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.1.2.8"
  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, 0x6815) }, /* Sierra Wireless MC8775 */
 167         { USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */
 168         { USB_DEVICE(0x1199, 0x6832) }, /* Sierra Wireless MC8780*/
 169         { USB_DEVICE(0x1199, 0x6833) }, /* Sierra Wireless MC8781*/
 170         { USB_DEVICE(0x1199, 0x6850) }, /* Sierra Wireless AirCard 880 */
 171         { USB_DEVICE(0x1199, 0x6851) }, /* Sierra Wireless AirCard 881 */
 172         { USB_DEVICE(0x1199, 0x6852) }, /* Sierra Wireless AirCard 880 E */
 173         { USB_DEVICE(0x1199, 0x6853) }, /* Sierra Wireless AirCard 881 E */
 174         { USB_DEVICE(0x1199, 0x6855) }, /* Sierra Wireless AirCard 880 U */
 175         { USB_DEVICE(0x1199, 0x6856) }, /* Sierra Wireless AirCard 881 U */
 176
 177         { USB_DEVICE(0x1199, 0x6468) }, /* Sierra Wireless MP3G - EVDO */
 178         { USB_DEVICE(0x1199, 0x6469) }, /* Sierra Wireless MP3G - UMTS/HSPA */
 179
 180         { USB_DEVICE(0x1199, 0x0112), .driver_info = DEVICE_1_PORT }, /* Sierra Wireless AirCard 580 */
 181         { USB_DEVICE(0x0F3D, 0x0112), .driver_info = DEVICE_1_PORT }, /* Airprime/Sierra PC 5220 */
 182
 183         { USB_DEVICE(0x1199, 0x0FFF), .driver_info = DEVICE_INSTALLER},
 184         { }
 185 };
 186 MODULE_DEVICE_TABLE(usb, id_table);
 187
 188 static struct usb_driver sierra_driver = {
 189         .name       = "sierra",
 190         .probe      = usb_serial_probe,
 191         .disconnect = usb_serial_disconnect,
 192         .id_table   = id_table,
 193         .no_dynamic_id =        1,
 194 };
 195
 196 struct sierra_port_private {
 197         spinlock_t lock;        /* lock the structure */
 198         int outstanding_urbs;   /* number of out urbs in flight */
 199
 200         /* Input endpoints and buffers for this port */
 201         struct urb *in_urbs[N_IN_URB];
 202         char *in_buffer[N_IN_URB];
 203
 204         /* Settings for the port */
 205         int rts_state;  /* Handshaking pins (outputs) */
 206         int dtr_state;
 207         int cts_state;  /* Handshaking pins (inputs) */
 208         int dsr_state;
 209         int dcd_state;
 210         int ri_state;
 211 };
 212
 213 static int sierra_send_setup(struct usb_serial_port *port)
 214 {
 215         struct usb_serial *serial = port->serial;
 216         struct sierra_port_private *portdata;
 217         __u16 interface = 0;
 218
 219         dbg("%s", __FUNCTION__);
 220
 221         portdata = usb_get_serial_port_data(port);
 222
 223         if (port->tty) {
 224                 int val = 0;
 225                 if (portdata->dtr_state)
 226                         val |= 0x01;
 227                 if (portdata->rts_state)
 228                         val |= 0x02;
 229
 230                 /* Determine which port is targeted */
 231                 if (port->bulk_out_endpointAddress == 2)
 232                         interface = 0;
 233                 else if (port->bulk_out_endpointAddress == 4)
 234                         interface = 1;
 235                 else if (port->bulk_out_endpointAddress == 5)
 236                         interface = 2;
 237
 238                 return usb_control_msg(serial->dev,
 239                                 usb_rcvctrlpipe(serial->dev, 0),
 240                                 0x22, 0x21, val, interface,
 241                                 NULL, 0, USB_CTRL_SET_TIMEOUT);
 242         }
 243
 244         return 0;
 245 }
 246
