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