drivers/usb/serial/kobil_sct.c

   1 /*
   2  *  KOBIL USB Smart Card Terminal Driver
   3  *
   4  *  Copyright (C) 2002  KOBIL Systems GmbH
   5  *  Author: Thomas Wahrenbruch
   6  *
   7  *  Contact: linuxusb@kobil.de
   8  *
   9  *  This program is largely derived from work by the linux-usb group
  10  *  and associated source files.  Please see the usb/serial files for
  11  *  individual credits and copyrights.
  12  *
  13  *  This program is free software; you can redistribute it and/or modify
  14  *  it under the terms of the GNU General Public License as published by
  15  *  the Free Software Foundation; either version 2 of the License, or
  16  *  (at your option) any later version.
  17  *
  18  *  Thanks to Greg Kroah-Hartman (greg@kroah.com) for his help and
  19  *  patience.
  20  *
  21  * Supported readers: USB TWIN, KAAN Standard Plus and SecOVID Reader Plus
  22  * (Adapter K), B1 Professional and KAAN Professional (Adapter B)
  23  *
  24  * (21/05/2004) tw
  25  *      Fix bug with P'n'P readers
  26  *
  27  * (28/05/2003) tw
  28  *      Add support for KAAN SIM
  29  *
  30  * (12/09/2002) tw
  31  *      Adapted to 2.5.
  32  *
  33  * (11/08/2002) tw
  34  *      Initial version.
  35  */
  36
  37
  38 #include <linux/kernel.h>
  39 #include <linux/errno.h>
  40 #include <linux/init.h>
  41 #include <linux/slab.h>
  42 #include <linux/tty.h>
  43 #include <linux/tty_driver.h>
  44 #include <linux/tty_flip.h>
  45 #include <linux/module.h>
  46 #include <linux/spinlock.h>
  47 #include <asm/uaccess.h>
  48 #include <linux/usb.h>
  49 #include <linux/usb/serial.h>
  50 #include <linux/ioctl.h>
  51 #include "kobil_sct.h"
  52
  53 static int debug;
  54
  55 /* Version Information */
  56 #define DRIVER_VERSION "21/05/2004"
  57 #define DRIVER_AUTHOR "KOBIL Systems GmbH - http://www.kobil.com"
  58 #define DRIVER_DESC "KOBIL USB Smart Card Terminal Driver (experimental)"
  59
  60 #define KOBIL_VENDOR_ID                 0x0D46
  61 #define KOBIL_ADAPTER_B_PRODUCT_ID      0x2011
  62 #define KOBIL_ADAPTER_K_PRODUCT_ID      0x2012
  63 #define KOBIL_USBTWIN_PRODUCT_ID        0x0078
  64 #define KOBIL_KAAN_SIM_PRODUCT_ID       0x0081
  65
  66 #define KOBIL_TIMEOUT           500
  67 #define KOBIL_BUF_LENGTH        300
  68
  69
  70 /* Function prototypes */
  71 static int  kobil_startup (struct usb_serial *serial);
  72 static void kobil_shutdown (struct usb_serial *serial);
  73 static int  kobil_open (struct usb_serial_port *port, struct file *filp);
  74 static void kobil_close (struct usb_serial_port *port, struct file *filp);
  75 static int  kobil_write (struct usb_serial_port *port,
  76                          const unsigned char *buf, int count);
  77 static int  kobil_write_room(struct usb_serial_port *port);
  78 static int  kobil_ioctl(struct usb_serial_port *port, struct file *file,
  79                         unsigned int cmd, unsigned long arg);
  80 static int  kobil_tiocmget(struct usb_serial_port *port, struct file *file);
  81 static int  kobil_tiocmset(struct usb_serial_port *port, struct file *file,
  82                            unsigned int set, unsigned int clear);
  83 static void kobil_read_int_callback( struct urb *urb );
  84 static void kobil_write_callback( struct urb *purb );
  85 static void kobil_set_termios(struct usb_serial_port *port, struct ktermios *old);
  86
  87
  88 static struct usb_device_id id_table [] = {
  89         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_B_PRODUCT_ID) },
  90         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_K_PRODUCT_ID) },
  91         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_USBTWIN_PRODUCT_ID) },
  92         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_KAAN_SIM_PRODUCT_ID) },
  93         { }                     /* Terminating entry */
  94 };
  95
  96
  97 MODULE_DEVICE_TABLE (usb, id_table);
  98
  99 static struct usb_driver kobil_driver = {
 100         .name =         "kobil",
 101         .probe =        usb_serial_probe,
 102         .disconnect =   usb_serial_disconnect,
 103         .id_table =     id_table,
 104         .no_dynamic_id =        1,
 105 };
 106
 107
 108 static struct usb_serial_driver kobil_device = {
 109         .driver = {
 110                 .owner =        THIS_MODULE,
 111                 .name =         "kobil",
 112         },
 113         .description =          "KOBIL USB smart card terminal",