 247 static void sierra_rx_throttle(struct usb_serial_port *port)
 248 {
 249         dbg("%s", __FUNCTION__);
 250 }
 251
 252 static void sierra_rx_unthrottle(struct usb_serial_port *port)
 253 {
 254         dbg("%s", __FUNCTION__);
 255 }
 256
 257 static void sierra_break_ctl(struct usb_serial_port *port, int break_state)
 258 {
 259         /* Unfortunately, I don't know how to send a break */
 260         dbg("%s", __FUNCTION__);
 261 }
 262
 263 static void sierra_set_termios(struct usb_serial_port *port,
 264                         struct ktermios *old_termios)
 265 {
 266         dbg("%s", __FUNCTION__);
 267         tty_termios_copy_hw(port->tty->termios, old_termios);
 268         sierra_send_setup(port);
 269 }
 270
 271 static int sierra_tiocmget(struct usb_serial_port *port, struct file *file)
 272 {
 273         unsigned int value;
 274         struct sierra_port_private *portdata;
 275
 276         portdata = usb_get_serial_port_data(port);
 277
 278         value = ((portdata->rts_state) ? TIOCM_RTS : 0) |
 279                 ((portdata->dtr_state) ? TIOCM_DTR : 0) |
 280                 ((portdata->cts_state) ? TIOCM_CTS : 0) |
 281                 ((portdata->dsr_state) ? TIOCM_DSR : 0) |
 282                 ((portdata->dcd_state) ? TIOCM_CAR : 0) |
 283                 ((portdata->ri_state) ? TIOCM_RNG : 0);
 284
 285         return value;
 286 }
 287
 288 static int sierra_tiocmset(struct usb_serial_port *port, struct file *file,
 289                         unsigned int set, unsigned int clear)
 290 {
 291         struct sierra_port_private *portdata;
 292
 293         portdata = usb_get_serial_port_data(port);
 294
 295         if (set & TIOCM_RTS)
 296                 portdata->rts_state = 1;
 297         if (set & TIOCM_DTR)
 298                 portdata->dtr_state = 1;
 299
 300         if (clear & TIOCM_RTS)
 301                 portdata->rts_state = 0;
 302         if (clear & TIOCM_DTR)
 303                 portdata->dtr_state = 0;
 304         return sierra_send_setup(port);
 305 }
 306
 307 static int sierra_ioctl(struct usb_serial_port *port, struct file *file,
 308                         unsigned int cmd, unsigned long arg)
 309 {
 310         return -ENOIOCTLCMD;
 311 }
 312
 313 static void sierra_outdat_callback(struct urb *urb)
 314 {
 315         struct usb_serial_port *port = urb->context;
 316         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
 317         int status = urb->status;
 318         unsigned long flags;
 319
 320         dbg("%s - port %d", __FUNCTION__, port->number);
 321
 322         /* free up the transfer buffer, as usb_free_urb() does not do this */
 323         kfree(urb->transfer_buffer);
 324
 325         if (status)
 326                 dbg("%s - nonzero write bulk status received: %d",
 327                     __FUNCTION__, status);
 328
 329         spin_lock_irqsave(&portdata->lock, flags);
 330         --portdata->outstanding_urbs;
 331         spin_unlock_irqrestore(&portdata->lock, flags);
 332
 333         usb_serial_port_softint(port);
 334 }
 335
 336 /* Write */
 337 static int sierra_write(struct usb_serial_port *port,
 338                         const unsigned char *buf, int count)
 339 {
 340         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
 341         struct usb_serial *serial = port->serial;
 342         unsigned long flags;
 343         unsigned char *buffer;
 344         struct urb *urb;
 345         int status;
 346
 347         portdata = usb_get_serial_port_data(port);
 348
 349         dbg("%s: write (%d chars)", __FUNCTION__, count);
