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,
  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_driver kobil_device = {
 109         .driver = {
 110                 .owner =        THIS_MODULE,
 111         },
 112         .name =                 "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 termios 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 (((endpoint->desc.bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) &&
 189                     ((endpoint->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)) {
 190                         dbg("%s Found interrupt out endpoint. Address: %d", __FUNCTION__, endpoint->desc.bEndpointAddress);
 191                         priv->write_int_endpoint_address = endpoint->desc.bEndpointAddress;
 192                 }
 193                 if (((endpoint->desc.bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) &&
 194                     ((endpoint->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)) {
 195                         dbg("%s Found interrupt in  endpoint. Address: %d", __FUNCTION__, endpoint->desc.bEndpointAddress);
 196                         priv->read_int_endpoint_address = endpoint->desc.bEndpointAddress;
 197                 }
 198         }
 199         return 0;
 200 }
 201
 202
 203 static void kobil_shutdown (struct usb_serial *serial)
 204 {
 205         int i;
 206         dbg("%s - port %d", __FUNCTION__, serial->port[0]->number);
 207
 208         for (i=0; i < serial->num_ports; ++i) {
 209                 while (serial->port[i]->open_count > 0) {
 210                         kobil_close (serial->port[i], NULL);
 211                 }
 212                 kfree(usb_get_serial_port_data(serial->port[i]));
 213                 usb_set_serial_port_data(serial->port[i], NULL);
 214         }
 215 }
 216
 217
 218 static int kobil_open (struct usb_serial_port *port, struct file *filp)
 219 {
 220         int i, result = 0;
 221         struct kobil_private *priv;
 222         unsigned char *transfer_buffer;
 223         int transfer_buffer_length = 8;
 224         int write_urb_transfer_buffer_length = 8;
 225
 226         dbg("%s - port %d", __FUNCTION__, port->number);
 227         priv = usb_get_serial_port_data(port);
 228         priv->line_state = 0;
 229
 230         // someone sets the dev to 0 if the close method has been called
 231         port->interrupt_in_urb->dev = port->serial->dev;
 232
 233
 234         /* force low_latency on so that our tty_push actually forces
 235          * the data through, otherwise it is scheduled, and with high
 236          * data rates (like with OHCI) data can get lost.
 237          */
 238         port->tty->low_latency = 1;
 239
 240         // without this, every push_tty_char is echoed :-(
 241         port->tty->termios->c_lflag = 0;
 242         port->tty->termios->c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN | XCASE);
 243         port->tty->termios->c_iflag = IGNBRK | IGNPAR | IXOFF;
 244         port->tty->termios->c_oflag &= ~ONLCR; // do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D)
 245
 246         // set up internal termios structure
 247         priv->internal_termios.c_iflag = port->tty->termios->c_iflag;
 248         priv->internal_termios.c_oflag = port->tty->termios->c_oflag;
 249         priv->internal_termios.c_cflag = port->tty->termios->c_cflag;
 250         priv->internal_termios.c_lflag = port->tty->termios->c_lflag;
 251
 252         for (i=0; i<NCCS; i++) {
 253                 priv->internal_termios.c_cc[i] = port->tty->termios->c_cc[i];
 254         }
 255
 256         // allocate memory for transfer buffer
 257         transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);
 258         if (! transfer_buffer) {
 259                 return -ENOMEM;
 260         } else {
 261                 memset(transfer_buffer, 0, transfer_buffer_length);
 262         }
 263
 264         // allocate write_urb
 265         if (!port->write_urb) {
 266                 dbg("%s - port %d  Allocating port->write_urb", __FUNCTION__, port->number);
 267                 port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
 268                 if (!port->write_urb) {
 269                         dbg("%s - port %d usb_alloc_urb failed", __FUNCTION__, port->number);
 270                         kfree(transfer_buffer);
 271                         return -ENOMEM;
 272                 }
 273         }
 274
 275         // allocate memory for write_urb transfer buffer
 276         port->write_urb->transfer_buffer = (unsigned char *) kmalloc(write_urb_transfer_buffer_length, GFP_KERNEL);
 277         if (! port->write_urb->transfer_buffer) {
 278                 kfree(transfer_buffer);
 279                 usb_free_urb(port->write_urb);
 280                 port->write_urb = NULL;
 281                 return -ENOMEM;
 282         }
 283
 284         // get hardware version
 285         result = usb_control_msg( port->serial->dev,
 286                                   usb_rcvctrlpipe(port->serial->dev, 0 ),
 287                                   SUSBCRequest_GetMisc,
 288                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 289                                   SUSBCR_MSC_GetHWVersion,