 114         .usb_driver =           &kobil_driver,
 115         .id_table =             id_table,
 116         .num_ports =            1,
 117         .attach =               kobil_startup,
 118         .shutdown =             kobil_shutdown,
 119         .ioctl =                kobil_ioctl,
 120         .set_termios =          kobil_set_termios,
 121         .tiocmget =             kobil_tiocmget,
 122         .tiocmset =             kobil_tiocmset,
 123         .open =                 kobil_open,
 124         .close =                kobil_close,
 125         .write =                kobil_write,
 126         .write_room =           kobil_write_room,
 127         .read_int_callback =    kobil_read_int_callback,
 128 };
 129
 130
 131 struct kobil_private {
 132         int write_int_endpoint_address;
 133         int read_int_endpoint_address;
 134         unsigned char buf[KOBIL_BUF_LENGTH]; // buffer for the APDU to send
 135         int filled;  // index of the last char in buf
 136         int cur_pos; // index of the next char to send in buf
 137         __u16 device_type;
 138 };
 139
 140
 141 static int kobil_startup (struct usb_serial *serial)
 142 {
 143         int i;
 144         struct kobil_private *priv;
 145         struct usb_device *pdev;
 146         struct usb_host_config *actconfig;
 147         struct usb_interface *interface;
 148         struct usb_host_interface *altsetting;
 149         struct usb_host_endpoint *endpoint;
 150
 151         priv = kmalloc(sizeof(struct kobil_private), GFP_KERNEL);
 152         if (!priv){
 153                 return -ENOMEM;
 154         }
 155
 156         priv->filled = 0;
 157         priv->cur_pos = 0;
 158         priv->device_type = le16_to_cpu(serial->dev->descriptor.idProduct);
 159
 160         switch (priv->device_type){
 161         case KOBIL_ADAPTER_B_PRODUCT_ID:
 162                 printk(KERN_DEBUG "KOBIL B1 PRO / KAAN PRO detected\n");
 163                 break;
 164         case KOBIL_ADAPTER_K_PRODUCT_ID:
 165                 printk(KERN_DEBUG "KOBIL KAAN Standard Plus / SecOVID Reader Plus detected\n");
 166                 break;
 167         case KOBIL_USBTWIN_PRODUCT_ID:
 168                 printk(KERN_DEBUG "KOBIL USBTWIN detected\n");
 169                 break;
 170         case KOBIL_KAAN_SIM_PRODUCT_ID:
 171                 printk(KERN_DEBUG "KOBIL KAAN SIM detected\n");
 172                 break;
 173         }
 174         usb_set_serial_port_data(serial->port[0], priv);
 175
 176         // search for the necessary endpoints
 177         pdev = serial->dev;
 178         actconfig = pdev->actconfig;
 179         interface = actconfig->interface[0];
 180         altsetting = interface->cur_altsetting;
 181         endpoint = altsetting->endpoint;
 182
 183         for (i = 0; i < altsetting->desc.bNumEndpoints; i++) {
 184                 endpoint = &altsetting->endpoint[i];
 185                 if (usb_endpoint_is_int_out(&endpoint->desc)) {
 186                         dbg("%s Found interrupt out endpoint. Address: %d", __func__, endpoint->desc.bEndpointAddress);
 187                         priv->write_int_endpoint_address = endpoint->desc.bEndpointAddress;
 188                 }
 189                 if (usb_endpoint_is_int_in(&endpoint->desc)) {
 190                         dbg("%s Found interrupt in  endpoint. Address: %d", __func__, endpoint->desc.bEndpointAddress);
 191                         priv->read_int_endpoint_address = endpoint->desc.bEndpointAddress;
 192                 }
 193         }
 194         return 0;
 195 }
 196
 197
 198 static void kobil_shutdown (struct usb_serial *serial)
 199 {
 200         int i;
 201         dbg("%s - port %d", __func__, serial->port[0]->number);
 202
 203         for (i=0; i < serial->num_ports; ++i) {
 204                 while (serial->port[i]->open_count > 0) {
 205                         kobil_close (serial->port[i], NULL);
 206                 }
 207                 kfree(usb_get_serial_port_data(serial->port[i]));
 208                 usb_set_serial_port_data(serial->port[i], NULL);
 209         }
 210 }
 211
 212
 213 static int kobil_open (struct usb_serial_port *port, struct file *filp)
 214 {
 215         int result = 0;
 216         struct kobil_private *priv;
 217         unsigned char *transfer_buffer;
 218         int transfer_buffer_length = 8;
