irqrestore(&portdata->lock, flags);
 515
 516         return 2048;
 517 }
 518
 519 static int sierra_chars_in_buffer(struct usb_serial_port *port)
 520 {
 521         dbg("%s - port %d", __FUNCTION__, port->number);
 522
 523         /*
 524          * We can't really account for how much data we
 525          * have sent out, but hasn't made it through to the
 526          * device as we can't see the backend here, so just
 527          * tell the tty layer that everything is flushed.
 528          */
 529         return 0;
 530 }
 531
 532 static int sierra_open(struct usb_serial_port *port, struct file *filp)
 533 {
 534         struct sierra_port_private *portdata;
 535         struct usb_serial *serial = port->serial;
 536         int i;
 537         struct urb *urb;
 538         int result;
 539
 540         portdata = usb_get_serial_port_data(port);
 541
 542         dbg("%s", __FUNCTION__);
 543
 544         /* Set some sane defaults */
 545         portdata->rts_state = 1;
 546         portdata->dtr_state = 1;
 547
 548         /* Reset low level data toggle and start reading from endpoints */
 549         for (i = 0; i < N_IN_URB; i++) {
 550                 urb = portdata->in_urbs[i];
 551                 if (!urb)
 552                         continue;
 553                 if (urb->dev != serial->dev) {
 554                         dbg("%s: dev %p != %p", __FUNCTION__,
 555                                 urb->dev, serial->dev);
 556                         continue;
 557                 }
 558
 559                 /*
 560                  * make sure endpoint data toggle is synchronized with the
 561                  * device
 562                  */
 563                 usb_clear_halt(urb->dev, urb->pipe);
 564
 565                 result = usb_submit_urb(urb, GFP_KERNEL);
 566                 if (result) {
 567                         dev_err(&port->dev, "submit urb %d failed (%d) %d\n",
 568                                 i, result, urb->transfer_buffer_length);
 569                 }
 570         }
 571
 572         port->tty->low_latency = 1;
 573
 574         sierra_send_setup(port);
 575
 576         /* start up the interrupt endpoint if we have one */
 577         if (port->interrupt_in_urb) {
 578                 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
 579                 if (result)
 580                         dev_err(&port->dev, "submit irq_in urb failed %d\n",
 581                                 result);
 582         }
 583         return 0;
 584 }
 585
 586 static void sierra_close(struct usb_serial_port *port, struct file *filp)
 587 {
 588         int i;
 589         struct usb_serial *serial = port->serial;
 590         struct sierra_port_private *portdata;
 591
 592         dbg("%s", __FUNCTION__);
 593         portdata = usb_get_serial_port_data(port);
 594
 595         portdata->rts_state = 0;
 596         portdata->dtr_state = 0;
 597
 598         if (serial->dev) {
 599                 mutex_lock(&serial->disc_mutex);
 600                 if (!serial->disconnected)
 601                         sierra_send_setup(port);
 602                 mutex_unlock(&serial->disc_mutex);
 603
 604                 /* Stop reading/writing urbs */
 605                 for (i = 0; i < N_IN_URB; i++)
 606                         usb_kill_urb(portdata->in_urbs[i]);
 607         }
 608
 609         usb_kill_urb(port->interrupt_in_urb);
 610
 611         port->tty = NULL;
 612 }
 613
 614 static int sierra_startup(struct usb_serial *serial)
 615 {
 616         struct usb_serial_port *port;
 617         struct sierra_port_private *portdata;
 618         struct urb *urb;
 619         int i;
 620         int j;
 621
 622         dbg("%s", __FUNCTION__);
 623
 624         /* Set Device mode to D0 */
 625         sierra_set_power_state(serial->dev, 0x0000);
 626
 627         /* Check NMEA and set */
 628         if (nmea)
 629                 sierra_vsc_set_nmea(serial->dev, 1);
 630
 631         /* Now setup per port private data */
 632         for (i = 0; i < serial->num_ports; i++) {
 633                 port = serial->port[i];
 634                 portdata = kzalloc(sizeof(*portdata), GFP_KERNEL);
 635                 if (!portdata) {
 636                         dbg("%s: kmalloc for sierra_port_private (%d) failed!.",
 637                                         __FUNCTION__, i);
 638                         return -ENOMEM;
 639                 }
 640                 spin_lock_init(&portdata->lock);
 641
 642                 usb_set_serial_port_data(port, portdata);
 643
 644                 /* initialize the in urbs */
