drivers/usb/serial/kobil_sct.c

   1 /*
   2  *  KOBIL USB Smart Card Terminal Driver
   3  *
   4  *  Copyright (C) 2002  KOBIL Systems GmbH
   5  *  Author: Thomas Wahrenbruch
   6  *
   7  *  Contact: linuxusb@kobil.de
   8  *
   9  *  This program is largely derived from work by the linux-usb group
  10  *  and associated source files.  Please see the usb/serial files for
  11  *  individual credits and copyrights.
  12  *
  13  *  This program is free software; you can redistribute it and/or modify
  14  *  it under the terms of the GNU General Public License as published by
  15  *  the Free Software Foundation; either version 2 of the License, or
  16  *  (at your option) any later version.
  17  *
  18  *  Thanks to Greg Kroah-Hartman (greg@kroah.com) for his help and
  19  *  patience.
  20  *
  21  * Supported readers: USB TWIN, KAAN Standard Plus and SecOVID Reader Plus
  22  * (Adapter K), B1 Professional and KAAN Professional (Adapter B)
  23  *
  24  * (21/05/2004) tw
  25  *      Fix bug with P'n'P readers
  26  *
  27  * (28/05/2003) tw
  28  *      Add support for KAAN SIM
  29  *
  30  * (12/09/2002) tw
  31  *      Adapted to 2.5.
  32  *
  33  * (11/08/2002) tw
  34  *      Initial version.
  35  */
  36
  37
  38 #include <linux/config.h>
  39 #include <linux/kernel.h>
  40 #include <linux/errno.h>
  41 #include <linux/init.h>
  42 #include <linux/slab.h>
  43 #include <linux/tty.h>
  44 #include <linux/tty_driver.h>
  45 #include <linux/tty_flip.h>
  46 #include <linux/module.h>
  47 #include <linux/spinlock.h>
  48 #include <asm/uaccess.h>
  49 #include <linux/usb.h>
  50 #include <linux/ioctl.h>
  51 #include "usb-serial.h"
  52 #include "kobil_sct.h"
  53
  54 static int debug;
  55
  56 /* Version Information */
  57 #define DRIVER_VERSION "21/05/2004"
  58 #define DRIVER_AUTHOR "KOBIL Systems GmbH - http://www.kobil.com"
  59 #define DRIVER_DESC "KOBIL USB Smart Card Terminal Driver (experimental)"
  60
  61 #define KOBIL_VENDOR_ID                 0x0D46
  62 #define KOBIL_ADAPTER_B_PRODUCT_ID      0x2011
  63 #define KOBIL_ADAPTER_K_PRODUCT_ID      0x2012
  64 #define KOBIL_USBTWIN_PRODUCT_ID        0x0078
  65 #define KOBIL_KAAN_SIM_PRODUCT_ID       0x0081
  66
  67 #define KOBIL_TIMEOUT           500
  68 #define KOBIL_BUF_LENGTH        300
  69
  70
  71 /* Function prototypes */
  72 static int  kobil_startup (struct usb_serial *serial);
  73 static void kobil_shutdown (struct usb_serial *serial);
  74 static int  kobil_open (struct usb_serial_port *port, struct file *filp);
  75 static void kobil_close (struct usb_serial_port *port, struct file *filp);
  76 static int  kobil_write (struct usb_serial_port *port,
  77                          const unsigned char *buf, int count);
  78 static int  kobil_write_room(struct usb_serial_port *port);
  79 static int  kobil_ioctl(struct usb_serial_port *port, struct file *file,
  80                         unsigned int cmd, unsigned long arg);
  81 static int  kobil_tiocmget(struct usb_serial_port *port, struct file *file);
  82 static int  kobil_tiocmset(struct usb_serial_port *port, struct file *file,
  83                            unsigned int set, unsigned int clear);
  84 static void kobil_read_int_callback( struct urb *urb, struct pt_regs *regs );
  85 static void kobil_write_callback( struct urb *purb, struct pt_regs *regs );
  86
  87
  88 static struct usb_device_id id_table [] = {
  89         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_B_PRODUCT_ID) },
  90         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_K_PRODUCT_ID) },
  91         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_USBTWIN_PRODUCT_ID) },
  92         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_KAAN_SIM_PRODUCT_ID) },
  93         { }                     /* Terminating entry */
  94 };
  95
  96
  97 MODULE_DEVICE_TABLE (usb, id_table);
  98
  99 static struct usb_driver kobil_driver = {
 100         .owner =        THIS_MODULE,
 101         .name =         "kobil",
 102         .probe =        usb_serial_probe,
 103         .disconnect =   usb_serial_disconnect,
 104         .id_table =     id_table,
 105 };
 106
 107
 108 static struct usb_serial_device_type kobil_device = {
 109         .owner =                THIS_MODULE,
 110         .name =                 "KOBIL USB smart card terminal",
 111         .id_table =             id_table,
 112         .num_interrupt_in =     NUM_DONT_CARE,
