drivers/usb/serial/kobil_sct.c

   1 /*
   2  *  KOBIL USB Smart Card Terminal Driver
   3  *
   4  *  Copyright (C) 2002  KOBIL Systems GmbH
   5  *  Author: Thomas Wahrenbruch
   6  *
   7  *  Contact: linuxusb@kobil.de
   8  *
   9  *  This program is largely derived from work by the linux-usb group
  10  *  and associated source files.  Please see the usb/serial files for
  11  *  individual credits and copyrights.
  12  *
  13  *  This program is free software; you can redistribute it and/or modify
  14  *  it under the terms of the GNU General Public License as published by
  15  *  the Free Software Foundation; either version 2 of the License, or
  16  *  (at your option) any later version.
  17  *
  18  *  Thanks to Greg Kroah-Hartman (greg@kroah.com) for his help and
  19  *  patience.
  20  *
  21  * Supported readers: USB TWIN, KAAN Standard Plus and SecOVID Reader Plus
  22  * (Adapter K), B1 Professional and KAAN Professional (Adapter B)
  23  *
  24  * (21/05/2004) tw
  25  *      Fix bug with P'n'P readers
  26  *
  27  * (28/05/2003) tw
  28  *      Add support for KAAN SIM
  29  *
  30  * (12/09/2002) tw
  31  *      Adapted to 2.5.
  32  *
  33  * (11/08/2002) tw
  34  *      Initial version.
  35  */
  36
  37
  38 #include <linux/kernel.h>
  39 #include <linux/errno.h>
  40 #include <linux/init.h>
  41 #include <linux/slab.h>
  42 #include <linux/tty.h>
  43 #include <linux/tty_driver.h>
  44 #include <linux/tty_flip.h>
  45 #include <linux/module.h>
  46 #include <linux/spinlock.h>
  47 #include <asm/uaccess.h>
  48 #include <linux/usb.h>
  49 #include <linux/usb/serial.h>
  50 #include <linux/ioctl.h>
  51 #include "kobil_sct.h"
  52
  53 static int debug;
  54
  55 /* Version Information */
  56 #define DRIVER_VERSION "21/05/2004"
  57 #define DRIVER_AUTHOR "KOBIL Systems GmbH - http://www.kobil.com"
  58 #define DRIVER_DESC "KOBIL USB Smart Card Terminal Driver (experimental)"
  59
  60 #define KOBIL_VENDOR_ID                 0x0D46
  61 #define KOBIL_ADAPTER_B_PRODUCT_ID      0x2011
  62 #define KOBIL_ADAPTER_K_PRODUCT_ID      0x2012
  63 #define KOBIL_USBTWIN_PRODUCT_ID        0x0078
  64 #define KOBIL_KAAN_SIM_PRODUCT_ID       0x0081
  65
  66 #define KOBIL_TIMEOUT           500
  67 #define KOBIL_BUF_LENGTH        300
  68
  69
  70 /* Function prototypes */
  71 static int  kobil_startup (struct usb_serial *serial);
  72 static void kobil_shutdown (struct usb_serial *serial);
  73 static int  kobil_open (struct usb_serial_port *port, struct file *filp);
  74 static void kobil_close (struct usb_serial_port *port, struct file *filp);
  75 static int  kobil_write (struct usb_serial_port *port,
  76                          const unsigned char *buf, int count);
  77 static int  kobil_write_room(struct usb_serial_port *port);
  78 static int  kobil_ioctl(struct usb_serial_port *port, struct file *file,
  79                         unsigned int cmd, unsigned long arg);
  80 static int  kobil_tiocmget(struct usb_serial_port *port, struct file *file);
  81 static int  kobil_tiocmset(struct usb_serial_port *port, struct file *file,
  82                            unsigned int set, unsigned int clear);
  83 static void kobil_read_int_callback( struct urb *urb );
  84 static void kobil_write_callback( struct urb *purb );
  85
  86
  87 static struct usb_device_id id_table [] = {
  88         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_B_PRODUCT_ID) },
  89         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_K_PRODUCT_ID) },
  90         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_USBTWIN_PRODUCT_ID) },
  91         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_KAAN_SIM_PRODUCT_ID) },
  92         { }                     /* Terminating entry */
  93 };
  94
  95
  96 MODULE_DEVICE_TABLE (usb, id_table);
  97
  98 static struct usb_driver kobil_driver = {
  99         .name =         "kobil",
 100         .probe =        usb_serial_probe,
 101         .disconnect =   usb_serial_disconnect,
 102         .id_table =     id_table,
 103         .no_dynamic_id =        1,
 104 };
 105
 106
 107 static struct usb_serial_driver kobil_device = {
 108         .driver = {
 109                 .owner =        THIS_MODULE,
 110                 .name =         "kobil",
 111         },
 112         .description =          "KOBIL USB smart card terminal",
 113         .usb_driver =           &kobil_driver,
 114         .id_table =             id_table,
 115         .num_interrupt_in =     NUM_DONT_CARE,
 116         .num_bulk_in =          0,
 117         .num_bulk_out =         0,
 118         .num_ports =            1,