 219         int write_urb_transfer_buffer_length = 8;
 220
 221         dbg("%s - port %d", __func__, port->number);
 222         priv = usb_get_serial_port_data(port);
 223
 224         // someone sets the dev to 0 if the close method has been called
 225         port->interrupt_in_urb->dev = port->serial->dev;
 226
 227
 228         /* force low_latency on so that our tty_push actually forces
 229          * the data through, otherwise it is scheduled, and with high
 230          * data rates (like with OHCI) data can get lost.
 231          */
 232         port->tty->low_latency = 1;
 233
 234         // without this, every push_tty_char is echoed :-(
 235         port->tty->termios->c_lflag = 0;
 236         port->tty->termios->c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN | XCASE);
 237         port->tty->termios->c_iflag = IGNBRK | IGNPAR | IXOFF;
 238         port->tty->termios->c_oflag &= ~ONLCR; // do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D)
 239
 240         // allocate memory for transfer buffer
 241         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 242         if (! transfer_buffer) {
 243                 return -ENOMEM;
 244         }
 245
 246         // allocate write_urb
 247         if (!port->write_urb) {
 248                 dbg("%s - port %d  Allocating port->write_urb", __func__, port->number);
 249                 port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
 250                 if (!port->write_urb) {
 251                         dbg("%s - port %d usb_alloc_urb failed", __func__, port->number);
 252                         kfree(transfer_buffer);
 253                         return -ENOMEM;
 254                 }
 255         }
 256
 257         // allocate memory for write_urb transfer buffer
 258         port->write_urb->transfer_buffer = kmalloc(write_urb_transfer_buffer_length, GFP_KERNEL);
 259         if (! port->write_urb->transfer_buffer) {
 260                 kfree(transfer_buffer);
 261                 usb_free_urb(port->write_urb);
 262                 port->write_urb = NULL;
 263                 return -ENOMEM;
 264         }
 265
 266         // get hardware version
 267         result = usb_control_msg( port->serial->dev,
 268                                   usb_rcvctrlpipe(port->serial->dev, 0 ),
 269                                   SUSBCRequest_GetMisc,
 270                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 271                                   SUSBCR_MSC_GetHWVersion,
 272                                   0,
 273                                   transfer_buffer,
 274                                   transfer_buffer_length,
 275                                   KOBIL_TIMEOUT
 276                 );
 277         dbg("%s - port %d Send get_HW_version URB returns: %i", __func__, port->number, result);
 278         dbg("Harware version: %i.%i.%i", transfer_buffer[0], transfer_buffer[1], transfer_buffer[2] );
 279
 280         // get firmware version
 281         result = usb_control_msg( port->serial->dev,
 282                                   usb_rcvctrlpipe(port->serial->dev, 0 ),
 283                                   SUSBCRequest_GetMisc,
 284                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 285                                   SUSBCR_MSC_GetFWVersion,
 286                                   0,
 287                                   transfer_buffer,
 288                                   transfer_buffer_length,
 289                                   KOBIL_TIMEOUT
 290                 );
 291         dbg("%s - port %d Send get_FW_version URB returns: %i", __func__, port->number, result);
 292         dbg("Firmware version: %i.%i.%i", transfer_buffer[0], transfer_buffer[1], transfer_buffer[2] );
 293
 294         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
 295                 // Setting Baudrate, Parity and Stopbits
 296                 result = usb_control_msg( port->serial->dev,
 297                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 298                                           SUSBCRequest_SetBaudRateParityAndStopBits,
 299                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 300                                           SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity | SUSBCR_SPASB_1StopBit,
 301                                           0,
 302                                           transfer_buffer,
