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
  52
  53 #include "kobil_sct.h"
  54 //#include "../core/usb-debug.c"
  55
  56 #ifdef CONFIG_USB_SERIAL_DEBUG
  57         static int debug = 1;
  58 #else
  59         static int debug;
  60 #endif
  61
  62 #include "usb-serial.h"
  63
  64 /* Version Information */
  65 #define DRIVER_VERSION "21/05/2004"
  66 #define DRIVER_AUTHOR "KOBIL Systems GmbH - http://www.kobil.com"
  67 #define DRIVER_DESC "KOBIL USB Smart Card Terminal Driver (experimental)"
  68
  69 #define KOBIL_VENDOR_ID                 0x0D46
  70 #define KOBIL_ADAPTER_B_PRODUCT_ID      0x2011
  71 #define KOBIL_ADAPTER_K_PRODUCT_ID      0x2012
  72 #define KOBIL_USBTWIN_PRODUCT_ID        0x0078
  73 #define KOBIL_KAAN_SIM_PRODUCT_ID       0x0081
  74
  75 #define KOBIL_TIMEOUT           500
  76 #define KOBIL_BUF_LENGTH        300
  77
  78
  79 /* Function prototypes */
  80 static int  kobil_startup (struct usb_serial *serial);
  81 static void kobil_shutdown (struct usb_serial *serial);
  82 static int  kobil_open (struct usb_serial_port *port, struct file *filp);
  83 static void kobil_close (struct usb_serial_port *port, struct file *filp);
  84 static int  kobil_write (struct usb_serial_port *port, int from_user,
  85                          const unsigned char *buf, int count);
  86 static int  kobil_write_room(struct usb_serial_port *port);
  87 static int  kobil_ioctl(struct usb_serial_port *port, struct file *file,
  88                         unsigned int cmd, unsigned long arg);
  89 static int  kobil_tiocmget(struct usb_serial_port *port, struct file *file);
  90 static int  kobil_tiocmset(struct usb_serial_port *port, struct file *file,
  91                            unsigned int set, unsigned int clear);
  92 static void kobil_read_int_callback( struct urb *urb, struct pt_regs *regs );
  93 static void kobil_write_callback( struct urb *purb, struct pt_regs *regs );
  94
  95
  96 static struct usb_device_id id_table [] = {
  97         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_B_PRODUCT_ID) },
  98         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_K_PRODUCT_ID) },
  99         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_USBTWIN_PRODUCT_ID) },
 100         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_KAAN_SIM_PRODUCT_ID) },
 101         { }                     /* Terminating entry */
 102 };
 103
 104
 105 MODULE_DEVICE_TABLE (usb, id_table);
 106
 107 static struct usb_driver kobil_driver = {
 108         .owner =        THIS_MODULE,
 109         .name =         "kobil",
 110         .probe =        usb_serial_probe,
 111         .disconnect =   usb_serial_disconnect,
 112         .id_table =     id_table,
 113 };
 114
 115
 116 static struct usb_serial_device_type kobil_device = {
 117         .owner =                THIS_MODULE,
 118         .name =                 "KOBIL USB smart card terminal",
 119         .id_table =             id_table,
 120         .num_interrupt_in =     NUM_DONT_CARE,
 121         .num_bulk_in =          0,
 122         .num_bulk_out =         0,
 123         .num_ports =            1,
 124         .attach =               kobil_startup,
 125         .shutdown =             kobil_shutdown,
 126         .ioctl =                kobil_ioctl,
 127         .tiocmget =             kobil_tiocmget,
 128         .tiocmset =             kobil_tiocmset,
 129         .open =                 kobil_open,
 130         .close =                kobil_close,
 131         .write =                kobil_write,
 132         .write_room =           kobil_write_room,
 133         .read_int_callback =    kobil_read_int_callback,
 134 };
 135
 136
 137 struct kobil_private {
 138         int write_int_endpoint_address;
 139         int read_int_endpoint_address;
 140         unsigned char buf[KOBIL_BUF_LENGTH]; // buffer for the APDU to send
 141         int filled;  // index of the last char in buf
 142         int cur_pos; // index of the next char to send in buf
 143         __u16 device_type;
 144         int line_state;
 145         struct termios internal_termios;
