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 MODULE_DEVICE_TABLE(usb, id_table);
  85
  86 static struct usb_serial_driver kobil_device = {
  87         .driver = {
  88                 .owner =        THIS_MODULE,
  89                 .name =         "kobil",
  90         },
  91         .description =          "KOBIL USB smart card terminal",
  92         .id_table =             id_table,
  93         .num_ports =            1,
  94         .attach =               kobil_startup,
  95         .release =              kobil_release,
  96         .ioctl =                kobil_ioctl,
  97         .set_termios =          kobil_set_termios,
  98         .init_termios =         kobil_init_termios,
  99         .tiocmget =             kobil_tiocmget,
 100         .tiocmset =             kobil_tiocmset,
 101         .open =                 kobil_open,
 102         .close =                kobil_close,
 103         .write =                kobil_write,
 104         .write_room =           kobil_write_room,
 105         .read_int_callback =    kobil_read_int_callback,
 106 };
 107
 108 static struct usb_serial_driver * const serial_drivers[] = {
 109         &kobil_device, NULL
 110 };
 111
 112 struct kobil_private {
 113         int write_int_endpoint_address;
 114         int read_int_endpoint_address;
 115         unsigned char buf[KOBIL_BUF_LENGTH]; /* buffer for the APDU to send */
 116         int filled;  /* index of the last char in buf */
 117         int cur_pos; /* index of the next char to send in buf */
 118         __u16 device_type;
 119 };
 120
 121
 122 static int kobil_startup(struct usb_serial *serial)
 123 {
 124         int i;
 125         struct kobil_private *priv;
 126         struct usb_device *pdev;
 127         struct usb_host_config *actconfig;
 128         struct usb_interface *interface;
 129         struct usb_host_interface *altsetting;
 130         struct usb_host_endpoint *endpoint;
 131
 132         priv = kmalloc(sizeof(struct kobil_private), GFP_KERNEL);
 133         if (!priv)
 134                 return -ENOMEM;
 135
 136         priv->filled = 0;
 137         priv->cur_pos = 0;
 138         priv->device_type = le16_to_cpu(serial->dev->descriptor.idProduct);
 139
 140         switch (priv->device_type) {
 141         case KOBIL_ADAPTER_B_PRODUCT_ID:
 142                 printk(KERN_DEBUG "KOBIL B1 PRO / KAAN PRO detected\n");
 143                 break;
 144         case KOBIL_ADAPTER_K_PRODUCT_ID:
 145                 printk(KERN_DEBUG
 146                   "KOBIL KAAN Standard Plus / SecOVID Reader Plus detected\n");
 147                 break;
 148         case KOBIL_USBTWIN_PRODUCT_ID:
 149                 printk(KERN_DEBUG "KOBIL USBTWIN detected\n");
 150                 break;
 151         case KOBIL_KAAN_SIM_PRODUCT_ID:
 152                 printk(KERN_DEBUG "KOBIL KAAN SIM detected\n");
 153                 break;
 154         }
 155         usb_set_serial_port_data(serial->port[0], priv);
 156
 157         /* search for the necessary endpoints */
 158         pdev = serial->dev;
 159         actconfig = pdev->actconfig;
 160         interface = actconfig->interface[0];
 161         altsetting = interface->cur_altsetting;
 162         endpoint = altsetting->endpoint;
 163
 164         for (i = 0; i < altsetting->desc.bNumEndpoints; i++) {
 165                 endpoint = &altsetting->endpoint[i];
 166                 if (usb_endpoint_is_int_out(&endpoint->desc)) {
 167                         dbg("%s Found interrupt out endpoint. Address: %d",
 168                                 __func__, endpoint->desc.bEndpointAddress);
 169                         priv->write_int_endpoint_address =
 170                                 endpoint->desc.bEndpointAddress;
 171                 }
 172                 if (usb_endpoint_is_int_in(&endpoint->desc)) {
 173                         dbg("%s Found interrupt in  endpoint. Address: %d",
 174                                 __func__, endpoint->desc.bEndpointAddress);
 175                         priv->read_int_endpoint_address =
 176                                 endpoint->desc.bEndpointAddress;
 177                 }
 178         }
 179         return 0;
 180 }
 181
 182
 183 static void kobil_release(struct usb_serial *serial)
 184 {
 185         int i;
 186
 187         for (i = 0; i < serial->num_ports; ++i)
 188                 kfree(usb_get_serial_port_data(serial->port[i]));
 189 }
 190
 191 static void kobil_init_termios(struct tty_struct *tty)
 192 {
 193         /* Default to echo off and other sane device settings */
 194         tty->termios->c_lflag = 0;
 195         tty->termios->c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN | XCASE);
 196         tty->termios->c_iflag = IGNBRK | IGNPAR | IXOFF;
 197         /* do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D) */
 198         tty->termios->c_oflag &= ~ONLCR;
 199 }
 200
 201 static int kobil_open(struct tty_struct *tty, struct usb_serial_port *port)
 202 {
 203         int result = 0;
 204         struct kobil_private *priv;
 205         unsigned char *transfer_buffer;
 206         int transfer_buffer_length = 8;
