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/config.h>
  39 #include <linux/kernel.h>
  40 #include <linux/errno.h>
  41 #include <linux/init.h>
  42 #include <linux/slab.h>
  43 #include <linux/tty.h>
  44 #include <linux/tty_driver.h>
  45 #include <linux/tty_flip.h>
  46 #include <linux/module.h>
  47 #include <linux/spinlock.h>
  48 #include <asm/uaccess.h>
  49 #include <linux/usb.h>
  50 #include <linux/ioctl.h>
  51 #include "usb-serial.h"
  52 #include "kobil_sct.h"
  53
  54 static int debug;
  55
  56 /* Version Information */
  57 #define DRIVER_VERSION "21/05/2004"
  58 #define DRIVER_AUTHOR "KOBIL Systems GmbH - http://www.kobil.com"
  59 #define DRIVER_DESC "KOBIL USB Smart Card Terminal Driver (experimental)"
  60
  61 #define KOBIL_VENDOR_ID                 0x0D46
  62 #define KOBIL_ADAPTER_B_PRODUCT_ID      0x2011
  63 #define KOBIL_ADAPTER_K_PRODUCT_ID      0x2012
  64 #define KOBIL_USBTWIN_PRODUCT_ID        0x0078
  65 #define KOBIL_KAAN_SIM_PRODUCT_ID       0x0081
  66
  67 #define KOBIL_TIMEOUT           500
  68 #define KOBIL_BUF_LENGTH        300
  69
  70
  71 /* Function prototypes */
  72 static int  kobil_startup (struct usb_serial *serial);
  73 static void kobil_shutdown (struct usb_serial *serial);
  74 static int  kobil_open (struct usb_serial_port *port, struct file *filp);
  75 static void kobil_close (struct usb_serial_port *port, struct file *filp);
  76 static int  kobil_write (struct usb_serial_port *port, int from_user,
  77                          const unsigned char *buf, int count);
  78 static int  kobil_write_room(struct usb_serial_port *port);
  79 static int  kobil_ioctl(struct usb_serial_port *port, struct file *file,
  80                         unsigned int cmd, unsigned long arg);
  81 static int  kobil_tiocmget(struct usb_serial_port *port, struct file *file);
  82 static int  kobil_tiocmset(struct usb_serial_port *port, struct file *file,
  83                            unsigned int set, unsigned int clear);
  84 static void kobil_read_int_callback( struct urb *urb, struct pt_regs *regs );
  85 static void kobil_write_callback( struct urb *purb, struct pt_regs *regs );
  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         .owner =        THIS_MODULE,
 101         .name =         "kobil",
 102         .probe =        usb_serial_probe,
 103         .disconnect =   usb_serial_disconnect,
 104         .id_table =     id_table,
 105 };
 106
 107
 108 static struct usb_serial_device_type kobil_device = {
 109         .owner =                THIS_MODULE,
 110         .name =                 "KOBIL USB smart card terminal",
 111         .id_table =             id_table,
 112         .num_interrupt_in =     NUM_DONT_CARE,
 113         .num_bulk_in =          0,
 114         .num_bulk_out =         0,
 115         .num_ports =            1,
 116         .attach =               kobil_startup,
 117         .shutdown =             kobil_shutdown,
 118         .ioctl =                kobil_ioctl,
 119         .tiocmget =             kobil_tiocmget,
 120         .tiocmset =             kobil_tiocmset,
 121         .open =                 kobil_open,
 122         .close =                kobil_close,
 123         .write =                kobil_write,
 124         .write_room =           kobil_write_room,
 125         .read_int_callback =    kobil_read_int_callback,
 126 };
 127
 128
 129 struct kobil_private {
 130         int write_int_endpoint_address;
 131         int read_int_endpoint_address;
 132         unsigned char buf[KOBIL_BUF_LENGTH]; // buffer for the APDU to send
 133         int filled;  // index of the last char in buf
 134         int cur_pos; // index of the next char to send in buf
 135         __u16 device_type;
 136         int line_state;
 137         struct termios internal_termios;
 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 = serial->product;
 159         priv->line_state = 0;
 160
 161         switch (priv->device_type){
 162         case KOBIL_ADAPTER_B_PRODUCT_ID:
 163                 printk(KERN_DEBUG "KOBIL B1 PRO / KAAN PRO detected\n");
 164                 break;
 165         case KOBIL_ADAPTER_K_PRODUCT_ID:
 166                 printk(KERN_DEBUG "KOBIL KAAN Standard Plus / SecOVID Reader Plus detected\n");
 167                 break;
 168         case KOBIL_USBTWIN_PRODUCT_ID:
 169                 printk(KERN_DEBUG "KOBIL USBTWIN detected\n");
 170                 break;
 171         case KOBIL_KAAN_SIM_PRODUCT_ID:
 172                 printk(KERN_DEBUG "KOBIL KAAN SIM detected\n");
 173                 break;
 174         }
 175         usb_set_serial_port_data(serial->port[0], priv);
 176
 177         // search for the necessary endpoints
 178         pdev = serial->dev;
 179         actconfig = pdev->actconfig;
 180         interface = actconfig->interface[0];
 181         altsetting = interface->cur_altsetting;
 182         endpoint = altsetting->endpoint;
 183
 184         for (i = 0; i < altsetting->desc.bNumEndpoints; i++) {
