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(0x03f0, 0x1e1d) }, /* HP hs2300 a.k.a MC8775 */
 168         { USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */
 169         { USB_DEVICE(0x1199, 0x6832) }, /* Sierra Wireless MC8780*/
 170         { USB_DEVICE(0x1199, 0x6833) }, /* Sierra Wireless MC8781*/
 171         { USB_DEVICE(0x1199, 0x6850) }, /* Sierra Wireless AirCard 880 */
 172         { USB_DEVICE(0x1199, 0x6851) }, /* Sierra Wireless AirCard 881 */
 173         { USB_DEVICE(0x1199, 0x6852) }, /* Sierra Wireless AirCard 880 E */
 174         { USB_DEVICE(0x1199, 0x6853) }, /* Sierra Wireless AirCard 881 E */
 175         { USB_DEVICE(0x1199, 0x6855) }, /* Sierra Wireless AirCard 880 U */
 176         { USB_DEVICE(0x1199, 0x6856) }, /* Sierra Wireless AirCard 881 U */
 177
 178         { USB_DEVICE(0x1199, 0x6468) }, /* Sierra Wireless MP3G - EVDO */
 179         { USB_DEVICE(0x1199, 0x6469) }, /* Sierra Wireless MP3G - UMTS/HSPA */
 180
 181         { USB_DEVICE(0x1199, 0x0112), .driver_info = DEVICE_1_PORT }, /* Sierra Wireless AirCard 580 */
 182         { USB_DEVICE(0x0F3D, 0x0112), .driver_info = DEVICE_1_PORT }, /* Airprime/Sierra PC 5220 */
 183
 184         { USB_DEVICE(0x1199, 0x0FFF), .driver_info = DEVICE_INSTALLER},
 185         { }
 186 };
 187 MODULE_DEVICE_TABLE(usb, id_table);
 188
 189 static struct usb_driver sierra_driver = {
 190         .name       = "sierra",
 191         .probe      = usb_serial_probe,
 192         .disconnect = usb_serial_disconnect,
 193         .id_table   = id_table,
 194         .no_dynamic_id =        1,
 195 };
 196
 197 struct sierra_port_private {
 198         spinlock_t lock;        /* lock the structure */
 199         int outstanding_urbs;   /* number of out urbs in flight */
 200
 201         /* Input endpoints and buffers for this port */
 202         struct urb *in_urbs[N_IN_URB];
 203         char *in_buffer[N_IN_URB];
 204
 205         /* Settings for the port */
 206         int rts_state;  /* Handshaking pins (outputs) */
 207         int dtr_state;
 208         int cts_state;  /* Handshaking pins (inputs) */
 209         int dsr_state;
 210         int dcd_state;
 211         int ri_state;
 212 };
 213
 214 static int sierra_send_setup(struct usb_serial_port *port)
 215 {
 216         struct usb_serial *serial = port->serial;
 217         struct sierra_port_private *portdata;
 218         __u16 interface = 0;
 219
 220         dbg("%s", __FUNCTION__);
 221
 222         portdata = usb_get_serial_port_data(port);
 223
 224         if (port->tty) {
 225                 int val = 0;
 226                 if (portdata->dtr_state)
 227                         val |= 0x01;
 228                 if (portdata->rts_state)
 229                         val |= 0x02;
 230
 231                 /* Determine which port is targeted */
 232                 if (port->bulk_out_endpointAddress == 2)
 233                         interface = 0;
 234                 else if (port->bulk_out_endpointAddress == 4)
 235                         interface = 1;
 236                 else if (port->bulk_out_endpointAddress == 5)
 237                         interface = 2;
 238
 239                 return usb_control_msg(serial->dev,
 240                                 usb_rcvctrlpipe(serial->dev, 0),
 241                                 0x22, 0x21, val, interface,
 242                                 NULL, 0, USB_CTRL_SET_TIMEOUT);
 243         }
 244
 245         return 0;
 246 }
 247
 248 static void sierra_rx_throttle(struct usb_serial_port *port)