 119         .attach =               kobil_startup,
 120         .shutdown =             kobil_shutdown,
 121         .ioctl =                kobil_ioctl,
 122         .tiocmget =             kobil_tiocmget,
 123         .tiocmset =             kobil_tiocmset,
 124         .open =                 kobil_open,
 125         .close =                kobil_close,
 126         .write =                kobil_write,
 127         .write_room =           kobil_write_room,
 128         .read_int_callback =    kobil_read_int_callback,
 129 };
 130
 131
 132 struct kobil_private {
 133         int write_int_endpoint_address;
 134         int read_int_endpoint_address;
 135         unsigned char buf[KOBIL_BUF_LENGTH]; // buffer for the APDU to send
 136         int filled;  // index of the last char in buf
 137         int cur_pos; // index of the next char to send in buf
 138         __u16 device_type;
 139         int line_state;
 140         struct ktermios internal_termios;
 141 };
 142
 143
 144 static int kobil_startup (struct usb_serial *serial)
 145 {
 146         int i;
 147         struct kobil_private *priv;
 148         struct usb_device *pdev;
 149         struct usb_host_config *actconfig;
 150         struct usb_interface *interface;
 151         struct usb_host_interface *altsetting;
 152         struct usb_host_endpoint *endpoint;
 153
 154         priv = kmalloc(sizeof(struct kobil_private), GFP_KERNEL);
 155         if (!priv){
 156                 return -ENOMEM;
 157         }
 158
 159         priv->filled = 0;
 160         priv->cur_pos = 0;
 161         priv->device_type = le16_to_cpu(serial->dev->descriptor.idProduct);
 162         priv->line_state = 0;
 163
 164         switch (priv->device_type){
 165         case KOBIL_ADAPTER_B_PRODUCT_ID:
 166                 printk(KERN_DEBUG "KOBIL B1 PRO / KAAN PRO detected\n");
 167                 break;
 168         case KOBIL_ADAPTER_K_PRODUCT_ID:
 169                 printk(KERN_DEBUG "KOBIL KAAN Standard Plus / SecOVID Reader Plus detected\n");
 170                 break;
 171         case KOBIL_USBTWIN_PRODUCT_ID:
 172                 printk(KERN_DEBUG "KOBIL USBTWIN detected\n");
 173                 break;
 174         case KOBIL_KAAN_SIM_PRODUCT_ID:
 175                 printk(KERN_DEBUG "KOBIL KAAN SIM detected\n");
 176                 break;
 177         }
 178         usb_set_serial_port_data(serial->port[0], priv);
 179
 180         // search for the necessary endpoints
 181         pdev = serial->dev;
 182         actconfig = pdev->actconfig;
 183         interface = actconfig->interface[0];
 184         altsetting = interface->cur_altsetting;
 185         endpoint = altsetting->endpoint;
 186
 187         for (i = 0; i < altsetting->desc.bNumEndpoints; i++) {
 188                 endpoint = &altsetting->endpoint[i];
 189                 if (usb_endpoint_is_int_out(&endpoint->desc)) {
 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 (usb_endpoint_is_int_in(&endpoint->desc)) {
 194                         dbg("%s Found interrupt in  endpoint. Address: %d", __FUNCTION__, endpoint->desc.bEndpointAddress);
 195                         priv->read_int_endpoint_address = endpoint->desc.bEndpointAddress;
 196                 }
 197         }
 198         return 0;
 199 }
 200
 201
 202 static void kobil_shutdown (struct usb_serial *serial)
 203 {
 204         int i;
 205         dbg("%s - port %d", __FUNCTION__, serial->port[0]->number);
 206
 207         for (i=0; i < serial->num_ports; ++i) {
 208                 while (serial->port[i]->open_count > 0) {
 209                         kobil_close (serial->port[i], NULL);
 210                 }
 211                 kfree(usb_get_serial_port_data(serial->port[i]));
 212                 usb_set_serial_port_data(serial->port[i], NULL);
 213         }
 214 }
 215
 216
 217 static int kobil_open (struct usb_serial_port *port, struct file *filp)
 218 {
 219         int i, result = 0;
 220         struct kobil_private *priv;
 221         unsigned char *transfer_buffer;
 222         int transfer_buffer_length = 8;
 223         int write_urb_transfer_buffer_length = 8;
 224
 225         dbg("%s - port %d", __FUNCTION__, port->number);
 226         priv = usb_get_serial_port_data(port);
 227         priv->line_state = 0;
 228
 229         // someone sets the dev to 0 if the close method has been called
 230         port->interrupt_in_urb->dev = port->serial->dev;
 231
 232
 233         /* force low_latency on so that our tty_push actually forces
 234          * the data through, otherwise it is scheduled, and with high
 235          * data rates (like with OHCI) data can get lost.
