Pileus Git - ~andy/linux/blob - 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
  25
  26 #include <linux/kernel.h>
  27 #include <linux/errno.h>
  28 #include <linux/init.h>
  29 #include <linux/slab.h>
  30 #include <linux/tty.h>
  31 #include <linux/tty_driver.h>
  32 #include <linux/tty_flip.h>
  33 #include <linux/module.h>
  34 #include <linux/spinlock.h>
  35 #include <linux/uaccess.h>
  36 #include <linux/usb.h>
  37 #include <linux/usb/serial.h>
  38 #include <linux/ioctl.h>
  39 #include "kobil_sct.h"
  40
  41 static bool debug;
  42
  43 /* Version Information */
  44 #define DRIVER_VERSION "21/05/2004"
  45 #define DRIVER_AUTHOR "KOBIL Systems GmbH - http://www.kobil.com"
  46 #define DRIVER_DESC "KOBIL USB Smart Card Terminal Driver (experimental)"
  47
  48 #define KOBIL_VENDOR_ID                 0x0D46
  49 #define KOBIL_ADAPTER_B_PRODUCT_ID      0x2011
  50 #define KOBIL_ADAPTER_K_PRODUCT_ID      0x2012
  51 #define KOBIL_USBTWIN_PRODUCT_ID        0x0078
  52 #define KOBIL_KAAN_SIM_PRODUCT_ID       0x0081
  53
  54 #define KOBIL_TIMEOUT           500
  55 #define KOBIL_BUF_LENGTH        300
  56
  57
  58 /* Function prototypes */
  59 static int  kobil_startup(struct usb_serial *serial);
  60 static void kobil_release(struct usb_serial *serial);
  61 static int  kobil_open(struct tty_struct *tty, struct usb_serial_port *port);
  62 static void kobil_close(struct usb_serial_port *port);
  63 static int  kobil_write(struct tty_struct *tty, struct usb_serial_port *port,
  64                          const unsigned char *buf, int count);
  65 static int  kobil_write_room(struct tty_struct *tty);
  66 static int  kobil_ioctl(struct tty_struct *tty,
  67                         unsigned int cmd, unsigned long arg);
  68 static int  kobil_tiocmget(struct tty_struct *tty);
  69 static int  kobil_tiocmset(struct tty_struct *tty,
  70                            unsigned int set, unsigned int clear);
  71 static void kobil_read_int_callback(struct urb *urb);
  72 static void kobil_write_callback(struct urb *purb);
  73 static void kobil_set_termios(struct tty_struct *tty,
  74                         struct usb_serial_port *port, struct ktermios *old);
  75 static void kobil_init_termios(struct tty_struct *tty);
  76
  77 static const struct usb_device_id id_table[] = {
  78         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_B_PRODUCT_ID) },
  79         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_K_PRODUCT_ID) },
  80         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_USBTWIN_PRODUCT_ID) },
  81         { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_KAAN_SIM_PRODUCT_ID) },
  82         { }                     /* Terminating entry */
  83 };
  84
  85
  86 MODULE_DEVICE_TABLE(usb, id_table);
  87
  88 static struct usb_driver kobil_driver = {
  89         .name =         "kobil",
  90         .probe =        usb_serial_probe,
  91         .disconnect =   usb_serial_disconnect,
  92         .id_table =     id_table,
  93 };
  94
  95
  96 static struct usb_serial_driver kobil_device = {
  97         .driver = {
  98                 .owner =        THIS_MODULE,
  99                 .name =         "kobil",
 100         },
 101         .description =          "KOBIL USB smart card terminal",
 102         .id_table =             id_table,
 103         .num_ports =            1,
 104         .attach =               kobil_startup,
 105         .release =              kobil_release,
 106         .ioctl =                kobil_ioctl,
 107         .set_termios =          kobil_set_termios,
 108         .init_termios =         kobil_init_termios,
 109         .tiocmget =             kobil_tiocmget,
 110         .tiocmset =             kobil_tiocmset,
 111         .open =                 kobil_open,
 112         .close =                kobil_close,
 113         .write =                kobil_write,
 114         .write_room =           kobil_write_room,
 115         .read_int_callback =    kobil_read_int_callback,
 116 };
 117
 118 static struct usb_serial_driver * const serial_drivers[] = {
 119         &kobil_device, NULL
 120 };
 121
 122 struct kobil_private {
 123         int write_int_endpoint_address;
 124         int read_int_endpoint_address;
 125         unsigned char buf[KOBIL_BUF_LENGTH]; /* buffer for the APDU to send */
 126         int filled;  /* index of the last char in buf */
 127         int cur_pos; /* index of the next char to send in buf */
 128         __u16 device_type;
 129 };
 130
 131
 132 static int kobil_startup(struct usb_serial *serial)
 133 {
 134         int i;
 135         struct kobil_private *priv;
 136         struct usb_device *pdev;
 137         struct usb_host_config *actconfig;
 138         struct usb_interface *interface;