 185                 endpoint = &altsetting->endpoint[i];
 186                 if (((endpoint->desc.bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) &&
 187                     ((endpoint->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)) {
 188                         dbg("%s Found interrupt out endpoint. Address: %d", __FUNCTION__, endpoint->desc.bEndpointAddress);
 189                         priv->write_int_endpoint_address = endpoint->desc.bEndpointAddress;
 190                 }
 191                 if (((endpoint->desc.bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) &&
 192                     ((endpoint->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)) {
 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 = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);
 256         if (! transfer_buffer) {
 257                 return -ENOMEM;
 258         } else {
 259                 memset(transfer_buffer, 0, transfer_buffer_length);
 260         }
 261
 262         // allocate write_urb
 263         if (!port->write_urb) {
 264                 dbg("%s - port %d  Allocating port->write_urb", __FUNCTION__, port->number);
 265                 port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
 266                 if (!port->write_urb) {
 267                         dbg("%s - port %d usb_alloc_urb failed", __FUNCTION__, port->number);
 268                         kfree(transfer_buffer);
 269                         return -ENOMEM;
 270                 }
 271         }
 272
 273         // allocate memory for write_urb transfer buffer
 274         port->write_urb->transfer_buffer = (unsigned char *) kmalloc(write_urb_transfer_buffer_length, GFP_KERNEL);
 275         if (! port->write_urb->transfer_buffer) {
 276                 kfree(transfer_buffer);
 277                 usb_free_urb(port->write_urb);
 278                 port->write_urb = NULL;
 279                 return -ENOMEM;
 280         }
 281
 282         // get hardware version
 283         result = usb_control_msg( port->serial->dev,
 284                                   usb_rcvctrlpipe(port->serial->dev, 0 ),
 285                                   SUSBCRequest_GetMisc,
 286                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 287                                   SUSBCR_MSC_GetHWVersion,
 288                                   0,
 289                                   transfer_buffer,
 290                                   transfer_buffer_length,
 291                                   KOBIL_TIMEOUT
 292                 );
 293         dbg("%s - port %d Send get_HW_version URB returns: %i", __FUNCTION__, port->number, result);
 294         dbg("Harware version: %i.%i.%i", transfer_buffer[0], transfer_buffer[1], transfer_buffer[2] );
 295
 296         // get firmware version
 297         result = usb_control_msg( port->serial->dev,
 298                                   usb_rcvctrlpipe(port->serial->dev, 0 ),
 299                                   SUSBCRequest_GetMisc,
 300                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 301                                   SUSBCR_MSC_GetFWVersion,
 302                                   0,
 303                                   transfer_buffer,
 304                                   transfer_buffer_length,
 305                                   KOBIL_TIMEOUT
 306                 );
 307         dbg("%s - port %d Send get_FW_version URB returns: %i", __FUNCTION__, port->number, result);
 308         dbg("Firmware version: %i.%i.%i", transfer_buffer[0], transfer_buffer[1], transfer_buffer[2] );
 309
 310         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
 311                 // Setting Baudrate, Parity and Stopbits
 312                 result = usb_control_msg( port->serial->dev,
 313                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 314                                           SUSBCRequest_SetBaudRateParityAndStopBits,
 315                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 316                                           SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity | SUSBCR_SPASB_1StopBit,
 317                                           0,
 318                                           transfer_buffer,
 319                                           0,
 320                                           KOBIL_TIMEOUT
 321                         );
 322                 dbg("%s - port %d Send set_baudrate URB returns: %i", __FUNCTION__, port->number, result);
 323
 324                 // reset all queues
 325                 result = usb_control_msg( port->serial->dev,
 326                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 327                                           SUSBCRequest_Misc,
 328                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 329                                           SUSBCR_MSC_ResetAllQueues,
 330                                           0,
