projects / deliverable / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
[PATCH] TTY layer buffering revamp
[deliverable/linux.git] / drivers / usb / serial / kobil_sct.c
CommitLineData
1da177e4
LT		 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
54static 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 */
72static int kobil_startup (struct usb_serial *serial);
73static void kobil_shutdown (struct usb_serial *serial);
74static int kobil_open (struct usb_serial_port *port, struct file *filp);
75static void kobil_close (struct usb_serial_port *port, struct file *filp);
76static int kobil_write (struct usb_serial_port *port,
77 const unsigned char *buf, int count);
78static int kobil_write_room(struct usb_serial_port *port);
79static int kobil_ioctl(struct usb_serial_port *port, struct file *file,
80 unsigned int cmd, unsigned long arg);
81static int kobil_tiocmget(struct usb_serial_port *port, struct file *file);
82static int kobil_tiocmset(struct usb_serial_port *port, struct file *file,
83 unsigned int set, unsigned int clear);
84static void kobil_read_int_callback( struct urb *urb, struct pt_regs *regs );
85static void kobil_write_callback( struct urb *purb, struct pt_regs *regs );
86
87
88static 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
97MODULE_DEVICE_TABLE (usb, id_table);
98
99static struct usb_driver kobil_driver = {
1da177e4
LT		 100 .name = "kobil",
101 .probe = usb_serial_probe,
102 .disconnect = usb_serial_disconnect,
103 .id_table = id_table,
ba9dc657 104 .no_dynamic_id = 1,
1da177e4
LT		 105};
106
107
ea65370d 108static struct usb_serial_driver kobil_device = {
18fcac35
GKH		 109 .driver = {
110 .owner = THIS_MODULE,
269bda1c 111 .name = "kobil",
18fcac35 112 },
269bda1c 113 .description = "KOBIL USB smart card terminal",
1da177e4
LT		 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
132struct 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 termios internal_termios;
141};
142
143
144static 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 (((endpoint->desc.bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) &&
190 ((endpoint->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)) {
191 dbg("%s Found interrupt out endpoint. Address: %d", __FUNCTION__, endpoint->desc.bEndpointAddress);
192 priv->write_int_endpoint_address = endpoint->desc.bEndpointAddress;
193 }
194 if (((endpoint->desc.bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) &&
195 ((endpoint->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)) {
196 dbg("%s Found interrupt in endpoint. Address: %d", __FUNCTION__, endpoint->desc.bEndpointAddress);
197 priv->read_int_endpoint_address = endpoint->desc.bEndpointAddress;
198 }
199 }
200 return 0;
201}
202
203
204static void kobil_shutdown (struct usb_serial *serial)
205{
206 int i;
207 dbg("%s - port %d", __FUNCTION__, serial->port[0]->number);
208
209 for (i=0; i < serial->num_ports; ++i) {
210 while (serial->port[i]->open_count > 0) {
211 kobil_close (serial->port[i], NULL);
212 }
213 kfree(usb_get_serial_port_data(serial->port[i]));
214 usb_set_serial_port_data(serial->port[i], NULL);
215 }
216}
217
218
219static int kobil_open (struct usb_serial_port *port, struct file *filp)
220{
221 int i, result = 0;
222 struct kobil_private *priv;
223 unsigned char *transfer_buffer;
224 int transfer_buffer_length = 8;
225 int write_urb_transfer_buffer_length = 8;
226
227 dbg("%s - port %d", __FUNCTION__, port->number);
228 priv = usb_get_serial_port_data(port);
229 priv->line_state = 0;
230
231 // someone sets the dev to 0 if the close method has been called
232 port->interrupt_in_urb->dev = port->serial->dev;
233
234
235 /* force low_latency on so that our tty_push actually forces
236 * the data through, otherwise it is scheduled, and with high
237 * data rates (like with OHCI) data can get lost.
