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
  86
  87 static struct usb_device_id id_table [] = {
  88         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_B_PRODUCT_ID) },
  89         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_K_PRODUCT_ID) },
  90         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_USBTWIN_PRODUCT_ID) },
  91         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_KAAN_SIM_PRODUCT_ID) },
  92         { }                     /* Terminating entry */
  93 };
  94
  95
  96 MODULE_DEVICE_TABLE (usb, id_table);
  97
  98 static struct usb_driver kobil_driver = {
  99         .name =         "kobil",
 100         .probe =        usb_serial_probe,
 101         .disconnect =   usb_serial_disconnect,
 102         .id_table =     id_table,
 103         .no_dynamic_id =        1,
 104 };
 105
 106
 107 static struct usb_serial_driver kobil_device = {
 108         .driver = {
 109                 .owner =        THIS_MODULE,
 110                 .name =         "kobil",
 111         },
 112         .description =          "KOBIL USB smart card terminal",
 113         .id_table =             id_table,
 114         .num_interrupt_in =     NUM_DONT_CARE,
 115         .num_bulk_in =          0,
 116         .num_bulk_out =         0,
 117         .num_ports =            1,
 118         .attach =               kobil_startup,
 119         .shutdown =             kobil_shutdown,
 120         .ioctl =                kobil_ioctl,
 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         int line_state;
 139         struct ktermios internal_termios;
 140 };
 141
 142
 143 static int kobil_startup (struct usb_serial *serial)
 144 {
 145         int i;
 146         struct kobil_private *priv;
 147         struct usb_device *pdev;
 148         struct usb_host_config *actconfig;
 149         struct usb_interface *interface;
 150         struct usb_host_interface *altsetting;
 151         struct usb_host_endpoint *endpoint;
 152
 153         priv = kmalloc(sizeof(struct kobil_private), GFP_KERNEL);
 154         if (!priv){
 155                 return -ENOMEM;
 156         }
 157
 158         priv->filled = 0;
 159         priv->cur_pos = 0;
 160         priv->device_type = le16_to_cpu(serial->dev->descriptor.idProduct);
 161         priv->line_state = 0;
 162
 163         switch (priv->device_type){
 164         case KOBIL_ADAPTER_B_PRODUCT_ID:
 165                 printk(KERN_DEBUG "KOBIL B1 PRO / KAAN PRO detected\n");
 166                 break;
 167         case KOBIL_ADAPTER_K_PRODUCT_ID:
 168                 printk(KERN_DEBUG "KOBIL KAAN Standard Plus / SecOVID Reader Plus detected\n");
 169                 break;
 170         case KOBIL_USBTWIN_PRODUCT_ID:
 171                 printk(KERN_DEBUG "KOBIL USBTWIN detected\n");
 172                 break;
 173         case KOBIL_KAAN_SIM_PRODUCT_ID:
 174                 printk(KERN_DEBUG "KOBIL KAAN SIM detected\n");
 175                 break;
 176         }
 177         usb_set_serial_port_data(serial->port[0], priv);
 178
 179         // search for the necessary endpoints
 180         pdev = serial->dev;
 181         actconfig = pdev->actconfig;
 182         interface = actconfig->interface[0];
 183         altsetting = interface->cur_altsetting;
 184         endpoint = altsetting->endpoint;
 185
 186         for (i = 0; i < altsetting->desc.bNumEndpoints; i++) {
 187                 endpoint = &altsetting->endpoint[i];
 188                 if (usb_endpoint_is_int_out(&endpoint->desc)) {
 189                         dbg("%s Found interrupt out endpoint. Address: %d", __FUNCTION__, endpoint->desc.bEndpointAddress);
 190                         priv->write_int_endpoint_address = endpoint->desc.bEndpointAddress;
 191                 }
 192                 if (usb_endpoint_is_int_in(&endpoint->desc)) {
 193                         dbg("%s Found interrupt in  endpoint. Address: %d", __FUNCTION__, endpoint->desc.bEndpointAddress);
 194                         priv->read_int_endpoint_address = endpoint->desc.bEndpointAddress;
 195                 }
 196         }
 197         return 0;
 198 }
 199
 200
 201 static void kobil_shutdown (struct usb_serial *serial)
 202 {
 203         int i;
 204         dbg("%s - port %d", __FUNCTION__, serial->port[0]->number);
 205
 206         for (i=0; i < serial->num_ports; ++i) {
 207                 while (serial->port[i]->open_count > 0) {
 208                         kobil_close (serial->port[i], NULL);
 209                 }
 210                 kfree(usb_get_serial_port_data(serial->port[i]));
 211                 usb_set_serial_port_data(serial->port[i], NULL);
 212         }
 213 }
 214
 215
 216 static int kobil_open (struct usb_serial_port *port, struct file *filp)
 217 {
 218         int i, result = 0;
 219         struct kobil_private *priv;