 290                                   0,
 291                                   transfer_buffer,
 292                                   transfer_buffer_length,
 293                                   KOBIL_TIMEOUT
 294                 );
 295         dbg("%s - port %d Send get_HW_version URB returns: %i", __FUNCTION__, port->number, result);
 296         dbg("Harware version: %i.%i.%i", transfer_buffer[0], transfer_buffer[1], transfer_buffer[2] );
 297
 298         // get firmware version
 299         result = usb_control_msg( port->serial->dev,
 300                                   usb_rcvctrlpipe(port->serial->dev, 0 ),
 301                                   SUSBCRequest_GetMisc,
 302                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 303                                   SUSBCR_MSC_GetFWVersion,
 304                                   0,
 305                                   transfer_buffer,
 306                                   transfer_buffer_length,
 307                                   KOBIL_TIMEOUT
 308                 );
 309         dbg("%s - port %d Send get_FW_version URB returns: %i", __FUNCTION__, port->number, result);
 310         dbg("Firmware version: %i.%i.%i", transfer_buffer[0], transfer_buffer[1], transfer_buffer[2] );
 311
 312         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
 313                 // Setting Baudrate, Parity and Stopbits
 314                 result = usb_control_msg( port->serial->dev,
 315                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 316                                           SUSBCRequest_SetBaudRateParityAndStopBits,
 317                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 318                                           SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity | SUSBCR_SPASB_1StopBit,
 319                                           0,
 320                                           transfer_buffer,
 321                                           0,
 322                                           KOBIL_TIMEOUT
 323                         );
 324                 dbg("%s - port %d Send set_baudrate URB returns: %i", __FUNCTION__, port->number, result);
 325
 326                 // reset all queues
 327                 result = usb_control_msg( port->serial->dev,
 328                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 329                                           SUSBCRequest_Misc,
 330                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 331                                           SUSBCR_MSC_ResetAllQueues,
 332                                           0,
 333                                           transfer_buffer,
 334                                           0,
 335                                           KOBIL_TIMEOUT
 336                         );
 337                 dbg("%s - port %d Send reset_all_queues URB returns: %i", __FUNCTION__, port->number, result);
 338         }
 339         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 340             priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 341                 // start reading (Adapter B 'cause PNP string)
 342                 result = usb_submit_urb( port->interrupt_in_urb, GFP_ATOMIC  );
 343                 dbg("%s - port %d Send read 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_kill_urb(port->write_urb);
 357                 usb_free_urb( port->write_urb );
 358                 port->write_urb = NULL;
 359         }
 360         if (port->interrupt_in_urb)
 361                 usb_kill_urb(port->interrupt_in_urb);
 362 }
 363
 364
 365 static void kobil_read_int_callback( struct urb *purb, struct pt_regs *regs)
 366 {
 367         int i;
 368         int result;
 369         struct usb_serial_port *port = (struct usb_serial_port *) purb->context;
 370         struct tty_struct *tty;
 371         unsigned char *data = purb->transfer_buffer;
 372 //      char *dbg_data;
 373
 374         dbg("%s - port %d", __FUNCTION__, port->number);
 375
 376         if (purb->status) {
 377                 dbg("%s - port %d Read int status not zero: %d", __FUNCTION__, port->number, purb->status);
 378                 return;
 379         }
 380
 381         tty = port->tty;
 382         if (purb->actual_length) {
 383
 384                 // BEGIN DEBUG
 385                 /*
 386                   dbg_data = (unsigned char *) kmalloc((3 *  purb->actual_length + 10) * sizeof(char), GFP_KERNEL);
 387                   if (! dbg_data) {
 388                   return;
 389                   }
 390                   memset(dbg_data, 0, (3 *  purb->actual_length + 10));
 391                   for (i = 0; i < purb->actual_length; i++) {
 392                   sprintf(dbg_data +3*i, "%02X ", data[i]);
 393                   }
 394                   dbg(" <-- %s", dbg_data );
 395                   kfree(dbg_data);
 396                 */
 397                 // END DEBUG
 398
 399                 for (i = 0; i < purb->actual_length; ++i) {
 400                         // if we insert more than TTY_FLIPBUF_SIZE characters, we drop them.