 236          */
 237         port->tty->low_latency = 1;
 238
 239         // without this, every push_tty_char is echoed :-(
 240         port->tty->termios->c_lflag = 0;
 241         port->tty->termios->c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN | XCASE);
 242         port->tty->termios->c_iflag = IGNBRK | IGNPAR | IXOFF;
 243         port->tty->termios->c_oflag &= ~ONLCR; // do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D)
 244
 245         // set up internal termios structure
 246         priv->internal_termios.c_iflag = port->tty->termios->c_iflag;
 247         priv->internal_termios.c_oflag = port->tty->termios->c_oflag;
 248         priv->internal_termios.c_cflag = port->tty->termios->c_cflag;
 249         priv->internal_termios.c_lflag = port->tty->termios->c_lflag;
 250
 251         for (i=0; i<NCCS; i++) {
 252                 priv->internal_termios.c_cc[i] = port->tty->termios->c_cc[i];
 253         }
 254
 255         // allocate memory for transfer buffer
 256         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 257         if (! transfer_buffer) {
 258                 return -ENOMEM;
 259         }
 260
 261         // allocate write_urb
 262         if (!port->write_urb) {
 263                 dbg("%s - port %d  Allocating port->write_urb", __FUNCTION__, port->number);
 264                 port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
 265                 if (!port->write_urb) {
 266                         dbg("%s - port %d usb_alloc_urb failed", __FUNCTION__, port->number);
 267                         kfree(transfer_buffer);
 268                         return -ENOMEM;
 269                 }
 270         }
 271
 272         // allocate memory for write_urb transfer buffer
 273         port->write_urb->transfer_buffer = kmalloc(write_urb_transfer_buffer_length, GFP_KERNEL);
 274         if (! port->write_urb->transfer_buffer) {
 275                 kfree(transfer_buffer);
 276                 usb_free_urb(port->write_urb);
 277                 port->write_urb = NULL;
 278                 return -ENOMEM;
 279         }
 280
 281         // get hardware version
 282         result = usb_control_msg( port->serial->dev,
 283                                   usb_rcvctrlpipe(port->serial->dev, 0 ),
 284                                   SUSBCRequest_GetMisc,
 285                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 286                                   SUSBCR_MSC_GetHWVersion,
 287                                   0,
 288                                   transfer_buffer,
 289                                   transfer_buffer_length,
 290                                   KOBIL_TIMEOUT
 291                 );
 292         dbg("%s - port %d Send get_HW_version URB returns: %i", __FUNCTION__, port->number, result);
 293         dbg("Harware version: %i.%i.%i", transfer_buffer[0], transfer_buffer[1], transfer_buffer[2] );
 294
 295         // get firmware version
 296         result = usb_control_msg( port->serial->dev,
 297                                   usb_rcvctrlpipe(port->serial->dev, 0 ),
 298                                   SUSBCRequest_GetMisc,
 299                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 300                                   SUSBCR_MSC_GetFWVersion,
 301                                   0,
 302                                   transfer_buffer,
 303                                   transfer_buffer_length,
 304                                   KOBIL_TIMEOUT
 305                 );
 306         dbg("%s - port %d Send get_FW_version URB returns: %i", __FUNCTION__, port->number, result);
 307         dbg("Firmware version: %i.%i.%i", transfer_buffer[0], transfer_buffer[1], transfer_buffer[2] );
 308
 309         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
 310                 // Setting Baudrate, Parity and Stopbits
 311                 result = usb_control_msg( port->serial->dev,
 312                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 313                                           SUSBCRequest_SetBaudRateParityAndStopBits,
 314                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 315                                           SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity | SUSBCR_SPASB_1StopBit,
 316                                           0,
 317                                           transfer_buffer,
 318                                           0,
 319                                           KOBIL_TIMEOUT
 320                         );