 220         unsigned char *transfer_buffer;
 221         int transfer_buffer_length = 8;
 222         int write_urb_transfer_buffer_length = 8;
 223
 224         dbg("%s - port %d", __FUNCTION__, port->number);
 225         priv = usb_get_serial_port_data(port);
 226         priv->line_state = 0;
 227
 228         // someone sets the dev to 0 if the close method has been called
 229         port->interrupt_in_urb->dev = port->serial->dev;
 230
 231
 232         /* force low_latency on so that our tty_push actually forces
 233          * the data through, otherwise it is scheduled, and with high
 234          * data rates (like with OHCI) data can get lost.
 235          */
 236         port->tty->low_latency = 1;
 237
 238         // without this, every push_tty_char is echoed :-(
 239         port->tty->termios->c_lflag = 0;
 240         port->tty->termios->c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN | XCASE);
 241         port->tty->termios->c_iflag = IGNBRK | IGNPAR | IXOFF;
 242         port->tty->termios->c_oflag &= ~ONLCR; // do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D)
 243
 244         // set up internal termios structure
 245         priv->internal_termios.c_iflag = port->tty->termios->c_iflag;
 246         priv->internal_termios.c_oflag = port->tty->termios->c_oflag;
 247         priv->internal_termios.c_cflag = port->tty->termios->c_cflag;
 248         priv->internal_termios.c_lflag = port->tty->termios->c_lflag;
 249
 250         for (i=0; i<NCCS; i++) {
 251                 priv->internal_termios.c_cc[i] = port->tty->termios->c_cc[i];
 252         }
 253
 254         // allocate memory for transfer buffer
 255         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 256         if (! transfer_buffer) {
 257                 return -ENOMEM;
 258         }
 259
 260         // allocate write_urb
 261         if (!port->write_urb) {
 262                 dbg("%s - port %d  Allocating port->write_urb", __FUNCTION__, port->number);
 263                 port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
 264                 if (!port->write_urb) {
 265                         dbg("%s - port %d usb_alloc_urb failed", __FUNCTION__, port->number);
 266                         kfree(transfer_buffer);
 267                         return -ENOMEM;
 268                 }
 269         }
 270
 271         // allocate memory for write_urb transfer buffer
 272         port->write_urb->transfer_buffer = kmalloc(write_urb_transfer_buffer_length, GFP_KERNEL);
 273         if (! port->write_urb->transfer_buffer) {
 274                 kfree(transfer_buffer);
 275                 usb_free_urb(port->write_urb);
 276                 port->write_urb = NULL;
 277                 return -ENOMEM;
 278         }
 279
 280         // get hardware 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_GetHWVersion,
 286                                   0,
 287                                   transfer_buffer,
 288                                   transfer_buffer_length,
 289                                   KOBIL_TIMEOUT
 290                 );
 291         dbg("%s - port %d Send get_HW_version URB returns: %i", __FUNCTION__, port->number, result);
 292         dbg("Harware version: %i.%i.%i", transfer_buffer[0], transfer_buffer[1], transfer_buffer[2] );
 293
 294         // get firmware version
 295         result = usb_control_msg( port->serial->dev,
 296                                   usb_rcvctrlpipe(port->serial->dev, 0 ),
 297                                   SUSBCRequest_GetMisc,
 298                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 299                                   SUSBCR_MSC_GetFWVersion,
 300                                   0,
 301                                   transfer_buffer,
 302                                   transfer_buffer_length,
 303                                   KOBIL_TIMEOUT
 304                 );
 305         dbg("%s - port %d Send get_FW_version URB returns: %i", __FUNCTION__, port->number, result);
 306         dbg("Firmware version: %i.%i.%i", transfer_buffer[0], transfer_buffer[1], transfer_buffer[2] );
 307
 308         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
 309                 // Setting Baudrate, Parity and Stopbits
 310                 result = usb_control_msg( port->serial->dev,
 311                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 312                                           SUSBCRequest_SetBaudRateParityAndStopBits,
 313                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 314                                           SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity | SUSBCR_SPASB_1StopBit,
 315                                           0,
 316                                           transfer_buffer,