 350
 351         spin_lock_irqsave(&portdata->lock, flags);
 352         if (portdata->outstanding_urbs > N_OUT_URB) {
 353                 spin_unlock_irqrestore(&portdata->lock, flags);
 354                 dbg("%s - write limit hit\n", __FUNCTION__);
 355                 return 0;
 356         }
 357         portdata->outstanding_urbs++;
 358         spin_unlock_irqrestore(&portdata->lock, flags);
 359
 360         buffer = kmalloc(count, GFP_ATOMIC);
 361         if (!buffer) {
 362                 dev_err(&port->dev, "out of memory\n");
 363                 count = -ENOMEM;
 364                 goto error_no_buffer;
 365         }
 366
 367         urb = usb_alloc_urb(0, GFP_ATOMIC);
 368         if (!urb) {
 369                 dev_err(&port->dev, "no more free urbs\n");
 370                 count = -ENOMEM;
 371                 goto error_no_urb;
 372         }
 373
 374         memcpy(buffer, buf, count);
 375
 376         usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, buffer);
 377
 378         usb_fill_bulk_urb(urb, serial->dev,
 379                           usb_sndbulkpipe(serial->dev,
 380                                           port->bulk_out_endpointAddress),
 381                           buffer, count, sierra_outdat_callback, port);
 382
 383         /* send it down the pipe */
 384         status = usb_submit_urb(urb, GFP_ATOMIC);
 385         if (status) {
 386                 dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed "
 387                         "with status = %d\n", __FUNCTION__, status);
 388                 count = status;
 389                 goto error;
 390         }
 391
 392         /* we are done with this urb, so let the host driver
 393          * really free it when it is finished with it */
 394         usb_free_urb(urb);
 395
 396         return count;
 397 error:
 398         usb_free_urb(urb);
 399 error_no_urb:
 400         kfree(buffer);
 401 error_no_buffer:
 402         spin_lock_irqsave(&portdata->lock, flags);
 403         --portdata->outstanding_urbs;
 404         spin_unlock_irqrestore(&portdata->lock, flags);
 405         return count;
 406 }
 407
 408 static void sierra_indat_callback(struct urb *urb)
 409 {
 410         int err;
 411         int endpoint;
 412         struct usb_serial_port *port;
 413         struct tty_struct *tty;
 414         unsigned char *data = urb->transfer_buffer;
 415         int status = urb->status;
 416
 417         dbg("%s: %p", __FUNCTION__, urb);
 418
 419         endpoint = usb_pipeendpoint(urb->pipe);
 420         port = (struct usb_serial_port *) urb->context;
 421
 422         if (status) {
 423                 dbg("%s: nonzero status: %d on endpoint %02x.",
 424                     __FUNCTION__, status, endpoint);
 425         } else {
 426                 tty = port->tty;
 427                 if (urb->actual_length) {
 428                         tty_buffer_request_room(tty, urb->actual_length);
 429                         tty_insert_flip_string(tty, data, urb->actual_length);
 430                         tty_flip_buffer_push(tty);
 431                 } else {
 432                         dbg("%s: empty read urb received", __FUNCTION__);
 433                 }
 434
 435                 /* Resubmit urb so we continue receiving */
 436                 if (port->open_count && status != -ESHUTDOWN) {
 437                         err = usb_submit_urb(urb, GFP_ATOMIC);
 438                         if (err)
 439                                 dev_err(&port->dev, "resubmit read urb failed."