 139         struct usb_host_interface *altsetting;
 140         struct usb_host_endpoint *endpoint;
 141
 142         priv = kmalloc(sizeof(struct kobil_private), GFP_KERNEL);
 143         if (!priv)
 144                 return -ENOMEM;
 145
 146         priv->filled = 0;
 147         priv->cur_pos = 0;
 148         priv->device_type = le16_to_cpu(serial->dev->descriptor.idProduct);
 149
 150         switch (priv->device_type) {
 151         case KOBIL_ADAPTER_B_PRODUCT_ID:
 152                 printk(KERN_DEBUG "KOBIL B1 PRO / KAAN PRO detected\n");
 153                 break;
 154         case KOBIL_ADAPTER_K_PRODUCT_ID:
 155                 printk(KERN_DEBUG
 156                   "KOBIL KAAN Standard Plus / SecOVID Reader Plus detected\n");
 157                 break;
 158         case KOBIL_USBTWIN_PRODUCT_ID:
 159                 printk(KERN_DEBUG "KOBIL USBTWIN detected\n");
 160                 break;
 161         case KOBIL_KAAN_SIM_PRODUCT_ID:
 162                 printk(KERN_DEBUG "KOBIL KAAN SIM detected\n");
 163                 break;
 164         }
 165         usb_set_serial_port_data(serial->port[0], priv);
 166
 167         /* search for the necessary endpoints */
 168         pdev = serial->dev;
 169         actconfig = pdev->actconfig;
 170         interface = actconfig->interface[0];
 171         altsetting = interface->cur_altsetting;
 172         endpoint = altsetting->endpoint;
 173
 174         for (i = 0; i < altsetting->desc.bNumEndpoints; i++) {
 175                 endpoint = &altsetting->endpoint[i];
 176                 if (usb_endpoint_is_int_out(&endpoint->desc)) {
 177                         dbg("%s Found interrupt out endpoint. Address: %d",
 178                                 __func__, endpoint->desc.bEndpointAddress);
 179                         priv->write_int_endpoint_address =
 180                                 endpoint->desc.bEndpointAddress;
 181                 }
 182                 if (usb_endpoint_is_int_in(&endpoint->desc)) {
 183                         dbg("%s Found interrupt in  endpoint. Address: %d",
 184                                 __func__, endpoint->desc.bEndpointAddress);
 185                         priv->read_int_endpoint_address =
 186                                 endpoint->desc.bEndpointAddress;
 187                 }
 188         }
 189         return 0;
 190 }
 191
 192
 193 static void kobil_release(struct usb_serial *serial)
 194 {
 195         int i;
 196         dbg("%s - port %d", __func__, serial->port[0]->number);
 197
 198         for (i = 0; i < serial->num_ports; ++i)
 199                 kfree(usb_get_serial_port_data(serial->port[i]));
 200 }
 201
 202 static void kobil_init_termios(struct tty_struct *tty)
 203 {
 204         /* Default to echo off and other sane device settings */
 205         tty->termios->c_lflag = 0;
 206         tty->termios->c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN | XCASE);
 207         tty->termios->c_iflag = IGNBRK | IGNPAR | IXOFF;
 208         /* do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D) */
 209         tty->termios->c_oflag &= ~ONLCR;
 210 }
 211
 212 static int kobil_open(struct tty_struct *tty, struct usb_serial_port *port)
 213 {
 214         int result = 0;
 215         struct kobil_private *priv;
 216         unsigned char *transfer_buffer;
 217         int transfer_buffer_length = 8;
 218         int write_urb_transfer_buffer_length = 8;
 219
 220         dbg("%s - port %d", __func__, port->number);
 221         priv = usb_get_serial_port_data(port);
 222
 223         /* allocate memory for transfer buffer */
 224         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 225         if (!transfer_buffer)
 226                 return -ENOMEM;
 227
 228         /* allocate write_urb */
 229         if (!port->write_urb) {
 230                 dbg("%s - port %d  Allocating port->write_urb",
 231                                                 __func__, port->number);
 232                 port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
 233                 if (!port->write_urb) {
 234                         dbg("%s - port %d usb_alloc_urb failed",
 235                                                 __func__, port->number);
 236                         kfree(transfer_buffer);
 237                         return -ENOMEM;
 238                 }
 239         }
 240
 241         /* allocate memory for write_urb transfer buffer */
 242         port->write_urb->transfer_buffer =
 243                         kmalloc(write_urb_transfer_buffer_length, GFP_KERNEL);
 244         if (!port->write_urb->transfer_buffer) {
 245                 kfree(transfer_buffer);
 246                 usb_free_urb(port->write_urb);
 247                 port->write_urb = NULL;
 248                 return -ENOMEM;