 331                                           transfer_buffer,
 332                                           0,
 333                                           KOBIL_TIMEOUT
 334                         );
 335                 dbg("%s - port %d Send reset_all_queues URB returns: %i", __FUNCTION__, port->number, result);
 336         }
 337         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 338             priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 339                 // start reading (Adapter B 'cause PNP string)
 340                 result = usb_submit_urb( port->interrupt_in_urb, GFP_ATOMIC  );
 341                 dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
 342         }
 343
 344         kfree(transfer_buffer);
 345         return 0;
 346 }
 347
 348
 349 static void kobil_close (struct usb_serial_port *port, struct file *filp)
 350 {
 351         dbg("%s - port %d", __FUNCTION__, port->number);
 352
 353         if (port->write_urb){
 354                 usb_unlink_urb( port->write_urb );
 355                 usb_free_urb( port->write_urb );
 356                 port->write_urb = NULL;
 357         }
 358         if (port->interrupt_in_urb){
 359                 usb_unlink_urb (port->interrupt_in_urb);
 360         }
 361 }
 362
 363
 364 static void kobil_read_int_callback( struct urb *purb, struct pt_regs *regs)
 365 {
 366         int i;
 367         int result;
 368         struct usb_serial_port *port = (struct usb_serial_port *) purb->context;
 369         struct tty_struct *tty;
 370         unsigned char *data = purb->transfer_buffer;
 371 //      char *dbg_data;
 372
 373         dbg("%s - port %d", __FUNCTION__, port->number);
 374
 375         if (purb->status) {
 376                 dbg("%s - port %d Read int status not zero: %d", __FUNCTION__, port->number, purb->status);
 377                 return;
 378         }
 379
 380         tty = port->tty;
 381         if (purb->actual_length) {
 382
 383                 // BEGIN DEBUG
 384                 /*
 385                   dbg_data = (unsigned char *) kmalloc((3 *  purb->actual_length + 10) * sizeof(char), GFP_KERNEL);
 386                   if (! dbg_data) {
 387                   return;
 388                   }
 389                   memset(dbg_data, 0, (3 *  purb->actual_length + 10));
 390                   for (i = 0; i < purb->actual_length; i++) {
 391                   sprintf(dbg_data +3*i, "%02X ", data[i]);
 392                   }
 393                   dbg(" <-- %s", dbg_data );
 394                   kfree(dbg_data);
 395                 */
 396                 // END DEBUG
 397
 398                 for (i = 0; i < purb->actual_length; ++i) {
 399                         // if we insert more than TTY_FLIPBUF_SIZE characters, we drop them.
 400                         if(tty->flip.count >= TTY_FLIPBUF_SIZE) {
 401                                 tty_flip_buffer_push(tty);
 402                         }
 403                         // this doesn't actually push the data through unless tty->low_latency is set
 404                         tty_insert_flip_char(tty, data[i], 0);
 405                 }
 406                 tty_flip_buffer_push(tty);
 407         }
 408
 409         // someone sets the dev to 0 if the close method has been called
 410         port->interrupt_in_urb->dev = port->serial->dev;
 411
 412         result = usb_submit_urb( port->interrupt_in_urb, GFP_ATOMIC );
 413         dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
 414 }
 415
 416
 417 static void kobil_write_callback( struct urb *purb, struct pt_regs *regs )
 418 {
 419 }
 420
 421
 422 static int kobil_write (struct usb_serial_port *port, int from_user,
 423                         const unsigned char *buf, int count)
 424 {
 425         int length = 0;
 426         int result = 0;
 427         int todo = 0;
 428         struct kobil_private * priv;
 429
 430         if (count == 0) {
 431                 dbg("%s - port %d write request of 0 bytes", __FUNCTION__, port->number);
 432                 return 0;
 433         }
 434
 435         priv = usb_get_serial_port_data(port);
 436
 437         if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
 438                 dbg("%s - port %d Error: write request bigger than buffer size", __FUNCTION__, port->number);
 439                 return -ENOMEM;
 440         }
 441
 442         // Copy data to buffer
 443         if (from_user) {
 444                 if (copy_from_user(priv->buf + priv->filled, buf, count)) {
 445                         return -EFAULT;
 446                 }
 447         } else {
 448                 memcpy (priv->buf + priv->filled, buf, count);
 449         }
 450
 451         usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, priv->buf + priv->filled);
 452
 453         priv->filled = priv->filled + count;
 454
 455
 456         // only send complete block. TWIN, KAAN SIM and adapter K use the same protocol.