 207         int write_urb_transfer_buffer_length = 8;
 208
 209         priv = usb_get_serial_port_data(port);
 210
 211         /* allocate memory for transfer buffer */
 212         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 213         if (!transfer_buffer)
 214                 return -ENOMEM;
 215
 216         /* allocate write_urb */
 217         if (!port->write_urb) {
 218                 dbg("%s - port %d  Allocating port->write_urb",
 219                                                 __func__, port->number);
 220                 port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
 221                 if (!port->write_urb) {
 222                         dbg("%s - port %d usb_alloc_urb failed",
 223                                                 __func__, port->number);
 224                         kfree(transfer_buffer);
 225                         return -ENOMEM;
 226                 }
 227         }
 228
 229         /* allocate memory for write_urb transfer buffer */
 230         port->write_urb->transfer_buffer =
 231                         kmalloc(write_urb_transfer_buffer_length, GFP_KERNEL);
 232         if (!port->write_urb->transfer_buffer) {
 233                 kfree(transfer_buffer);
 234                 usb_free_urb(port->write_urb);
 235                 port->write_urb = NULL;
 236                 return -ENOMEM;
 237         }
 238
 239         /* get hardware version */
 240         result = usb_control_msg(port->serial->dev,
 241                           usb_rcvctrlpipe(port->serial->dev, 0),
 242                           SUSBCRequest_GetMisc,
 243                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 244                           SUSBCR_MSC_GetHWVersion,
 245                           0,
 246                           transfer_buffer,
 247                           transfer_buffer_length,
 248                           KOBIL_TIMEOUT
 249         );
 250         dbg("%s - port %d Send get_HW_version URB returns: %i",
 251                 __func__, port->number, result);
 252         dbg("Harware version: %i.%i.%i",
 253                 transfer_buffer[0], transfer_buffer[1], transfer_buffer[2]);
 254
 255         /* get firmware version */
 256         result = usb_control_msg(port->serial->dev,
 257                           usb_rcvctrlpipe(port->serial->dev, 0),
 258                           SUSBCRequest_GetMisc,
 259                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 260                           SUSBCR_MSC_GetFWVersion,
 261                           0,
 262                           transfer_buffer,
 263                           transfer_buffer_length,
 264                           KOBIL_TIMEOUT
 265         );
 266         dbg("%s - port %d Send get_FW_version URB returns: %i",
 267                                         __func__, port->number, result);
 268         dbg("Firmware version: %i.%i.%i",
 269                 transfer_buffer[0], transfer_buffer[1], transfer_buffer[2]);
 270
 271         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 272                         priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
 273                 /* Setting Baudrate, Parity and Stopbits */
 274                 result = usb_control_msg(port->serial->dev,
 275                           usb_rcvctrlpipe(port->serial->dev, 0),
 276                           SUSBCRequest_SetBaudRateParityAndStopBits,
 277                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 278                           SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity |
 279                                                         SUSBCR_SPASB_1StopBit,
 280                           0,
 281                           transfer_buffer,
 282                           0,
 283                           KOBIL_TIMEOUT
 284                 );
 285                 dbg("%s - port %d Send set_baudrate URB returns: %i",
 286                                         __func__, port->number, result);
 287
 288                 /* reset all queues */
 289                 result = usb_control_msg(port->serial->dev,
 290                           usb_rcvctrlpipe(port->serial->dev, 0),
 291                           SUSBCRequest_Misc,
 292                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 293                           SUSBCR_MSC_ResetAllQueues,
 294                           0,
 295                           transfer_buffer,
 296                           0,
 297                           KOBIL_TIMEOUT
 298                 );
 299                 dbg("%s - port %d Send reset_all_queues URB returns: %i",
 300                                         __func__, port->number, result);
 301         }
 302         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
 303             priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 304             priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 305                 /* start reading (Adapter B 'cause PNP string) */
 306                 result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
 307                 dbg("%s - port %d Send read URB returns: %i",