 113         .num_bulk_in =          0,
 114         .num_bulk_out =         0,
 115         .num_ports =            1,
 116         .attach =               kobil_startup,
 117         .shutdown =             kobil_shutdown,
 118         .ioctl =                kobil_ioctl,
 119         .tiocmget =             kobil_tiocmget,
 120         .tiocmset =             kobil_tiocmset,
 121         .open =                 kobil_open,
 122         .close =                kobil_close,
 123         .write =                kobil_write,
 124         .write_room =           kobil_write_room,
 125         .read_int_callback =    kobil_read_int_callback,
 126 };
 127
 128
 129 struct kobil_private {
 130         int write_int_endpoint_address;
 131         int read_int_endpoint_address;
 132         unsigned char buf[KOBIL_BUF_LENGTH]; // buffer for the APDU to send
 133         int filled;  // index of the last char in buf
 134         int cur_pos; // index of the next char to send in buf
 135         __u16 device_type;
 136         int line_state;
 137         struct termios internal_termios;
 138 };
 139
 140
 141 static int kobil_startup (struct usb_serial *serial)
 142 {
 143         int i;
 144         struct kobil_private *priv;
 145         struct usb_device *pdev;
 146         struct usb_host_config *actconfig;
 147         struct usb_interface *interface;
 148         struct usb_host_interface *altsetting;
 149         struct usb_host_endpoint *endpoint;
 150
 151         priv = kmalloc(sizeof(struct kobil_private), GFP_KERNEL);
 152         if (!priv){
 153                 return -ENOMEM;
 154         }
 155
 156         priv->filled = 0;
 157         priv->cur_pos = 0;
 158         priv->device_type = le16_to_cpu(serial->dev->descriptor.idProduct);
 159         priv->line_state = 0;
 160
 161         switch (priv->device_type){
 162         case KOBIL_ADAPTER_B_PRODUCT_ID:
 163                 printk(KERN_DEBUG "KOBIL B1 PRO / KAAN PRO detected\n");
 164                 break;
 165         case KOBIL_ADAPTER_K_PRODUCT_ID:
 166                 printk(KERN_DEBUG "KOBIL KAAN Standard Plus / SecOVID Reader Plus detected\n");
 167                 break;
 168         case KOBIL_USBTWIN_PRODUCT_ID:
 169                 printk(KERN_DEBUG "KOBIL USBTWIN detected\n");
 170                 break;
 171         case KOBIL_KAAN_SIM_PRODUCT_ID:
 172                 printk(KERN_DEBUG "KOBIL KAAN SIM detected\n");
 173                 break;
 174         }
 175         usb_set_serial_port_data(serial->port[0], priv);
 176
 177         // search for the necessary endpoints
 178         pdev = serial->dev;
 179         actconfig = pdev->actconfig;
 180         interface = actconfig->interface[0];
 181         altsetting = interface->cur_altsetting;
 182         endpoint = altsetting->endpoint;
 183
 184         for (i = 0; i < altsetting->desc.bNumEndpoints; i++) {
 185                 endpoint = &altsetting->endpoint[i];
 186                 if (((endpoint->desc.bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) &&
 187                     ((endpoint->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)) {
 188                         dbg("%s Found interrupt out endpoint. Address: %d", __FUNCTION__, endpoint->desc.bEndpointAddress);
 189                         priv->write_int_endpoint_address = endpoint->desc.bEndpointAddress;
 190                 }
 191                 if (((endpoint->desc.bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) &&
 192                     ((endpoint->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)) {
 193                         dbg("%s Found interrupt in  endpoint. Address: %d", __FUNCTION__, endpoint->desc.bEndpointAddress);
 194                         priv->read_int_endpoint_address = endpoint->desc.bEndpointAddress;
 195                 }
 196         }
 197         return 0;
 198 }
 199
 200
 201 static void kobil_shutdown (struct usb_serial *serial)
 202 {
 203         int i;
 204         dbg("%s - port %d", __FUNCTION__, serial->port[0]->number);
 205
 206         for (i=0; i < serial->num_ports; ++i) {
 207                 while (serial->port[i]->open_count > 0) {
 208                         kobil_close (serial->port[i], NULL);
 209                 }
 210                 kfree(usb_get_serial_port_data(serial->port[i]));
 211                 usb_set_serial_port_data(serial->port[i], NULL);
 212         }
 213 }
 214
