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         .no_dynamic_id =        1,
 106 };
 107
 108
 109 static struct usb_serial_driver kobil_device = {
 110         .driver = {
 111                 .owner =        THIS_MODULE,
 112                 .name =         "kobil",
 113         },
 114         .description =          "KOBIL USB smart card terminal",
 115         .id_table =             id_table,
 116         .num_interrupt_in =     NUM_DONT_CARE,
 117         .num_bulk_in =          0,
 118         .num_bulk_out =         0,
 119         .num_ports =            1,
 120         .attach =               kobil_startup,
 121         .shutdown =             kobil_shutdown,
 122         .ioctl =                kobil_ioctl,
 123         .tiocmget =             kobil_tiocmget,
 124         .tiocmset =             kobil_tiocmset,
 125         .open =                 kobil_open,
 126         .close =                kobil_close,
 127         .write =                kobil_write,
 128         .write_room =           kobil_write_room,
 129         .read_int_callback =    kobil_read_int_callback,
 130 };
 131
 132
 133 struct kobil_private {
 134         int write_int_endpoint_address;
 135         int read_int_endpoint_address;
 136         unsigned char buf[KOBIL_BUF_LENGTH]; // buffer for the APDU to send
 137         int filled;  // index of the last char in buf
 138         int cur_pos; // index of the next char to send in buf
 139         __u16 device_type;
 140         int line_state;
 141         struct termios internal_termios;
 142 };
 143
 144
 145 static int kobil_startup (struct usb_serial *serial)
 146 {
 147         int i;
 148         struct kobil_private *priv;
 149         struct usb_device *pdev;
 150         struct usb_host_config *actconfig;
 151         struct usb_interface *interface;
 152         struct usb_host_interface *altsetting;
 153         struct usb_host_endpoint *endpoint;
 154
 155         priv = kmalloc(sizeof(struct kobil_private), GFP_KERNEL);
 156         if (!priv){
 157                 return -ENOMEM;
 158         }
 159
 160         priv->filled = 0;
 161         priv->cur_pos = 0;
 162         priv->device_type = le16_to_cpu(serial->dev->descriptor.idProduct);
 163         priv->line_state = 0;
 164
 165         switch (priv->device_type){
 166         case KOBIL_ADAPTER_B_PRODUCT_ID:
 167                 printk(KERN_DEBUG "KOBIL B1 PRO / KAAN PRO detected\n");
 168                 break;
 169         case KOBIL_ADAPTER_K_PRODUCT_ID:
 170                 printk(KERN_DEBUG "KOBIL KAAN Standard Plus / SecOVID Reader Plus detected\n");
 171                 break;
 172         case KOBIL_USBTWIN_PRODUCT_ID:
 173                 printk(KERN_DEBUG "KOBIL USBTWIN detected\n");
 174                 break;
 175         case KOBIL_KAAN_SIM_PRODUCT_ID:
 176                 printk(KERN_DEBUG "KOBIL KAAN SIM detected\n");
 177                 break;
 178         }
 179         usb_set_serial_port_data(serial->port[0], priv);
 180
 181         // search for the necessary endpoints
 182         pdev = serial->dev;
 183         actconfig = pdev->actconfig;
 184         interface = actconfig->interface[0];
 185         altsetting = interface->cur_altsetting;
 186         endpoint = altsetting->endpoint;
 187
 188         for (i = 0; i < altsetting->desc.bNumEndpoints; i++) {
 189                 endpoint = &altsetting->endpoint[i];
 190                 if (((endpoint->desc.bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) &&
 191                     ((endpoint->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)) {
 192                         dbg("%s Found interrupt out endpoint. Address: %d", __FUNCTION__, endpoint->desc.bEndpointAddress);
 193                         priv->write_int_endpoint_address = endpoint->desc.bEndpointAddress;
 194                 }
 195                 if (((endpoint->desc.bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) &&
 196                     ((endpoint->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)) {
 197                         dbg("%s Found interrupt in  endpoint. Address: %d", __FUNCTION__, endpoint->desc.bEndpointAddress);
 198                         priv->read_int_endpoint_address = endpoint->desc.bEndpointAddress;
 199                 }
 200         }
 201         return 0;
 202 }
 203
 204
 205 static void kobil_shutdown (struct usb_serial *serial)
 206 {
 207         int i;
 208         dbg("%s - port %d", __FUNCTION__, serial->port[0]->number);
 209
 210         for (i=0; i < serial->num_ports; ++i) {
 211                 while (serial->port[i]->open_count > 0) {
 212                         kobil_close (serial->port[i], NULL);
 213                 }
 214                 kfree(usb_get_serial_port_data(serial->port[i]));
 215                 usb_set_serial_port_data(serial->port[i], NULL);
 216         }
 217 }
 218
 219
 220 static int kobil_open (struct usb_serial_port *port, struct file *filp)
 221 {
 222         int i, result = 0;
 223         struct kobil_private *priv;
 224         unsigned char *transfer_buffer;
 225         int transfer_buffer_length = 8;
 226         int write_urb_transfer_buffer_length = 8;
 227
 228         dbg("%s - port %d", __FUNCTION__, port->number);
 229         priv = usb_get_serial_port_data(port);
 230         priv->line_state = 0;
 231
 232         // someone sets the dev to 0 if the close method has been called
 233         port->interrupt_in_urb->dev = port->serial->dev;
 234
 235
 236         /* force low_latency on so that our tty_push actually forces
 237          * the data through, otherwise it is scheduled, and with high
 238          * data rates (like with OHCI) data can get lost.
