drivers/usb/serial/sierra.c

   1 /*
   2   USB Driver for Sierra Wireless
   3
   4   Copyright (C) 2006, 2007  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.1.2.5b"
  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
  30 #define SWIMS_USB_REQUEST_SetMode       0x0B
  31 #define SWIMS_USB_REQUEST_TYPE_SetMode  0x40
  32 #define SWIMS_USB_INDEX_SetMode         0x0000
  33 #define SWIMS_SET_MODE_Modem            0x0001
  34
  35 /* per port private data */
  36 #define N_IN_URB        4
  37 #define N_OUT_URB       4
  38 #define IN_BUFLEN       4096
  39
  40 static int debug;
  41
  42 enum devicetype {
  43         DEVICE_3_PORT =         0,
  44         DEVICE_1_PORT =         1,
  45         DEVICE_INSTALLER =      2,
  46 };
  47
  48 static int sierra_set_power_state(struct usb_device *udev, __u16 swiState)
  49 {
  50         int result;
  51         dev_dbg(&udev->dev, "%s", "SET POWER STATE");
  52         result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
  53                         0x00,                   /* __u8 request      */
  54                         0x40,                   /* __u8 request type */
  55                         swiState,               /* __u16 value       */
  56                         0,                      /* __u16 index       */
  57                         NULL,                   /* void *data        */
  58                         0,                      /* __u16 size        */
  59                         USB_CTRL_SET_TIMEOUT);  /* int timeout       */
  60         return result;
  61 }
  62
  63 static int sierra_set_ms_mode(struct usb_device *udev, __u16 eSocMode)
  64 {
  65         int result;
  66         dev_dbg(&udev->dev, "%s", "DEVICE MODE SWITCH");
  67         result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
  68                         SWIMS_USB_REQUEST_SetMode,      /* __u8 request      */
  69                         SWIMS_USB_REQUEST_TYPE_SetMode, /* __u8 request type */
  70                         eSocMode,                       /* __u16 value       */
  71                         SWIMS_USB_INDEX_SetMode,        /* __u16 index       */
  72                         NULL,                           /* void *data        */
  73                         0,                              /* __u16 size        */
  74                         USB_CTRL_SET_TIMEOUT);          /* int timeout       */
  75         return result;
  76 }
  77
  78 static int sierra_probe(struct usb_interface *iface,
  79                         const struct usb_device_id *id)
  80 {
  81         int result;
  82         struct usb_device *udev;
  83
  84         udev = usb_get_dev(interface_to_usbdev(iface));
  85
  86         /* Check if in installer mode */
  87         if (id->driver_info == DEVICE_INSTALLER) {
  88                 dev_dbg(&udev->dev, "%s", "FOUND DEVICE(SW)\n");
  89                 result = sierra_set_ms_mode(udev, SWIMS_SET_MODE_Modem);
  90                 /*We do not want to bind to the device when in installer mode*/
  91                 return -EIO;
  92         }
  93
  94         return usb_serial_probe(iface, id);
  95 }
  96
  97 static struct usb_device_id id_table [] = {
  98         { USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */
  99         { USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */
 100         { USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */
 101         { USB_DEVICE(0x0f30, 0x1b1d) }, /* Sierra Wireless MC5720 */
 102         { USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */
 103         { USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */
 104         { USB_DEVICE(0x1199, 0x0021) }, /* Sierra Wireless AirCard 597E */
 105         { USB_DEVICE(0x1199, 0x0120) }, /* Sierra Wireless USB Dongle 595U */
 106
 107         { USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */
 108         { USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 */
 109         { USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */
 110         { USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 & AC 875U */
 111         { USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */
 112         { USB_DEVICE(0x1199, 0x6832) }, /* Sierra Wireless MC8780*/
 113         { USB_DEVICE(0x1199, 0x6833) }, /* Sierra Wireless MC8781*/
 114         { USB_DEVICE(0x1199, 0x6850) }, /* Sierra Wireless AirCard 880 */
 115         { USB_DEVICE(0x1199, 0x6851) }, /* Sierra Wireless AirCard 881 */
 116         { USB_DEVICE(0x1199, 0x6852) }, /* Sierra Wireless AirCard 880 E */
 117         { USB_DEVICE(0x1199, 0x6853) }, /* Sierra Wireless AirCard 881 E */
 118
 119         { USB_DEVICE(0x1199, 0x0112), .driver_info = DEVICE_1_PORT }, /* Sierra Wireless AirCard 580 */
 120         { USB_DEVICE(0x0F3D, 0x0112), .driver_info = DEVICE_1_PORT }, /* Airprime/Sierra PC 5220 */
 121
 122         { USB_DEVICE(0x1199, 0x0FFF), .driver_info = DEVICE_INSTALLER},
 123         { }
 124 };
 125 MODULE_DEVICE_TABLE(usb, id_table);
 126
 127 static struct usb_device_id id_table_1port [] = {
 128         { USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */
 129         { USB_DEVICE(0x0F3D, 0x0112) }, /* AirPrime/Sierra PC 5220 */
 130         { }
 131 };
 132
 133 static struct usb_device_id id_table_3port [] = {
 134         { USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */
 135         { USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */
 136         { USB_DEVICE(0x0f30, 0x1b1d) }, /* Sierra Wireless MC5720 */
 137         { USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */
 138         { USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */
 139         { USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */
 140         { USB_DEVICE(0x1199, 0x0021) }, /* Sierra Wireless AirCard 597E */
 141         { USB_DEVICE(0x1199, 0x0120) }, /* Sierra Wireless USB Dongle 595U*/
 142
 143         { USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */
 144         { USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 */
 145         { USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */
 146         { USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 & AC 875U */
 147         { USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */
 148         { USB_DEVICE(0x1199, 0x6832) }, /* Sierra Wireless MC8780*/
 149         { USB_DEVICE(0x1199, 0x6833) }, /* Sierra Wireless MC8781*/
 150         { USB_DEVICE(0x1199, 0x6850) }, /* Sierra Wireless AirCard 880 */
 151         { USB_DEVICE(0x1199, 0x6851) }, /* Sierra Wireless AirCard 881 */
 152         { USB_DEVICE(0x1199, 0x6852) }, /* Sierra Wireless AirCard 880E */
 153         { USB_DEVICE(0x1199, 0x6853) }, /* Sierra Wireless AirCard 881E */
 154         { }
 155 };
 156
 157 static struct usb_driver sierra_driver = {
 158         .name       = "sierra",
 159         .probe      = sierra_probe,
 160         .disconnect = usb_serial_disconnect,
 161         .id_table   = id_table,
 162         .no_dynamic_id =        1,
 163 };
 164
 165
 166 struct sierra_port_private {
 167         spinlock_t lock;        /* lock the structure */
 168         int outstanding_urbs;   /* number of out urbs in flight */
 169
 170         /* Input endpoints and buffer for this port */
 171         struct urb *in_urbs[N_IN_URB];
 172         char in_buffer[N_IN_URB][IN_BUFLEN];
 173
 174         /* Settings for the port */
 175         int rts_state;  /* Handshaking pins (outputs) */
 176         int dtr_state;
 177         int cts_state;  /* Handshaking pins (inputs) */
 178         int dsr_state;
 179         int dcd_state;
 180         int ri_state;
 181 };
 182
 183 static int sierra_send_setup(struct usb_serial_port *port)
 184 {
 185         struct usb_serial *serial = port->serial;