 249         }
 250
 251         /* get hardware version */
 252         result = usb_control_msg(port->serial->dev,
 253                           usb_rcvctrlpipe(port->serial->dev, 0),
 254                           SUSBCRequest_GetMisc,
 255                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 256                           SUSBCR_MSC_GetHWVersion,
 257                           0,
 258                           transfer_buffer,
 259                           transfer_buffer_length,
 260                           KOBIL_TIMEOUT
 261         );
 262         dbg("%s - port %d Send get_HW_version URB returns: %i",
 263                 __func__, port->number, result);
 264         dbg("Harware version: %i.%i.%i",
 265                 transfer_buffer[0], transfer_buffer[1], transfer_buffer[2]);
 266
 267         /* get firmware version */
 268         result = usb_control_msg(port->serial->dev,
 269                           usb_rcvctrlpipe(port->serial->dev, 0),
 270                           SUSBCRequest_GetMisc,
 271                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 272                           SUSBCR_MSC_GetFWVersion,
 273                           0,
 274                           transfer_buffer,
 275                           transfer_buffer_length,
 276                           KOBIL_TIMEOUT
 277         );
 278         dbg("%s - port %d Send get_FW_version URB returns: %i",
 279                                         __func__, port->number, result);
 280         dbg("Firmware version: %i.%i.%i",
 281                 transfer_buffer[0], transfer_buffer[1], transfer_buffer[2]);
 282
 283         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 284                         priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
 285                 /* Setting Baudrate, Parity and Stopbits */
 286                 result = usb_control_msg(port->serial->dev,
 287                           usb_rcvctrlpipe(port->serial->dev, 0),
 288                           SUSBCRequest_SetBaudRateParityAndStopBits,
 289                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 290                           SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity |
 291                                                         SUSBCR_SPASB_1StopBit,
 292                           0,
 293                           transfer_buffer,
 294                           0,
 295                           KOBIL_TIMEOUT
 296                 );
 297                 dbg("%s - port %d Send set_baudrate URB returns: %i",
 298                                         __func__, port->number, result);
 299
 300                 /* reset all queues */
 301                 result = usb_control_msg(port->serial->dev,
 302                           usb_rcvctrlpipe(port->serial->dev, 0),
 303                           SUSBCRequest_Misc,
 304                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 305                           SUSBCR_MSC_ResetAllQueues,
 306                           0,
 307                           transfer_buffer,
 308                           0,
 309                           KOBIL_TIMEOUT
 310                 );
 311                 dbg("%s - port %d Send reset_all_queues URB returns: %i",
 312                                         __func__, port->number, result);
 313         }
 314         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
 315             priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 316             priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 317                 /* start reading (Adapter B 'cause PNP string) */
 318                 result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
 319                 dbg("%s - port %d Send read URB returns: %i",
 320                                         __func__, port->number, result);
 321         }
 322
 323         kfree(transfer_buffer);
 324         return 0;
 325 }
 326
 327
 328 static void kobil_close(struct usb_serial_port *port)
 329 {
 330         dbg("%s - port %d", __func__, port->number);
 331
 332         /* FIXME: Add rts/dtr methods */
 333         if (port->write_urb) {
 334                 usb_poison_urb(port->write_urb);
 335                 kfree(port->write_urb->transfer_buffer);
 336                 usb_free_urb(port->write_urb);
 337                 port->write_urb = NULL;
 338         }
 339         usb_kill_urb(port->interrupt_in_urb);
 340 }
 341
 342
 343 static void kobil_read_int_callback(struct urb *urb)
 344 {
 345         int result;
 346         struct usb_serial_port *port = urb->context;
 347         struct tty_struct *tty;
 348         unsigned char *data = urb->transfer_buffer;
 349         int status = urb->status;
 350 /*      char *dbg_data; */