 146 };
 147
 148
 149 static int kobil_startup (struct usb_serial *serial)
 150 {
 151         int i;
 152         struct kobil_private *priv;
 153         struct usb_device *pdev;
 154         struct usb_host_config *actconfig;
 155         struct usb_interface *interface;
 156         struct usb_host_interface *altsetting;
 157         struct usb_host_endpoint *endpoint;
 158
 159         priv = kmalloc(sizeof(struct kobil_private), GFP_KERNEL);
 160         if (!priv){
 161                 return -ENOMEM;
 162         }
 163
 164         priv->filled = 0;
 165         priv->cur_pos = 0;
 166         priv->device_type = serial->product;
 167         priv->line_state = 0;
 168
 169         switch (priv->device_type){
 170         case KOBIL_ADAPTER_B_PRODUCT_ID:
 171                 printk(KERN_DEBUG "KOBIL B1 PRO / KAAN PRO detected\n");
 172                 break;
 173         case KOBIL_ADAPTER_K_PRODUCT_ID:
 174                 printk(KERN_DEBUG "KOBIL KAAN Standard Plus / SecOVID Reader Plus detected\n");
 175                 break;
 176         case KOBIL_USBTWIN_PRODUCT_ID:
 177                 printk(KERN_DEBUG "KOBIL USBTWIN detected\n");
 178                 break;
 179         case KOBIL_KAAN_SIM_PRODUCT_ID:
 180                 printk(KERN_DEBUG "KOBIL KAAN SIM detected\n");
 181                 break;
 182         }
 183         usb_set_serial_port_data(serial->port[0], priv);
 184
 185         // search for the necessary endpoints
 186         pdev = serial->dev;
 187         actconfig = pdev->actconfig;
 188         interface = actconfig->interface[0];
 189         altsetting = interface->cur_altsetting;
 190         endpoint = altsetting->endpoint;
 191
 192         for (i = 0; i < altsetting->desc.bNumEndpoints; i++) {
 193                 endpoint = &altsetting->endpoint[i];
 194                 if (((endpoint->desc.bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) &&
 195                     ((endpoint->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)) {
 196                         dbg("%s Found interrupt out endpoint. Address: %d", __FUNCTION__, endpoint->desc.bEndpointAddress);
 197                         priv->write_int_endpoint_address = endpoint->desc.bEndpointAddress;
 198                 }
 199                 if (((endpoint->desc.bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) &&
 200                     ((endpoint->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)) {
 201                         dbg("%s Found interrupt in  endpoint. Address: %d", __FUNCTION__, endpoint->desc.bEndpointAddress);
 202                         priv->read_int_endpoint_address = endpoint->desc.bEndpointAddress;
 203                 }
 204         }
 205         return 0;
 206 }
 207
 208
 209 static void kobil_shutdown (struct usb_serial *serial)
 210 {
 211         int i;
 212         dbg("%s - port %d", __FUNCTION__, serial->port[0]->number);
 213
 214         for (i=0; i < serial->num_ports; ++i) {
 215                 while (serial->port[i]->open_count > 0) {
 216                         kobil_close (serial->port[i], NULL);
 217                 }
 218                 kfree(usb_get_serial_port_data(serial->port[i]));
 219                 usb_set_serial_port_data(serial->port[i], NULL);
 220         }
 221 }
 222
 223
 224 static int kobil_open (struct usb_serial_port *port, struct file *filp)
 225 {
 226         int i, result = 0;
 227         struct kobil_private *priv;
 228         unsigned char *transfer_buffer;
 229         int transfer_buffer_length = 8;
 230         int write_urb_transfer_buffer_length = 8;
 231
 232         dbg("%s - port %d", __FUNCTION__, port->number);
 233         priv = usb_get_serial_port_data(port);
 234         priv->line_state = 0;
 235
 236         // someone sets the dev to 0 if the close method has been called
 237         port->interrupt_in_urb->dev = port->serial->dev;
 238
 239
 240         /* force low_latency on so that our tty_push actually forces
 241          * the data through, otherwise it is scheduled, and with high
 242          * data rates (like with OHCI) data can get lost.