 321                 dbg("%s - port %d Send set_baudrate URB returns: %i", __FUNCTION__, port->number, result);
 322
 323                 // reset all queues
 324                 result = usb_control_msg( port->serial->dev,
 325                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 326                                           SUSBCRequest_Misc,
 327                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 328                                           SUSBCR_MSC_ResetAllQueues,
 329                                           0,
 330                                           transfer_buffer,
 331                                           0,
 332                                           KOBIL_TIMEOUT
 333                         );
 334                 dbg("%s - port %d Send reset_all_queues URB returns: %i", __FUNCTION__, port->number, result);
 335         }
 336         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 337             priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 338                 // start reading (Adapter B 'cause PNP string)
 339                 result = usb_submit_urb( port->interrupt_in_urb, GFP_ATOMIC  );
 340                 dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
 341         }
 342
 343         kfree(transfer_buffer);
 344         return 0;
 345 }
 346
 347
 348 static void kobil_close (struct usb_serial_port *port, struct file *filp)
 349 {
 350         dbg("%s - port %d", __FUNCTION__, port->number);
 351
 352         if (port->write_urb) {
 353                 usb_kill_urb(port->write_urb);
 354                 usb_free_urb( port->write_urb );
 355                 port->write_urb = NULL;
 356         }
 357         usb_kill_urb(port->interrupt_in_urb);
 358 }
 359
 360
 361 static void kobil_read_int_callback( struct urb *purb)
 362 {
 363         int result;
 364         struct usb_serial_port *port = (struct usb_serial_port *) purb->context;
 365         struct tty_struct *tty;
 366         unsigned char *data = purb->transfer_buffer;
 367 //      char *dbg_data;
 368
 369         dbg("%s - port %d", __FUNCTION__, port->number);
 370
 371         if (purb->status) {
 372                 dbg("%s - port %d Read int status not zero: %d", __FUNCTION__, port->number, purb->status);
 373                 return;
 374         }
 375
 376         tty = port->tty;
 377         if (purb->actual_length) {
 378
 379                 // BEGIN DEBUG
 380                 /*
 381                   dbg_data = kzalloc((3 *  purb->actual_length + 10) * sizeof(char), GFP_KERNEL);
 382                   if (! dbg_data) {
 383                   return;
 384                   }
 385                   for (i = 0; i < purb->actual_length; i++) {
 386                   sprintf(dbg_data +3*i, "%02X ", data[i]);
 387                   }
 388                   dbg(" <-- %s", dbg_data );
 389                   kfree(dbg_data);
 390                 */
 391                 // END DEBUG
 392
 393                 tty_buffer_request_room(tty, purb->actual_length);
 394                 tty_insert_flip_string(tty, data, purb->actual_length);
 395                 tty_flip_buffer_push(tty);
 396         }
 397
 398         // someone sets the dev to 0 if the close method has been called
 399         port->interrupt_in_urb->dev = port->serial->dev;
 400
 401         result = usb_submit_urb( port->interrupt_in_urb, GFP_ATOMIC );
 402         dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
 403 }
 404
 405
 406 static void kobil_write_callback( struct urb *purb )
 407 {
 408 }
 409
 410
 411 static int kobil_write (struct usb_serial_port *port,
 412                         const unsigned char *buf, int count)
 413 {
 414         int length = 0;
 415         int result = 0;
 416         int todo = 0;
 417         struct kobil_private * priv;
 418
 419         if (count == 0) {
 420                 dbg("%s - port %d write request of 0 bytes", __FUNCTION__, port->number);
 421                 return 0;
 422         }
 423
 424         priv = usb_get_serial_port_data(port);
 425
 426         if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
 427                 dbg("%s - port %d Error: write request bigger than buffer size", __FUNCTION__, port->number);
 428                 return -ENOMEM;
 429         }
 430
 431         // Copy data to buffer
 432         memcpy (priv->buf + priv->filled, buf, count);
 433
 434         usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, priv->buf + priv->filled);
 435
 436         priv->filled = priv->filled + count;
 437
 438
 439         // only send complete block. TWIN, KAAN SIM and adapter K use the same protocol.