 351
 352         dbg("%s - port %d", __func__, port->number);
 353
 354         if (status) {
 355                 dbg("%s - port %d Read int status not zero: %d",
 356                     __func__, port->number, status);
 357                 return;
 358         }
 359
 360         tty = tty_port_tty_get(&port->port);
 361         if (tty && urb->actual_length) {
 362
 363                 /* BEGIN DEBUG */
 364                 /*
 365                   dbg_data = kzalloc((3 *  purb->actual_length + 10)
 366                                                 * sizeof(char), GFP_KERNEL);
 367                   if (! dbg_data) {
 368                           return;
 369                   }
 370                   for (i = 0; i < purb->actual_length; i++) {
 371                           sprintf(dbg_data +3*i, "%02X ", data[i]);
 372                   }
 373                   dbg(" <-- %s", dbg_data);
 374                   kfree(dbg_data);
 375                 */
 376                 /* END DEBUG */
 377
 378                 tty_insert_flip_string(tty, data, urb->actual_length);
 379                 tty_flip_buffer_push(tty);
 380         }
 381         tty_kref_put(tty);
 382
 383         result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
 384         dbg("%s - port %d Send read URB returns: %i",
 385                         __func__, port->number, result);
 386 }
 387
 388
 389 static void kobil_write_callback(struct urb *purb)
 390 {
 391 }
 392
 393
 394 static int kobil_write(struct tty_struct *tty, struct usb_serial_port *port,
 395                         const unsigned char *buf, int count)
 396 {
 397         int length = 0;
 398         int result = 0;
 399         int todo = 0;
 400         struct kobil_private *priv;
 401
 402         if (count == 0) {
 403                 dbg("%s - port %d write request of 0 bytes",
 404                                                 __func__, port->number);
 405                 return 0;
 406         }
 407
 408         priv = usb_get_serial_port_data(port);
 409
 410         if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
 411                 dbg("%s - port %d Error: write request bigger than buffer size", __func__, port->number);
 412                 return -ENOMEM;
 413         }
 414
 415         /* Copy data to buffer */
 416         memcpy(priv->buf + priv->filled, buf, count);
 417         usb_serial_debug_data(debug, &port->dev, __func__, count,
 418                                                 priv->buf + priv->filled);
 419         priv->filled = priv->filled + count;
 420
 421         /* only send complete block. TWIN, KAAN SIM and adapter K
 422            use the same protocol. */
 423         if (((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) ||
 424              ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4)))) {
 425                 /* stop reading (except TWIN and KAAN SIM) */
 426                 if ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID)
 427                         || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID))
 428                         usb_kill_urb(port->interrupt_in_urb);
 429
 430                 todo = priv->filled - priv->cur_pos;
 431
 432                 while (todo > 0) {
 433                         /* max 8 byte in one urb (endpoint size) */
 434                         length = (todo < 8) ? todo : 8;
 435                         /* copy data to transfer buffer */
 436                         memcpy(port->write_urb->transfer_buffer,
 437                                         priv->buf + priv->cur_pos, length);
 438                         usb_fill_int_urb(port->write_urb,
 439                                   port->serial->dev,
 440                                   usb_sndintpipe(port->serial->dev,
 441                                         priv->write_int_endpoint_address),
 442                                   port->write_urb->transfer_buffer,
 443                                   length,
 444                                   kobil_write_callback,
 445                                   port,
 446                                   8
 447                         );
 448
 449                         priv->cur_pos = priv->cur_pos + length;
 450                         result = usb_submit_urb(port->write_urb, GFP_NOIO);
 451                         dbg("%s - port %d Send write URB returns: %i",
 452                                         __func__, port->number, result);
 453                         todo = priv->filled - priv->cur_pos;
 454
 455                         if (todo > 0)
 456                                 msleep(24);
 457                 }
 458
 459                 priv->filled = 0;
 460                 priv->cur_pos = 0;
 461