 317                                           0,
 318                                           KOBIL_TIMEOUT
 319                         );
 320                 dbg("%s - port %d Send set_baudrate URB returns: %i", __FUNCTION__, port->number, result);
 321
 322                 // reset all queues
 323                 result = usb_control_msg( port->serial->dev,
 324                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 325                                           SUSBCRequest_Misc,
 326                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 327                                           SUSBCR_MSC_ResetAllQueues,
 328                                           0,
 329                                           transfer_buffer,
 330                                           0,
 331                                           KOBIL_TIMEOUT
 332                         );
 333                 dbg("%s - port %d Send reset_all_queues URB returns: %i", __FUNCTION__, port->number, result);
 334         }
 335         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 336             priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 337                 // start reading (Adapter B 'cause PNP string)
 338                 result = usb_submit_urb( port->interrupt_in_urb, GFP_ATOMIC  );
 339                 dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
 340         }
 341
 342         kfree(transfer_buffer);
 343         return 0;
 344 }
 345
 346
 347 static void kobil_close (struct usb_serial_port *port, struct file *filp)
 348 {
 349         dbg("%s - port %d", __FUNCTION__, port->number);
 350
 351         if (port->write_urb) {
 352                 usb_kill_urb(port->write_urb);
 353                 usb_free_urb( port->write_urb );
 354                 port->write_urb = NULL;
 355         }
 356         usb_kill_urb(port->interrupt_in_urb);
 357 }
 358
 359
 360 static void kobil_read_int_callback( struct urb *purb)
 361 {
 362         int result;
 363         struct usb_serial_port *port = (struct usb_serial_port *) purb->context;
 364         struct tty_struct *tty;
 365         unsigned char *data = purb->transfer_buffer;
 366 //      char *dbg_data;
 367
 368         dbg("%s - port %d", __FUNCTION__, port->number);
 369
 370         if (purb->status) {
 371                 dbg("%s - port %d Read int status not zero: %d", __FUNCTION__, port->number, purb->status);
 372                 return;
 373         }
 374
 375         tty = port->tty;
 376         if (purb->actual_length) {
 377
 378                 // BEGIN DEBUG
 379                 /*
 380                   dbg_data = kzalloc((3 *  purb->actual_length + 10) * sizeof(char), GFP_KERNEL);
 381                   if (! dbg_data) {
 382                   return;
 383                   }
 384                   for (i = 0; i < purb->actual_length; i++) {
 385                   sprintf(dbg_data +3*i, "%02X ", data[i]);
 386                   }
 387                   dbg(" <-- %s", dbg_data );
 388                   kfree(dbg_data);
 389                 */
 390                 // END DEBUG
 391
 392                 tty_buffer_request_room(tty, purb->actual_length);
 393                 tty_insert_flip_string(tty, data, purb->actual_length);
 394                 tty_flip_buffer_push(tty);
 395         }
 396
 397         // someone sets the dev to 0 if the close method has been called
 398         port->interrupt_in_urb->dev = port->serial->dev;
 399
 400         result = usb_submit_urb( port->interrupt_in_urb, GFP_ATOMIC );
 401         dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
 402 }
 403
 404
 405 static void kobil_write_callback( struct urb *purb )
 406 {
 407 }
 408
 409
 410 static int kobil_write (struct usb_serial_port *port,
 411                         const unsigned char *buf, int count)
 412 {
 413         int length = 0;
 414         int result = 0;
 415         int todo = 0;
 416         struct kobil_private * priv;
 417
 418         if (count == 0) {
 419                 dbg("%s - port %d write request of 0 bytes", __FUNCTION__, port->number);
 420                 return 0;
 421         }
 422
 423         priv = usb_get_serial_port_data(port);
 424
 425         if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
 426                 dbg("%s - port %d Error: write request bigger than buffer size", __FUNCTION__, port->number);
 427                 return -ENOMEM;
 428         }
 429
 430         // Copy data to buffer
 431         memcpy (priv->buf + priv->filled, buf, count);
 432
 433         usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, priv->buf + priv->filled);
 434
 435         priv->filled = priv->filled + count;
 436
 437
 438         // only send complete block. TWIN, KAAN SIM and adapter K use the same protocol.