 440                                         "(%d)\n", err);
 441                 }
 442         }
 443         return;
 444 }
 445
 446 static void sierra_instat_callback(struct urb *urb)
 447 {
 448         int err;
 449         int status = urb->status;
 450         struct usb_serial_port *port = (struct usb_serial_port *) urb->context;
 451         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
 452         struct usb_serial *serial = port->serial;
 453
 454         dbg("%s", __FUNCTION__);
 455         dbg("%s: urb %p port %p has data %p", __FUNCTION__,urb,port,portdata);
 456
 457         if (status == 0) {
 458                 struct usb_ctrlrequest *req_pkt =
 459                                 (struct usb_ctrlrequest *)urb->transfer_buffer;
 460
 461                 if (!req_pkt) {
 462                         dbg("%s: NULL req_pkt\n", __FUNCTION__);
 463                         return;
 464                 }
 465                 if ((req_pkt->bRequestType == 0xA1) &&
 466                                 (req_pkt->bRequest == 0x20)) {
 467                         int old_dcd_state;
 468                         unsigned char signals = *((unsigned char *)
 469                                         urb->transfer_buffer +
 470                                         sizeof(struct usb_ctrlrequest));
 471
 472                         dbg("%s: signal x%x", __FUNCTION__, signals);
 473
 474                         old_dcd_state = portdata->dcd_state;
 475                         portdata->cts_state = 1;
 476                         portdata->dcd_state = ((signals & 0x01) ? 1 : 0);
 477                         portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
 478                         portdata->ri_state = ((signals & 0x08) ? 1 : 0);
 479
 480                         if (port->tty && !C_CLOCAL(port->tty) &&
 481                                         old_dcd_state && !portdata->dcd_state)
 482                                 tty_hangup(port->tty);
 483                 } else {
 484                         dbg("%s: type %x req %x", __FUNCTION__,
 485                                 req_pkt->bRequestType,req_pkt->bRequest);
 486                 }
 487         } else
 488                 dbg("%s: error %d", __FUNCTION__, status);
 489
 490         /* Resubmit urb so we continue receiving IRQ data */
 491         if (status != -ESHUTDOWN) {
 492                 urb->dev = serial->dev;
 493                 err = usb_submit_urb(urb, GFP_ATOMIC);
 494                 if (err)
 495                         dbg("%s: resubmit intr urb failed. (%d)",
 496                                 __FUNCTION__, err);
 497         }
 498 }
 499
 500 static int sierra_write_room(struct usb_serial_port *port)
 501 {
 502         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
 503         unsigned long flags;
 504
 505         dbg("%s - port %d", __FUNCTION__, port->number);
 506
 507         /* try to give a good number back based on if we have any free urbs at
 508          * this point in time */
 509         spin_lock_irqsave(&portdata->lock, flags);
 510         if (portdata->outstanding_urbs > N_OUT_URB * 2 / 3) {
 511                 spin_unlock_irqrestore(&portdata->lock, flags);
 512                 dbg("%s - write limit hit\n", __FUNCTION__);
 513                 return 0;
 514         }
 515         spin_unlock_irqrestore(&portdata->lock, flags);
 516
 517         return 2048;
 518 }
 519
 520 static int sierra_chars_in_buffer(struct usb_serial_port *port)
 521 {
 522         dbg("%s - port %d", __FUNCTION__, port->number);
 523
 524         /*
 525          * We can't really account for how much data we
 526          * have sent out, but hasn't made it through to the
 527          * device as we can't see the backend here, so just
 528          * tell the tty layer that everything is flushed.