 249 {
 250         dbg("%s", __FUNCTION__);
 251 }
 252
 253 static void sierra_rx_unthrottle(struct usb_serial_port *port)
 254 {
 255         dbg("%s", __FUNCTION__);
 256 }
 257
 258 static void sierra_break_ctl(struct usb_serial_port *port, int break_state)
 259 {
 260         /* Unfortunately, I don't know how to send a break */
 261         dbg("%s", __FUNCTION__);
 262 }
 263
 264 static void sierra_set_termios(struct usb_serial_port *port,
 265                         struct ktermios *old_termios)
 266 {
 267         dbg("%s", __FUNCTION__);
 268         tty_termios_copy_hw(port->tty->termios, old_termios);
 269         sierra_send_setup(port);
 270 }
 271
 272 static int sierra_tiocmget(struct usb_serial_port *port, struct file *file)
 273 {
 274         unsigned int value;
 275         struct sierra_port_private *portdata;
 276
 277         portdata = usb_get_serial_port_data(port);
 278
 279         value = ((portdata->rts_state) ? TIOCM_RTS : 0) |
 280                 ((portdata->dtr_state) ? TIOCM_DTR : 0) |
 281                 ((portdata->cts_state) ? TIOCM_CTS : 0) |
 282                 ((portdata->dsr_state) ? TIOCM_DSR : 0) |
 283                 ((portdata->dcd_state) ? TIOCM_CAR : 0) |
 284                 ((portdata->ri_state) ? TIOCM_RNG : 0);
 285
 286         return value;
 287 }
 288
 289 static int sierra_tiocmset(struct usb_serial_port *port, struct file *file,
 290                         unsigned int set, unsigned int clear)
 291 {
 292         struct sierra_port_private *portdata;
 293
 294         portdata = usb_get_serial_port_data(port);
 295
 296         if (set & TIOCM_RTS)
 297                 portdata->rts_state = 1;
 298         if (set & TIOCM_DTR)
 299                 portdata->dtr_state = 1;
 300
 301         if (clear & TIOCM_RTS)
 302                 portdata->rts_state = 0;
 303         if (clear & TIOCM_DTR)
 304                 portdata->dtr_state = 0;
 305         return sierra_send_setup(port);
 306 }
 307
 308 static int sierra_ioctl(struct usb_serial_port *port, struct file *file,
 309                         unsigned int cmd, unsigned long arg)
 310 {
 311         return -ENOIOCTLCMD;
 312 }
 313
 314 static void sierra_outdat_callback(struct urb *urb)
 315 {
 316         struct usb_serial_port *port = urb->context;
 317         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
 318         int status = urb->status;
 319         unsigned long flags;
 320
 321         dbg("%s - port %d", __FUNCTION__, port->number);
 322
 323         /* free up the transfer buffer, as usb_free_urb() does not do this */
 324         kfree(urb->transfer_buffer);
 325
 326         if (status)
 327                 dbg("%s - nonzero write bulk status received: %d",
 328                     __FUNCTION__, status);
 329
 330         spin_lock_irqsave(&portdata->lock, flags);
 331         --portdata->outstanding_urbs;
 332         spin_unlock_irqrestore(&portdata->lock, flags);
 333
 334         usb_serial_port_softint(port);
 335 }
 336
 337 /* Write */
 338 static int sierra_write(struct usb_serial_port *port,
 339                         const unsigned char *buf, int count)
 340 {
 341         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
 342         struct usb_serial *serial = port->serial;
 343         unsigned long flags;
 344         unsigned char *buffer;
 345         struct urb *urb;
 346         int status;
 347
 348         portdata = usb_get_serial_port_data(port);
 349
 350         dbg("%s: write (%d chars)", __FUNCTION__, count);
 351
