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  * (28/05/2003) tw
  25  *      Add support for KAAN SIM
  26  *
  27  * (12/09/2002) tw
  28  *      Adapted to 2.5.
  29  *
  30  * (11/08/2002) tw
  31  *      Initial version.
  32  */
  33
  34
  35 #include <linux/config.h>
  36 #include <linux/kernel.h>
  37 #include <linux/errno.h>
  38 #include <linux/init.h>
  39 #include <linux/slab.h>
  40 #include <linux/tty.h>
  41 #include <linux/tty_driver.h>
  42 #include <linux/tty_flip.h>
  43 #include <linux/module.h>
  44 #include <linux/spinlock.h>
  45 #include <asm/uaccess.h>
  46 #include <linux/usb.h>
  47 #include <linux/ioctl.h>
  48
  49
  50 #include "kobil_sct.h"
  51 //#include "../core/usb-debug.c"
  52
  53 #ifdef CONFIG_USB_SERIAL_DEBUG
  54         static int debug = 1;
  55 #else
  56         static int debug;
  57 #endif
  58
  59 #include "usb-serial.h"
  60
  61 /* Version Information */
  62 #define DRIVER_VERSION "28/05/2003"
  63 #define DRIVER_AUTHOR "KOBIL Systems GmbH - http://www.kobil.com"
  64 #define DRIVER_DESC "KOBIL USB Smart Card Terminal Driver (experimental)"
  65
  66 #define KOBIL_VENDOR_ID                 0x0D46
  67 #define KOBIL_ADAPTER_B_PRODUCT_ID      0x2011
  68 #define KOBIL_ADAPTER_K_PRODUCT_ID      0x2012
  69 #define KOBIL_USBTWIN_PRODUCT_ID        0x0078
  70 #define KOBIL_KAAN_SIM_PRODUCT_ID       0x0081
  71
  72 #define KOBIL_TIMEOUT           500
  73 #define KOBIL_BUF_LENGTH        300
  74
  75
  76 /* Function prototypes */
  77 static int  kobil_startup (struct usb_serial *serial);
  78 static void kobil_shutdown (struct usb_serial *serial);
  79 static int  kobil_open (struct usb_serial_port *port, struct file *filp);
  80 static void kobil_close (struct usb_serial_port *port, struct file *filp);
  81 static int  kobil_write (struct usb_serial_port *port, int from_user,
  82                          const unsigned char *buf, int count);
  83 static int  kobil_write_room(struct usb_serial_port *port);
  84 static int  kobil_ioctl(struct usb_serial_port *port, struct file *file,
  85                         unsigned int cmd, unsigned long arg);
  86 static int  kobil_tiocmget(struct usb_serial_port *port, struct file *file);
  87 static int  kobil_tiocmset(struct usb_serial_port *port, struct file *file,
  88                            unsigned int set, unsigned int clear);
  89 static void kobil_read_int_callback( struct urb *urb, struct pt_regs *regs );
  90 static void kobil_write_callback( struct urb *purb, struct pt_regs *regs );
  91
  92
  93 static struct usb_device_id id_table [] = {
  94         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_B_PRODUCT_ID) },
  95         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_K_PRODUCT_ID) },
  96         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_USBTWIN_PRODUCT_ID) },
  97         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_KAAN_SIM_PRODUCT_ID) },
  98         { }                     /* Terminating entry */
  99 };
 100
 101
 102 MODULE_DEVICE_TABLE (usb, id_table);
 103
 104 static struct usb_driver kobil_driver = {
 105         .owner =        THIS_MODULE,
 106         .name =         "kobil",
 107         .probe =        usb_serial_probe,
 108         .disconnect =   usb_serial_disconnect,
 109         .id_table =     id_table,
 110 };
 111
 112
 113 struct usb_serial_device_type kobil_device = {
 114         .owner =                THIS_MODULE,
 115         .name =                 "KOBIL USB smart card terminal",
 116         .id_table =             id_table,
 117         .num_interrupt_in =     NUM_DONT_CARE,
 118         .num_bulk_in =          0,
 119         .num_bulk_out =         0,
 120         .num_ports =            1,
 121         .attach =               kobil_startup,
 122         .shutdown =             kobil_shutdown,
 123         .ioctl =                kobil_ioctl,
 124         .tiocmget =             kobil_tiocmget,
 125         .tiocmset =             kobil_tiocmset,
 126         .open =                 kobil_open,
 127         .close =                kobil_close,
 128         .write =                kobil_write,
 129         .write_room =           kobil_write_room,
 130         .read_int_callback =    kobil_read_int_callback,
 131 };
 132
 133
 134 struct kobil_private {
 135         int write_int_endpoint_address;
 136         int read_int_endpoint_address;
 137         unsigned char buf[KOBIL_BUF_LENGTH]; // buffer for the APDU to send