 529          */
 530         return 0;
 531 }
 532
 533 static int sierra_open(struct usb_serial_port *port, struct file *filp)
 534 {
 535         struct sierra_port_private *portdata;
 536         struct usb_serial *serial = port->serial;
 537         int i;
 538         struct urb *urb;
 539         int result;
 540
 541         portdata = usb_get_serial_port_data(port);
 542
 543         dbg("%s", __FUNCTION__);
 544
 545         /* Set some sane defaults */
 546         portdata->rts_state = 1;
 547         portdata->dtr_state = 1;
 548
 549         /* Reset low level data toggle and start reading from endpoints */
 550         for (i = 0; i < N_IN_URB; i++) {
 551                 urb = portdata->in_urbs[i];
 552                 if (!urb)
 553                         continue;
 554                 if (urb->dev != serial->dev) {
 555                         dbg("%s: dev %p != %p", __FUNCTION__,
 556                                 urb->dev, serial->dev);
 557                         continue;
 558                 }
 559
 560                 /*
 561                  * make sure endpoint data toggle is synchronized with the
 562                  * device
 563                  */
 564                 usb_clear_halt(urb->dev, urb->pipe);
 565
 566                 result = usb_submit_urb(urb, GFP_KERNEL);
 567                 if (result) {
 568                         dev_err(&port->dev, "submit urb %d failed (%d) %d\n",
 569                                 i, result, urb->transfer_buffer_length);
 570                 }
 571         }
 572
 573         port->tty->low_latency = 1;
 574
 575         sierra_send_setup(port);
 576
 577         /* start up the interrupt endpoint if we have one */
 578         if (port->interrupt_in_urb) {
 579                 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
 580                 if (result)
 581                         dev_err(&port->dev, "submit irq_in urb failed %d\n",
 582                                 result);
 583         }
 584         return 0;
 585 }
 586
 587 static void sierra_close(struct usb_serial_port *port, struct file *filp)
 588 {
 589         int i;
 590         struct usb_serial *serial = port->serial;
 591         struct sierra_port_private *portdata;
 592
 593         dbg("%s", __FUNCTION__);
 594         portdata = usb_get_serial_port_data(port);
 595
 596         portdata->rts_state = 0;
 597         portdata->dtr_state = 0;
 598
 599         if (serial->dev) {
 600                 mutex_lock(&serial->disc_mutex);
 601                 if (!serial->disconnected)
 602                         sierra_send_setup(port);
 603                 mutex_unlock(&serial->disc_mutex);
 604
 605                 /* Stop reading/writing urbs */
 606                 for (i = 0; i < N_IN_URB; i++)
 607                         usb_kill_urb(portdata->in_urbs[i]);
 608         }
 609
 610         usb_kill_urb(port->interrupt_in_urb);
 611
 612         port->tty = NULL;
 613 }
 614
 615 static int sierra_startup(struct usb_serial *serial)
 616 {
 617         struct usb_serial_port *port;
 618         struct sierra_port_private *portdata;
 619         struct urb *urb;
 620         int i;
 621         int j;
 622
 623         dbg("%s", __FUNCTION__);
 624
 625         /* Set Device mode to D0 */
 626         sierra_set_power_state(serial->dev, 0x0000);
 627
 628         /* Check NMEA and set */
 629         if (nmea)
 630                 sierra_vsc_set_nmea(serial->dev, 1);
 631
 632         /* Now setup per port private data */
 633         for (i = 0; i < serial->num_ports; i++) {
 634                 port = serial->port[i];
 635                 portdata = kzalloc(sizeof(*portdata), GFP_KERNEL);
 636                 if (!portdata) {
 637                         dbg("%s: kmalloc for sierra_port_private (%d) failed!.",
 638                                         __FUNCTION__, i);
 639                         return -ENOMEM;
 640                 }
 641                 spin_lock_init(&portdata->lock);
 642                 for (j = 0; j < N_IN_URB; j++) {
 643                         portdata->in_buffer[j] = kmalloc(IN_BUFLEN, GFP_KERNEL);
 644                         if (!portdata->in_buffer[j]) {
 645                                 for (--j; j >= 0; j--)
 646                                         kfree(portdata->in_buffer[j]);
 647                                 kfree(portdata);
 648                                 return -ENOMEM;
 649                         }
 650                 }
 651
 652                 usb_set_serial_port_data(port, portdata);
 653
 654                 /* initialize the in urbs */