 352         spin_lock_irqsave(&portdata->lock, flags);
 353         if (portdata->outstanding_urbs > N_OUT_URB) {
 354                 spin_unlock_irqrestore(&portdata->lock, flags);
 355                 dbg("%s - write limit hit\n", __FUNCTION__);
 356                 return 0;
 357         }
 358         portdata->outstanding_urbs++;
 359         spin_unlock_irqrestore(&portdata->lock, flags);
 360
 361         buffer = kmalloc(count, GFP_ATOMIC);
 362         if (!buffer) {
 363                 dev_err(&port->dev, "out of memory\n");
 364                 count = -ENOMEM;
 365                 goto error_no_buffer;
 366         }
 367
 368         urb = usb_alloc_urb(0, GFP_ATOMIC);
 369         if (!urb) {
 370                 dev_err(&port->dev, "no more free urbs\n");
 371                 count = -ENOMEM;
 372                 goto error_no_urb;
 373         }
 374
 375         memcpy(buffer, buf, count);
 376
 377         usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, buffer);
 378
 379         usb_fill_bulk_urb(urb, serial->dev,
 380                           usb_sndbulkpipe(serial->dev,
 381                                           port->bulk_out_endpointAddress),
 382                           buffer, count, sierra_outdat_callback, port);
 383
 384         /* send it down the pipe */
 385         status = usb_submit_urb(urb, GFP_ATOMIC);
 386         if (status) {
 387                 dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed "
 388                         "with status = %d\n", __FUNCTION__, status);
 389                 count = status;
 390                 goto error;
 391         }
 392
 393         /* we are done with this urb, so let the host driver
 394          * really free it when it is finished with it */
 395         usb_free_urb(urb);
 396
 397         return count;
 398 error:
 399         usb_free_urb(urb);
 400 error_no_urb:
 401         kfree(buffer);
 402 error_no_buffer:
 403         spin_lock_irqsave(&portdata->lock, flags);
 404         --portdata->outstanding_urbs;
 405         spin_unlock_irqrestore(&portdata->lock, flags);
 406         return count;
 407 }
 408
 409 static void sierra_indat_callback(struct urb *urb)
 410 {
 411         int err;
 412         int endpoint;
 413         struct usb_serial_port *port;
 414         struct tty_struct *tty;
 415         unsigned char *data = urb->transfer_buffer;
 416         int status = urb->status;
 417
 418         dbg("%s: %p", __FUNCTION__, urb);
 419
 420         endpoint = usb_pipeendpoint(urb->pipe);
 421         port = (struct usb_serial_port *) urb->context;
 422
 423         if (status) {
 424                 dbg("%s: nonzero status: %d on endpoint %02x.",
 425                     __FUNCTION__, status, endpoint);
 426         } else {
 427                 tty = port->tty;
 428                 if (urb->actual_length) {
 429                         tty_buffer_request_room(tty, urb->actual_length);
 430                         tty_insert_flip_string(tty, data, urb->actual_length);
 431                         tty_flip_buffer_push(tty);
 432                 } else {
 433                         dbg("%s: empty read urb received", __FUNCTION__);
 434                 }
 435
 436                 /* Resubmit urb so we continue receiving */
 437                 if (port->open_count && status != -ESHUTDOWN) {
 438                         err = usb_submit_urb(urb, GFP_ATOMIC);
 439                         if (err)
 440                                 dev_err(&port->dev, "resubmit read urb failed."