 243          */
 244         port->tty->low_latency = 1;
 245
 246         // without this, every push_tty_char is echoed :-(
 247         port->tty->termios->c_lflag = 0;
 248         port->tty->termios->c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN | XCASE);
 249         port->tty->termios->c_iflag = IGNBRK | IGNPAR | IXOFF;
 250         port->tty->termios->c_oflag &= ~ONLCR; // do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D)
 251
 252         // set up internal termios structure
 253         priv->internal_termios.c_iflag = port->tty->termios->c_iflag;
 254         priv->internal_termios.c_oflag = port->tty->termios->c_oflag;
 255         priv->internal_termios.c_cflag = port->tty->termios->c_cflag;
 256         priv->internal_termios.c_lflag = port->tty->termios->c_lflag;
 257
 258         for (i=0; i<NCCS; i++) {
 259                 priv->internal_termios.c_cc[i] = port->tty->termios->c_cc[i];
 260         }
 261
 262         // allocate memory for transfer buffer
 263         transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);
 264         if (! transfer_buffer) {
 265                 return -ENOMEM;
 266         } else {
 267                 memset(transfer_buffer, 0, transfer_buffer_length);
 268         }
 269
 270         // allocate write_urb
 271         if (!port->write_urb) {
 272                 dbg("%s - port %d  Allocating port->write_urb", __FUNCTION__, port->number);
 273                 port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
 274                 if (!port->write_urb) {
 275                         dbg("%s - port %d usb_alloc_urb failed", __FUNCTION__, port->number);
 276                         kfree(transfer_buffer);
 277                         return -ENOMEM;
 278                 }
 279         }
 280
 281         // allocate memory for write_urb transfer buffer
 282         port->write_urb->transfer_buffer = (unsigned char *) kmalloc(write_urb_transfer_buffer_length, GFP_KERNEL);
 283         if (! port->write_urb->transfer_buffer) {
 284                 kfree(transfer_buffer);
 285                 usb_free_urb(port->write_urb);
 286                 port->write_urb = NULL;
 287                 return -ENOMEM;
 288         }
 289
 290         // get hardware version
 291         result = usb_control_msg( port->serial->dev,
 292                                   usb_rcvctrlpipe(port->serial->dev, 0 ),
 293                                   SUSBCRequest_GetMisc,
 294                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 295                                   SUSBCR_MSC_GetHWVersion,
 296                                   0,
 297                                   transfer_buffer,
 298                                   transfer_buffer_length,
 299                                   KOBIL_TIMEOUT
 300                 );
 301         dbg("%s - port %d Send get_HW_version URB returns: %i", __FUNCTION__, port->number, result);
 302         dbg("Harware version: %i.%i.%i", transfer_buffer[0], transfer_buffer[1], transfer_buffer[2] );
 303
 304         // get firmware version
 305         result = usb_control_msg( port->serial->dev,
 306                                   usb_rcvctrlpipe(port->serial->dev, 0 ),
 307                                   SUSBCRequest_GetMisc,
 308                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 309                                   SUSBCR_MSC_GetFWVersion,
 310                                   0,
 311                                   transfer_buffer,
 312                                   transfer_buffer_length,
 313                                   KOBIL_TIMEOUT
 314                 );
 315         dbg("%s - port %d Send get_FW_version URB returns: %i", __FUNCTION__, port->number, result);
 316         dbg("Firmware version: %i.%i.%i", transfer_buffer[0], transfer_buffer[1], transfer_buffer[2] );
 317
 318         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
 319                 // Setting Baudrate, Parity and Stopbits
 320                 result = usb_control_msg( port->serial->dev,
 321                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 322                                           SUSBCRequest_SetBaudRateParityAndStopBits,
 323                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 324                                           SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity | SUSBCR_SPASB_1StopBit,
 325                                           0,
 326                                           transfer_buffer,
 327                                           0,
 328                                           KOBIL_TIMEOUT
 329                         );
 330                 dbg("%s - port %d Send set_baudrate URB returns: %i", __FUNCTION__, port->number, result);
 331
 332                 // reset all queues
 333                 result = usb_control_msg( port->serial->dev,
 334                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 335                                           SUSBCRequest_Misc,