 239          */
 240         port->tty->low_latency = 1;
 241
 242         // without this, every push_tty_char is echoed :-(
 243         port->tty->termios->c_lflag = 0;
 244         port->tty->termios->c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN | XCASE);
 245         port->tty->termios->c_iflag = IGNBRK | IGNPAR | IXOFF;
 246         port->tty->termios->c_oflag &= ~ONLCR; // do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D)
 247
 248         // set up internal termios structure
 249         priv->internal_termios.c_iflag = port->tty->termios->c_iflag;
 250         priv->internal_termios.c_oflag = port->tty->termios->c_oflag;
 251         priv->internal_termios.c_cflag = port->tty->termios->c_cflag;
 252         priv->internal_termios.c_lflag = port->tty->termios->c_lflag;
 253
 254         for (i=0; i<NCCS; i++) {
 255                 priv->internal_termios.c_cc[i] = port->tty->termios->c_cc[i];
 256         }
 257
 258         // allocate memory for transfer buffer
 259         transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);
 260         if (! transfer_buffer) {
 261                 return -ENOMEM;
 262         } else {
 263                 memset(transfer_buffer, 0, transfer_buffer_length);
 264         }
 265
 266         // allocate write_urb
 267         if (!port->write_urb) {
 268                 dbg("%s - port %d  Allocating port->write_urb", __FUNCTION__, port->number);
 269                 port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
 270                 if (!port->write_urb) {
 271                         dbg("%s - port %d usb_alloc_urb failed", __FUNCTION__, port->number);
 272                         kfree(transfer_buffer);
 273                         return -ENOMEM;
 274                 }
 275         }
 276
 277         // allocate memory for write_urb transfer buffer
 278         port->write_urb->transfer_buffer = (unsigned char *) kmalloc(write_urb_transfer_buffer_length, GFP_KERNEL);
 279         if (! port->write_urb->transfer_buffer) {
 280                 kfree(transfer_buffer);
 281                 usb_free_urb(port->write_urb);
 282                 port->write_urb = NULL;
 283                 return -ENOMEM;
 284         }
 285
 286         // get hardware version
 287         result = usb_control_msg( port->serial->dev,
 288                                   usb_rcvctrlpipe(port->serial->dev, 0 ),
 289                                   SUSBCRequest_GetMisc,
 290                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 291                                   SUSBCR_MSC_GetHWVersion,
 292                                   0,
 293                                   transfer_buffer,
 294                                   transfer_buffer_length,
 295                                   KOBIL_TIMEOUT
 296                 );
 297         dbg("%s - port %d Send get_HW_version URB returns: %i", __FUNCTION__, port->number, result);
 298         dbg("Harware version: %i.%i.%i", transfer_buffer[0], transfer_buffer[1], transfer_buffer[2] );
 299
 300         // get firmware version
 301         result = usb_control_msg( port->serial->dev,
 302                                   usb_rcvctrlpipe(port->serial->dev, 0 ),
 303                                   SUSBCRequest_GetMisc,
 304                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 305                                   SUSBCR_MSC_GetFWVersion,
 306                                   0,
 307                                   transfer_buffer,
 308                                   transfer_buffer_length,
 309                                   KOBIL_TIMEOUT
 310                 );
 311         dbg("%s - port %d Send get_FW_version URB returns: %i", __FUNCTION__, port->number, result);
 312         dbg("Firmware version: %i.%i.%i", transfer_buffer[0], transfer_buffer[1], transfer_buffer[2] );
 313
 314         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
 315                 // Setting Baudrate, Parity and Stopbits