 441                                         "(%d)\n", err);
 442                 }
 443         }
 444         return;
 445 }
 446
 447 static void sierra_instat_callback(struct urb *urb)
 448 {
 449         int err;
 450         int status = urb->status;
 451         struct usb_serial_port *port = (struct usb_serial_port *) urb->context;
 452         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
 453         struct usb_serial *serial = port->serial;
 454
 455         dbg("%s", __FUNCTION__);
 456         dbg("%s: urb %p port %p has data %p", __FUNCTION__,urb,port,portdata);
 457
 458         if (status == 0) {
 459                 struct usb_ctrlrequest *req_pkt =
 460                                 (struct usb_ctrlrequest *)urb->transfer_buffer;
 461
 462                 if (!req_pkt) {
 463                         dbg("%s: NULL req_pkt\n", __FUNCTION__);
 464                         return;
 465                 }
 466                 if ((req_pkt->bRequestType == 0xA1) &&
 467                                 (req_pkt->bRequest == 0x20)) {
 468                         int old_dcd_state;
 469                         unsigned char signals = *((unsigned char *)
 470                                         urb->transfer_buffer +
 471                                         sizeof(struct usb_ctrlrequest));
 472
 473                         dbg("%s: signal x%x", __FUNCTION__, signals);
 474
 475                         old_dcd_state = portdata->dcd_state;
 476                         portdata->cts_state = 1;
 477                         portdata->dcd_state = ((signals & 0x01) ? 1 : 0);
 478                         portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
 479                         portdata->ri_state = ((signals & 0x08) ? 1 : 0);
 480
 481                         if (port->tty && !C_CLOCAL(port->tty) &&
 482                                         old_dcd_state && !portdata->dcd_state)
 483                                 tty_hangup(port->tty);
 484                 } else {
 485                         dbg("%s: type %x req %x", __FUNCTION__,
 486                                 req_pkt->bRequestType,req_pkt->bRequest);
 487                 }
 488         } else
 489                 dbg("%s: error %d", __FUNCTION__, status);
 490
 491         /* Resubmit urb so we continue receiving IRQ data */
 492         if (status != -ESHUTDOWN) {
 493                 urb->dev = serial->dev;
 494                 err = usb_submit_urb(urb, GFP_ATOMIC);
 495                 if (err)
 496                         dbg("%s: resubmit intr urb failed. (%d)",
 497                                 __FUNCTION__, err);
 498         }
 499 }
 500
 501 static int sierra_write_room(struct usb_serial_port *port)
 502 {
 503         struct sierra_port_private *portdata = usb_get_serial_port_data(port);
 504         unsigned long flags;
 505
 506         dbg("%s - port %d", __FUNCTION__, port->number);
 507
 508         /* try to give a good number back based on if we have any free urbs at
 509          * this point in time */
 510         spin_lock_irqsave(&portdata->lock, flags);
 511         if (portdata->outstanding_urbs > N_OUT_URB * 2 / 3) {
 512                 spin_unlock_irqrestore(&portdata->lock, flags);
 513                 dbg("%s - write limit hit\n", __FUNCTION__);
 514                 return 0;
 515         }
 516         spin_unlock_irqrestore(&portdata->lock, flags);
 517
 518         return 2048;
 519 }
 520
 521 static int sierra_chars_in_buffer(struct usb_serial_port *port)
 522 {
 523         dbg("%s - port %d", __FUNCTION__, port->number);
 524
 525         /*
 526          * We can't really account for how much data we
 527          * have sent out, but hasn't made it through to the
 528          * device as we can't see the backend here, so just
 529          * tell the tty layer that everything is flushed.