 336                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 337                                           SUSBCR_MSC_ResetAllQueues,
 338                                           0,
 339                                           transfer_buffer,
 340                                           0,
 341                                           KOBIL_TIMEOUT
 342                         );
 343                 dbg("%s - port %d Send reset_all_queues URB returns: %i", __FUNCTION__, port->number, result);
 344         }
 345         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 346             priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 347                 // start reading (Adapter B 'cause PNP string)
 348                 result = usb_submit_urb( port->interrupt_in_urb, GFP_ATOMIC  );
 349                 dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
 350         }
 351
 352         kfree(transfer_buffer);
 353         return 0;
 354 }
 355
 356
 357 static void kobil_close (struct usb_serial_port *port, struct file *filp)
 358 {
 359         dbg("%s - port %d", __FUNCTION__, port->number);
 360
 361         if (port->write_urb){
 362                 usb_unlink_urb( port->write_urb );
 363                 usb_free_urb( port->write_urb );
 364                 port->write_urb = 0;
 365         }
 366         if (port->interrupt_in_urb){
 367                 usb_unlink_urb (port->interrupt_in_urb);
 368         }
 369 }
 370
 371
 372 static void kobil_read_int_callback( struct urb *purb, struct pt_regs *regs)
 373 {
 374         int i;
 375         int result;
 376         struct usb_serial_port *port = (struct usb_serial_port *) purb->context;
 377         struct tty_struct *tty;
 378         unsigned char *data = purb->transfer_buffer;
 379 //      char *dbg_data;
 380
 381         dbg("%s - port %d", __FUNCTION__, port->number);
 382
 383         if (purb->status) {
 384                 dbg("%s - port %d Read int status not zero: %d", __FUNCTION__, port->number, purb->status);
 385                 return;
 386         }
 387
 388         tty = port->tty;
 389         if (purb->actual_length) {
 390
 391                 // BEGIN DEBUG
 392                 /*
 393                   dbg_data = (unsigned char *) kmalloc((3 *  purb->actual_length + 10) * sizeof(char), GFP_KERNEL);
 394                   if (! dbg_data) {
 395                   return;
 396                   }
 397                   memset(dbg_data, 0, (3 *  purb->actual_length + 10));
 398                   for (i = 0; i < purb->actual_length; i++) {
 399                   sprintf(dbg_data +3*i, "%02X ", data[i]);
 400                   }
 401                   dbg(" <-- %s", dbg_data );
 402                   kfree(dbg_data);
 403                 */
 404                 // END DEBUG
 405
 406                 for (i = 0; i < purb->actual_length; ++i) {
 407                         // if we insert more than TTY_FLIPBUF_SIZE characters, we drop them.
 408                         if(tty->flip.count >= TTY_FLIPBUF_SIZE) {
 409                                 tty_flip_buffer_push(tty);
 410                         }
 411                         // this doesn't actually push the data through unless tty->low_latency is set
 412                         tty_insert_flip_char(tty, data[i], 0);
 413                 }
 414                 tty_flip_buffer_push(tty);
 415         }
 416
 417         // someone sets the dev to 0 if the close method has been called
 418         port->interrupt_in_urb->dev = port->serial->dev;
 419
 420         result = usb_submit_urb( port->interrupt_in_urb, GFP_ATOMIC );
 421         dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
 422 }
 423
 424
 425 static void kobil_write_callback( struct urb *purb, struct pt_regs *regs )
 426 {
 427 }
 428
 429
 430 static int kobil_write (struct usb_serial_port *port, int from_user,
 431                         const unsigned char *buf, int count)
 432 {
 433         int length = 0;
 434         int result = 0;
 435         int todo = 0;
 436         struct kobil_private * priv;
 437
 438         if (count == 0) {
 439                 dbg("%s - port %d write request of 0 bytes", __FUNCTION__, port->number);
 440                 return 0;
 441         }
 442
 443         priv = usb_get_serial_port_data(port);
 444
 445         if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
 446                 dbg("%s - port %d Error: write request bigger than buffer size", __FUNCTION__, port->number);
 447                 return -ENOMEM;
 448         }
 449
 450         // Copy data to buffer
 451         if (from_user) {
 452                 if (copy_from_user(priv->buf + priv->filled, buf, count)) {
 453                         return -EFAULT;
 454                 }
 455         } else {
 456                 memcpy (priv->buf + priv->filled, buf, count);
 457         }
 458
 459         usb_serial_debug_data (__FILE__, __FUNCTION__, count, priv->buf + priv->filled);
 460
 461         priv->filled = priv->filled + count;
 462
 463
 464         // only send complete block. TWIN, KAAN SIM and adapter K use the same protocol.