 439         if ( ((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) ||
 440              ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4))) ) {
 441
 442                 // stop reading (except TWIN and KAAN SIM)
 443                 if ( (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) )
 444                         usb_kill_urb(port->interrupt_in_urb);
 445
 446                 todo = priv->filled - priv->cur_pos;
 447
 448                 while(todo > 0) {
 449                         // max 8 byte in one urb (endpoint size)
 450                         length = (todo < 8) ? todo : 8;
 451                         // copy data to transfer buffer
 452                         memcpy(port->write_urb->transfer_buffer, priv->buf + priv->cur_pos, length );
 453                         usb_fill_int_urb( port->write_urb,
 454                                           port->serial->dev,
 455                                           usb_sndintpipe(port->serial->dev, priv->write_int_endpoint_address),
 456                                           port->write_urb->transfer_buffer,
 457                                           length,
 458                                           kobil_write_callback,
 459                                           port,
 460                                           8
 461                                 );
 462
 463                         priv->cur_pos = priv->cur_pos + length;
 464                         result = usb_submit_urb( port->write_urb, GFP_NOIO );
 465                         dbg("%s - port %d Send write URB returns: %i", __FUNCTION__, port->number, result);
 466                         todo = priv->filled - priv->cur_pos;
 467
 468                         if (todo > 0) {
 469                                 msleep(24);
 470                         }
 471
 472                 } // end while
 473
 474                 priv->filled = 0;
 475                 priv->cur_pos = 0;
 476
 477                 // someone sets the dev to 0 if the close method has been called
 478                 port->interrupt_in_urb->dev = port->serial->dev;
 479
 480                 // start reading (except TWIN and KAAN SIM)
 481                 if ( (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) ) {
 482                         // someone sets the dev to 0 if the close method has been called
 483                         port->interrupt_in_urb->dev = port->serial->dev;
 484
 485                         result = usb_submit_urb( port->interrupt_in_urb, GFP_NOIO );
 486                         dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
 487                 }
 488         }
 489         return count;
 490 }
 491
 492
 493 static int kobil_write_room (struct usb_serial_port *port)
 494 {
 495         //dbg("%s - port %d", __FUNCTION__, port->number);
 496         return 8;
 497 }
 498
 499
 500 static int kobil_tiocmget(struct usb_serial_port *port, struct file *file)
 501 {
 502         struct kobil_private * priv;
 503         int result;
 504         unsigned char *transfer_buffer;
 505         int transfer_buffer_length = 8;
 506
 507         priv = usb_get_serial_port_data(port);
 508         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
 509                 // This device doesn't support ioctl calls
 510                 return -EINVAL;
 511         }
 512
 513         // allocate memory for transfer buffer
 514         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 515         if (!transfer_buffer) {
 516                 return -ENOMEM;
 517         }
 518
 519         result = usb_control_msg( port->serial->dev,
 520                                   usb_rcvctrlpipe(port->serial->dev, 0 ),
 521                                   SUSBCRequest_GetStatusLineState,
 522                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 523                                   0,
 524                                   0,
 525                                   transfer_buffer,
 526                                   transfer_buffer_length,
 527                                   KOBIL_TIMEOUT);
 528
 529         dbg("%s - port %d Send get_status_line_state URB returns: %i. Statusline: %02x",
 530             __FUNCTION__, port->number, result, transfer_buffer[0]);
 531
 532         if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0) {
 533                 priv->line_state |= TIOCM_DSR;
 534         } else {
 535                 priv->line_state &= ~TIOCM_DSR;
 536         }
 537
 538         kfree(transfer_buffer);
 539         return priv->line_state;
 540 }
 541
 542 static int  kobil_tiocmset(struct usb_serial_port *port, struct file *file,