 186         struct sierra_port_private *portdata;
 187
 188         dbg("%s", __FUNCTION__);
 189
 190         portdata = usb_get_serial_port_data(port);
 191
 192         if (port->tty) {
 193                 int val = 0;
 194                 if (portdata->dtr_state)
 195                         val |= 0x01;
 196                 if (portdata->rts_state)
 197                         val |= 0x02;
 198
 199                 return usb_control_msg(serial->dev,
 200                                 usb_rcvctrlpipe(serial->dev, 0),
 201                                 0x22,0x21,val,0,NULL,0,USB_CTRL_SET_TIMEOUT);
 202         }
 203
 204         return 0;
 205 }
 206
 207 static void sierra_rx_throttle(struct usb_serial_port *port)
 208 {
 209         dbg("%s", __FUNCTION__);
 210 }
 211
 212 static void sierra_rx_unthrottle(struct usb_serial_port *port)
 213 {
 214         dbg("%s", __FUNCTION__);
 215 }
 216
 217 static void sierra_break_ctl(struct usb_serial_port *port, int break_state)
 218 {
 219         /* Unfortunately, I don't know how to send a break */
 220         dbg("%s", __FUNCTION__);
 221 }
 222
 223 static void sierra_set_termios(struct usb_serial_port *port,
 224                         struct ktermios *old_termios)
 225 {
 226         dbg("%s", __FUNCTION__);
 227
 228         sierra_send_setup(port);
 229 }
 230
 231 static int sierra_tiocmget(struct usb_serial_port *port, struct file *file)
 232 {
 233         unsigned int value;
 234         struct sierra_port_private *portdata;
 235
 236         portdata = usb_get_serial_port_data(port);
 237
 238         value = ((portdata->rts_state) ? TIOCM_RTS : 0) |
 239                 ((portdata->dtr_state) ? TIOCM_DTR : 0) |
 240                 ((portdata->cts_state) ? TIOCM_CTS : 0) |
 241                 ((portdata->dsr_state) ? TIOCM_DSR : 0) |
 242                 ((portdata->dcd_state) ? TIOCM_CAR : 0) |
 243                 ((portdata->ri_state) ? TIOCM_RNG : 0);
 244
 245         return value;
 246 }
 247
 248 static int sierra_tiocmset(struct usb_serial_port *port, struct file *file,
 249                         unsigned int set, unsigned int clear)
 250 {
 251         struct sierra_port_private *portdata;
 252
 253         portdata = usb_get_serial_port_data(port);
 254
 255         if (set & TIOCM_RTS)
 256                 portdata->rts_state = 1;
 257         if (set & TIOCM_DTR)
 258                 portdata->dtr_state = 1;
 259
 260         if (clear & TIOCM_RTS)
 261                 portdata->rts_state = 0;
 262         if (clear & TIOCM_DTR)
 263                 portdata->dtr_state = 0;
 264         return sierra_send_setup(port);
 265 }
 266
 267 static int sierra_ioctl(struct usb_serial_port *port, struct file *file,
 268                         unsigned int cmd, unsigned long arg)
 269 {
 270         return -ENOIOCTLCMD;
 271 }
 272
 273 static void sierra_outdat_callback(struct urb *urb)
 274 {
 275         struct usb_serial_port *port = urb->context;
 276         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
 277         int status = urb->status;
 278         unsigned long flags;
 279
 280         dbg("%s - port %d", __FUNCTION__, port->number);
 281
 282         /* free up the transfer buffer, as usb_free_urb() does not do this */
 283         kfree(urb->transfer_buffer);
 284
 285         if (status)
 286                 dbg("%s - nonzero write bulk status received: %d",
 287                     __FUNCTION__, status);
 288
 289         spin_lock_irqsave(&portdata->lock, flags);
 290         --portdata->outstanding_urbs;
 291         spin_unlock_irqrestore(&portdata->lock, flags);
 292
 293         usb_serial_port_softint(port);
 294 }
 295
 296 /* Write */
 297 static int sierra_write(struct usb_serial_port *port,
 298                         const unsigned char *buf, int count)
 299 {
 300         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