 462                 /* start reading (except TWIN and KAAN SIM) */
 463                 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 464                         priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
 465                         result = usb_submit_urb(port->interrupt_in_urb,
 466                                                                 GFP_NOIO);
 467                         dbg("%s - port %d Send read URB returns: %i",
 468                                         __func__, port->number, result);
 469                 }
 470         }
 471         return count;
 472 }
 473
 474
 475 static int kobil_write_room(struct tty_struct *tty)
 476 {
 477         /* dbg("%s - port %d", __func__, port->number); */
 478         /* FIXME */
 479         return 8;
 480 }
 481
 482
 483 static int kobil_tiocmget(struct tty_struct *tty)
 484 {
 485         struct usb_serial_port *port = tty->driver_data;
 486         struct kobil_private *priv;
 487         int result;
 488         unsigned char *transfer_buffer;
 489         int transfer_buffer_length = 8;
 490
 491         priv = usb_get_serial_port_data(port);
 492         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
 493                         || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 494                 /* This device doesn't support ioctl calls */
 495                 return -EINVAL;
 496         }
 497
 498         /* allocate memory for transfer buffer */
 499         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 500         if (!transfer_buffer)
 501                 return -ENOMEM;
 502
 503         result = usb_control_msg(port->serial->dev,
 504                           usb_rcvctrlpipe(port->serial->dev, 0),
 505                           SUSBCRequest_GetStatusLineState,
 506                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 507                           0,
 508                           0,
 509                           transfer_buffer,
 510                           transfer_buffer_length,
 511                           KOBIL_TIMEOUT);
 512
 513         dbg("%s - port %d Send get_status_line_state URB returns: %i. Statusline: %02x",
 514             __func__, port->number, result, transfer_buffer[0]);
 515
 516         result = 0;
 517         if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0)
 518                 result = TIOCM_DSR;
 519         kfree(transfer_buffer);
 520         return result;
 521 }
 522
 523 static int kobil_tiocmset(struct tty_struct *tty,
 524                            unsigned int set, unsigned int clear)
 525 {
 526         struct usb_serial_port *port = tty->driver_data;
 527         struct kobil_private *priv;
 528         int result;
 529         int dtr = 0;
 530         int rts = 0;
 531         unsigned char *transfer_buffer;
 532         int transfer_buffer_length = 8;
 533
 534         /* FIXME: locking ? */
 535         priv = usb_get_serial_port_data(port);
 536         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
 537                 || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 538                 /* This device doesn't support ioctl calls */
 539                 return -EINVAL;
 540         }
 541
 542         /* allocate memory for transfer buffer */
 543         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 544         if (!transfer_buffer)
 545                 return -ENOMEM;
 546
 547         if (set & TIOCM_RTS)
 548                 rts = 1;
 549         if (set & TIOCM_DTR)
 550                 dtr = 1;
 551         if (clear & TIOCM_RTS)
 552                 rts = 0;
 553         if (clear & TIOCM_DTR)
 554                 dtr = 0;
 555
 556         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
 557                 if (dtr != 0)
 558                         dbg("%s - port %d Setting DTR",
 559                                                 __func__, port->number);
 560                 else
 561                         dbg("%s - port %d Clearing DTR",
 562                                                 __func__, port->number);
 563                 result = usb_control_msg(port->serial->dev,
 564                           usb_rcvctrlpipe(port->serial->dev, 0),
 565                           SUSBCRequest_SetStatusLinesOrQueues,
 566                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 567                           ((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
 568                           0,
 569                           transfer_buffer,
 570                           0,
 571                           KOBIL_TIMEOUT);
 572         } else {
 573                 if (rts != 0)
 574                         dbg("%s - port %d Setting RTS",
 575                                                 __func__, port->number);