 215
 216 static int kobil_open (struct usb_serial_port *port, struct file *filp)
 217 {
 218         int i, result = 0;
 219         struct kobil_private *priv;
 220         unsigned char *transfer_buffer;
 221         int transfer_buffer_length = 8;
 222         int write_urb_transfer_buffer_length = 8;
 223
 224         dbg("%s - port %d", __FUNCTION__, port->number);
 225         priv = usb_get_serial_port_data(port);
 226         priv->line_state = 0;
 227
 228         // someone sets the dev to 0 if the close method has been called
 229         port->interrupt_in_urb->dev = port->serial->dev;
 230
 231
 232         /* force low_latency on so that our tty_push actually forces
 233          * the data through, otherwise it is scheduled, and with high
 234          * data rates (like with OHCI) data can get lost.
 235          */
 236         port->tty->low_latency = 1;
 237
 238         // without this, every push_tty_char is echoed :-(
 239         port->tty->termios->c_lflag = 0;
 240         port->tty->termios->c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN | XCASE);
 241         port->tty->termios->c_iflag = IGNBRK | IGNPAR | IXOFF;
 242         port->tty->termios->c_oflag &= ~ONLCR; // do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D)
 243
 244         // set up internal termios structure
 245         priv->internal_termios.c_iflag = port->tty->termios->c_iflag;
 246         priv->internal_termios.c_oflag = port->tty->termios->c_oflag;
 247         priv->internal_termios.c_cflag = port->tty->termios->c_cflag;
 248         priv->internal_termios.c_lflag = port->tty->termios->c_lflag;
 249
 250         for (i=0; i<NCCS; i++) {
 251                 priv->internal_termios.c_cc[i] = port->tty->termios->c_cc[i];
 252         }
 253
 254         // allocate memory for transfer buffer
 255         transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);
 256         if (! transfer_buffer) {
 257                 return -ENOMEM;
 258         } else {
 259                 memset(transfer_buffer, 0, transfer_buffer_length);
 260         }
 261
 262         // allocate write_urb
 263         if (!port->write_urb) {
 264                 dbg("%s - port %d  Allocating port->write_urb", __FUNCTION__, port->number);
 265                 port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
 266                 if (!port->write_urb) {
 267                         dbg("%s - port %d usb_alloc_urb failed", __FUNCTION__, port->number);
 268                         kfree(transfer_buffer);
 269                         return -ENOMEM;
 270                 }
 271         }
 272
 273         // allocate memory for write_urb transfer buffer
 274         port->write_urb->transfer_buffer = (unsigned char *) kmalloc(write_urb_transfer_buffer_length, GFP_KERNEL);
 275         if (! port->write_urb->transfer_buffer) {
 276                 kfree(transfer_buffer);
 277                 usb_free_urb(port->write_urb);
 278                 port->write_urb = NULL;
 279                 return -ENOMEM;
 280         }
 281
 282         // get hardware version
 283         result = usb_control_msg( port->serial->dev,
 284                                   usb_rcvctrlpipe(port->serial->dev, 0 ),
 285                                   SUSBCRequest_GetMisc,
 286                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 287                                   SUSBCR_MSC_GetHWVersion,
 288                                   0,
 289                                   transfer_buffer,
 290                                   transfer_buffer_length,
 291                                   KOBIL_TIMEOUT
 292                 );
 293         dbg("%s - port %d Send get_HW_version URB returns: %i", __FUNCTION__, port->number, result);
 294         dbg("Harware version: %i.%i.%i", transfer_buffer[0], transfer_buffer[1], transfer_buffer[2] );
 295
 296         // get firmware version
 297         result = usb_control_msg( port->serial->dev,
 298                                   usb_rcvctrlpipe(port->serial->dev, 0 ),
 299                                   SUSBCRequest_GetMisc,
 300                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 301                                   SUSBCR_MSC_GetFWVersion,
 302                                   0,
 303                                   transfer_buffer,
 304                                   transfer_buffer_length,