 138         int filled;  // index of the last char in buf
 139         int cur_pos; // index of the next char to send in buf
 140         __u16 device_type;
 141         int line_state;
 142         struct termios internal_termios;
 143 };
 144
 145
 146 static int kobil_startup (struct usb_serial *serial)
 147 {
 148         int i;
 149         struct kobil_private *priv;
 150         struct usb_device *pdev;
 151         struct usb_host_config *actconfig;
 152         struct usb_interface *interface;
 153         struct usb_host_interface *altsetting;
 154         struct usb_host_endpoint *endpoint;
 155
 156         priv = kmalloc(sizeof(struct kobil_private), GFP_KERNEL);
 157         if (!priv){
 158                 return -ENOMEM;
 159         }
 160
 161         priv->filled = 0;
 162         priv->cur_pos = 0;
 163         priv->device_type = serial->product;
 164         priv->line_state = 0;
 165
 166         switch (priv->device_type){
 167         case KOBIL_ADAPTER_B_PRODUCT_ID:
 168                 printk(KERN_DEBUG "KOBIL B1 PRO / KAAN PRO detected\n");
 169                 break;
 170         case KOBIL_ADAPTER_K_PRODUCT_ID:
 171                 printk(KERN_DEBUG "KOBIL KAAN Standard Plus / SecOVID Reader Plus detected\n");
 172                 break;
 173         case KOBIL_USBTWIN_PRODUCT_ID:
 174                 printk(KERN_DEBUG "KOBIL USBTWIN detected\n");
 175                 break;
 176         case KOBIL_KAAN_SIM_PRODUCT_ID:
 177                 printk(KERN_DEBUG "KOBIL KAAN SIM detected\n");
 178                 break;
 179         }
 180         usb_set_serial_port_data(serial->port[0], priv);
 181
 182         // search for the necessary endpoints
 183         pdev = serial->dev;
 184         actconfig = pdev->actconfig;
 185         interface = actconfig->interface[0];
 186         altsetting = interface->altsetting;
 187         endpoint = altsetting->endpoint;
 188
 189         for (i = 0; i < altsetting->desc.bNumEndpoints; i++) {
 190                 endpoint = &altsetting->endpoint[i];
 191                 if (((endpoint->desc.bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) &&
 192                     ((endpoint->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)) {
 193                         dbg("%s Found interrupt out endpoint. Address: %d", __FUNCTION__, endpoint->desc.bEndpointAddress);
 194                         priv->write_int_endpoint_address = endpoint->desc.bEndpointAddress;
 195                 }
 196                 if (((endpoint->desc.bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) &&
 197                     ((endpoint->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)) {
 198                         dbg("%s Found interrupt in  endpoint. Address: %d", __FUNCTION__, endpoint->desc.bEndpointAddress);
 199                         priv->read_int_endpoint_address = endpoint->desc.bEndpointAddress;
 200                 }
 201         }
 202         return 0;
 203 }
 204
 205
 206 static void kobil_shutdown (struct usb_serial *serial)
 207 {
 208         int i;
 209         dbg("%s - port %d", __FUNCTION__, serial->port[0]->number);
 210
 211         for (i=0; i < serial->num_ports; ++i) {
 212                 while (serial->port[i]->open_count > 0) {
 213                         kobil_close (serial->port[i], NULL);
 214                 }
 215                 kfree(usb_get_serial_port_data(serial->port[i]));
 216                 usb_set_serial_port_data(serial->port[i], NULL);
 217         }
 218 }
 219
 220
 221 static int kobil_open (struct usb_serial_port *port, struct file *filp)
 222 {
 223         int i, result = 0;
 224         struct kobil_private *priv;
 225         unsigned char *transfer_buffer;
 226         int transfer_buffer_length = 8;
 227         int write_urb_transfer_buffer_length = 8;
 228
 229         dbg("%s - port %d", __FUNCTION__, port->number);
 230         priv = usb_get_serial_port_data(port);
 231         priv->line_state = 0;
 232
 233         if (port_paranoia_check (port, __FUNCTION__))
 234                 return -ENODEV;
 235
 236         // someone sets the dev to 0 if the close method has been called
 237         port->interrupt_in_urb->dev = port->serial->dev;
 238
 239
 240         /* force low_latency on so that our tty_push actually forces
 241          * the data through, otherwise it is scheduled, and with high
 242          * data rates (like with OHCI) data can get lost.