 316                 result = usb_control_msg( port->serial->dev,
 317                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 318                                           SUSBCRequest_SetBaudRateParityAndStopBits,
 319                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 320                                           SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity | SUSBCR_SPASB_1StopBit,
 321                                           0,
 322                                           transfer_buffer,
 323                                           0,
 324                                           KOBIL_TIMEOUT
 325                         );
 326                 dbg("%s - port %d Send set_baudrate URB returns: %i", __FUNCTION__, port->number, result);
 327
 328                 // reset all queues
 329                 result = usb_control_msg( port->serial->dev,
 330                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 331                                           SUSBCRequest_Misc,
 332                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 333                                           SUSBCR_MSC_ResetAllQueues,
 334                                           0,
 335                                           transfer_buffer,
 336                                           0,
 337                                           KOBIL_TIMEOUT
 338                         );
 339                 dbg("%s - port %d Send reset_all_queues URB returns: %i", __FUNCTION__, port->number, result);
 340         }
 341         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 342             priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 343                 // start reading (Adapter B 'cause PNP string)
 344                 result = usb_submit_urb( port->interrupt_in_urb, GFP_ATOMIC  );
 345                 dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
 346         }
 347
 348         kfree(transfer_buffer);
 349         return 0;
 350 }
 351
 352
 353 static void kobil_close (struct usb_serial_port *port, struct file *filp)
 354 {
 355         dbg("%s - port %d", __FUNCTION__, port->number);
 356
 357         if (port->write_urb) {
 358                 usb_kill_urb(port->write_urb);
 359                 usb_free_urb( port->write_urb );
 360                 port->write_urb = NULL;
 361         }
 362         if (port->interrupt_in_urb)
 363                 usb_kill_urb(port->interrupt_in_urb);
 364 }
 365
 366
 367 static void kobil_read_int_callback( struct urb *purb, struct pt_regs *regs)
 368 {
 369         int i;
 370         int result;
 371         struct usb_serial_port *port = (struct usb_serial_port *) purb->context;
 372         struct tty_struct *tty;
 373         unsigned char *data = purb->transfer_buffer;
 374 //      char *dbg_data;
 375
 376         dbg("%s - port %d", __FUNCTION__, port->number);
 377
 378         if (purb->status) {
 379                 dbg("%s - port %d Read int status not zero: %d", __FUNCTION__, port->number, purb->status);
 380                 return;
 381         }
 382
 383         tty = port->tty;
 384         if (purb->actual_length) {
 385
 386                 // BEGIN DEBUG
 387                 /*
 388                   dbg_data = (unsigned char *) kmalloc((3 *  purb->actual_length + 10) * sizeof(char), GFP_KERNEL);
 389                   if (! dbg_data) {
 390                   return;
 391                   }
 392                   memset(dbg_data, 0, (3 *  purb->actual_length + 10));
 393                   for (i = 0; i < purb->actual_length; i++) {
 394                   sprintf(dbg_data +3*i, "%02X ", data[i]);
 395                   }
 396                   dbg(" <-- %s", dbg_data );
 397                   kfree(dbg_data);
 398                 */
 399                 // END DEBUG
 400
 401                 for (i = 0; i < purb->actual_length; ++i) {
 402                         // if we insert more than TTY_FLIPBUF_SIZE characters, we drop them.