 308                                         __func__, port->number, result);
 309         }
 310
 311         kfree(transfer_buffer);
 312         return 0;
 313 }
 314
 315
 316 static void kobil_close(struct usb_serial_port *port)
 317 {
 318         /* FIXME: Add rts/dtr methods */
 319         if (port->write_urb) {
 320                 usb_poison_urb(port->write_urb);
 321                 kfree(port->write_urb->transfer_buffer);
 322                 usb_free_urb(port->write_urb);
 323                 port->write_urb = NULL;
 324         }
 325         usb_kill_urb(port->interrupt_in_urb);
 326 }
 327
 328
 329 static void kobil_read_int_callback(struct urb *urb)
 330 {
 331         int result;
 332         struct usb_serial_port *port = urb->context;
 333         struct tty_struct *tty;
 334         unsigned char *data = urb->transfer_buffer;
 335         int status = urb->status;
 336 /*      char *dbg_data; */
 337
 338         if (status) {
 339                 dbg("%s - port %d Read int status not zero: %d",
 340                     __func__, port->number, status);
 341                 return;
 342         }
 343
 344         tty = tty_port_tty_get(&port->port);
 345         if (tty && urb->actual_length) {
 346
 347                 /* BEGIN DEBUG */
 348                 /*
 349                   dbg_data = kzalloc((3 *  purb->actual_length + 10)
 350                                                 * sizeof(char), GFP_KERNEL);
 351                   if (! dbg_data) {
 352                           return;
 353                   }
 354                   for (i = 0; i < purb->actual_length; i++) {
 355                           sprintf(dbg_data +3*i, "%02X ", data[i]);
 356                   }
 357                   dbg(" <-- %s", dbg_data);
 358                   kfree(dbg_data);
 359                 */
 360                 /* END DEBUG */
 361
 362                 tty_insert_flip_string(tty, data, urb->actual_length);
 363                 tty_flip_buffer_push(tty);
 364         }
 365         tty_kref_put(tty);
 366
 367         result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
 368         dbg("%s - port %d Send read URB returns: %i",
 369                         __func__, port->number, result);
 370 }
 371
 372
 373 static void kobil_write_callback(struct urb *purb)
 374 {
 375 }
 376
 377
 378 static int kobil_write(struct tty_struct *tty, struct usb_serial_port *port,
 379                         const unsigned char *buf, int count)
 380 {
 381         int length = 0;
 382         int result = 0;
 383         int todo = 0;
 384         struct kobil_private *priv;
 385
 386         if (count == 0) {
 387                 dbg("%s - port %d write request of 0 bytes",
 388                                                 __func__, port->number);
 389                 return 0;
 390         }
 391
 392         priv = usb_get_serial_port_data(port);
 393
 394         if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
 395                 dbg("%s - port %d Error: write request bigger than buffer size", __func__, port->number);
 396                 return -ENOMEM;
 397         }
 398
 399         /* Copy data to buffer */
 400         memcpy(priv->buf + priv->filled, buf, count);
 401         usb_serial_debug_data(debug, &port->dev, __func__, count,
 402                                                 priv->buf + priv->filled);
 403         priv->filled = priv->filled + count;
 404
 405         /* only send complete block. TWIN, KAAN SIM and adapter K
 406            use the same protocol. */
 407         if (((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) ||
 408              ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4)))) {
 409                 /* stop reading (except TWIN and KAAN SIM) */
 410                 if ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID)
 411                         || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID))
 412                         usb_kill_urb(port->interrupt_in_urb);
 413
 414                 todo = priv->filled - priv->cur_pos;
 415
 416                 while (todo > 0) {
 417                         /* max 8 byte in one urb (endpoint size) */
 418                         length = (todo < 8) ? todo : 8;
 419                         /* copy data to transfer buffer */
 420                         memcpy(port->write_urb->transfer_buffer,
 421                                         priv->buf + priv->cur_pos, length);
 422                         usb_fill_int_urb(port->write_urb,
 423                                   port->serial->dev,
 424                                   usb_sndintpipe(port->serial->dev,
 425                                         priv->write_int_endpoint_address),
 426                                   port->write_urb->transfer_buffer,
 427                                   length,
 428                                   kobil_write_callback,
 429                                   port,
 430                                   8
 431                         );
 432
 433                         priv->cur_pos = priv->cur_pos + length;