 457         if ( ((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) ||
 458              ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4))) ) {
 459
 460                 // stop reading (except TWIN and KAAN SIM)
 461                 if ( (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) ) {
 462                         usb_unlink_urb( port->interrupt_in_urb );
 463                 }
 464
 465                 todo = priv->filled - priv->cur_pos;
 466
 467                 while(todo > 0) {
 468                         // max 8 byte in one urb (endpoint size)
 469                         length = (todo < 8) ? todo : 8;
 470                         // copy data to transfer buffer
 471                         memcpy(port->write_urb->transfer_buffer, priv->buf + priv->cur_pos, length );
 472                         usb_fill_int_urb( port->write_urb,
 473                                           port->serial->dev,
 474                                           usb_sndintpipe(port->serial->dev, priv->write_int_endpoint_address),
 475                                           port->write_urb->transfer_buffer,
 476                                           length,
 477                                           kobil_write_callback,
 478                                           port,
 479                                           8
 480                                 );
 481
 482                         priv->cur_pos = priv->cur_pos + length;
 483                         result = usb_submit_urb( port->write_urb, GFP_NOIO );
 484                         dbg("%s - port %d Send write URB returns: %i", __FUNCTION__, port->number, result);
 485                         todo = priv->filled - priv->cur_pos;
 486
 487                         if (todo > 0) {
 488                                 msleep(24);
 489                         }
 490
 491                 } // end while
 492
 493                 priv->filled = 0;
 494                 priv->cur_pos = 0;
 495
 496                 // someone sets the dev to 0 if the close method has been called
 497                 port->interrupt_in_urb->dev = port->serial->dev;
 498
 499                 // start reading (except TWIN and KAAN SIM)
 500                 if ( (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) ) {
 501                         // someone sets the dev to 0 if the close method has been called
 502                         port->interrupt_in_urb->dev = port->serial->dev;
 503
 504                         result = usb_submit_urb( port->interrupt_in_urb, GFP_NOIO );
 505                         dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
 506                 }
 507         }
 508         return count;
 509 }
 510
 511
 512 static int kobil_write_room (struct usb_serial_port *port)
 513 {
 514         //dbg("%s - port %d", __FUNCTION__, port->number);
 515         return 8;
 516 }
 517
 518
 519 static int kobil_tiocmget(struct usb_serial_port *port, struct file *file)
 520 {
 521         struct kobil_private * priv;
 522         int result;
 523         unsigned char *transfer_buffer;
 524         int transfer_buffer_length = 8;
 525
 526         priv = usb_get_serial_port_data(port);
 527         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
 528                 // This device doesn't support ioctl calls
 529                 return -EINVAL;
 530         }
 531
 532         // allocate memory for transfer buffer
 533         transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);
 534         if (!transfer_buffer) {
 535                 return -ENOMEM;
 536         }
 537         memset(transfer_buffer, 0, transfer_buffer_length);
 538
 539         result = usb_control_msg( port->serial->dev,
 540                                   usb_rcvctrlpipe(port->serial->dev, 0 ),
 541                                   SUSBCRequest_GetStatusLineState,
 542                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 543                                   0,
 544                                   0,
 545                                   transfer_buffer,
 546                                   transfer_buffer_length,
 547                                   KOBIL_TIMEOUT);
 548
 549         dbg("%s - port %d Send get_status_line_state URB returns: %i. Statusline: %02x",
 550             __FUNCTION__, port->number, result, transfer_buffer[0]);
 551
 552         if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0) {
 553                 priv->line_state |= TIOCM_DSR;
 554         } else {
 555                 priv->line_state &= ~TIOCM_DSR;
 556         }
 557
 558         kfree(transfer_buffer);
 559         return priv->line_state;
 560 }
 561
 562 static int  kobil_tiocmset(struct usb_serial_port *port, struct file *file,
 563                            unsigned int set, unsigned int clear)
 564 {
 565         struct kobil_private * priv;