 303                                           0,
 304                                           KOBIL_TIMEOUT
 305                         );
 306                 dbg("%s - port %d Send set_baudrate URB returns: %i", __func__, port->number, result);
 307
 308                 // reset all queues
 309                 result = usb_control_msg( port->serial->dev,
 310                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 311                                           SUSBCRequest_Misc,
 312                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 313                                           SUSBCR_MSC_ResetAllQueues,
 314                                           0,
 315                                           transfer_buffer,
 316                                           0,
 317                                           KOBIL_TIMEOUT
 318                         );
 319                 dbg("%s - port %d Send reset_all_queues URB returns: %i", __func__, port->number, result);
 320         }
 321         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 322             priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 323                 // start reading (Adapter B 'cause PNP string)
 324                 result = usb_submit_urb( port->interrupt_in_urb, GFP_ATOMIC  );
 325                 dbg("%s - port %d Send read URB returns: %i", __func__, port->number, result);
 326         }
 327
 328         kfree(transfer_buffer);
 329         return 0;
 330 }
 331
 332
 333 static void kobil_close (struct usb_serial_port *port, struct file *filp)
 334 {
 335         dbg("%s - port %d", __func__, port->number);
 336
 337         if (port->write_urb) {
 338                 usb_kill_urb(port->write_urb);
 339                 usb_free_urb( port->write_urb );
 340                 port->write_urb = NULL;
 341         }
 342         usb_kill_urb(port->interrupt_in_urb);
 343 }
 344
 345
 346 static void kobil_read_int_callback(struct urb *urb)
 347 {
 348         int result;
 349         struct usb_serial_port *port = urb->context;
 350         struct tty_struct *tty;
 351         unsigned char *data = urb->transfer_buffer;
 352         int status = urb->status;
 353 //      char *dbg_data;
 354
 355         dbg("%s - port %d", __func__, port->number);
 356
 357         if (status) {
 358                 dbg("%s - port %d Read int status not zero: %d",
 359                     __func__, port->number, status);
 360                 return;
 361         }
 362
 363         tty = port->tty;
 364         if (urb->actual_length) {
 365
 366                 // BEGIN DEBUG
 367                 /*
 368                   dbg_data = kzalloc((3 *  purb->actual_length + 10) * sizeof(char), GFP_KERNEL);
 369                   if (! dbg_data) {
 370                   return;
 371                   }
 372                   for (i = 0; i < purb->actual_length; i++) {
 373                   sprintf(dbg_data +3*i, "%02X ", data[i]);
 374                   }
 375                   dbg(" <-- %s", dbg_data );
 376                   kfree(dbg_data);
 377                 */
 378                 // END DEBUG
 379
 380                 tty_buffer_request_room(tty, urb->actual_length);
 381                 tty_insert_flip_string(tty, data, urb->actual_length);
 382                 tty_flip_buffer_push(tty);
 383         }
 384
 385         // someone sets the dev to 0 if the close method has been called
 386         port->interrupt_in_urb->dev = port->serial->dev;
 387
 388         result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
 389         dbg("%s - port %d Send read URB returns: %i", __func__, port->number, result);
 390 }
 391
 392
 393 static void kobil_write_callback( struct urb *purb )
 394 {
 395 }
 396
 397
 398 static int kobil_write (struct usb_serial_port *port,
 399                         const unsigned char *buf, int count)
 400 {
 401         int length = 0;
 402         int result = 0;
 403         int todo = 0;
 404         struct kobil_private * priv;
 405
 406         if (count == 0) {
 407                 dbg("%s - port %d write request of 0 bytes", __func__, port->number);
 408                 return 0;
 409         }
 410
 411         priv = usb_get_serial_port_data(port);
 412
 413         if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