 403                         if(tty->flip.count >= TTY_FLIPBUF_SIZE) {
 404                                 tty_flip_buffer_push(tty);
 405                         }
 406                         // this doesn't actually push the data through unless tty->low_latency is set
 407                         tty_insert_flip_char(tty, data[i], 0);
 408                 }
 409                 tty_flip_buffer_push(tty);
 410         }
 411
 412         // someone sets the dev to 0 if the close method has been called
 413         port->interrupt_in_urb->dev = port->serial->dev;
 414
 415         result = usb_submit_urb( port->interrupt_in_urb, GFP_ATOMIC );
 416         dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
 417 }
 418
 419
 420 static void kobil_write_callback( struct urb *purb, struct pt_regs *regs )
 421 {
 422 }
 423
 424
 425 static int kobil_write (struct usb_serial_port *port,
 426                         const unsigned char *buf, int count)
 427 {
 428         int length = 0;
 429         int result = 0;
 430         int todo = 0;
 431         struct kobil_private * priv;
 432
 433         if (count == 0) {
 434                 dbg("%s - port %d write request of 0 bytes", __FUNCTION__, port->number);
 435                 return 0;
 436         }
 437
 438         priv = usb_get_serial_port_data(port);
 439
 440         if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
 441                 dbg("%s - port %d Error: write request bigger than buffer size", __FUNCTION__, port->number);
 442                 return -ENOMEM;
 443         }
 444
 445         // Copy data to buffer
 446         memcpy (priv->buf + priv->filled, buf, count);
 447
 448         usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, priv->buf + priv->filled);
 449
 450         priv->filled = priv->filled + count;
 451
 452
 453         // only send complete block. TWIN, KAAN SIM and adapter K use the same protocol.
 454         if ( ((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) ||
 455              ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4))) ) {
 456
 457                 // stop reading (except TWIN and KAAN SIM)
 458                 if ( (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) )
 459                         usb_kill_urb(port->interrupt_in_urb);
 460
 461                 todo = priv->filled - priv->cur_pos;
 462
 463                 while(todo > 0) {
 464                         // max 8 byte in one urb (endpoint size)
 465                         length = (todo < 8) ? todo : 8;
 466                         // copy data to transfer buffer
 467                         memcpy(port->write_urb->transfer_buffer, priv->buf + priv->cur_pos, length );
 468                         usb_fill_int_urb( port->write_urb,
 469                                           port->serial->dev,
 470                                           usb_sndintpipe(port->serial->dev, priv->write_int_endpoint_address),
 471                                           port->write_urb->transfer_buffer,
 472                                           length,
 473                                           kobil_write_callback,
 474                                           port,
 475                                           8
 476                                 );
 477
 478                         priv->cur_pos = priv->cur_pos + length;
 479                         result = usb_submit_urb( port->write_urb, GFP_NOIO );
 480                         dbg("%s - port %d Send write URB returns: %i", __FUNCTION__, port->number, result);
 481                         todo = priv->filled - priv->cur_pos;
 482
 483                         if (todo > 0) {
 484                                 msleep(24);
 485                         }
 486
 487                 } // end while
 488
 489                 priv->filled = 0;
 490                 priv->cur_pos = 0;
 491
 492                 // someone sets the dev to 0 if the close method has been called
 493                 port->interrupt_in_urb->dev = port->serial->dev;
 494
 495                 // start reading (except TWIN and KAAN SIM)
 496                 if ( (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) ) {
 497                         // someone sets the dev to 0 if the close method has been called
 498                         port->interrupt_in_urb->dev = port->serial->dev;
 499
 500                         result = usb_submit_urb( port->interrupt_in_urb, GFP_NOIO );
 501                         dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
 502                 }
 503         }
 504         return count;
 505 }
 506
 507
 508 static int kobil_write_room (struct usb_serial_port *port)
 509 {
 510         //dbg("%s - port %d", __FUNCTION__, port->number);
 511         return 8;
 512 }
 513
 514
 515 static int kobil_tiocmget(struct usb_serial_port *port, struct file *file)
 516 {
 517         struct kobil_private * priv;
 518         int result;
 519         unsigned char *transfer_buffer;
 520         int transfer_buffer_length = 8;
 521
 522         priv = usb_get_serial_port_data(port);
 523         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
 524                 // This device doesn't support ioctl calls
 525                 return -EINVAL;
 526         }
 527
 528         // allocate memory for transfer buffer
 529         transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);
 530         if (!transfer_buffer) {
 531                 return -ENOMEM;
 532         }