 543                            unsigned int set, unsigned int clear)
 544 {
 545         struct kobil_private * priv;
 546         int result;
 547         int dtr = 0;
 548         int rts = 0;
 549         unsigned char *transfer_buffer;
 550         int transfer_buffer_length = 8;
 551
 552         priv = usb_get_serial_port_data(port);
 553         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
 554                 // This device doesn't support ioctl calls
 555                 return -EINVAL;
 556         }
 557
 558         // allocate memory for transfer buffer
 559         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 560         if (! transfer_buffer) {
 561                 return -ENOMEM;
 562         }
 563
 564         if (set & TIOCM_RTS)
 565                 rts = 1;
 566         if (set & TIOCM_DTR)
 567                 dtr = 1;
 568         if (clear & TIOCM_RTS)
 569                 rts = 0;
 570         if (clear & TIOCM_DTR)
 571                 dtr = 0;
 572
 573         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
 574                 if (dtr != 0)
 575                         dbg("%s - port %d Setting DTR", __FUNCTION__, port->number);
 576                 else
 577                         dbg("%s - port %d Clearing DTR", __FUNCTION__, 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                                           ((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
 583                                           0,
 584                                           transfer_buffer,
 585                                           0,
 586                                           KOBIL_TIMEOUT);
 587         } else {
 588                 if (rts != 0)
 589                         dbg("%s - port %d Setting RTS", __FUNCTION__, port->number);
 590                 else
 591                         dbg("%s - port %d Clearing RTS", __FUNCTION__, port->number);
 592                 result = usb_control_msg( port->serial->dev,
 593                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 594                                           SUSBCRequest_SetStatusLinesOrQueues,
 595                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 596                                           ((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
 597                                           0,
 598                                           transfer_buffer,
 599                                           0,
 600                                           KOBIL_TIMEOUT);
 601         }
 602         dbg("%s - port %d Send set_status_line URB returns: %i", __FUNCTION__, port->number, result);
 603         kfree(transfer_buffer);
 604         return (result < 0) ? result : 0;
 605 }
 606
 607
 608 static int  kobil_ioctl(struct usb_serial_port *port, struct file *file,
 609                         unsigned int cmd, unsigned long arg)
 610 {
 611         struct kobil_private * priv;
 612         int result;
 613         unsigned short urb_val = 0;
 614         unsigned char *transfer_buffer;
 615         int transfer_buffer_length = 8;
 616         char *settings;
 617         void __user *user_arg = (void __user *)arg;
 618
 619         priv = usb_get_serial_port_data(port);
 620         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
 621                 // This device doesn't support ioctl calls
 622                 return 0;
 623         }
 624
 625         switch (cmd) {
 626         case TCGETS:   // 0x5401
 627                 if (!access_ok(VERIFY_WRITE, user_arg, sizeof(struct ktermios))) {
 628                         dbg("%s - port %d Error in access_ok", __FUNCTION__, port->number);
 629                         return -EFAULT;
 630                 }
 631                 if (kernel_termios_to_user_termios((struct ktermios __user *)arg,
 632                                                    &priv->internal_termios))
 633                         return -EFAULT;
 634                 return 0;
 635
 636         case TCSETS:   // 0x5402
 637                 if (!(port->tty->termios)) {
 638                         dbg("%s - port %d Error: port->tty->termios is NULL", __FUNCTION__, port->number);
 639                         return -ENOTTY;
 640                 }
 641                 if (!access_ok(VERIFY_READ, user_arg, sizeof(struct ktermios))) {
 642                         dbg("%s - port %d Error in access_ok", __FUNCTION__, port->number);
 643                         return -EFAULT;
 644                 }
 645                 if (user_termios_to_kernel_termios(&priv->internal_termios,
 646                                                    (struct ktermios __user *)arg))
 647                         return -EFAULT;