 576                 else
 577                         dbg("%s - port %d Clearing RTS",
 578                                                 __func__, 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                         ((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
 584                         0,
 585                         transfer_buffer,
 586                         0,
 587                         KOBIL_TIMEOUT);
 588         }
 589         dbg("%s - port %d Send set_status_line URB returns: %i",
 590                                         __func__, port->number, result);
 591         kfree(transfer_buffer);
 592         return (result < 0) ? result : 0;
 593 }
 594
 595 static void kobil_set_termios(struct tty_struct *tty,
 596                         struct usb_serial_port *port, struct ktermios *old)
 597 {
 598         struct kobil_private *priv;
 599         int result;
 600         unsigned short urb_val = 0;
 601         int c_cflag = tty->termios->c_cflag;
 602         speed_t speed;
 603
 604         priv = usb_get_serial_port_data(port);
 605         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
 606                         priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 607                 /* This device doesn't support ioctl calls */
 608                 *tty->termios = *old;
 609                 return;
 610         }
 611
 612         speed = tty_get_baud_rate(tty);
 613         switch (speed) {
 614         case 1200:
 615                 urb_val = SUSBCR_SBR_1200;
 616                 break;
 617         default:
 618                 speed = 9600;
 619         case 9600:
 620                 urb_val = SUSBCR_SBR_9600;
 621                 break;
 622         }
 623         urb_val |= (c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits :
 624                                                         SUSBCR_SPASB_1StopBit;
 625         if (c_cflag & PARENB) {
 626                 if  (c_cflag & PARODD)
 627                         urb_val |= SUSBCR_SPASB_OddParity;
 628                 else
 629                         urb_val |= SUSBCR_SPASB_EvenParity;
 630         } else
 631                 urb_val |= SUSBCR_SPASB_NoParity;
 632         tty->termios->c_cflag &= ~CMSPAR;
 633         tty_encode_baud_rate(tty, speed, speed);
 634
 635         result = usb_control_msg(port->serial->dev,
 636                   usb_rcvctrlpipe(port->serial->dev, 0),
 637                   SUSBCRequest_SetBaudRateParityAndStopBits,
 638                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 639                   urb_val,
 640                   0,
 641                   NULL,
 642                   0,
 643                   KOBIL_TIMEOUT
 644                 );
 645 }
 646
 647 static int kobil_ioctl(struct tty_struct *tty,
 648                                         unsigned int cmd, unsigned long arg)
 649 {
 650         struct usb_serial_port *port = tty->driver_data;
 651         struct kobil_private *priv = usb_get_serial_port_data(port);
 652         unsigned char *transfer_buffer;
 653         int transfer_buffer_length = 8;
 654         int result;
 655
 656         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
 657                         priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)
 658                 /* This device doesn't support ioctl calls */
 659                 return -ENOIOCTLCMD;
 660
 661         switch (cmd) {
 662         case TCFLSH:
 663                 transfer_buffer = kmalloc(transfer_buffer_length, GFP_KERNEL);
 664                 if (!transfer_buffer)
 665                         return -ENOBUFS;
 666
 667                 result = usb_control_msg(port->serial->dev,
 668                           usb_rcvctrlpipe(port->serial->dev, 0),
 669                           SUSBCRequest_Misc,
 670                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 671                           SUSBCR_MSC_ResetAllQueues,
 672                           0,
 673                           NULL, /* transfer_buffer, */
 674                           0,
 675                           KOBIL_TIMEOUT
 676                         );
 677
 678                 dbg("%s - port %d Send reset_all_queues (FLUSH) URB returns: %i", __func__, port->number, result);
 679                 kfree(transfer_buffer);
 680                 return (result < 0) ? -EIO: 0;
 681         default:
 682                 return -ENOIOCTLCMD;
 683         }
 684 }
 685
 686 module_usb_serial_driver(kobil_driver, serial_drivers);
 687
 688 MODULE_AUTHOR(DRIVER_AUTHOR);
 689 MODULE_DESCRIPTION(DRIVER_DESC);
 690 MODULE_LICENSE("GPL");
 691
 692 module_param(debug, bool, S_IRUGO | S_IWUSR);
 693 MODULE_PARM_DESC(debug, "Debug enabled or not");