 645                 for (j = 0; j < N_IN_URB; ++j) {
 646                         urb = usb_alloc_urb(0, GFP_KERNEL);
 647                         if (urb == NULL) {
 648                                 dbg("%s: alloc for in port failed.",
 649                                     __FUNCTION__);
 650                                 continue;
 651                         }
 652                         /* Fill URB using supplied data. */
 653                         usb_fill_bulk_urb(urb, serial->dev,
 654                                           usb_rcvbulkpipe(serial->dev,
 655                                                 port->bulk_in_endpointAddress),
 656                                           portdata->in_buffer[j], IN_BUFLEN,
 657                                           sierra_indat_callback, port);
 658                         portdata->in_urbs[j] = urb;
 659                 }
 660         }
 661
 662         return 0;
 663 }
 664
 665 static void sierra_shutdown(struct usb_serial *serial)
 666 {
 667         int i, j;
 668         struct usb_serial_port *port;
 669         struct sierra_port_private *portdata;
 670
 671         dbg("%s", __FUNCTION__);
 672
 673         for (i = 0; i < serial->num_ports; ++i) {
 674                 port = serial->port[i];
 675                 if (!port)
 676                         continue;
 677                 portdata = usb_get_serial_port_data(port);
 678                 if (!portdata)
 679                         continue;
 680
 681                 for (j = 0; j < N_IN_URB; j++) {
 682                         usb_kill_urb(portdata->in_urbs[j]);
 683                         usb_free_urb(portdata->in_urbs[j]);
 684                         portdata->in_urbs[j] = NULL;
 685                 }
 686                 kfree(portdata);
 687                 usb_set_serial_port_data(port, NULL);
 688         }
 689 }
 690
 691 static struct usb_serial_driver sierra_device = {
 692         .driver = {
 693                 .owner =        THIS_MODULE,
 694                 .name =         "sierra1",
 695         },
 696         .description       = "Sierra USB modem",
 697         .id_table          = id_table,
 698         .usb_driver        = &sierra_driver,
 699         .num_interrupt_in  = NUM_DONT_CARE,
 700         .num_bulk_in       = NUM_DONT_CARE,
 701         .num_bulk_out      = NUM_DONT_CARE,
 702         .calc_num_ports    = sierra_calc_num_ports,
 703         .probe             = sierra_probe,
 704         .open              = sierra_open,
 705         .close             = sierra_close,
 706         .write             = sierra_write,
 707         .write_room        = sierra_write_room,
 708         .chars_in_buffer   = sierra_chars_in_buffer,
 709         .throttle          = sierra_rx_throttle,
 710         .unthrottle        = sierra_rx_unthrottle,
 711         .ioctl             = sierra_ioctl,
 712         .set_termios       = sierra_set_termios,
 713         .break_ctl         = sierra_break_ctl,
 714         .tiocmget          = sierra_tiocmget,
 715         .tiocmset          = sierra_tiocmset,
 716         .attach            = sierra_startup,
 717         .shutdown          = sierra_shutdown,
 718         .read_int_callback = sierra_instat_callback,
 719 };
 720
 721 /* Functions used by new usb-serial code. */
 722 static int __init sierra_init(void)
 723 {
 724         int retval;
 725         retval = usb_serial_register(&sierra_device);
 726         if (retval)
 727                 goto failed_device_register;
 728
 729
 730         retval = usb_register(&sierra_driver);
 731         if (retval)
 732                 goto failed_driver_register;
 733
 734         info(DRIVER_DESC ": " DRIVER_VERSION);
 735
 736         return 0;
 737
 738 failed_driver_register:
 739         usb_serial_deregister(&sierra_device);
 740 failed_device_register:
 741         return retval;
 742 }
 743
 744 static void __exit sierra_exit(void)
 745 {
 746         usb_deregister (&sierra_driver);
 747         usb_serial_deregister(&sierra_device);
 748 }
 749
 750 module_init(sierra_init);
 751 module_exit(sierra_exit);
 752
 753 MODULE_AUTHOR(DRIVER_AUTHOR);
 754 MODULE_DESCRIPTION(DRIVER_DESC);
 755 MODULE_VERSION(DRIVER_VERSION);
 756 MODULE_LICENSE("GPL");
 757
 758 module_param(truinstall, bool, 0);
 759 MODULE_PARM_DESC(truinstall, "TRU-Install support");
 760
 761 module_param(nmea, bool, 0);
 762 MODULE_PARM_DESC(nmea, "NMEA streaming");
 763
 764 #ifdef CONFIG_USB_DEBUG
 765 module_param(debug, bool, S_IRUGO | S_IWUSR);
 766 MODULE_PARM_DESC(debug, "Debug messages");
 767 #endif
 768