 533         memset(transfer_buffer, 0, transfer_buffer_length);
 534
 535         result = usb_control_msg( port->serial->dev,
 536                                   usb_rcvctrlpipe(port->serial->dev, 0 ),
 537                                   SUSBCRequest_GetStatusLineState,
 538                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 539                                   0,
 540                                   0,
 541                                   transfer_buffer,
 542                                   transfer_buffer_length,
 543                                   KOBIL_TIMEOUT);
 544
 545         dbg("%s - port %d Send get_status_line_state URB returns: %i. Statusline: %02x",
 546             __FUNCTION__, port->number, result, transfer_buffer[0]);
 547
 548         if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0) {
 549                 priv->line_state |= TIOCM_DSR;
 550         } else {
 551                 priv->line_state &= ~TIOCM_DSR;
 552         }
 553
 554         kfree(transfer_buffer);
 555         return priv->line_state;
 556 }
 557
 558 static int  kobil_tiocmset(struct usb_serial_port *port, struct file *file,
 559                            unsigned int set, unsigned int clear)
 560 {
 561         struct kobil_private * priv;
 562         int result;
 563         int dtr = 0;
 564         int rts = 0;
 565         unsigned char *transfer_buffer;
 566         int transfer_buffer_length = 8;
 567
 568         priv = usb_get_serial_port_data(port);
 569         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
 570                 // This device doesn't support ioctl calls
 571                 return -EINVAL;
 572         }
 573
 574         // allocate memory for transfer buffer
 575         transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);
 576         if (! transfer_buffer) {
 577                 return -ENOMEM;
 578         }
 579         memset(transfer_buffer, 0, transfer_buffer_length);
 580
 581         if (set & TIOCM_RTS)
 582                 rts = 1;
 583         if (set & TIOCM_DTR)
 584                 dtr = 1;
 585         if (clear & TIOCM_RTS)
 586                 rts = 0;
 587         if (clear & TIOCM_DTR)
 588                 dtr = 0;
 589
 590         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
 591                 if (dtr != 0)
 592                         dbg("%s - port %d Setting DTR", __FUNCTION__, port->number);
 593                 else
 594                         dbg("%s - port %d Clearing DTR", __FUNCTION__, port->number);
 595                 result = usb_control_msg( port->serial->dev,
 596                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 597                                           SUSBCRequest_SetStatusLinesOrQueues,
 598                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 599                                           ((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
 600                                           0,
 601                                           transfer_buffer,
 602                                           0,
 603                                           KOBIL_TIMEOUT);
 604         } else {
 605                 if (rts != 0)
 606                         dbg("%s - port %d Setting RTS", __FUNCTION__, port->number);
 607                 else
 608                         dbg("%s - port %d Clearing RTS", __FUNCTION__, port->number);
 609                 result = usb_control_msg( port->serial->dev,
 610                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 611                                           SUSBCRequest_SetStatusLinesOrQueues,
 612                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 613                                           ((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
 614                                           0,
 615                                           transfer_buffer,
 616                                           0,
 617                                           KOBIL_TIMEOUT);
 618         }
 619         dbg("%s - port %d Send set_status_line URB returns: %i", __FUNCTION__, port->number, result);
 620         kfree(transfer_buffer);
 621         return (result < 0) ? result : 0;
 622 }
 623
 624
 625 static int  kobil_ioctl(struct usb_serial_port *port, struct file *file,
 626                         unsigned int cmd, unsigned long arg)
 627 {
 628         struct kobil_private * priv;
 629         int result;
 630         unsigned short urb_val = 0;
 631         unsigned char *transfer_buffer;
 632         int transfer_buffer_length = 8;
 633         char *settings;
 634         void __user *user_arg = (void __user *)arg;
 635
 636         priv = usb_get_serial_port_data(port);
 637         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
 638                 // This device doesn't support ioctl calls
 639                 return 0;
 640         }
 641
 642         switch (cmd) {
 643         case TCGETS:   // 0x5401
 644                 if (!access_ok(VERIFY_WRITE, user_arg, sizeof(struct termios))) {
 645                         dbg("%s - port %d Error in access_ok", __FUNCTION__, port->number);
 646                         return -EFAULT;
 647                 }
 648                 if (kernel_termios_to_user_termios((struct termios __user *)arg,
 649                                                    &priv->internal_termios))
 650                         return -EFAULT;