 305                                   KOBIL_TIMEOUT
 306                 );
 307         dbg("%s - port %d Send get_FW_version URB returns: %i", __FUNCTION__, port->number, result);
 308         dbg("Firmware version: %i.%i.%i", transfer_buffer[0], transfer_buffer[1], transfer_buffer[2] );
 309
 310         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
 311                 // Setting Baudrate, Parity and Stopbits
 312                 result = usb_control_msg( port->serial->dev,
 313                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 314                                           SUSBCRequest_SetBaudRateParityAndStopBits,
 315                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 316                                           SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity | SUSBCR_SPASB_1StopBit,
 317                                           0,
 318                                           transfer_buffer,
 319                                           0,
 320                                           KOBIL_TIMEOUT
 321                         );
 322                 dbg("%s - port %d Send set_baudrate URB returns: %i", __FUNCTION__, port->number, result);
 323
 324                 // reset all queues
 325                 result = usb_control_msg( port->serial->dev,
 326                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 327                                           SUSBCRequest_Misc,
 328                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 329                                           SUSBCR_MSC_ResetAllQueues,
 330                                           0,
 331                                           transfer_buffer,
 332                                           0,
 333                                           KOBIL_TIMEOUT
 334                         );
 335                 dbg("%s - port %d Send reset_all_queues URB returns: %i", __FUNCTION__, port->number, result);
 336         }
 337         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 338             priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 339                 // start reading (Adapter B 'cause PNP string)
 340                 result = usb_submit_urb( port->interrupt_in_urb, GFP_ATOMIC  );
 341                 dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
 342         }
 343
 344         kfree(transfer_buffer);
 345         return 0;
 346 }
 347
 348
 349 static void kobil_close (struct usb_serial_port *port, struct file *filp)
 350 {
 351         dbg("%s - port %d", __FUNCTION__, port->number);
 352
 353         if (port->write_urb) {
 354                 usb_kill_urb(port->write_urb);
 355                 usb_free_urb( port->write_urb );
 356                 port->write_urb = NULL;
 357         }
 358         if (port->interrupt_in_urb)
 359                 usb_kill_urb(port->interrupt_in_urb);
 360 }
 361
 362
 363 static void kobil_read_int_callback( struct urb *purb, struct pt_regs *regs)
 364 {
 365         int i;
 366         int result;
 367         struct usb_serial_port *port = (struct usb_serial_port *) purb->context;
 368         struct tty_struct *tty;
 369         unsigned char *data = purb->transfer_buffer;
 370 //      char *dbg_data;
 371
 372         dbg("%s - port %d", __FUNCTION__, port->number);
 373
 374         if (purb->status) {
 375                 dbg("%s - port %d Read int status not zero: %d", __FUNCTION__, port->number, purb->status);
 376                 return;
 377         }
 378
 379         tty = port->tty;
 380         if (purb->actual_length) {
 381
 382                 // BEGIN DEBUG
 383                 /*
 384                   dbg_data = (unsigned char *) kmalloc((3 *  purb->actual_length + 10) * sizeof(char), GFP_KERNEL);
 385                   if (! dbg_data) {
 386                   return;
 387                   }
 388                   memset(dbg_data, 0, (3 *  purb->actual_length + 10));
 389                   for (i = 0; i < purb->actual_length; i++) {
 390                   sprintf(dbg_data +3*i, "%02X ", data[i]);
 391                   }
 392                   dbg(" <-- %s", dbg_data );
 393                   kfree(dbg_data);
 394                 */
 395                 // END DEBUG
 396
 397                 for (i = 0; i < purb->actual_length; ++i) {
 398                         // if we insert more than TTY_FLIPBUF_SIZE characters, we drop them.