 243          */
 244         port->tty->low_latency = 1;
 245
 246         // without this, every push_tty_char is echoed :-(
 247         port->tty->termios->c_lflag = 0;
 248         port->tty->termios->c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN | XCASE);
 249         port->tty->termios->c_iflag = IGNBRK | IGNPAR | IXOFF;
 250         port->tty->termios->c_oflag &= ~ONLCR; // do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D)
 251
 252         // set up internal termios structure
 253         priv->internal_termios.c_iflag = port->tty->termios->c_iflag;
 254         priv->internal_termios.c_oflag = port->tty->termios->c_oflag;
 255         priv->internal_termios.c_cflag = port->tty->termios->c_cflag;
 256         priv->internal_termios.c_lflag = port->tty->termios->c_lflag;
 257
 258         for (i=0; i<NCCS; i++) {
 259                 priv->internal_termios.c_cc[i] = port->tty->termios->c_cc[i];
 260         }
 261
 262         // allocate memory for transfer buffer
 263         transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);
 264         if (! transfer_buffer) {
 265                 return -ENOMEM;
 266         } else {
 267                 memset(transfer_buffer, 0, transfer_buffer_length);
 268         }
 269
 270         // allocate write_urb
 271         if (!port->write_urb) {
 272                 dbg("%s - port %d  Allocating port->write_urb", __FUNCTION__, port->number);
 273                 port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
 274                 if (!port->write_urb) {
 275                         dbg("%s - port %d usb_alloc_urb failed", __FUNCTION__, port->number);
 276                         kfree(transfer_buffer);
 277                         return -ENOMEM;
 278                 }
 279         }
 280
 281         // allocate memory for write_urb transfer buffer
 282         port->write_urb->transfer_buffer = (unsigned char *) kmalloc(write_urb_transfer_buffer_length, GFP_KERNEL);
 283         if (! port->write_urb->transfer_buffer) {
 284                 kfree(transfer_buffer);
 285                 usb_free_urb(port->write_urb);
 286                 port->write_urb = NULL;
 287                 return -ENOMEM;
 288         }
 289
 290         // get hardware version
 291         result = usb_control_msg( port->serial->dev,
 292                                   usb_rcvctrlpipe(port->serial->dev, 0 ),
 293                                   SUSBCRequest_GetMisc,
 294                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 295                                   SUSBCR_MSC_GetHWVersion,
 296                                   0,
 297                                   transfer_buffer,
 298                                   transfer_buffer_length,
 299                                   KOBIL_TIMEOUT
 300                 );
 301         dbg("%s - port %d Send get_HW_version URB returns: %i", __FUNCTION__, port->number, result);
 302         dbg("Harware version: %i.%i.%i", transfer_buffer[0], transfer_buffer[1], transfer_buffer[2] );
 303
 304         // get firmware version
 305         result = usb_control_msg( port->serial->dev,
 306                                   usb_rcvctrlpipe(port->serial->dev, 0 ),
 307                                   SUSBCRequest_GetMisc,
 308                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 309                                   SUSBCR_MSC_GetFWVersion,
 310                                   0,
 311                                   transfer_buffer,
 312                                   transfer_buffer_length,
 313                                   KOBIL_TIMEOUT
 314                 );
 315         dbg("%s - port %d Send get_FW_version URB returns: %i", __FUNCTION__, port->number, result);
 316         dbg("Firmware version: %i.%i.%i", transfer_buffer[0], transfer_buffer[1], transfer_buffer[2] );
 317
 318         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
 319                 // Setting Baudrate, Parity and Stopbits
 320                 result = usb_control_msg( port->serial->dev,
 321                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 322                                           SUSBCRequest_SetBaudRateParityAndStopBits,
 323                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 324                                           SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity | SUSBCR_SPASB_1StopBit,
 325                                           0,
 326                                           transfer_buffer,
 327                                           0,
 328                                           KOBIL_TIMEOUT
 329                         );
 330                 dbg("%s - port %d Send set_baudrate URB returns: %i", __FUNCTION__, port->number, result);
 331
 332                 // reset all queues
 333                 result = usb_control_msg( port->serial->dev,