 465         if ( ((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) ||
 466              ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4))) ) {
 467
 468                 // stop reading (except TWIN and KAAN SIM)
 469                 if ( (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) ) {
 470                         usb_unlink_urb( port->interrupt_in_urb );
 471                 }
 472
 473                 todo = priv->filled - priv->cur_pos;
 474
 475                 while(todo > 0) {
 476                         // max 8 byte in one urb (endpoint size)
 477                         length = (todo < 8) ? todo : 8;
 478                         // copy data to transfer buffer
 479                         memcpy(port->write_urb->transfer_buffer, priv->buf + priv->cur_pos, length );
 480                         usb_fill_int_urb( port->write_urb,
 481                                           port->serial->dev,
 482                                           usb_sndintpipe(port->serial->dev, priv->write_int_endpoint_address),
 483                                           port->write_urb->transfer_buffer,
 484                                           length,
 485                                           kobil_write_callback,
 486                                           port,
 487                                           8
 488                                 );
 489
 490                         priv->cur_pos = priv->cur_pos + length;
 491                         result = usb_submit_urb( port->write_urb, GFP_NOIO );
 492                         dbg("%s - port %d Send write URB returns: %i", __FUNCTION__, port->number, result);
 493                         todo = priv->filled - priv->cur_pos;
 494
 495                         if (todo > 0) {
 496                                 msleep(24);
 497                         }
 498
 499                 } // end while
 500
 501                 priv->filled = 0;
 502                 priv->cur_pos = 0;
 503
 504                 // someone sets the dev to 0 if the close method has been called
 505                 port->interrupt_in_urb->dev = port->serial->dev;
 506
 507                 // start reading (except TWIN and KAAN SIM)
 508                 if ( (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) ) {
 509                         // someone sets the dev to 0 if the close method has been called
 510                         port->interrupt_in_urb->dev = port->serial->dev;
 511
 512                         result = usb_submit_urb( port->interrupt_in_urb, GFP_NOIO );
 513                         dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
 514                 }
 515         }
 516         return count;
 517 }
 518
 519
 520 static int kobil_write_room (struct usb_serial_port *port)
 521 {
 522         //dbg("%s - port %d", __FUNCTION__, port->number);
 523         return 8;
 524 }
 525
 526
 527 static int kobil_tiocmget(struct usb_serial_port *port, struct file *file)
 528 {
 529         struct kobil_private * priv;
 530         int result;
 531         unsigned char *transfer_buffer;
 532         int transfer_buffer_length = 8;
 533
 534         priv = usb_get_serial_port_data(port);
 535         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
 536                 // This device doesn't support ioctl calls
 537                 return -EINVAL;
 538         }
 539
 540         // allocate memory for transfer buffer
 541         transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);
 542         if (!transfer_buffer) {
 543                 return -ENOMEM;
 544         }
 545         memset(transfer_buffer, 0, transfer_buffer_length);
 546
 547         result = usb_control_msg( port->serial->dev,
 548                                   usb_rcvctrlpipe(port->serial->dev, 0 ),
 549                                   SUSBCRequest_GetStatusLineState,
 550                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 551                                   0,
 552                                   0,
 553                                   transfer_buffer,
 554                                   transfer_buffer_length,
 555                                   KOBIL_TIMEOUT);
 556
 557         dbg("%s - port %d Send get_status_line_state URB returns: %i. Statusline: %02x",
 558             __FUNCTION__, port->number, result, transfer_buffer[0]);
 559
 560         if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0) {
 561                 priv->line_state |= TIOCM_DSR;
 562         } else {
 563                 priv->line_state &= ~TIOCM_DSR;
 564         }
 565
 566         kfree(transfer_buffer);
 567         return priv->line_state;
 568 }
 569
 570 static int  kobil_tiocmset(struct usb_serial_port *port, struct file *file,