 414                 dbg("%s - port %d Error: write request bigger than buffer size", __func__, port->number);
 415                 return -ENOMEM;
 416         }
 417
 418         // Copy data to buffer
 419         memcpy (priv->buf + priv->filled, buf, count);
 420
 421         usb_serial_debug_data(debug, &port->dev, __func__, count, priv->buf + priv->filled);
 422
 423         priv->filled = priv->filled + count;
 424
 425
 426         // only send complete block. TWIN, KAAN SIM and adapter K use the same protocol.
 427         if ( ((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) ||
 428              ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4))) ) {
 429
 430                 // stop reading (except TWIN and KAAN SIM)
 431                 if ( (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) )
 432                         usb_kill_urb(port->interrupt_in_urb);
 433
 434                 todo = priv->filled - priv->cur_pos;
 435
 436                 while(todo > 0) {
 437                         // max 8 byte in one urb (endpoint size)
 438                         length = (todo < 8) ? todo : 8;
 439                         // copy data to transfer buffer
 440                         memcpy(port->write_urb->transfer_buffer, priv->buf + priv->cur_pos, length );
 441                         usb_fill_int_urb( port->write_urb,
 442                                           port->serial->dev,
 443                                           usb_sndintpipe(port->serial->dev, priv->write_int_endpoint_address),
 444                                           port->write_urb->transfer_buffer,
 445                                           length,
 446                                           kobil_write_callback,
 447                                           port,
 448                                           8
 449                                 );
 450
 451                         priv->cur_pos = priv->cur_pos + length;
 452                         result = usb_submit_urb( port->write_urb, GFP_NOIO );
 453                         dbg("%s - port %d Send write URB returns: %i", __func__, port->number, result);
 454                         todo = priv->filled - priv->cur_pos;
 455
 456                         if (todo > 0) {
 457                                 msleep(24);
 458                         }
 459
 460                 } // end while
 461
 462                 priv->filled = 0;
 463                 priv->cur_pos = 0;
 464
 465                 // someone sets the dev to 0 if the close method has been called
 466                 port->interrupt_in_urb->dev = port->serial->dev;
 467
 468                 // start reading (except TWIN and KAAN SIM)
 469                 if ( (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) ) {
 470                         // someone sets the dev to 0 if the close method has been called
 471                         port->interrupt_in_urb->dev = port->serial->dev;
 472
 473                         result = usb_submit_urb( port->interrupt_in_urb, GFP_NOIO );
 474                         dbg("%s - port %d Send read URB returns: %i", __func__, port->number, result);
 475                 }
 476         }
 477         return count;
 478 }
 479
 480
 481 static int kobil_write_room (struct usb_serial_port *port)
 482 {
 483         //dbg("%s - port %d", __func__, port->number);
 484         return 8;
 485 }
 486
 487
 488 static int kobil_tiocmget(struct usb_serial_port *port, struct file *file)
 489 {
 490         struct kobil_private * priv;
 491         int result;
 492         unsigned char *transfer_buffer;
 493         int transfer_buffer_length = 8;
 494
 495         priv = usb_get_serial_port_data(port);
 496         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
 497                 // This device doesn't support ioctl calls
 498                 return -EINVAL;
 499         }
 500
 501         // allocate memory for transfer buffer
 502         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 503         if (!transfer_buffer) {
 504                 return -ENOMEM;
 505         }
 506
 507         result = usb_control_msg( port->serial->dev,
 508                                   usb_rcvctrlpipe(port->serial->dev, 0 ),
 509                                   SUSBCRequest_GetStatusLineState,
 510                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 511                                   0,
 512                                   0,