 334                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 335                                           SUSBCRequest_Misc,
 336                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 337                                           SUSBCR_MSC_ResetAllQueues,
 338                                           0,
 339                                           transfer_buffer,
 340                                           0,
 341                                           KOBIL_TIMEOUT
 342                         );
 343                 dbg("%s - port %d Send reset_all_queues URB returns: %i", __FUNCTION__, port->number, result);
 344         }
 345
 346         kfree(transfer_buffer);
 347         return 0;
 348 }
 349
 350
 351 static void kobil_close (struct usb_serial_port *port, struct file *filp)
 352 {
 353         dbg("%s - port %d", __FUNCTION__, port->number);
 354
 355         if (port->write_urb){
 356                 usb_unlink_urb( port->write_urb );
 357                 usb_free_urb( port->write_urb );
 358                 port->write_urb = 0;
 359         }
 360         if (port->interrupt_in_urb){
 361                 usb_unlink_urb (port->interrupt_in_urb);
 362         }
 363 }
 364
 365
 366 static void kobil_read_int_callback( struct urb *purb, struct pt_regs *regs)
 367 {
 368         int i;
 369         int result;
 370         struct usb_serial_port *port = (struct usb_serial_port *) purb->context;
 371         struct tty_struct *tty;
 372         unsigned char *data = purb->transfer_buffer;
 373 //      char *dbg_data;
 374
 375         dbg("%s - port %d", __FUNCTION__, port->number);
 376
 377         if (purb->status) {
 378                 dbg("%s - port %d Read int status not zero: %d", __FUNCTION__, port->number, purb->status);
 379                 return;
 380         }
 381
 382         tty = port->tty;
 383         if (purb->actual_length) {
 384
 385                 // BEGIN DEBUG
 386                 /*
 387                   dbg_data = (unsigned char *) kmalloc((3 *  purb->actual_length + 10) * sizeof(char), GFP_KERNEL);
 388                   if (! dbg_data) {
 389                   return;
 390                   }
 391                   memset(dbg_data, 0, (3 *  purb->actual_length + 10));
 392                   for (i = 0; i < purb->actual_length; i++) {
 393                   sprintf(dbg_data +3*i, "%02X ", data[i]);
 394                   }
 395                   dbg(" <-- %s", dbg_data );
 396                   kfree(dbg_data);
 397                 */
 398                 // END DEBUG
 399
 400                 for (i = 0; i < purb->actual_length; ++i) {
 401                         // if we insert more than TTY_FLIPBUF_SIZE characters, we drop them.
 402                         if(tty->flip.count >= TTY_FLIPBUF_SIZE) {
 403                                 tty_flip_buffer_push(tty);
 404                         }
 405                         // this doesn't actually push the data through unless tty->low_latency is set
 406                         tty_insert_flip_char(tty, data[i], 0);
 407                 }
 408                 tty_flip_buffer_push(tty);
 409         }
 410
 411         // someone sets the dev to 0 if the close method has been called
 412         port->interrupt_in_urb->dev = port->serial->dev;
 413
 414         result = usb_submit_urb( port->interrupt_in_urb, GFP_ATOMIC );
 415         dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
 416 }
 417
 418
 419 static void kobil_write_callback( struct urb *purb, struct pt_regs *regs )
 420 {
 421 }
 422
 423
 424 static int kobil_write (struct usb_serial_port *port, int from_user,
 425                         const unsigned char *buf, int count)
 426 {
 427         int length = 0;
 428         int result = 0;
 429         int todo = 0;
 430         struct kobil_private * priv;
 431
 432         if (count == 0) {
 433                 dbg("%s - port %d write request of 0 bytes", __FUNCTION__, port->number);
 434                 return 0;
 435         }
 436
 437         priv = usb_get_serial_port_data(port);
 438
 439         if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
 440                 dbg("%s - port %d Error: write request bigger than buffer size", __FUNCTION__, port->number);
 441                 return -ENOMEM;
 442         }
 443
 444         // Copy data to buffer
 445         if (from_user) {
 446                 if (copy_from_user(priv->buf + priv->filled, buf, count)) {
 447                         return -EFAULT;
 448                 }
 449         } else {
 450                 memcpy (priv->buf + priv->filled, buf, count);
 451         }
 452
 453         usb_serial_debug_data (__FILE__, __FUNCTION__, count, priv->buf + priv->filled);
 454
 455         priv->filled = priv->filled + count;
 456
 457
 458         // only send complete block. TWIN, KAAN SIM and adapter K use the same protocol.