 301         struct usb_serial *serial = port->serial;
 302         unsigned long flags;
 303         unsigned char *buffer;
 304         struct urb *urb;
 305         int status;
 306
 307         portdata = usb_get_serial_port_data(port);
 308
 309         dbg("%s: write (%d chars)", __FUNCTION__, count);
 310
 311         spin_lock_irqsave(&portdata->lock, flags);
 312         if (portdata->outstanding_urbs > N_OUT_URB) {
 313                 spin_unlock_irqrestore(&portdata->lock, flags);
 314                 dbg("%s - write limit hit\n", __FUNCTION__);
 315                 return 0;
 316         }
 317         portdata->outstanding_urbs++;
 318         spin_unlock_irqrestore(&portdata->lock, flags);
 319
 320         buffer = kmalloc(count, GFP_ATOMIC);
 321         if (!buffer) {
 322                 dev_err(&port->dev, "out of memory\n");
 323                 count = -ENOMEM;
 324                 goto error_no_buffer;
 325         }
 326
 327         urb = usb_alloc_urb(0, GFP_ATOMIC);
 328         if (!urb) {
 329                 dev_err(&port->dev, "no more free urbs\n");
 330                 count = -ENOMEM;
 331                 goto error_no_urb;
 332         }
 333
 334         memcpy(buffer, buf, count);
 335
 336         usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, buffer);
 337
 338         usb_fill_bulk_urb(urb, serial->dev,
 339                           usb_sndbulkpipe(serial->dev,
 340                                           port->bulk_out_endpointAddress),
 341                           buffer, count, sierra_outdat_callback, port);
 342
 343         /* send it down the pipe */
 344         status = usb_submit_urb(urb, GFP_ATOMIC);
 345         if (status) {
 346                 dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed "
 347                         "with status = %d\n", __FUNCTION__, status);
 348                 count = status;
 349                 goto error;
 350         }
 351
 352         /* we are done with this urb, so let the host driver
 353          * really free it when it is finished with it */
 354         usb_free_urb(urb);
 355
 356         return count;
 357 error:
 358         usb_free_urb(urb);
 359 error_no_urb:
 360         kfree(buffer);
 361 error_no_buffer:
 362         spin_lock_irqsave(&portdata->lock, flags);
 363         --portdata->outstanding_urbs;
 364         spin_unlock_irqrestore(&portdata->lock, flags);
 365         return count;
 366 }
 367
 368 static void sierra_indat_callback(struct urb *urb)
 369 {
 370         int err;
 371         int endpoint;
 372         struct usb_serial_port *port;
 373         struct tty_struct *tty;
 374         unsigned char *data = urb->transfer_buffer;
 375         int status = urb->status;
 376
 377         dbg("%s: %p", __FUNCTION__, urb);
 378
 379         endpoint = usb_pipeendpoint(urb->pipe);
 380         port = (struct usb_serial_port *) urb->context;
 381
 382         if (status) {
 383                 dbg("%s: nonzero status: %d on endpoint %02x.",
 384                     __FUNCTION__, status, endpoint);
 385         } else {
 386                 tty = port->tty;
 387                 if (urb->actual_length) {
 388                         tty_buffer_request_room(tty, urb->actual_length);
 389                         tty_insert_flip_string(tty, data, urb->actual_length);
 390                         tty_flip_buffer_push(tty);
 391                 } else {
 392                         dbg("%s: empty read urb received", __FUNCTION__);
 393                 }
 394
 395                 /* Resubmit urb so we continue receiving */
 396                 if (port->open_count && status != -ESHUTDOWN) {
 397                         err = usb_submit_urb(urb, GFP_ATOMIC);
 398                         if (err)
 399                                 dev_err(&port->dev, "resubmit read urb failed."