 399                         if(tty->flip.count >= TTY_FLIPBUF_SIZE) {
 400                                 tty_flip_buffer_push(tty);
 401                         }
 402                         // this doesn't actually push the data through unless tty->low_latency is set
 403                         tty_insert_flip_char(tty, data[i], 0);
 404                 }
 405                 tty_flip_buffer_push(tty);
 406         }
 407
 408         // someone sets the dev to 0 if the close method has been called
 409         port->interrupt_in_urb->dev = port->serial->dev;
 410
 411         result = usb_submit_urb( port->interrupt_in_urb, GFP_ATOMIC );
 412         dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
 413 }
 414
 415
 416 static void kobil_write_callback( struct urb *purb, struct pt_regs *regs )
 417 {
 418 }
 419
 420
 421 static int kobil_write (struct usb_serial_port *port,
 422                         const unsigned char *buf, int count)
 423 {
 424         int length = 0;
 425         int result = 0;
 426         int todo = 0;
 427         struct kobil_private * priv;
 428
 429         if (count == 0) {
 430                 dbg("%s - port %d write request of 0 bytes", __FUNCTION__, port->number);
 431                 return 0;
 432         }
 433
 434         priv = usb_get_serial_port_data(port);
 435
 436         if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
 437                 dbg("%s - port %d Error: write request bigger than buffer size", __FUNCTION__, port->number);
 438                 return -ENOMEM;
 439         }
 440
 441         // Copy data to buffer
 442         memcpy (priv->buf + priv->filled, buf, count);
 443
 444         usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, priv->buf + priv->filled);
 445
 446         priv->filled = priv->filled + count;
 447
 448
 449         // only send complete block. TWIN, KAAN SIM and adapter K use the same protocol.
 450         if ( ((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) ||
 451              ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4))) ) {
 452
 453                 // stop reading (except TWIN and KAAN SIM)
 454                 if ( (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) )
 455                         usb_kill_urb(port->interrupt_in_urb);
 456
 457                 todo = priv->filled - priv->cur_pos;
 458
 459                 while(todo > 0) {
 460                         // max 8 byte in one urb (endpoint size)
 461                         length = (todo < 8) ? todo : 8;
 462                         // copy data to transfer buffer
 463                         memcpy(port->write_urb->transfer_buffer, priv->buf + priv->cur_pos, length );
 464                         usb_fill_int_urb( port->write_urb,
 465                                           port->serial->dev,
 466                                           usb_sndintpipe(port->serial->dev, priv->write_int_endpoint_address),
 467                                           port->write_urb->transfer_buffer,
 468                                           length,
 469                                           kobil_write_callback,
 470                                           port,
 471                                           8
 472                                 );
 473
 474                         priv->cur_pos = priv->cur_pos + length;
 475                         result = usb_submit_urb( port->write_urb, GFP_NOIO );
 476                         dbg("%s - port %d Send write URB returns: %i", __FUNCTION__, port->number, result);
 477                         todo = priv->filled - priv->cur_pos;
 478
 479                         if (todo > 0) {
 480                                 msleep(24);
 481                         }
 482
 483                 } // end while
 484
 485                 priv->filled = 0;
 486                 priv->cur_pos = 0;
 487
 488                 // someone sets the dev to 0 if the close method has been called
 489                 port->interrupt_in_urb->dev = port->serial->dev;
 490
 491                 // start reading (except TWIN and KAAN SIM)
 492                 if ( (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) ) {
 493                         // someone sets the dev to 0 if the close method has been called
 494                         port->interrupt_in_urb->dev = port->serial->dev;
 495
 496                         result = usb_submit_urb( port->interrupt_in_urb, GFP_NOIO );
 497                         dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
 498                 }
 499         }
 500         return count;
 501 }
 502
 503
 504 static int kobil_write_room (struct usb_serial_port *port)
 505 {
 506         //dbg("%s - port %d", __FUNCTION__, port->number);
 507         return 8;
 508 }
 509
 510
 511 static int kobil_tiocmget(struct usb_serial_port *port, struct file *file)
 512 {
 513         struct kobil_private * priv;
 514         int result;
 515         unsigned char *transfer_buffer;
 516         int transfer_buffer_length = 8;
 517
 518         priv = usb_get_serial_port_data(port);
 519         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
 520                 // This device doesn't support ioctl calls
 521                 return -EINVAL;
 522         }
 523
 524         // allocate memory for transfer buffer
 525         transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);
 526         if (!transfer_buffer) {
 527                 return -ENOMEM;
 528         }