 655                 for (j = 0; j < N_IN_URB; ++j) {
 656                         urb = usb_alloc_urb(0, GFP_KERNEL);
 657                         if (urb == NULL) {
 658                                 dbg("%s: alloc for in port failed.",
 659                                     __FUNCTION__);
 660                                 continue;
 661                         }
 662                         /* Fill URB using supplied data. */
 663                         usb_fill_bulk_urb(urb, serial->dev,
 664                                           usb_rcvbulkpipe(serial->dev,
 665                                                 port->bulk_in_endpointAddress),
 666                                           portdata->in_buffer[j], IN_BUFLEN,
 667                                           sierra_indat_callback, port);
 668                         portdata->in_urbs[j] = urb;
 669                 }
 670         }
 671
 672         return 0;
 673 }
 674
 675 static void sierra_shutdown(struct usb_serial *serial)
 676 {
 677         int i, j;
 678         struct usb_serial_port *port;
 679         struct sierra_port_private *portdata;
 680
 681         dbg("%s", __FUNCTION__);
 682
 683         for (i = 0; i < serial->num_ports; ++i) {
 684                 port = serial->port[i];
 685                 if (!port)
 686                         continue;
 687                 portdata = usb_get_serial_port_data(port);
 688                 if (!portdata)
 689                         continue;
 690
 691                 for (j = 0; j < N_IN_URB; j++) {
 692                         usb_kill_urb(portdata->in_urbs[j]);
 693                         usb_free_urb(portdata->in_urbs[j]);
 694                         kfree(portdata->in_buffer[j]);
 695                 }
 696                 kfree(portdata);
 697                 usb_set_serial_port_data(port, NULL);
 698         }
 699 }
 700
 701 static struct usb_serial_driver sierra_device = {
 702         .driver = {
 703                 .owner =        THIS_MODULE,
 704                 .name =         "sierra1",
 705         },
 706         .description       = "Sierra USB modem",
 707         .id_table          = id_table,
 708         .usb_driver        = &sierra_driver,
 709         .num_interrupt_in  = NUM_DONT_CARE,
 710         .num_bulk_in       = NUM_DONT_CARE,
 711         .num_bulk_out      = NUM_DONT_CARE,
 712         .calc_num_ports    = sierra_calc_num_ports,
 713         .probe             = sierra_probe,
 714         .open              = sierra_open,
 715         .close             = sierra_close,
 716         .write             = sierra_write,
 717         .write_room        = sierra_write_room,
 718         .chars_in_buffer   = sierra_chars_in_buffer,
 719         .throttle          = sierra_rx_throttle,
 720         .unthrottle        = sierra_rx_unthrottle,
 721         .ioctl             = sierra_ioctl,
 722         .set_termios       = sierra_set_termios,
 723         .break_ctl         = sierra_break_ctl,
 724         .tiocmget          = sierra_tiocmget,
 725         .tiocmset          = sierra_tiocmset,
 726         .attach            = sierra_startup,
 727         .shutdown          = sierra_shutdown,
 728         .read_int_callback = sierra_instat_callback,
 729 };
 730
 731 /* Functions used by new usb-serial code. */
 732 static int __init sierra_init(void)
 733 {
 734         int retval;
 735         retval = usb_serial_register(&sierra_device);
 736         if (retval)
 737                 goto failed_device_register;
 738
 739
 740         retval = usb_register(&sierra_driver);
 741         if (retval)
 742                 goto failed_driver_register;
 743
 744         info(DRIVER_DESC ": " DRIVER_VERSION);
 745
 746         return 0;
 747
 748 failed_driver_register:
 749         usb_serial_deregister(&sierra_device);
 750 failed_device_register:
 751         return retval;
 752 }
 753
 754 static void __exit sierra_exit(void)
 755 {
 756         usb_deregister (&sierra_driver);
 757         usb_serial_deregister(&sierra_device);
 758 }
 759
 760 module_init(sierra_init);
 761 module_exit(sierra_exit);
 762
 763 MODULE_AUTHOR(DRIVER_AUTHOR);
 764 MODULE_DESCRIPTION(DRIVER_DESC);
 765 MODULE_VERSION(DRIVER_VERSION);
 766 MODULE_LICENSE("GPL");
 767
 768 module_param(truinstall, bool, 0);
 769 MODULE_PARM_DESC(truinstall, "TRU-Install support");
 770
 771 module_param(nmea, bool, 0);
 772 MODULE_PARM_DESC(nmea, "NMEA streaming");
 773
 774 #ifdef CONFIG_USB_DEBUG
 775 module_param(debug, bool, S_IRUGO | S_IWUSR);
 776 MODULE_PARM_DESC(debug, "Debug messages");
 777 #endif
 778