 440         if ( ((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) ||
 441              ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4))) ) {
 442
 443                 // stop reading (except TWIN and KAAN SIM)
 444                 if ( (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) )
 445                         usb_kill_urb(port->interrupt_in_urb);
 446
 447                 todo = priv->filled - priv->cur_pos;
 448
 449                 while(todo > 0) {
 450                         // max 8 byte in one urb (endpoint size)
 451                         length = (todo < 8) ? todo : 8;
 452                         // copy data to transfer buffer
 453                         memcpy(port->write_urb->transfer_buffer, priv->buf + priv->cur_pos, length );
 454                         usb_fill_int_urb( port->write_urb,
 455                                           port->serial->dev,
 456                                           usb_sndintpipe(port->serial->dev, priv->write_int_endpoint_address),
 457                                           port->write_urb->transfer_buffer,
 458                                           length,
 459                                           kobil_write_callback,
 460                                           port,
 461                                           8
 462                                 );
 463
 464                         priv->cur_pos = priv->cur_pos + length;
 465                         result = usb_submit_urb( port->write_urb, GFP_NOIO );
 466                         dbg("%s - port %d Send write URB returns: %i", __FUNCTION__, port->number, result);
 467                         todo = priv->filled - priv->cur_pos;
 468
 469                         if (todo > 0) {
 470                                 msleep(24);
 471                         }
 472
 473                 } // end while
 474
 475                 priv->filled = 0;
 476                 priv->cur_pos = 0;
 477
 478                 // someone sets the dev to 0 if the close method has been called
 479                 port->interrupt_in_urb->dev = port->serial->dev;
 480
 481                 // start reading (except TWIN and KAAN SIM)
 482                 if ( (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) ) {
 483                         // someone sets the dev to 0 if the close method has been called
 484                         port->interrupt_in_urb->dev = port->serial->dev;
 485
 486                         result = usb_submit_urb( port->interrupt_in_urb, GFP_NOIO );
 487                         dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
 488                 }
 489         }
 490         return count;
 491 }
 492
 493
 494 static int kobil_write_room (struct usb_serial_port *port)
 495 {
 496         //dbg("%s - port %d", __FUNCTION__, port->number);
 497         return 8;
 498 }
 499
 500
 501 static int kobil_tiocmget(struct usb_serial_port *port, struct file *file)
 502 {
 503         struct kobil_private * priv;
 504         int result;
 505         unsigned char *transfer_buffer;
 506         int transfer_buffer_length = 8;
 507
 508         priv = usb_get_serial_port_data(port);
 509         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
 510                 // This device doesn't support ioctl calls
 511                 return -EINVAL;
 512         }
 513
 514         // allocate memory for transfer buffer
 515         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 516         if (!transfer_buffer) {
 517                 return -ENOMEM;
 518         }
 519
 520         result = usb_control_msg( port->serial->dev,
 521                                   usb_rcvctrlpipe(port->serial->dev, 0 ),
 522                                   SUSBCRequest_GetStatusLineState,
 523                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 524                                   0,
 525                                   0,
 526                                   transfer_buffer,
 527                                   transfer_buffer_length,
 528                                   KOBIL_TIMEOUT);
 529
 530         dbg("%s - port %d Send get_status_line_state URB returns: %i. Statusline: %02x",
 531             __FUNCTION__, port->number, result, transfer_buffer[0]);
 532
 533         if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0) {
 534                 priv->line_state |= TIOCM_DSR;
 535         } else {
 536                 priv->line_state &= ~TIOCM_DSR;
 537         }
 538
 539         kfree(transfer_buffer);
 540         return priv->line_state;
 541 }
 542
 543 static int  kobil_tiocmset(struct usb_serial_port *port, struct file *file,