 400                                         "(%d)", err);
 401                 }
 402         }
 403         return;
 404 }
 405
 406 static void sierra_instat_callback(struct urb *urb)
 407 {
 408         int err;
 409         int status = urb->status;
 410         struct usb_serial_port *port = (struct usb_serial_port *) urb->context;
 411         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
 412         struct usb_serial *serial = port->serial;
 413
 414         dbg("%s", __FUNCTION__);
 415         dbg("%s: urb %p port %p has data %p", __FUNCTION__,urb,port,portdata);
 416
 417         if (status == 0) {
 418                 struct usb_ctrlrequest *req_pkt =
 419                                 (struct usb_ctrlrequest *)urb->transfer_buffer;
 420
 421                 if (!req_pkt) {
 422                         dbg("%s: NULL req_pkt\n", __FUNCTION__);
 423                         return;
 424                 }
 425                 if ((req_pkt->bRequestType == 0xA1) &&
 426                                 (req_pkt->bRequest == 0x20)) {
 427                         int old_dcd_state;
 428                         unsigned char signals = *((unsigned char *)
 429                                         urb->transfer_buffer +
 430                                         sizeof(struct usb_ctrlrequest));
 431
 432                         dbg("%s: signal x%x", __FUNCTION__, signals);
 433
 434                         old_dcd_state = portdata->dcd_state;
 435                         portdata->cts_state = 1;
 436                         portdata->dcd_state = ((signals & 0x01) ? 1 : 0);
 437                         portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
 438                         portdata->ri_state = ((signals & 0x08) ? 1 : 0);
 439
 440                         if (port->tty && !C_CLOCAL(port->tty) &&
 441                                         old_dcd_state && !portdata->dcd_state)
 442                                 tty_hangup(port->tty);
 443                 } else {
 444                         dbg("%s: type %x req %x", __FUNCTION__,
 445                                 req_pkt->bRequestType,req_pkt->bRequest);
 446                 }
 447         } else
 448                 dbg("%s: error %d", __FUNCTION__, status);
 449
 450         /* Resubmit urb so we continue receiving IRQ data */
 451         if (status != -ESHUTDOWN) {
 452                 urb->dev = serial->dev;
 453                 err = usb_submit_urb(urb, GFP_ATOMIC);
 454                 if (err)
 455                         dbg("%s: resubmit intr urb failed. (%d)",
 456                                 __FUNCTION__, err);
 457         }
 458 }
 459
 460 static int sierra_write_room(struct usb_serial_port *port)
 461 {
 462         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
 463         unsigned long flags;
 464
 465         dbg("%s - port %d", __FUNCTION__, port->number);
 466
 467         /* try to give a good number back based on if we have any free urbs at
 468          * this point in time */
 469         spin_lock_irqsave(&portdata->lock, flags);
 470         if (portdata->outstanding_urbs > N_OUT_URB * 2 / 3) {
 471                 spin_unlock_irqrestore(&portdata->lock, flags);
 472                 dbg("%s - write limit hit\n", __FUNCTION__);
 473                 return 0;
 474         }
 475         spin_unlock_irqrestore(&portdata->lock, flags);
 476
 477         return 2048;
 478 }
 479
 480 static int sierra_chars_in_buffer(struct usb_serial_port *port)
 481 {
 482         dbg("%s - port %d", __FUNCTION__, port->number);
 483
 484         /*
 485          * We can't really account for how much data we
 486          * have sent out, but hasn't made it through to the
 487          * device as we can't see the backend here, so just
 488          * tell the tty layer that everything is flushed.
 489          */
 490         return 0;
 491 }
 492
 493 static int sierra_open(struct usb_serial_port *port, struct file *filp)
 494 {
 495         struct sierra_port_private *portdata;
 496         struct usb_serial *serial = port->serial;
 497         int i;
 498         struct urb *urb;
 499         int result;
 500
 501         portdata = usb_get_serial_port_data(port);
 502
 503         dbg("%s", __FUNCTION__);
 504
 505         /* Set some sane defaults */
 506         portdata->rts_state = 1;
 507         portdata->dtr_state = 1;
 508
 509         /* Reset low level data toggle and start reading from endpoints */
 510         for (i = 0; i < N_IN_URB; i++) {
 511                 urb = portdata->in_urbs[i];