 513                                   transfer_buffer,
 514                                   transfer_buffer_length,
 515                                   KOBIL_TIMEOUT);
 516
 517         dbg("%s - port %d Send get_status_line_state URB returns: %i. Statusline: %02x",
 518             __func__, port->number, result, transfer_buffer[0]);
 519
 520         result = 0;
 521         if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0)
 522                 result = TIOCM_DSR;
 523         kfree(transfer_buffer);
 524         return result;
 525 }
 526
 527 static int  kobil_tiocmset(struct usb_serial_port *port, struct file *file,
 528                            unsigned int set, unsigned int clear)
 529 {
 530         struct kobil_private * priv;
 531         int result;
 532         int dtr = 0;
 533         int rts = 0;
 534         unsigned char *transfer_buffer;
 535         int transfer_buffer_length = 8;
 536
 537         /* FIXME: locking ? */
 538         priv = usb_get_serial_port_data(port);
 539         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
 540                 // This device doesn't support ioctl calls
 541                 return -EINVAL;
 542         }
 543
 544         // allocate memory for transfer buffer
 545         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 546         if (! transfer_buffer) {
 547                 return -ENOMEM;
 548         }
 549
 550         if (set & TIOCM_RTS)
 551                 rts = 1;
 552         if (set & TIOCM_DTR)
 553                 dtr = 1;
 554         if (clear & TIOCM_RTS)
 555                 rts = 0;
 556         if (clear & TIOCM_DTR)
 557                 dtr = 0;
 558
 559         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
 560                 if (dtr != 0)
 561                         dbg("%s - port %d Setting DTR", __func__, port->number);
 562                 else
 563                         dbg("%s - port %d Clearing DTR", __func__, port->number);
 564                 result = usb_control_msg( port->serial->dev,
 565                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 566                                           SUSBCRequest_SetStatusLinesOrQueues,
 567                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 568                                           ((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
 569                                           0,
 570                                           transfer_buffer,
 571                                           0,
 572                                           KOBIL_TIMEOUT);
 573         } else {
 574                 if (rts != 0)
 575                         dbg("%s - port %d Setting RTS", __func__, port->number);
 576                 else
 577                         dbg("%s - port %d Clearing RTS", __func__, port->number);
 578                 result = usb_control_msg( port->serial->dev,
 579                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 580                                           SUSBCRequest_SetStatusLinesOrQueues,
 581                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 582                                           ((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
 583                                           0,
 584                                           transfer_buffer,
 585                                           0,
 586                                           KOBIL_TIMEOUT);
 587         }
 588         dbg("%s - port %d Send set_status_line URB returns: %i", __func__, port->number, result);
 589         kfree(transfer_buffer);
 590         return (result < 0) ? result : 0;
 591 }
 592
 593 static void kobil_set_termios(struct usb_serial_port *port, struct ktermios *old)
 594 {
 595         struct kobil_private * priv;
 596         int result;
 597         unsigned short urb_val = 0;
 598         int c_cflag = port->tty->termios->c_cflag;
 599         speed_t speed;
 600         void * settings;
 601
 602         priv = usb_get_serial_port_data(port);
 603         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)
 604                 // This device doesn't support ioctl calls
 605                 return;
 606
 607         switch (speed = tty_get_baud_rate(port->tty)) {
 608                 case 1200:
 609                         urb_val = SUSBCR_SBR_1200;