 571                            unsigned int set, unsigned int clear)
 572 {
 573         struct kobil_private * priv;
 574         int result;
 575         int dtr = 0;
 576         int rts = 0;
 577         unsigned char *transfer_buffer;
 578         int transfer_buffer_length = 8;
 579
 580         priv = usb_get_serial_port_data(port);
 581         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
 582                 // This device doesn't support ioctl calls
 583                 return -EINVAL;
 584         }
 585
 586         // allocate memory for transfer buffer
 587         transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);
 588         if (! transfer_buffer) {
 589                 return -ENOMEM;
 590         }
 591         memset(transfer_buffer, 0, transfer_buffer_length);
 592
 593         if (set & TIOCM_RTS)
 594                 rts = 1;
 595         if (set & TIOCM_DTR)
 596                 dtr = 1;
 597         if (clear & TIOCM_RTS)
 598                 rts = 0;
 599         if (clear & TIOCM_DTR)
 600                 dtr = 0;
 601
 602         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
 603                 if (dtr != 0)
 604                         dbg("%s - port %d Setting DTR", __FUNCTION__, port->number);
 605                 else
 606                         dbg("%s - port %d Clearing DTR", __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                                           ((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
 612                                           0,
 613                                           transfer_buffer,
 614                                           0,
 615                                           KOBIL_TIMEOUT);
 616         } else {
 617                 if (rts != 0)
 618                         dbg("%s - port %d Setting RTS", __FUNCTION__, port->number);
 619                 else
 620                         dbg("%s - port %d Clearing RTS", __FUNCTION__, port->number);
 621                 result = usb_control_msg( port->serial->dev,
 622                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 623                                           SUSBCRequest_SetStatusLinesOrQueues,
 624                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 625                                           ((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
 626                                           0,
 627                                           transfer_buffer,
 628                                           0,
 629                                           KOBIL_TIMEOUT);
 630         }
 631         dbg("%s - port %d Send set_status_line URB returns: %i", __FUNCTION__, port->number, result);
 632         kfree(transfer_buffer);
 633         return (result < 0) ? result : 0;
 634 }
 635
 636
 637 static int  kobil_ioctl(struct usb_serial_port *port, struct file *file,
 638                         unsigned int cmd, unsigned long arg)
 639 {
 640         struct kobil_private * priv;
 641         int result;
 642         unsigned short urb_val = 0;
 643         unsigned char *transfer_buffer;
 644         int transfer_buffer_length = 8;
 645         char *settings;
 646
 647         priv = usb_get_serial_port_data(port);
 648         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
 649                 // This device doesn't support ioctl calls
 650                 return 0;
 651         }
 652
 653         switch (cmd) {
 654         case TCGETS:   // 0x5401
 655                 result = verify_area(VERIFY_WRITE, (void *)arg, sizeof(struct termios));
 656                 if (result) {
 657                         dbg("%s - port %d Error in verify_area", __FUNCTION__, port->number);
 658                         return(result);
 659                 }
 660                 if (kernel_termios_to_user_termios((struct termios *)arg,
 661                                                    &priv->internal_termios))
 662                         return -EFAULT;
 663                 return 0;
 664
 665         case TCSETS:   // 0x5402
 666                 if (!(port->tty->termios)) {
 667                         dbg("%s - port %d Error: port->tty->termios is NULL", __FUNCTION__, port->number);
 668                         return -ENOTTY;
 669                 }
 670                 result = verify_area(VERIFY_READ, (void *)arg, sizeof(struct termios));
 671                 if (result) {
 672                         dbg("%s - port %d Error in verify_area", __FUNCTION__, port->number);
 673                         return result;
 674                 }
 675                 if (user_termios_to_kernel_termios(&priv->internal_termios,
 676                                                    (struct termios *)arg))