 512                 if (!urb)
 513                         continue;
 514                 if (urb->dev != serial->dev) {
 515                         dbg("%s: dev %p != %p", __FUNCTION__,
 516                                 urb->dev, serial->dev);
 517                         continue;
 518                 }
 519
 520                 /*
 521                  * make sure endpoint data toggle is synchronized with the
 522                  * device
 523                  */
 524                 usb_clear_halt(urb->dev, urb->pipe);
 525
 526                 result = usb_submit_urb(urb, GFP_KERNEL);
 527                 if (result) {
 528                         dev_err(&port->dev, "submit urb %d failed (%d) %d",
 529                                 i, result, urb->transfer_buffer_length);
 530                 }
 531         }
 532
 533         port->tty->low_latency = 1;
 534
 535         sierra_send_setup(port);
 536
 537         /* start up the interrupt endpoint if we have one */
 538         if (port->interrupt_in_urb) {
 539                 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
 540                 if (result)
 541                         dev_err(&port->dev, "submit irq_in urb failed %d",
 542                                 result);
 543         }
 544         return 0;
 545 }
 546
 547 static void sierra_close(struct usb_serial_port *port, struct file *filp)
 548 {
 549         int i;
 550         struct usb_serial *serial = port->serial;
 551         struct sierra_port_private *portdata;
 552
 553         dbg("%s", __FUNCTION__);
 554         portdata = usb_get_serial_port_data(port);
 555
 556         portdata->rts_state = 0;
 557         portdata->dtr_state = 0;
 558
 559         if (serial->dev) {
 560                 sierra_send_setup(port);
 561
 562                 /* Stop reading/writing urbs */
 563                 for (i = 0; i < N_IN_URB; i++)
 564                         usb_kill_urb(portdata->in_urbs[i]);
 565         }
 566
 567         usb_kill_urb(port->interrupt_in_urb);
 568
 569         port->tty = NULL;
 570 }
 571
 572 static int sierra_startup(struct usb_serial *serial)
 573 {
 574         struct usb_serial_port *port;
 575         struct sierra_port_private *portdata;
 576         struct urb *urb;
 577         int i;
 578         int j;
 579
 580         dbg("%s", __FUNCTION__);
 581
 582         /*Set Device mode to D0 */
 583         sierra_set_power_state(serial->dev, 0x0000);
 584
 585         /* Now setup per port private data */
 586         for (i = 0; i < serial->num_ports; i++) {
 587                 port = serial->port[i];
 588                 portdata = kzalloc(sizeof(*portdata), GFP_KERNEL);
 589                 if (!portdata) {
 590                         dbg("%s: kmalloc for sierra_port_private (%d) failed!.",
 591                                         __FUNCTION__, i);
 592                         return -ENOMEM;
 593                 }
 594                 spin_lock_init(&portdata->lock);
 595
 596                 usb_set_serial_port_data(port, portdata);
 597
 598                 /* initialize the in urbs */
 599                 for (j = 0; j < N_IN_URB; ++j) {
 600                         urb = usb_alloc_urb(0, GFP_KERNEL);
 601                         if (urb == NULL) {
 602                                 dbg("%s: alloc for in port failed.",
 603                                     __FUNCTION__);
 604                                 continue;
 605                         }
 606                         /* Fill URB using supplied data. */
 607                         usb_fill_bulk_urb(urb, serial->dev,
 608                                           usb_rcvbulkpipe(serial->dev,
 609                                                 port->bulk_in_endpointAddress),
 610                                           portdata->in_buffer[j], IN_BUFLEN,
 611                                           sierra_indat_callback, port);
 612                         portdata->in_urbs[j] = urb;
 613                 }
 614         }
 615
 616         return 0;
 617 }
 618
 619 static void sierra_shutdown(struct usb_serial *serial)
 620 {
 621         int i, j;
 622         struct usb_serial_port *port;
 623         struct sierra_port_private *portdata;
 624
 625         dbg("%s", __FUNCTION__);
 626
 627         for (i = 0; i < serial->num_ports; ++i) {
 628                 port = serial->port[i];
 629                 if (!port)
 630                         continue;
 631                 portdata = usb_get_serial_port_data(port);