 529         memset(transfer_buffer, 0, transfer_buffer_length);
 530
 531         result = usb_control_msg( port->serial->dev,
 532                                   usb_rcvctrlpipe(port->serial->dev, 0 ),
 533                                   SUSBCRequest_GetStatusLineState,
 534                                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 535                                   0,
 536                                   0,
 537                                   transfer_buffer,
 538                                   transfer_buffer_length,
 539                                   KOBIL_TIMEOUT);
 540
 541         dbg("%s - port %d Send get_status_line_state URB returns: %i. Statusline: %02x",
 542             __FUNCTION__, port->number, result, transfer_buffer[0]);
 543
 544         if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0) {
 545                 priv->line_state |= TIOCM_DSR;
 546         } else {
 547                 priv->line_state &= ~TIOCM_DSR;
 548         }
 549
 550         kfree(transfer_buffer);
 551         return priv->line_state;
 552 }
 553
 554 static int  kobil_tiocmset(struct usb_serial_port *port, struct file *file,
 555                            unsigned int set, unsigned int clear)
 556 {
 557         struct kobil_private * priv;
 558         int result;
 559         int dtr = 0;
 560         int rts = 0;
 561         unsigned char *transfer_buffer;
 562         int transfer_buffer_length = 8;
 563
 564         priv = usb_get_serial_port_data(port);
 565         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
 566                 // This device doesn't support ioctl calls
 567                 return -EINVAL;
 568         }
 569
 570         // allocate memory for transfer buffer
 571         transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);
 572         if (! transfer_buffer) {
 573                 return -ENOMEM;
 574         }
 575         memset(transfer_buffer, 0, transfer_buffer_length);
 576
 577         if (set & TIOCM_RTS)
 578                 rts = 1;
 579         if (set & TIOCM_DTR)
 580                 dtr = 1;
 581         if (clear & TIOCM_RTS)
 582                 rts = 0;
 583         if (clear & TIOCM_DTR)
 584                 dtr = 0;
 585
 586         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
 587                 if (dtr != 0)
 588                         dbg("%s - port %d Setting DTR", __FUNCTION__, port->number);
 589                 else
 590                         dbg("%s - port %d Clearing DTR", __FUNCTION__, port->number);
 591                 result = usb_control_msg( port->serial->dev,
 592                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 593                                           SUSBCRequest_SetStatusLinesOrQueues,
 594                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 595                                           ((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
 596                                           0,
 597                                           transfer_buffer,
 598                                           0,
 599                                           KOBIL_TIMEOUT);
 600         } else {
 601                 if (rts != 0)
 602                         dbg("%s - port %d Setting RTS", __FUNCTION__, port->number);
 603                 else
 604                         dbg("%s - port %d Clearing RTS", __FUNCTION__, port->number);
 605                 result = usb_control_msg( port->serial->dev,
 606                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 607                                           SUSBCRequest_SetStatusLinesOrQueues,
 608                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 609                                           ((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
 610                                           0,
 611                                           transfer_buffer,
 612                                           0,
 613                                           KOBIL_TIMEOUT);
 614         }
 615         dbg("%s - port %d Send set_status_line URB returns: %i", __FUNCTION__, port->number, result);
 616         kfree(transfer_buffer);
 617         return (result < 0) ? result : 0;
 618 }
 619
 620
 621 static int  kobil_ioctl(struct usb_serial_port *port, struct file *file,
 622                         unsigned int cmd, unsigned long arg)
 623 {
 624         struct kobil_private * priv;
 625         int result;
 626         unsigned short urb_val = 0;
 627         unsigned char *transfer_buffer;
 628         int transfer_buffer_length = 8;
 629         char *settings;
 630         void __user *user_arg = (void __user *)arg;
 631
 632         priv = usb_get_serial_port_data(port);
 633         if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
 634                 // This device doesn't support ioctl calls
 635                 return 0;
 636         }
 637
 638         switch (cmd) {
 639         case TCGETS:   // 0x5401
 640                 if (!access_ok(VERIFY_WRITE, user_arg, sizeof(struct termios))) {
 641                         dbg("%s - port %d Error in access_ok", __FUNCTION__, port->number);
 642                         return -EFAULT;
 643                 }
 644                 if (kernel_termios_to_user_termios((struct termios __user *)arg,
 645                                                    &priv->internal_termios))
 646                         return -EFAULT;
 647                 return 0;
