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