 632                 if (!portdata)
 633                         continue;
 634
 635                 for (j = 0; j < N_IN_URB; j++) {
 636                         usb_kill_urb(portdata->in_urbs[j]);
 637                         usb_free_urb(portdata->in_urbs[j]);
 638                         portdata->in_urbs[j] = NULL;
 639                 }
 640                 kfree(portdata);
 641                 usb_set_serial_port_data(port, NULL);
 642         }
 643 }
 644
 645 static struct usb_serial_driver sierra_1port_device = {
 646         .driver = {
 647                 .owner =        THIS_MODULE,
 648                 .name =         "sierra1",
 649         },
 650         .description       = "Sierra USB modem (1 port)",
 651         .id_table          = id_table_1port,
 652         .usb_driver        = &sierra_driver,
 653         .num_interrupt_in  = NUM_DONT_CARE,
 654         .num_bulk_in       = 1,
 655         .num_bulk_out      = 1,
 656         .num_ports         = 1,
 657         .open              = sierra_open,
 658         .close             = sierra_close,
 659         .write             = sierra_write,
 660         .write_room        = sierra_write_room,
 661         .chars_in_buffer   = sierra_chars_in_buffer,
 662         .throttle          = sierra_rx_throttle,
 663         .unthrottle        = sierra_rx_unthrottle,
 664         .ioctl             = sierra_ioctl,
 665         .set_termios       = sierra_set_termios,
 666         .break_ctl         = sierra_break_ctl,
 667         .tiocmget          = sierra_tiocmget,
 668         .tiocmset          = sierra_tiocmset,
 669         .attach            = sierra_startup,
 670         .shutdown          = sierra_shutdown,
 671         .read_int_callback = sierra_instat_callback,
 672 };
 673
 674 static struct usb_serial_driver sierra_3port_device = {
 675         .driver = {
 676                 .owner =        THIS_MODULE,
 677                 .name =         "sierra3",
 678         },
 679         .description       = "Sierra USB modem (3 port)",
 680         .id_table          = id_table_3port,
 681         .usb_driver        = &sierra_driver,
 682         .num_interrupt_in  = NUM_DONT_CARE,
 683         .num_bulk_in       = 3,
 684         .num_bulk_out      = 3,
 685         .num_ports         = 3,
 686         .open              = sierra_open,
 687         .close             = sierra_close,
 688         .write             = sierra_write,
 689         .write_room        = sierra_write_room,
 690         .chars_in_buffer   = sierra_chars_in_buffer,
 691         .throttle          = sierra_rx_throttle,
 692         .unthrottle        = sierra_rx_unthrottle,
 693         .ioctl             = sierra_ioctl,
 694         .set_termios       = sierra_set_termios,
 695         .break_ctl         = sierra_break_ctl,
 696         .tiocmget          = sierra_tiocmget,
 697         .tiocmset          = sierra_tiocmset,
 698         .attach            = sierra_startup,
 699         .shutdown          = sierra_shutdown,
 700         .read_int_callback = sierra_instat_callback,
 701 };
 702
 703 /* Functions used by new usb-serial code. */
 704 static int __init sierra_init(void)
 705 {
 706         int retval;
 707         retval = usb_serial_register(&sierra_1port_device);
 708         if (retval)
 709                 goto failed_1port_device_register;
 710         retval = usb_serial_register(&sierra_3port_device);
 711         if (retval)
 712                 goto failed_3port_device_register;
 713
 714
 715         retval = usb_register(&sierra_driver);
 716         if (retval)
 717                 goto failed_driver_register;
 718
 719         info(DRIVER_DESC ": " DRIVER_VERSION);
 720
 721         return 0;
 722
 723 failed_driver_register:
 724         usb_serial_deregister(&sierra_3port_device);
 725 failed_3port_device_register:
 726         usb_serial_deregister(&sierra_1port_device);
 727 failed_1port_device_register:
 728         return retval;
 729 }
 730
 731 static void __exit sierra_exit(void)
 732 {
 733         usb_deregister (&sierra_driver);
 734         usb_serial_deregister(&sierra_1port_device);
 735         usb_serial_deregister(&sierra_3port_device);
 736 }
 737
 738 module_init(sierra_init);
 739 module_exit(sierra_exit);
 740
 741 MODULE_AUTHOR(DRIVER_AUTHOR);
 742 MODULE_DESCRIPTION(DRIVER_DESC);
 743 MODULE_VERSION(DRIVER_VERSION);
 744 MODULE_LICENSE("GPL");
 745
 746 #ifdef CONFIG_USB_DEBUG
 747 module_param(debug, bool, S_IRUGO | S_IWUSR);
 748 MODULE_PARM_DESC(debug, "Debug messages");
 749 #endif
 750