 434                         result = usb_submit_urb(port->write_urb, GFP_NOIO);
 435                         dbg("%s - port %d Send write URB returns: %i",
 436                                         __func__, port->number, result);
 437                         todo = priv->filled - priv->cur_pos;
 438
 439                         if (todo > 0)
 440                                 msleep(24);
 441                 }
 442
 443                 priv->filled = 0;
 444                 priv->cur_pos = 0;
 445
 446                 /* start reading (except TWIN and KAAN SIM) */
 447                 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
 448                         priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
 449                         result = usb_submit_urb(port->interrupt_in_urb,
 450                                                                 GFP_NOIO);
 451                         dbg("%s - port %d Send read URB returns: %i",
 452                                         __func__, port->number, result);
 453                 }
 454         }
 455         return count;
 456 }
 457
 458
 459 static int kobil_write_room(struct tty_struct *tty)
 460 {
 461         /* FIXME */
 462         return 8;
 463 }
 464
 465
 466 static int kobil_tiocmget(struct tty_struct *tty)
 467 {
 468         struct usb_serial_port *port = tty->driver_data;
 469         struct kobil_private *priv;
 470         int result;
 471         unsigned char *transfer_buffer;
 472         int transfer_buffer_length = 8;
 473
 474         priv = usb_get_serial_port_data(port);
 475         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
 476                         || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 477                 /* This device doesn't support ioctl calls */
 478                 return -EINVAL;
 479         }
 480
 481         /* allocate memory for transfer buffer */
 482         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 483         if (!transfer_buffer)
 484                 return -ENOMEM;
 485
 486         result = usb_control_msg(port->serial->dev,
 487                           usb_rcvctrlpipe(port->serial->dev, 0),
 488                           SUSBCRequest_GetStatusLineState,
 489                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
 490                           0,
 491                           0,
 492                           transfer_buffer,
 493                           transfer_buffer_length,
 494                           KOBIL_TIMEOUT);
 495
 496         dbg("%s - port %d Send get_status_line_state URB returns: %i. Statusline: %02x",
 497             __func__, port->number, result, transfer_buffer[0]);
 498
 499         result = 0;
 500         if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0)
 501                 result = TIOCM_DSR;
 502         kfree(transfer_buffer);
 503         return result;
 504 }
 505
 506 static int kobil_tiocmset(struct tty_struct *tty,
 507                            unsigned int set, unsigned int clear)
 508 {
 509         struct usb_serial_port *port = tty->driver_data;
 510         struct kobil_private *priv;
 511         int result;
 512         int dtr = 0;
 513         int rts = 0;
 514         unsigned char *transfer_buffer;
 515         int transfer_buffer_length = 8;
 516
 517         /* FIXME: locking ? */
 518         priv = usb_get_serial_port_data(port);
 519         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
 520                 || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 521                 /* This device doesn't support ioctl calls */
 522                 return -EINVAL;
 523         }
 524
 525         /* allocate memory for transfer buffer */
 526         transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
 527         if (!transfer_buffer)
 528                 return -ENOMEM;
 529
 530         if (set & TIOCM_RTS)
 531                 rts = 1;
 532         if (set & TIOCM_DTR)
 533                 dtr = 1;
 534         if (clear & TIOCM_RTS)
 535                 rts = 0;
 536         if (clear & TIOCM_DTR)
 537                 dtr = 0;
 538
 539         if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
 540                 if (dtr != 0)
 541                         dbg("%s - port %d Setting DTR",
 542                                                 __func__, port->number);
 543                 else
 544                         dbg("%s - port %d Clearing DTR",
 545                                                 __func__, port->number);
 546                 result = usb_control_msg(port->serial->dev,
 547                           usb_rcvctrlpipe(port->serial->dev, 0),
 548                           SUSBCRequest_SetStatusLinesOrQueues,
 549                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 550                           ((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
 551                           0,
 552                           transfer_buffer,
 553                           0,
 554                           KOBIL_TIMEOUT);
 555         } else {
 556                 if (rts != 0)