 566         int result;
 567         int dtr = 0;
 568         int rts = 0;
 569         unsigned char *transfer_buffer;
 570         int transfer_buffer_length = 8;
 571
 572         priv = usb_get_serial_port_data(port);
 573         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
 574                 // This device doesn't support ioctl calls
 575                 return -EINVAL;
 576         }
 577
 578         // allocate memory for transfer buffer
 579         transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);
 580         if (! transfer_buffer) {
 581                 return -ENOMEM;
 582         }
 583         memset(transfer_buffer, 0, transfer_buffer_length);
 584
 585         if (set & TIOCM_RTS)
 586                 rts = 1;
 587         if (set & TIOCM_DTR)
 588                 dtr = 1;
 589         if (clear & TIOCM_RTS)
 590                 rts = 0;
 591         if (clear & TIOCM_DTR)
 592                 dtr = 0;
 593
 594         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
 595                 if (dtr != 0)
 596                         dbg("%s - port %d Setting DTR", __FUNCTION__, port->number);
 597                 else
 598                         dbg("%s - port %d Clearing DTR", __FUNCTION__, port->number);
 599                 result = usb_control_msg( port->serial->dev,
 600                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 601                                           SUSBCRequest_SetStatusLinesOrQueues,
 602                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 603                                           ((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
 604                                           0,
 605                                           transfer_buffer,
 606                                           0,
 607                                           KOBIL_TIMEOUT);
 608         } else {
 609                 if (rts != 0)
 610                         dbg("%s - port %d Setting RTS", __FUNCTION__, port->number);
 611                 else
 612                         dbg("%s - port %d Clearing RTS", __FUNCTION__, port->number);
 613                 result = usb_control_msg( port->serial->dev,
 614                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 615                                           SUSBCRequest_SetStatusLinesOrQueues,
 616                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 617                                           ((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
 618                                           0,
 619                                           transfer_buffer,
 620                                           0,
 621                                           KOBIL_TIMEOUT);
 622         }
 623         dbg("%s - port %d Send set_status_line URB returns: %i", __FUNCTION__, port->number, result);
 624         kfree(transfer_buffer);
 625         return (result < 0) ? result : 0;
 626 }
 627
 628
 629 static int  kobil_ioctl(struct usb_serial_port *port, struct file *file,
 630                         unsigned int cmd, unsigned long arg)
 631 {
 632         struct kobil_private * priv;
 633         int result;
 634         unsigned short urb_val = 0;
 635         unsigned char *transfer_buffer;
 636         int transfer_buffer_length = 8;
 637         char *settings;
 638         void __user *user_arg = (void __user *)arg;
 639
 640         priv = usb_get_serial_port_data(port);
 641         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
 642                 // This device doesn't support ioctl calls
 643                 return 0;
 644         }
 645
 646         switch (cmd) {
 647         case TCGETS:   // 0x5401
 648                 result = verify_area(VERIFY_WRITE, user_arg, sizeof(struct termios));
 649                 if (result) {
 650                         dbg("%s - port %d Error in verify_area", __FUNCTION__, port->number);
 651                         return(result);
 652                 }
 653                 if (kernel_termios_to_user_termios((struct termios __user *)arg,
 654                                                    &priv->internal_termios))
 655                         return -EFAULT;
 656                 return 0;
 657
 658         case TCSETS:   // 0x5402
 659                 if (!(port->tty->termios)) {
 660                         dbg("%s - port %d Error: port->tty->termios is NULL", __FUNCTION__, port->number);
 661                         return -ENOTTY;
 662                 }
 663                 result = verify_area(VERIFY_READ, user_arg, sizeof(struct termios));
 664                 if (result) {
 665                         dbg("%s - port %d Error in verify_area", __FUNCTION__, port->number);
 666                         return result;
 667                 }
 668                 if (user_termios_to_kernel_termios(&priv->internal_termios,