 648
 649                 settings = kzalloc(50, GFP_KERNEL);
 650                 if (! settings) {
 651                         return -ENOBUFS;
 652                 }
 653
 654                 switch (priv->internal_termios.c_cflag & CBAUD) {
 655                 case B1200:
 656                         urb_val = SUSBCR_SBR_1200;
 657                         strcat(settings, "1200 ");
 658                         break;
 659                 case B9600:
 660                 default:
 661                         urb_val = SUSBCR_SBR_9600;
 662                         strcat(settings, "9600 ");
 663                         break;
 664                 }
 665
 666                 urb_val |= (priv->internal_termios.c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits : SUSBCR_SPASB_1StopBit;
 667                 strcat(settings, (priv->internal_termios.c_cflag & CSTOPB) ? "2 StopBits " : "1 StopBit ");
 668
 669                 if (priv->internal_termios.c_cflag & PARENB) {
 670                         if  (priv->internal_termios.c_cflag & PARODD) {
 671                                 urb_val |= SUSBCR_SPASB_OddParity;
 672                                 strcat(settings, "Odd Parity");
 673                         } else {
 674                                 urb_val |= SUSBCR_SPASB_EvenParity;
 675                                 strcat(settings, "Even Parity");
 676                         }
 677                 } else {
 678                         urb_val |= SUSBCR_SPASB_NoParity;
 679                         strcat(settings, "No Parity");
 680                 }
 681                 dbg("%s - port %d setting port to: %s", __FUNCTION__, port->number, settings );
 682
 683                 result = usb_control_msg( port->serial->dev,
 684                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 685                                           SUSBCRequest_SetBaudRateParityAndStopBits,
 686                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 687                                           urb_val,
 688                                           0,
 689                                           settings,
 690                                           0,
 691                                           KOBIL_TIMEOUT
 692                         );
 693
 694                 dbg("%s - port %d Send set_baudrate URB returns: %i", __FUNCTION__, port->number, result);
 695                 kfree(settings);
 696                 return 0;
 697
 698         case TCFLSH:   // 0x540B
 699                 transfer_buffer = kmalloc(transfer_buffer_length, GFP_KERNEL);
 700                 if (! transfer_buffer) {
 701                         return -ENOBUFS;
 702                 }
 703
 704                 result = usb_control_msg( port->serial->dev,
 705                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 706                                           SUSBCRequest_Misc,
 707                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 708                                           SUSBCR_MSC_ResetAllQueues,
 709                                           0,
 710                                           NULL,//transfer_buffer,
 711                                           0,
 712                                           KOBIL_TIMEOUT
 713                         );
 714
 715                 dbg("%s - port %d Send reset_all_queues (FLUSH) URB returns: %i", __FUNCTION__, port->number, result);
 716
 717                 kfree(transfer_buffer);
 718                 return ((result < 0) ? -EFAULT : 0);
 719
 720         }
 721         return -ENOIOCTLCMD;
 722 }
 723
 724
 725 static int __init kobil_init (void)
 726 {
 727         int retval;
 728         retval = usb_serial_register(&kobil_device);
 729         if (retval)
 730                 goto failed_usb_serial_register;
 731         retval = usb_register(&kobil_driver);
 732         if (retval)
 733                 goto failed_usb_register;
 734
 735         info(DRIVER_VERSION " " DRIVER_AUTHOR);
 736         info(DRIVER_DESC);
 737
 738         return 0;
 739 failed_usb_register:
 740         usb_serial_deregister(&kobil_device);
 741 failed_usb_serial_register:
 742         return retval;
 743 }
 744
 745
 746 static void __exit kobil_exit (void)
 747 {
 748         usb_deregister (&kobil_driver);
 749         usb_serial_deregister (&kobil_device);
 750 }
 751
 752 module_init(kobil_init);
 753 module_exit(kobil_exit);
 754
 755 MODULE_AUTHOR( DRIVER_AUTHOR );
 756 MODULE_DESCRIPTION( DRIVER_DESC );
 757 MODULE_LICENSE( "GPL" );
 758
 759 module_param(debug, bool, S_IRUGO | S_IWUSR);
 760 MODULE_PARM_DESC(debug, "Debug enabled or not");