 557                         dbg("%s - port %d Setting RTS",
 558                                                 __func__, port->number);
 559                 else
 560                         dbg("%s - port %d Clearing RTS",
 561                                                 __func__, port->number);
 562                 result = usb_control_msg(port->serial->dev,
 563                         usb_rcvctrlpipe(port->serial->dev, 0),
 564                         SUSBCRequest_SetStatusLinesOrQueues,
 565                         USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 566                         ((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
 567                         0,
 568                         transfer_buffer,
 569                         0,
 570                         KOBIL_TIMEOUT);
 571         }
 572         dbg("%s - port %d Send set_status_line URB returns: %i",
 573                                         __func__, port->number, result);
 574         kfree(transfer_buffer);
 575         return (result < 0) ? result : 0;
 576 }
 577
 578 static void kobil_set_termios(struct tty_struct *tty,
 579                         struct usb_serial_port *port, struct ktermios *old)
 580 {
 581         struct kobil_private *priv;
 582         int result;
 583         unsigned short urb_val = 0;
 584         int c_cflag = tty->termios->c_cflag;
 585         speed_t speed;
 586
 587         priv = usb_get_serial_port_data(port);
 588         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
 589                         priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
 590                 /* This device doesn't support ioctl calls */
 591                 *tty->termios = *old;
 592                 return;
 593         }
 594
 595         speed = tty_get_baud_rate(tty);
 596         switch (speed) {
 597         case 1200:
 598                 urb_val = SUSBCR_SBR_1200;
 599                 break;
 600         default:
 601                 speed = 9600;
 602         case 9600:
 603                 urb_val = SUSBCR_SBR_9600;
 604                 break;
 605         }
 606         urb_val |= (c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits :
 607                                                         SUSBCR_SPASB_1StopBit;
 608         if (c_cflag & PARENB) {
 609                 if  (c_cflag & PARODD)
 610                         urb_val |= SUSBCR_SPASB_OddParity;
 611                 else
 612                         urb_val |= SUSBCR_SPASB_EvenParity;
 613         } else
 614                 urb_val |= SUSBCR_SPASB_NoParity;
 615         tty->termios->c_cflag &= ~CMSPAR;
 616         tty_encode_baud_rate(tty, speed, speed);
 617
 618         result = usb_control_msg(port->serial->dev,
 619                   usb_rcvctrlpipe(port->serial->dev, 0),
 620                   SUSBCRequest_SetBaudRateParityAndStopBits,
 621                   USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 622                   urb_val,
 623                   0,
 624                   NULL,
 625                   0,
 626                   KOBIL_TIMEOUT
 627                 );
 628 }
 629
 630 static int kobil_ioctl(struct tty_struct *tty,
 631                                         unsigned int cmd, unsigned long arg)
 632 {
 633         struct usb_serial_port *port = tty->driver_data;
 634         struct kobil_private *priv = usb_get_serial_port_data(port);
 635         unsigned char *transfer_buffer;
 636         int transfer_buffer_length = 8;
 637         int result;
 638
 639         if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
 640                         priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)
 641                 /* This device doesn't support ioctl calls */
 642                 return -ENOIOCTLCMD;
 643
 644         switch (cmd) {
 645         case TCFLSH:
 646                 transfer_buffer = kmalloc(transfer_buffer_length, GFP_KERNEL);
 647                 if (!transfer_buffer)
 648                         return -ENOBUFS;
 649
 650                 result = usb_control_msg(port->serial->dev,
 651                           usb_rcvctrlpipe(port->serial->dev, 0),
 652                           SUSBCRequest_Misc,
 653                           USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
 654                           SUSBCR_MSC_ResetAllQueues,
 655                           0,
 656                           NULL, /* transfer_buffer, */
 657                           0,
 658                           KOBIL_TIMEOUT
 659                         );
 660
 661                 dbg("%s - port %d Send reset_all_queues (FLUSH) URB returns: %i", __func__, port->number, result);
 662                 kfree(transfer_buffer);
 663                 return (result < 0) ? -EIO: 0;
 664         default:
 665                 return -ENOIOCTLCMD;
 666         }
 667 }
 668
 669 module_usb_serial_driver(serial_drivers, id_table);
 670
 671 MODULE_AUTHOR(DRIVER_AUTHOR);
 672 MODULE_DESCRIPTION(DRIVER_DESC);
 673 MODULE_LICENSE("GPL");
 674
 675 module_param(debug, bool, S_IRUGO | S_IWUSR);
 676 MODULE_PARM_DESC(debug, "Debug enabled or not");