 459         if ( ((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) ||
 460              ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4))) ) {
 461
 462                 todo = priv->filled - priv->cur_pos;
 463
 464                 while(todo > 0) {
 465                         // max 8 byte in one urb (endpoint size)
 466                         length = (todo < 8) ? todo : 8;
 467                         // copy data to transfer buffer
 468                         memcpy(port->write_urb->transfer_buffer, priv->buf + priv->cur_pos, length );
 469
 470                         usb_fill_bulk_urb( port->write_urb,
 471                                            port->serial->dev,
 472                                            usb_sndbulkpipe( port->serial->dev, priv->write_int_endpoint_address),
 473                                            port->write_urb->transfer_buffer,
 474                                            length,
 475                                            kobil_write_callback,
 476                                            port
 477                                 );
 478
 479                         priv->cur_pos = priv->cur_pos + length;
 480                         result = usb_submit_urb( port->write_urb, GFP_ATOMIC );
 481                         dbg("%s - port %d Send write URB returns: %i", __FUNCTION__, port->number, result);
 482                         todo = priv->filled - priv->cur_pos;
 483
 484                         if (todo > 0) {
 485                                 //mdelay(16);
 486                                 set_current_state(TASK_UNINTERRUPTIBLE);
 487                                 schedule_timeout(24 * HZ / 1000);
 488                         }
 489
 490                 } // end while
 491
 492                 priv->filled = 0;
 493                 priv->cur_pos = 0;
 494
 495                 // someone sets the dev to 0 if the close method has been called
 496                 port->interrupt_in_urb->dev = port->serial->dev;
 497
 498                 // start reading
 499                 result = usb_submit_urb( port->interrupt_in_urb, GFP_ATOMIC );
 500                 dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
 501         }
 502         return count;
 503 }
 504
 505
 506 static int kobil_write_room (struct usb_serial_port *port)
 507 {
 508         //dbg("%s - port %d", __FUNCTION__, port->number);
 509         return 8;
 510 }
 511
 512
 513 static int kobil_tiocmget(struct usb_serial_port *port, struct file *file)
 514 {
 515         struct kobil_private * priv;
 516         int result;
 517         unsigned char *transfer_buffer;
 518         int transfer_buffer_length = 8;
 519
 520         priv = usb_get_serial_port_data(port);
 521         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
 522                 // This device doesn't support ioctl calls
 523                 return -EINVAL;
 524         }
 525
 526         // allocate memory for transfer buffer
 527         transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);
 528         if (!transfer_buffer) {
 529                 return -ENOMEM;
 530         }
 531         memset(transfer_buffer, 0, transfer_buffer_length);
 532
 533         result = usb_control_msg( port->serial->dev,
 534                                   usb_rcvctrlpipe(port->serial->dev, 0 ),
 535                                   SUSBCRequest_GetStatusLineState,
 536                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 537                                   0,
 538                                   0,
 539                                   transfer_buffer,
 540                                   transfer_buffer_length,
 541                                   KOBIL_TIMEOUT);
 542
 543         dbg("%s - port %d Send get_status_line_state URB returns: %i. Statusline: %02x",
 544             __FUNCTION__, port->number, result, transfer_buffer[0]);
 545
 546         if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0) {
 547                 priv->line_state |= TIOCM_DSR;
 548         } else {
 549                 priv->line_state &= ~TIOCM_DSR;
 550         }
 551
 552         kfree(transfer_buffer);
 553         return priv->line_state;
 554 }
 555
 556 static int  kobil_tiocmset(struct usb_serial_port *port, struct file *file,
 557                            unsigned int set, unsigned int clear)
 558 {
 559         struct kobil_private * priv;
 560         int result;
 561         int dtr = 0;
 562         int rts = 0;
 563         unsigned char *transfer_buffer;
 564         int transfer_buffer_length = 8;
 565
 566         priv = usb_get_serial_port_data(port);
 567         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