 530          */
 531         return 0;
 532 }
 533
 534 static int sierra_open(struct usb_serial_port *port, struct file *filp)
 535 {
 536         struct sierra_port_private *portdata;
 537         struct usb_serial *serial = port->serial;
 538         int i;
 539         struct urb *urb;
 540         int result;
 541
 542         portdata = usb_get_serial_port_data(port);
 543
 544         dbg("%s", __FUNCTION__);
 545
 546         /* Set some sane defaults */
 547         portdata->rts_state = 1;
 548         portdata->dtr_state = 1;
 549
 550         /* Reset low level data toggle and start reading from endpoints */
 551         for (i = 0; i < N_IN_URB; i++) {
 552                 urb = portdata->in_urbs[i];
 553                 if (!urb)
 554                         continue;
 555                 if (urb->dev != serial->dev) {
 556                         dbg("%s: dev %p != %p", __FUNCTION__,
 557                                 urb->dev, serial->dev);
 558                         continue;
 559                 }
 560
 561                 /*
 562                  * make sure endpoint data toggle is synchronized with the
 563                  * device
 564                  */
 565                 usb_clear_halt(urb->dev, urb->pipe);
 566
 567                 result = usb_submit_urb(urb, GFP_KERNEL);
 568                 if (result) {
 569                         dev_err(&port->dev, "submit urb %d failed (%d) %d\n",
 570                                 i, result, urb->transfer_buffer_length);
 571                 }
 572         }
 573
 574         port->tty->low_latency = 1;
 575
 576         sierra_send_setup(port);
 577
 578         /* start up the interrupt endpoint if we have one */
 579         if (port->interrupt_in_urb) {
 580                 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
 581                 if (result)
 582                         dev_err(&port->dev, "submit irq_in urb failed %d\n",
 583                                 result);
 584         }
 585         return 0;
 586 }
 587
 588 static void sierra_close(struct usb_serial_port *port, struct file *filp)
 589 {
 590         int i;
 591         struct usb_serial *serial = port->serial;
 592         struct sierra_port_private *portdata;
 593
 594         dbg("%s", __FUNCTION__);
 595         portdata = usb_get_serial_port_data(port);
 596
 597         portdata->rts_state = 0;
 598         portdata->dtr_state = 0;
 599
 600         if (serial->dev) {
 601                 mutex_lock(&serial->disc_mutex);
 602                 if (!serial->disconnected)
 603                         sierra_send_setup(port);
 604                 mutex_unlock(&serial->disc_mutex);
 605
 606                 /* Stop reading/writing urbs */
 607                 for (i = 0; i < N_IN_URB; i++)
 608                         usb_kill_urb(portdata->in_urbs[i]);
 609         }
 610
 611         usb_kill_urb(port->interrupt_in_urb);
 612
 613         port->tty = NULL;
 614 }
 615
 616 static int sierra_startup(struct usb_serial *serial)
 617 {
 618         struct usb_serial_port *port;
 619         struct sierra_port_private *portdata;
 620         struct urb *urb;
 621         int i;
 622         int j;
 623
 624         dbg("%s", __FUNCTION__);
 625
 626         /* Set Device mode to D0 */
 627         sierra_set_power_state(serial->dev, 0x0000);
 628
 629         /* Check NMEA and set */
 630         if (nmea)
 631                 sierra_vsc_set_nmea(serial->dev, 1);
 632
 633         /* Now setup per port private data */
 634         for (i = 0; i < serial->num_ports; i++) {
 635                 port = serial->port[i];
 636                 portdata = kzalloc(sizeof(*portdata), GFP_KERNEL);
 637                 if (!portdata) {
 638                         dbg("%s: kmalloc for sierra_port_private (%d) failed!.",
 639                                         __FUNCTION__, i);
 640                         return -ENOMEM;
 641                 }
 642                 spin_lock_init(&portdata->lock);
 643                 for (j = 0; j < N_IN_URB; j++) {
 644                         portdata->in_buffer[j] = kmalloc(IN_BUFLEN, GFP_KERNEL);
 645                         if (!portdata->in_buffer[j]) {
 646                                 for (--j; j >= 0; j--)
 647                                         kfree(portdata->in_buffer[j]);
 648                                 kfree(portdata);
 649                                 return -ENOMEM;
 650                         }
 651                 }
 652
 653                 usb_set_serial_port_data(port, portdata);
 654
 655                 /* initialize the in urbs */