 651                 return 0;
 652
 653         case TCSETS:   // 0x5402
 654                 if (!(port->tty->termios)) {
 655                         dbg("%s - port %d Error: port->tty->termios is NULL", __FUNCTION__, port->number);
 656                         return -ENOTTY;
 657                 }
 658                 if (!access_ok(VERIFY_READ, user_arg, sizeof(struct termios))) {
 659                         dbg("%s - port %d Error in access_ok", __FUNCTION__, port->number);
 660                         return -EFAULT;
 661                 }
 662                 if (user_termios_to_kernel_termios(&priv->internal_termios,
 663                                                    (struct termios __user *)arg))
 664                         return -EFAULT;
 665
 666                 settings = (unsigned char *) kmalloc(50, GFP_KERNEL);
 667                 if (! settings) {
 668                         return -ENOBUFS;
 669                 }
 670                 memset(settings, 0, 50);
 671
 672                 switch (priv->internal_termios.c_cflag & CBAUD) {
 673                 case B1200:
 674                         urb_val = SUSBCR_SBR_1200;
 675                         strcat(settings, "1200 ");
 676                         break;
 677                 case B9600:
 678                 default:
 679                         urb_val = SUSBCR_SBR_9600;
 680                         strcat(settings, "9600 ");
 681                         break;
 682                 }
 683
 684                 urb_val |= (priv->internal_termios.c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits : SUSBCR_SPASB_1StopBit;
 685                 strcat(settings, (priv->internal_termios.c_cflag & CSTOPB) ? "2 StopBits " : "1 StopBit ");
 686
 687                 if (priv->internal_termios.c_cflag & PARENB) {
 688                         if  (priv->internal_termios.c_cflag & PARODD) {
 689                                 urb_val |= SUSBCR_SPASB_OddParity;
 690                                 strcat(settings, "Odd Parity");
 691                         } else {
 692                                 urb_val |= SUSBCR_SPASB_EvenParity;
 693                                 strcat(settings, "Even Parity");
 694                         }
 695                 } else {
 696                         urb_val |= SUSBCR_SPASB_NoParity;
 697                         strcat(settings, "No Parity");
 698                 }
 699                 dbg("%s - port %d setting port to: %s", __FUNCTION__, port->number, settings );
 700
 701                 result = usb_control_msg( port->serial->dev,
 702                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 703                                           SUSBCRequest_SetBaudRateParityAndStopBits,
 704                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 705                                           urb_val,
 706                                           0,
 707                                           settings,
 708                                           0,
 709                                           KOBIL_TIMEOUT
 710                         );
 711
 712                 dbg("%s - port %d Send set_baudrate URB returns: %i", __FUNCTION__, port->number, result);
 713                 kfree(settings);
 714                 return 0;
 715
 716         case TCFLSH:   // 0x540B
 717                 transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);
 718                 if (! transfer_buffer) {
 719                         return -ENOBUFS;
 720                 }
 721
 722                 result = usb_control_msg( port->serial->dev,
 723                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 724                                           SUSBCRequest_Misc,
 725                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 726                                           SUSBCR_MSC_ResetAllQueues,
 727                                           0,
 728                                           NULL,//transfer_buffer,
 729                                           0,
 730                                           KOBIL_TIMEOUT
 731                         );
 732
 733                 dbg("%s - port %d Send reset_all_queues (FLUSH) URB returns: %i", __FUNCTION__, port->number, result);
 734
 735                 kfree(transfer_buffer);
 736                 return ((result < 0) ? -EFAULT : 0);
 737
 738         }
 739         return -ENOIOCTLCMD;
 740 }
 741
 742
 743 static int __init kobil_init (void)
 744 {
 745         int retval;
 746         retval = usb_serial_register(&kobil_device);
 747         if (retval)
 748                 goto failed_usb_serial_register;
 749         retval = usb_register(&kobil_driver);
 750         if (retval)
 751                 goto failed_usb_register;
 752
 753         info(DRIVER_VERSION " " DRIVER_AUTHOR);
 754         info(DRIVER_DESC);
 755
 756         return 0;
 757 failed_usb_register:
 758         usb_serial_deregister(&kobil_device);
 759 failed_usb_serial_register:
 760         return retval;
 761 }
 762
 763
 764 static void __exit kobil_exit (void)
 765 {
 766         usb_deregister (&kobil_driver);
 767         usb_serial_deregister (&kobil_device);
 768 }
 769
 770 module_init(kobil_init);
 771 module_exit(kobil_exit);
 772
 773 MODULE_AUTHOR( DRIVER_AUTHOR );
 774 MODULE_DESCRIPTION( DRIVER_DESC );
 775 MODULE_LICENSE( "GPL" );
 776
 777 module_param(debug, bool, S_IRUGO | S_IWUSR);
 778 MODULE_PARM_DESC(debug, "Debug enabled or not");