 401                         if(tty->flip.count >= TTY_FLIPBUF_SIZE) {
 402                                 tty_flip_buffer_push(tty);
 403                         }
 404                         // this doesn't actually push the data through unless tty->low_latency is set
 405                         tty_insert_flip_char(tty, data[i], 0);
 406                 }
 407                 tty_flip_buffer_push(tty);
 408         }
 409
 410         // someone sets the dev to 0 if the close method has been called
 411         port->interrupt_in_urb->dev = port->serial->dev;
 412
 413         result = usb_submit_urb( port->interrupt_in_urb, GFP_ATOMIC );
 414         dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
 415 }
 416
 417
 418 static void kobil_write_callback( struct urb *purb, struct pt_regs *regs )
 419 {
 420 }
 421
 422
 423 static int kobil_write (struct usb_serial_port *port,
 424                         const unsigned char *buf, int count)
 425 {
 426         int length = 0;
 427         int result = 0;
 428         int todo = 0;
 429         struct kobil_private * priv;
 430
 431         if (count == 0) {
 432                 dbg("%s - port %d write request of 0 bytes", __FUNCTION__, port->number);
 433                 return 0;
 434         }
 435
 436         priv = usb_get_serial_port_data(port);
 437
 438         if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
 439                 dbg("%s - port %d Error: write request bigger than buffer size", __FUNCTION__, port->number);
 440                 return -ENOMEM;
 441         }
 442
 443         // Copy data to buffer
 444         memcpy (priv->buf + priv->filled, buf, count);
 445
 446         usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, priv->buf + priv->filled);
 447
 448         priv->filled = priv->filled + count;
 449
 450
 451         // only send complete block. TWIN, KAAN SIM and adapter K use the same protocol.
 452         if ( ((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) ||
 453              ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4))) ) {
 454
 455                 // stop reading (except TWIN and KAAN SIM)
 456                 if ( (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) )
 457                         usb_kill_urb(port->interrupt_in_urb);
 458
 459                 todo = priv->filled - priv->cur_pos;
 460
 461                 while(todo > 0) {
 462                         // max 8 byte in one urb (endpoint size)
 463                         length = (todo < 8) ? todo : 8;
 464                         // copy data to transfer buffer
 465                         memcpy(port->write_urb->transfer_buffer, priv->buf + priv->cur_pos, length );
 466                         usb_fill_int_urb( port->write_urb,
 467                                           port->serial->dev,
 468                                           usb_sndintpipe(port->serial->dev, priv->write_int_endpoint_address),
 469                                           port->write_urb->transfer_buffer,
 470                                           length,
 471                                           kobil_write_callback,
 472                                           port,
 473                                           8
 474                                 );
 475
 476                         priv->cur_pos = priv->cur_pos + length;
 477                         result = usb_submit_urb( port->write_urb, GFP_NOIO );
 478                         dbg("%s - port %d Send write URB returns: %i", __FUNCTION__, port->number, result);
 479                         todo = priv->filled - priv->cur_pos;
 480
 481                         if (todo > 0) {
 482                                 msleep(24);
 483                         }
 484
 485                 } // end while
 486
 487                 priv->filled = 0;
 488                 priv->cur_pos = 0;
 489
 490                 // someone sets the dev to 0 if the close method has been called
 491                 port->interrupt_in_urb->dev = port->serial->dev;
 492
 493                 // start reading (except TWIN and KAAN SIM)
 494                 if ( (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) ) {
 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                         result = usb_submit_urb( port->interrupt_in_urb, GFP_NOIO );
 499                         dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
 500                 }
 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         void __user *user_arg = (void __user *)arg;
 633
 634         priv = usb_get_serial_port_data(port);
 635         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
 636                 // This device doesn't support ioctl calls
 637                 return 0;
 638         }
 639
 640         switch (cmd) {
 641         case TCGETS:   // 0x5401
 642                 if (!access_ok(VERIFY_WRITE, user_arg, sizeof(struct termios))) {
 643                         dbg("%s - port %d Error in access_ok", __FUNCTION__, port->number);
 644                         return -EFAULT;
 645                 }
 646                 if (kernel_termios_to_user_termios((struct termios __user *)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                 if (!access_ok(VERIFY_READ, user_arg, sizeof(struct termios))) {