 568                 // This device doesn't support ioctl calls
 569                 return -EINVAL;
 570         }
 571
 572         // allocate memory for transfer buffer
 573         transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);
 574         if (! transfer_buffer) {
 575                 return -ENOMEM;
 576         }
 577         memset(transfer_buffer, 0, transfer_buffer_length);
 578
 579         if (set & TIOCM_RTS)
 580                 rts = 1;
 581         if (set & TIOCM_DTR)
 582                 dtr = 1;
 583         if (clear & TIOCM_RTS)
 584                 rts = 0;
 585         if (clear & TIOCM_DTR)
 586                 dtr = 0;
 587
 588         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
 589                 if (dtr != 0)
 590                         dbg("%s - port %d Setting DTR", __FUNCTION__, port->number);
 591                 else
 592                         dbg("%s - port %d Clearing DTR", __FUNCTION__, port->number);
 593                 result = usb_control_msg( port->serial->dev,
 594                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 595                                           SUSBCRequest_SetStatusLinesOrQueues,
 596                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 597                                           ((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
 598                                           0,
 599                                           transfer_buffer,
 600                                           0,
 601                                           KOBIL_TIMEOUT);
 602         } else {
 603                 if (rts != 0)
 604                         dbg("%s - port %d Setting RTS", __FUNCTION__, port->number);
 605                 else
 606                         dbg("%s - port %d Clearing RTS", __FUNCTION__, port->number);
 607                 result = usb_control_msg( port->serial->dev,
 608                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 609                                           SUSBCRequest_SetStatusLinesOrQueues,
 610                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 611                                           ((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
 612                                           0,
 613                                           transfer_buffer,
 614                                           0,
 615                                           KOBIL_TIMEOUT);
 616         }
 617         dbg("%s - port %d Send set_status_line URB returns: %i", __FUNCTION__, port->number, result);
 618         kfree(transfer_buffer);
 619         return (result < 0) ? result : 0;
 620 }
 621
 622
 623 static int  kobil_ioctl(struct usb_serial_port *port, struct file *file,
 624                         unsigned int cmd, unsigned long arg)
 625 {
 626         struct kobil_private * priv;
 627         int result;
 628         unsigned short urb_val = 0;
 629         unsigned char *transfer_buffer;
 630         int transfer_buffer_length = 8;
 631         char *settings;
 632
 633         priv = usb_get_serial_port_data(port);
 634         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
 635                 // This device doesn't support ioctl calls
 636                 return 0;
 637         }
 638
 639         switch (cmd) {
 640         case TCGETS:   // 0x5401
 641                 result = verify_area(VERIFY_WRITE, (void *)arg, sizeof(struct termios));
 642                 if (result) {
 643                         dbg("%s - port %d Error in verify_area", __FUNCTION__, port->number);
 644                         return(result);
 645                 }
 646                 if (kernel_termios_to_user_termios((struct termios *)arg,
 647                                                    &priv->internal_termios))
 648                         return -EFAULT;
 649                 return 0;
 650
 651         case TCSETS:   // 0x5402
 652                 if (!(port->tty->termios)) {
 653                         dbg("%s - port %d Error: port->tty->termios is NULL", __FUNCTION__, port->number);
 654                         return -ENOTTY;
 655                 }
 656                 result = verify_area(VERIFY_READ, (void *)arg, sizeof(struct termios));
 657                 if (result) {
 658                         dbg("%s - port %d Error in verify_area", __FUNCTION__, port->number);
 659                         return result;
 660                 }
 661                 if (user_termios_to_kernel_termios(&priv->internal_termios,
 662                                                    (struct termios *)arg))
 663                         return -EFAULT;
 664