 610                         break;
 611                 default:
 612                         speed = 9600;
 613                 case 9600:
 614                         urb_val = SUSBCR_SBR_9600;
 615                         break;
 616         }
 617         urb_val |= (c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits : SUSBCR_SPASB_1StopBit;
 618
 619         settings = kzalloc(50, GFP_KERNEL);
 620         if (! settings)
 621                 return;
 622
 623         sprintf(settings, "%d ", speed);
 624
 625         if (c_cflag & PARENB) {
 626                 if  (c_cflag & PARODD) {
 627                         urb_val |= SUSBCR_SPASB_OddParity;
 628                         strcat(settings, "Odd Parity");
 629                 } else {
 630                         urb_val |= SUSBCR_SPASB_EvenParity;
 631                         strcat(settings, "Even Parity");
 632                 }
 633         } else {
 634                 urb_val |= SUSBCR_SPASB_NoParity;
 635                 strcat(settings, "No Parity");
 636         }
 637         port->tty->termios->c_cflag &= ~CMSPAR;
 638         tty_encode_baud_rate(port->tty, speed, speed);
 639
 640         result = usb_control_msg( port->serial->dev,
 641                                   usb_rcvctrlpipe(port->serial->dev, 0 ),
 642                                   SUSBCRequest_SetBaudRateParityAndStopBits,
 643                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 644                                   urb_val,
 645                                   0,
 646                                   settings,
 647                                   0,
 648                                   KOBIL_TIMEOUT
 649                 );
 650         kfree(settings);
 651 }
 652
 653 static int kobil_ioctl(struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg)
 654 {
 655         struct kobil_private * priv = usb_get_serial_port_data(port);
 656         unsigned char *transfer_buffer;
 657         int transfer_buffer_length = 8;
 658         int result;
 659
 660         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)
 661                 // This device doesn't support ioctl calls
 662                 return 0;
 663
 664         switch (cmd) {
 665         case TCFLSH:   // 0x540B
 666                 transfer_buffer = kmalloc(transfer_buffer_length, GFP_KERNEL);
 667                 if (! transfer_buffer)
 668                         return -ENOBUFS;
 669
 670                 result = usb_control_msg( port->serial->dev,
 671                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 672                                           SUSBCRequest_Misc,
 673                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 674                                           SUSBCR_MSC_ResetAllQueues,
 675                                           0,
 676                                           NULL,//transfer_buffer,
 677                                           0,
 678                                           KOBIL_TIMEOUT
 679                         );
 680
 681                 dbg("%s - port %d Send reset_all_queues (FLUSH) URB returns: %i", __func__, port->number, result);
 682                 kfree(transfer_buffer);
 683                 return (result < 0) ? -EFAULT : 0;
 684         default:
 685                 return -ENOIOCTLCMD;
 686         }
 687 }
 688
 689 static int __init kobil_init (void)
 690 {
 691         int retval;
 692         retval = usb_serial_register(&kobil_device);
 693         if (retval)
 694                 goto failed_usb_serial_register;
 695         retval = usb_register(&kobil_driver);
 696         if (retval)
 697                 goto failed_usb_register;
 698
 699         info(DRIVER_VERSION " " DRIVER_AUTHOR);
 700         info(DRIVER_DESC);
 701
 702         return 0;
 703 failed_usb_register:
 704         usb_serial_deregister(&kobil_device);
 705 failed_usb_serial_register:
 706         return retval;
 707 }
 708
 709
 710 static void __exit kobil_exit (void)
 711 {
 712         usb_deregister (&kobil_driver);
 713         usb_serial_deregister (&kobil_device);
 714 }
 715
 716 module_init(kobil_init);
 717 module_exit(kobil_exit);
 718
 719 MODULE_AUTHOR( DRIVER_AUTHOR );
 720 MODULE_DESCRIPTION( DRIVER_DESC );
 721 MODULE_LICENSE( "GPL" );
 722
 723 module_param(debug, bool, S_IRUGO | S_IWUSR);
 724 MODULE_PARM_DESC(debug, "Debug enabled or not");