 657                         dbg("%s - port %d Error in access_ok", __FUNCTION__, port->number);
 658                         return -EFAULT;
 659                 }
 660                 if (user_termios_to_kernel_termios(&priv->internal_termios,
 661                                                    (struct termios __user *)arg))
 662                         return -EFAULT;
 663
 664                 settings = (unsigned char *) kmalloc(50, GFP_KERNEL);
 665                 if (! settings) {
 666                         return -ENOBUFS;
 667                 }
 668                 memset(settings, 0, 50);
 669
 670                 switch (priv->internal_termios.c_cflag & CBAUD) {
 671                 case B1200:
 672                         urb_val = SUSBCR_SBR_1200;
 673                         strcat(settings, "1200 ");
 674                         break;
 675                 case B9600:
 676                 default:
 677                         urb_val = SUSBCR_SBR_9600;
 678                         strcat(settings, "9600 ");
 679                         break;
 680                 }
 681
 682                 urb_val |= (priv->internal_termios.c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits : SUSBCR_SPASB_1StopBit;
 683                 strcat(settings, (priv->internal_termios.c_cflag & CSTOPB) ? "2 StopBits " : "1 StopBit ");
 684
 685                 if (priv->internal_termios.c_cflag & PARENB) {
 686                         if  (priv->internal_termios.c_cflag & PARODD) {
 687                                 urb_val |= SUSBCR_SPASB_OddParity;
 688                                 strcat(settings, "Odd Parity");
 689                         } else {
 690                                 urb_val |= SUSBCR_SPASB_EvenParity;
 691                                 strcat(settings, "Even Parity");
 692                         }
 693                 } else {
 694                         urb_val |= SUSBCR_SPASB_NoParity;
 695                         strcat(settings, "No Parity");
 696                 }
 697                 dbg("%s - port %d setting port to: %s", __FUNCTION__, port->number, settings );
 698
 699                 result = usb_control_msg( port->serial->dev,
 700                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 701                                           SUSBCRequest_SetBaudRateParityAndStopBits,
 702                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 703                                           urb_val,
 704                                           0,
 705                                           settings,
 706                                           0,
 707                                           KOBIL_TIMEOUT
 708                         );
 709
 710                 dbg("%s - port %d Send set_baudrate URB returns: %i", __FUNCTION__, port->number, result);
 711                 kfree(settings);
 712                 return 0;
 713
 714         case TCFLSH:   // 0x540B
 715                 transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);
 716                 if (! transfer_buffer) {
 717                         return -ENOBUFS;
 718                 }
 719
 720                 result = usb_control_msg( port->serial->dev,
 721                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 722                                           SUSBCRequest_Misc,
 723                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 724                                           SUSBCR_MSC_ResetAllQueues,
 725                                           0,
 726                                           NULL,//transfer_buffer,
 727                                           0,
 728                                           KOBIL_TIMEOUT
 729                         );
 730
 731                 dbg("%s - port %d Send reset_all_queues (FLUSH) URB returns: %i", __FUNCTION__, port->number, result);
 732
 733                 kfree(transfer_buffer);
 734                 return ((result < 0) ? -EFAULT : 0);
 735
 736         }
 737         return -ENOIOCTLCMD;
 738 }
 739
 740
 741 static int __init kobil_init (void)
 742 {
 743         int retval;
 744         retval = usb_serial_register(&kobil_device);
 745         if (retval)
 746                 goto failed_usb_serial_register;
 747         retval = usb_register(&kobil_driver);
 748         if (retval)
 749                 goto failed_usb_register;
 750
 751         info(DRIVER_VERSION " " DRIVER_AUTHOR);
 752         info(DRIVER_DESC);
 753
 754         return 0;
 755 failed_usb_register:
 756         usb_serial_deregister(&kobil_device);
 757 failed_usb_serial_register:
 758         return retval;
 759 }
 760
 761
 762 static void __exit kobil_exit (void)
 763 {
 764         usb_deregister (&kobil_driver);
 765         usb_serial_deregister (&kobil_device);
 766 }
 767
 768 module_init(kobil_init);
 769 module_exit(kobil_exit);
 770
 771 MODULE_AUTHOR( DRIVER_AUTHOR );
 772 MODULE_DESCRIPTION( DRIVER_DESC );
 773 MODULE_LICENSE( "GPL" );
 774
 775 module_param(debug, bool, S_IRUGO | S_IWUSR);
 776 MODULE_PARM_DESC(debug, "Debug enabled or not");