 665                 settings = (unsigned char *) kmalloc(50, GFP_KERNEL);
 666                 if (! settings) {
 667                         return -ENOBUFS;
 668                 }
 669                 memset(settings, 0, 50);
 670
 671                 switch (priv->internal_termios.c_cflag & CBAUD) {
 672                 case B1200:
 673                         urb_val = SUSBCR_SBR_1200;
 674                         strcat(settings, "1200 ");
 675                         break;
 676                 case B9600:
 677                 default:
 678                         urb_val = SUSBCR_SBR_9600;
 679                         strcat(settings, "9600 ");
 680                         break;
 681                 }
 682
 683                 urb_val |= (priv->internal_termios.c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits : SUSBCR_SPASB_1StopBit;
 684                 strcat(settings, (priv->internal_termios.c_cflag & CSTOPB) ? "2 StopBits " : "1 StopBit ");
 685
 686                 if (priv->internal_termios.c_cflag & PARENB) {
 687                         if  (priv->internal_termios.c_cflag & PARODD) {
 688                                 urb_val |= SUSBCR_SPASB_OddParity;
 689                                 strcat(settings, "Odd Parity");
 690                         } else {
 691                                 urb_val |= SUSBCR_SPASB_EvenParity;
 692                                 strcat(settings, "Even Parity");
 693                         }
 694                 } else {
 695                         urb_val |= SUSBCR_SPASB_NoParity;
 696                         strcat(settings, "No Parity");
 697                 }
 698                 dbg("%s - port %d setting port to: %s", __FUNCTION__, port->number, settings );
 699
 700                 result = usb_control_msg( port->serial->dev,
 701                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 702                                           SUSBCRequest_SetBaudRateParityAndStopBits,
 703                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 704                                           urb_val,
 705                                           0,
 706                                           settings,
 707                                           0,
 708                                           KOBIL_TIMEOUT
 709                         );
 710
 711                 dbg("%s - port %d Send set_baudrate URB returns: %i", __FUNCTION__, port->number, result);
 712                 kfree(settings);
 713                 return 0;
 714
 715         case TCFLSH:   // 0x540B
 716                 transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);
 717                 if (! transfer_buffer) {
 718                         return -ENOBUFS;
 719                 }
 720
 721                 result = usb_control_msg( port->serial->dev,
 722                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 723                                           SUSBCRequest_Misc,
 724                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 725                                           SUSBCR_MSC_ResetAllQueues,
 726                                           0,
 727                                           NULL,//transfer_buffer,
 728                                           0,
 729                                           KOBIL_TIMEOUT
 730                         );
 731
 732                 dbg("%s - port %d Send reset_all_queues (FLUSH) URB returns: %i", __FUNCTION__, port->number, result);
 733
 734                 kfree(transfer_buffer);
 735                 return ((result < 0) ? -EFAULT : 0);
 736
 737         }
 738         return -ENOIOCTLCMD;
 739 }
 740
 741
 742 static int __init kobil_init (void)
 743 {
 744         int retval;
 745         retval = usb_serial_register(&kobil_device);
 746         if (retval)
 747                 goto failed_usb_serial_register;
 748         retval = usb_register(&kobil_driver);
 749         if (retval)
 750                 goto failed_usb_register;
 751
 752         info(DRIVER_VERSION " " DRIVER_AUTHOR);
 753         info(DRIVER_DESC);
 754
 755         return 0;
 756 failed_usb_register:
 757         usb_serial_deregister(&kobil_device);
 758 failed_usb_serial_register:
 759         return retval;
 760 }
 761
 762
 763 static void __exit kobil_exit (void)
 764 {
 765         usb_deregister (&kobil_driver);
 766         usb_serial_deregister (&kobil_device);
 767 }
 768
 769 module_init(kobil_init);
 770 module_exit(kobil_exit);
 771
 772 MODULE_AUTHOR( DRIVER_AUTHOR );
 773 MODULE_DESCRIPTION( DRIVER_DESC );
 774 MODULE_LICENSE( "GPL" );
 775
 776 MODULE_PARM(debug, "i");
 777 MODULE_PARM_DESC(debug, "Debug enabled or not");