 544                            unsigned int set, unsigned int clear)
 545 {
 546         struct kobil_private * priv;
 547         int result;
 548         int dtr = 0;
 549         int rts = 0;
 550         unsigned char *transfer_buffer;
 551         int transfer_buffer_length = 8;
 552
 553         priv = usb_get_serial_port_data(port);
 554         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
 555                 // This device doesn't support ioctl calls
 556                 return -EINVAL;
 557         }
 558
 559         // allocate memory for transfer buffer
 560         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 561         if (! transfer_buffer) {
 562                 return -ENOMEM;
 563         }
 564
 565         if (set & TIOCM_RTS)
 566                 rts = 1;
 567         if (set & TIOCM_DTR)
 568                 dtr = 1;
 569         if (clear & TIOCM_RTS)
 570                 rts = 0;
 571         if (clear & TIOCM_DTR)
 572                 dtr = 0;
 573
 574         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
 575                 if (dtr != 0)
 576                         dbg("%s - port %d Setting DTR", __FUNCTION__, port->number);
 577                 else
 578                         dbg("%s - port %d Clearing DTR", __FUNCTION__, port->number);
 579                 result = usb_control_msg( port->serial->dev,
 580                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 581                                           SUSBCRequest_SetStatusLinesOrQueues,
 582                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 583                                           ((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
 584                                           0,
 585                                           transfer_buffer,
 586                                           0,
 587                                           KOBIL_TIMEOUT);
 588         } else {
 589                 if (rts != 0)
 590                         dbg("%s - port %d Setting RTS", __FUNCTION__, port->number);
 591                 else
 592                         dbg("%s - port %d Clearing RTS", __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                                           ((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
 598                                           0,
 599                                           transfer_buffer,
 600                                           0,
 601                                           KOBIL_TIMEOUT);
 602         }
 603         dbg("%s - port %d Send set_status_line URB returns: %i", __FUNCTION__, port->number, result);
 604         kfree(transfer_buffer);
 605         return (result < 0) ? result : 0;
 606 }
 607
 608
 609 static int  kobil_ioctl(struct usb_serial_port *port, struct file *file,
 610                         unsigned int cmd, unsigned long arg)
 611 {
 612         struct kobil_private * priv;
 613         int result;
 614         unsigned short urb_val = 0;
 615         unsigned char *transfer_buffer;
 616         int transfer_buffer_length = 8;
 617         char *settings;
 618         void __user *user_arg = (void __user *)arg;
 619
 620         priv = usb_get_serial_port_data(port);
 621         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
 622                 // This device doesn't support ioctl calls
 623                 return 0;
 624         }
 625
 626         switch (cmd) {
 627         case TCGETS:   // 0x5401
 628                 if (!access_ok(VERIFY_WRITE, user_arg, sizeof(struct ktermios))) {
 629                         dbg("%s - port %d Error in access_ok", __FUNCTION__, port->number);
 630                         return -EFAULT;
 631                 }
 632                 if (kernel_termios_to_user_termios((struct ktermios __user *)arg,
 633                                                    &priv->internal_termios))
 634                         return -EFAULT;
 635                 return 0;
 636
 637         case TCSETS:   // 0x5402
 638                 if (!(port->tty->termios)) {
 639                         dbg("%s - port %d Error: port->tty->termios is NULL", __FUNCTION__, port->number);
 640                         return -ENOTTY;
 641                 }
 642                 if (!access_ok(VERIFY_READ, user_arg, sizeof(struct ktermios))) {
 643                         dbg("%s - port %d Error in access_ok", __FUNCTION__, port->number);
 644                         return -EFAULT;
 645                 }
 646                 if (user_termios_to_kernel_termios(&priv->internal_termios,
 647                                                    (struct ktermios __user *)arg))
 648                         return -EFAULT;