 656                 for (j = 0; j < N_IN_URB; ++j) {
 657                         urb = usb_alloc_urb(0, GFP_KERNEL);
 658                         if (urb == NULL) {
 659                                 dbg("%s: alloc for in port failed.",
 660                                     __FUNCTION__);
 661                                 continue;
 662                         }
 663                         /* Fill URB using supplied data. */
 664                         usb_fill_bulk_urb(urb, serial->dev,
 665                                           usb_rcvbulkpipe(serial->dev,
 666                                                 port->bulk_in_endpointAddress),
 667                                           portdata->in_buffer[j], IN_BUFLEN,
 668                                           sierra_indat_callback, port);
 669                         portdata->in_urbs[j] = urb;
 670                 }
 671         }
 672
 673         return 0;
 674 }
 675
 676 static void sierra_shutdown(struct usb_serial *serial)
 677 {
 678         int i, j;
 679         struct usb_serial_port *port;
 680         struct sierra_port_private *portdata;
 681
 682         dbg("%s", __FUNCTION__);
 683
 684         for (i = 0; i < serial->num_ports; ++i) {
 685                 port = serial->port[i];
 686                 if (!port)
 687                         continue;
 688                 portdata = usb_get_serial_port_data(port);
 689                 if (!portdata)
 690                         continue;
 691
 692                 for (j = 0; j < N_IN_URB; j++) {
 693                         usb_kill_urb(portdata->in_urbs[j]);
 694                         usb_free_urb(portdata->in_urbs[j]);
 695                         kfree(portdata->in_buffer[j]);
 696                 }
 697                 kfree(portdata);
 698                 usb_set_serial_port_data(port, NULL);
 699         }
 700 }
 701
 702 static struct usb_serial_driver sierra_device = {
 703         .driver = {
 704                 .owner =        THIS_MODULE,
 705                 .name =         "sierra1",
 706         },
 707         .description       = "Sierra USB modem",
 708         .id_table          = id_table,
 709         .usb_driver        = &sierra_driver,
 710         .num_interrupt_in  = NUM_DONT_CARE,
 711         .num_bulk_in       = NUM_DONT_CARE,
 712         .num_bulk_out      = NUM_DONT_CARE,
 713         .calc_num_ports    = sierra_calc_num_ports,
 714         .probe             = sierra_probe,
 715         .open              = sierra_open,
 716         .close             = sierra_close,
 717         .write             = sierra_write,
 718         .write_room        = sierra_write_room,
 719         .chars_in_buffer   = sierra_chars_in_buffer,
 720         .throttle          = sierra_rx_throttle,
 721         .unthrottle        = sierra_rx_unthrottle,
 722         .ioctl             = sierra_ioctl,
 723         .set_termios       = sierra_set_termios,
 724         .break_ctl         = sierra_break_ctl,
 725         .tiocmget          = sierra_tiocmget,
 726         .tiocmset          = sierra_tiocmset,
 727         .attach            = sierra_startup,
 728         .shutdown          = sierra_shutdown,
 729         .read_int_callback = sierra_instat_callback,
 730 };
 731
 732 /* Functions used by new usb-serial code. */
 733 static int __init sierra_init(void)
 734 {
 735         int retval;
 736         retval = usb_serial_register(&sierra_device);
 737         if (retval)
 738                 goto failed_device_register;
 739
 740
 741         retval = usb_register(&sierra_driver);
 742         if (retval)
 743                 goto failed_driver_register;
 744
 745         info(DRIVER_DESC ": " DRIVER_VERSION);
 746
 747         return 0;
 748
 749 failed_driver_register:
 750         usb_serial_deregister(&sierra_device);
 751 failed_device_register:
 752         return retval;
 753 }
 754
 755 static void __exit sierra_exit(void)
 756 {
 757         usb_deregister (&sierra_driver);
 758         usb_serial_deregister(&sierra_device);
 759 }
 760
 761 module_init(sierra_init);
 762 module_exit(sierra_exit);
 763
 764 MODULE_AUTHOR(DRIVER_AUTHOR);
 765 MODULE_DESCRIPTION(DRIVER_DESC);
 766 MODULE_VERSION(DRIVER_VERSION);
 767 MODULE_LICENSE("GPL");
 768
 769 module_param(truinstall, bool, 0);
 770 MODULE_PARM_DESC(truinstall, "TRU-Install support");
 771
 772 module_param(nmea, bool, 0);
 773 MODULE_PARM_DESC(nmea, "NMEA streaming");
 774
 775 #ifdef CONFIG_USB_DEBUG
 776 module_param(debug, bool, S_IRUGO | S_IWUSR);
 777 MODULE_PARM_DESC(debug, "Debug messages");
 778 #endif
 779