 669                                                    (struct termios __user *)arg))
 670                         return -EFAULT;
 671
 672                 settings = (unsigned char *) kmalloc(50, GFP_KERNEL);
 673                 if (! settings) {
 674                         return -ENOBUFS;
 675                 }
 676                 memset(settings, 0, 50);
 677
 678                 switch (priv->internal_termios.c_cflag & CBAUD) {
 679                 case B1200:
 680                         urb_val = SUSBCR_SBR_1200;
 681                         strcat(settings, "1200 ");
 682                         break;
 683                 case B9600:
 684                 default:
 685                         urb_val = SUSBCR_SBR_9600;
 686                         strcat(settings, "9600 ");
 687                         break;
 688                 }
 689
 690                 urb_val |= (priv->internal_termios.c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits : SUSBCR_SPASB_1StopBit;
 691                 strcat(settings, (priv->internal_termios.c_cflag & CSTOPB) ? "2 StopBits " : "1 StopBit ");
 692
 693                 if (priv->internal_termios.c_cflag & PARENB) {
 694                         if  (priv->internal_termios.c_cflag & PARODD) {
 695                                 urb_val |= SUSBCR_SPASB_OddParity;
 696                                 strcat(settings, "Odd Parity");
 697                         } else {
 698                                 urb_val |= SUSBCR_SPASB_EvenParity;
 699                                 strcat(settings, "Even Parity");
 700                         }
 701                 } else {
 702                         urb_val |= SUSBCR_SPASB_NoParity;
 703                         strcat(settings, "No Parity");
 704                 }
 705                 dbg("%s - port %d setting port to: %s", __FUNCTION__, port->number, settings );
 706
 707                 result = usb_control_msg( port->serial->dev,
 708                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 709                                           SUSBCRequest_SetBaudRateParityAndStopBits,
 710                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 711                                           urb_val,
 712                                           0,
 713                                           settings,
 714                                           0,
 715                                           KOBIL_TIMEOUT
 716                         );
 717
 718                 dbg("%s - port %d Send set_baudrate URB returns: %i", __FUNCTION__, port->number, result);
 719                 kfree(settings);
 720                 return 0;
 721
 722         case TCFLSH:   // 0x540B
 723                 transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);
 724                 if (! transfer_buffer) {
 725                         return -ENOBUFS;
 726                 }
 727
 728                 result = usb_control_msg( port->serial->dev,
 729                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 730                                           SUSBCRequest_Misc,
 731                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 732                                           SUSBCR_MSC_ResetAllQueues,
 733                                           0,
 734                                           NULL,//transfer_buffer,
 735                                           0,
 736                                           KOBIL_TIMEOUT
 737                         );
 738
 739                 dbg("%s - port %d Send reset_all_queues (FLUSH) URB returns: %i", __FUNCTION__, port->number, result);
 740
 741                 kfree(transfer_buffer);
 742                 return ((result < 0) ? -EFAULT : 0);
 743
 744         }
 745         return -ENOIOCTLCMD;
 746 }
 747
 748
 749 static int __init kobil_init (void)
 750 {
 751         int retval;
 752         retval = usb_serial_register(&kobil_device);
 753         if (retval)
 754                 goto failed_usb_serial_register;
 755         retval = usb_register(&kobil_driver);
 756         if (retval)
 757                 goto failed_usb_register;
 758
 759         info(DRIVER_VERSION " " DRIVER_AUTHOR);
 760         info(DRIVER_DESC);
 761
 762         return 0;
 763 failed_usb_register:
 764         usb_serial_deregister(&kobil_device);
 765 failed_usb_serial_register:
 766         return retval;
 767 }
 768
 769
 770 static void __exit kobil_exit (void)
 771 {
 772         usb_deregister (&kobil_driver);
 773         usb_serial_deregister (&kobil_device);
 774 }
 775
 776 module_init(kobil_init);
 777 module_exit(kobil_exit);
 778
 779 MODULE_AUTHOR( DRIVER_AUTHOR );
 780 MODULE_DESCRIPTION( DRIVER_DESC );
 781 MODULE_LICENSE( "GPL" );
 782
 783 module_param(debug, bool, S_IRUGO | S_IWUSR);
 784 MODULE_PARM_DESC(debug, "Debug enabled or not");