 649
 650                 settings = kzalloc(50, GFP_KERNEL);
 651                 if (! settings) {
 652                         return -ENOBUFS;
 653                 }
 654
 655                 switch (priv->internal_termios.c_cflag & CBAUD) {
 656                 case B1200:
 657                         urb_val = SUSBCR_SBR_1200;
 658                         strcat(settings, "1200 ");
 659                         break;
 660                 case B9600:
 661                 default:
 662                         urb_val = SUSBCR_SBR_9600;
 663                         strcat(settings, "9600 ");
 664                         break;
 665                 }
 666
 667                 urb_val |= (priv->internal_termios.c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits : SUSBCR_SPASB_1StopBit;
 668                 strcat(settings, (priv->internal_termios.c_cflag & CSTOPB) ? "2 StopBits " : "1 StopBit ");
 669
 670                 if (priv->internal_termios.c_cflag & PARENB) {
 671                         if  (priv->internal_termios.c_cflag & PARODD) {
 672                                 urb_val |= SUSBCR_SPASB_OddParity;
 673                                 strcat(settings, "Odd Parity");
 674                         } else {
 675                                 urb_val |= SUSBCR_SPASB_EvenParity;
 676                                 strcat(settings, "Even Parity");
 677                         }
 678                 } else {
 679                         urb_val |= SUSBCR_SPASB_NoParity;
 680                         strcat(settings, "No Parity");
 681                 }
 682                 dbg("%s - port %d setting port to: %s", __FUNCTION__, port->number, settings );
 683
 684                 result = usb_control_msg( port->serial->dev,
 685                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 686                                           SUSBCRequest_SetBaudRateParityAndStopBits,
 687                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 688                                           urb_val,
 689                                           0,
 690                                           settings,
 691                                           0,
 692                                           KOBIL_TIMEOUT
 693                         );
 694
 695                 dbg("%s - port %d Send set_baudrate URB returns: %i", __FUNCTION__, port->number, result);
 696                 kfree(settings);
 697                 return 0;
 698
 699         case TCFLSH:   // 0x540B
 700                 transfer_buffer = kmalloc(transfer_buffer_length, GFP_KERNEL);
 701                 if (! transfer_buffer) {
 702                         return -ENOBUFS;
 703                 }
 704
 705                 result = usb_control_msg( port->serial->dev,
 706                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 707                                           SUSBCRequest_Misc,
 708                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 709                                           SUSBCR_MSC_ResetAllQueues,
 710                                           0,
 711                                           NULL,//transfer_buffer,
 712                                           0,
 713                                           KOBIL_TIMEOUT
 714                         );
 715
 716                 dbg("%s - port %d Send reset_all_queues (FLUSH) URB returns: %i", __FUNCTION__, port->number, result);
 717
 718                 kfree(transfer_buffer);
 719                 return ((result < 0) ? -EFAULT : 0);
 720
 721         }
 722         return -ENOIOCTLCMD;
 723 }
 724
 725
 726 static int __init kobil_init (void)
 727 {
 728         int retval;
 729         retval = usb_serial_register(&kobil_device);
 730         if (retval)
 731                 goto failed_usb_serial_register;
 732         retval = usb_register(&kobil_driver);
 733         if (retval)
 734                 goto failed_usb_register;
 735
 736         info(DRIVER_VERSION " " DRIVER_AUTHOR);
 737         info(DRIVER_DESC);
 738
 739         return 0;
 740 failed_usb_register:
 741         usb_serial_deregister(&kobil_device);
 742 failed_usb_serial_register:
 743         return retval;
 744 }
 745
 746
 747 static void __exit kobil_exit (void)
 748 {
 749         usb_deregister (&kobil_driver);
 750         usb_serial_deregister (&kobil_device);
 751 }
 752
 753 module_init(kobil_init);
 754 module_exit(kobil_exit);
 755
 756 MODULE_AUTHOR( DRIVER_AUTHOR );
 757 MODULE_DESCRIPTION( DRIVER_DESC );
 758 MODULE_LICENSE( "GPL" );
 759
 760 module_param(debug, bool, S_IRUGO | S_IWUSR);
 761 MODULE_PARM_DESC(debug, "Debug enabled or not");