 648
 649         case TCSETS:   // 0x5402
 650                 if (!(port->tty->termios)) {
 651                         dbg("%s - port %d Error: port->tty->termios is NULL", __FUNCTION__, port->number);
 652                         return -ENOTTY;
 653                 }
 654                 if (!access_ok(VERIFY_READ, user_arg, sizeof(struct termios))) {
 655                         dbg("%s - port %d Error in access_ok", __FUNCTION__, port->number);
 656                         return -EFAULT;
 657                 }
 658                 if (user_termios_to_kernel_termios(&priv->internal_termios,
 659                                                    (struct termios __user *)arg))
 660                         return -EFAULT;
 661
 662                 settings = (unsigned char *) kmalloc(50, GFP_KERNEL);
 663                 if (! settings) {
 664                         return -ENOBUFS;
 665                 }
 666                 memset(settings, 0, 50);
 667
 668                 switch (priv->internal_termios.c_cflag & CBAUD) {
 669                 case B1200:
 670                         urb_val = SUSBCR_SBR_1200;
 671                         strcat(settings, "1200 ");
 672                         break;
 673                 case B9600:
 674                 default:
 675                         urb_val = SUSBCR_SBR_9600;
 676                         strcat(settings, "9600 ");
 677                         break;
 678                 }
 679
 680                 urb_val |= (priv->internal_termios.c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits : SUSBCR_SPASB_1StopBit;
 681                 strcat(settings, (priv->internal_termios.c_cflag & CSTOPB) ? "2 StopBits " : "1 StopBit ");
 682
 683                 if (priv->internal_termios.c_cflag & PARENB) {
 684                         if  (priv->internal_termios.c_cflag & PARODD) {
 685                                 urb_val |= SUSBCR_SPASB_OddParity;
 686                                 strcat(settings, "Odd Parity");
 687                         } else {
 688                                 urb_val |= SUSBCR_SPASB_EvenParity;
 689                                 strcat(settings, "Even Parity");
 690                         }
 691                 } else {
 692                         urb_val |= SUSBCR_SPASB_NoParity;
 693                         strcat(settings, "No Parity");
 694                 }
 695                 dbg("%s - port %d setting port to: %s", __FUNCTION__, port->number, settings );
 696
 697                 result = usb_control_msg( port->serial->dev,
 698                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 699                                           SUSBCRequest_SetBaudRateParityAndStopBits,
 700                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 701                                           urb_val,
 702                                           0,
 703                                           settings,
 704                                           0,
 705                                           KOBIL_TIMEOUT
 706                         );
 707
 708                 dbg("%s - port %d Send set_baudrate URB returns: %i", __FUNCTION__, port->number, result);
 709                 kfree(settings);
 710                 return 0;
 711
 712         case TCFLSH:   // 0x540B
 713                 transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);
 714                 if (! transfer_buffer) {
 715                         return -ENOBUFS;
 716                 }
 717
 718                 result = usb_control_msg( port->serial->dev,
 719                                           usb_rcvctrlpipe(port->serial->dev, 0 ),
 720                                           SUSBCRequest_Misc,
 721                                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 722                                           SUSBCR_MSC_ResetAllQueues,
 723                                           0,
 724                                           NULL,//transfer_buffer,
 725                                           0,
 726                                           KOBIL_TIMEOUT
 727                         );
 728
 729                 dbg("%s - port %d Send reset_all_queues (FLUSH) URB returns: %i", __FUNCTION__, port->number, result);
 730
 731                 kfree(transfer_buffer);
 732                 return ((result < 0) ? -EFAULT : 0);
 733
 734         }
 735         return -ENOIOCTLCMD;
 736 }
 737
 738
 739 static int __init kobil_init (void)
 740 {
 741         int retval;
 742         retval = usb_serial_register(&kobil_device);
 743         if (retval)
 744                 goto failed_usb_serial_register;
 745         retval = usb_register(&kobil_driver);
 746         if (retval)
 747                 goto failed_usb_register;
 748
 749         info(DRIVER_VERSION " " DRIVER_AUTHOR);
 750         info(DRIVER_DESC);
 751
 752         return 0;
 753 failed_usb_register:
 754         usb_serial_deregister(&kobil_device);
 755 failed_usb_serial_register:
 756         return retval;
 757 }
 758
 759
 760 static void __exit kobil_exit (void)
 761 {
 762         usb_deregister (&kobil_driver);
 763         usb_serial_deregister (&kobil_device);
 764 }
 765
 766 module_init(kobil_init);
 767 module_exit(kobil_exit);
 768
 769 MODULE_AUTHOR( DRIVER_AUTHOR );
 770 MODULE_DESCRIPTION( DRIVER_DESC );
 771 MODULE_LICENSE( "GPL" );
 772
 773 module_param(debug, bool, S_IRUGO | S_IWUSR);
 774 MODULE_PARM_DESC(debug, "Debug enabled or not");