 677                         return -EFAULT;
 678
 679                 settings = (unsigned char *) kmalloc(50, GFP_KERNEL);
 680                 if (! settings) {
 681                         return -ENOBUFS;
 682                 }
 683                 memset(settings, 0, 50);
 684
 685                 switch (priv->internal_termios.c_cflag & CBAUD) {
 686                 case B1200:
 687                         urb_val = SUSBCR_SBR_1200;
 688                         strcat(settings, "1200 ");
 689                         break;
 690                 case B9600:
 691                 default:
 692                         urb_val = SUSBCR_SBR_9600;
 693                         strcat(settings, "9600 ");
 694                         break;
 695                 }
 696
 697                 urb_val |= (priv->internal_termios.c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits : SUSBCR_SPASB_1StopBit;
 698                 strcat(settings, (priv->internal_termios.c_cflag & CSTOPB) ? "2 StopBits " : "1 StopBit ");
 699
 700                 if (priv->internal_termios.c_cflag & PARENB) {
 701                         if  (priv->internal_termios.c_cflag & PARODD) {
 702                                 urb_val |= SUSBCR_SPASB_OddParity;
 703                                 strcat(settings, "Odd Parity");
 704                         } else {
 705                                 urb_val |= SUSBCR_SPASB_EvenParity;
 706                                 strcat(settings, "Even Parity");
 707                         }
 708                 } else {
 709                         urb_val |= SUSBCR_SPASB_NoParity;
 710                         strcat(settings, "No Parity");
 711                 }
 712                 dbg("%s - port %d setting port to: %s", __FUNCTION__, port->number, settings );
 713
 714                 result = usb_control_msg( port->serial->dev,
 715                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 716                                           SUSBCRequest_SetBaudRateParityAndStopBits,
 717                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 718                                           urb_val,
 719                                           0,
 720                                           settings,
 721                                           0,
 722                                           KOBIL_TIMEOUT
 723                         );
 724
 725                 dbg("%s - port %d Send set_baudrate URB returns: %i", __FUNCTION__, port->number, result);
 726                 kfree(settings);
 727                 return 0;
 728
 729         case TCFLSH:   // 0x540B
 730                 transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);
 731                 if (! transfer_buffer) {
 732                         return -ENOBUFS;
 733                 }
 734
 735                 result = usb_control_msg( port->serial->dev,
 736                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 737                                           SUSBCRequest_Misc,
 738                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 739                                           SUSBCR_MSC_ResetAllQueues,
 740                                           0,
 741                                           NULL,//transfer_buffer,
 742                                           0,
 743                                           KOBIL_TIMEOUT
 744                         );
 745
 746                 dbg("%s - port %d Send reset_all_queues (FLUSH) URB returns: %i", __FUNCTION__, port->number, result);
 747
 748                 kfree(transfer_buffer);
 749                 return ((result < 0) ? -EFAULT : 0);
 750
 751         }
 752         return -ENOIOCTLCMD;
 753 }
 754
 755
 756 static int __init kobil_init (void)
 757 {
 758         int retval;
 759         retval = usb_serial_register(&kobil_device);
 760         if (retval)
 761                 goto failed_usb_serial_register;
 762         retval = usb_register(&kobil_driver);
 763         if (retval)
 764                 goto failed_usb_register;
 765
 766         info(DRIVER_VERSION " " DRIVER_AUTHOR);
 767         info(DRIVER_DESC);
 768
 769         return 0;
 770 failed_usb_register:
 771         usb_serial_deregister(&kobil_device);
 772 failed_usb_serial_register:
 773         return retval;
 774 }
 775
 776
 777 static void __exit kobil_exit (void)
 778 {
 779         usb_deregister (&kobil_driver);
 780         usb_serial_deregister (&kobil_device);
 781 }
 782
 783 module_init(kobil_init);
 784 module_exit(kobil_exit);
 785
 786 MODULE_AUTHOR( DRIVER_AUTHOR );
 787 MODULE_DESCRIPTION( DRIVER_DESC );
 788 MODULE_LICENSE( "GPL" );
 789
 790 MODULE_PARM(debug, "i");
 791 MODULE_PARM_DESC(debug, "Debug enabled or not");