238 */
239 port->tty->low_latency = 1;
240
241 // without this, every push_tty_char is echoed :-(
242 port->tty->termios->c_lflag = 0;
243 port->tty->termios->c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN | XCASE);
244 port->tty->termios->c_iflag = IGNBRK | IGNPAR | IXOFF;
245 port->tty->termios->c_oflag &= ~ONLCR; // do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D)
246
247 // set up internal termios structure
248 priv->internal_termios.c_iflag = port->tty->termios->c_iflag;
249 priv->internal_termios.c_oflag = port->tty->termios->c_oflag;
250 priv->internal_termios.c_cflag = port->tty->termios->c_cflag;
251 priv->internal_termios.c_lflag = port->tty->termios->c_lflag;
252
253 for (i=0; i<NCCS; i++) {
254 priv->internal_termios.c_cc[i] = port->tty->termios->c_cc[i];
255 }
256
257 // allocate memory for transfer buffer
258 transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);
259 if (! transfer_buffer) {
260 return -ENOMEM;
261 } else {
262 memset(transfer_buffer, 0, transfer_buffer_length);
263 }
264
265 // allocate write_urb
266 if (!port->write_urb) {
267 dbg("%s - port %d Allocating port->write_urb", __FUNCTION__, port->number);
268 port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
269 if (!port->write_urb) {
270 dbg("%s - port %d usb_alloc_urb failed", __FUNCTION__, port->number);
271 kfree(transfer_buffer);
272 return -ENOMEM;
273 }
274 }
275
276 // allocate memory for write_urb transfer buffer
277 port->write_urb->transfer_buffer = (unsigned char *) kmalloc(write_urb_transfer_buffer_length, GFP_KERNEL);
278 if (! port->write_urb->transfer_buffer) {
279 kfree(transfer_buffer);
280 usb_free_urb(port->write_urb);
281 port->write_urb = NULL;
282 return -ENOMEM;
283 }
284
285 // get hardware version
286 result = usb_control_msg( port->serial->dev,
287 usb_rcvctrlpipe(port->serial->dev, 0 ),
288 SUSBCRequest_GetMisc,
289 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
290 SUSBCR_MSC_GetHWVersion,
291 0,
292 transfer_buffer,
293 transfer_buffer_length,
294 KOBIL_TIMEOUT
295 );
296 dbg("%s - port %d Send get_HW_version URB returns: %i", __FUNCTION__, port->number, result);
297 dbg("Harware version: %i.%i.%i", transfer_buffer[0], transfer_buffer[1], transfer_buffer[2] );
298
299 // get firmware version
300 result = usb_control_msg( port->serial->dev,
301 usb_rcvctrlpipe(port->serial->dev, 0 ),
302 SUSBCRequest_GetMisc,
303 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
304 SUSBCR_MSC_GetFWVersion,
305 0,
306 transfer_buffer,
307 transfer_buffer_length,
308 KOBIL_TIMEOUT
309 );
310 dbg("%s - port %d Send get_FW_version URB returns: %i", __FUNCTION__, port->number, result);
311 dbg("Firmware version: %i.%i.%i", transfer_buffer[0], transfer_buffer[1], transfer_buffer[2] );
312
313 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
314 // Setting Baudrate, Parity and Stopbits
315 result = usb_control_msg( port->serial->dev,
316 usb_rcvctrlpipe(port->serial->dev, 0 ),
317 SUSBCRequest_SetBaudRateParityAndStopBits,
318 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
319 SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity | SUSBCR_SPASB_1StopBit,
320 0,
321 transfer_buffer,
322 0,
323 KOBIL_TIMEOUT
324 );
325 dbg("%s - port %d Send set_baudrate URB returns: %i", __FUNCTION__, port->number, result);
326
327 // reset all queues
328 result = usb_control_msg( port->serial->dev,
329 usb_rcvctrlpipe(port->serial->dev, 0 ),
330 SUSBCRequest_Misc,
331 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
332 SUSBCR_MSC_ResetAllQueues,
333 0,
334 transfer_buffer,
335 0,
336 KOBIL_TIMEOUT
337 );
338 dbg("%s - port %d Send reset_all_queues URB returns: %i", __FUNCTION__, port->number, result);
339 }
340 if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
341 priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
342 // start reading (Adapter B 'cause PNP string)
343 result = usb_submit_urb( port->interrupt_in_urb, GFP_ATOMIC );
344 dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
345 }
346
347 kfree(transfer_buffer);
348 return 0;
349}
350
351
352static void kobil_close (struct usb_serial_port *port, struct file *filp)
353{
354 dbg("%s - port %d", __FUNCTION__, port->number);
355
356 if (port->write_urb) {
357 usb_kill_urb(port->write_urb);
358 usb_free_urb( port->write_urb );
359 port->write_urb = NULL;
360 }
361 if (port->interrupt_in_urb)
362 usb_kill_urb(port->interrupt_in_urb);
363}
364
365
366static void kobil_read_int_callback( struct urb *purb, struct pt_regs *regs)
367{
1da177e4
LT		 368 int result;
369 struct usb_serial_port *port = (struct usb_serial_port *) purb->context;
370 struct tty_struct *tty;
371 unsigned char *data = purb->transfer_buffer;
372// char *dbg_data;
373
374 dbg("%s - port %d", __FUNCTION__, port->number);
375
376 if (purb->status) {
377 dbg("%s - port %d Read int status not zero: %d", __FUNCTION__, port->number, purb->status);
378 return;
379 }
380
381 tty = port->tty;
382 if (purb->actual_length) {
383
384 // BEGIN DEBUG
385 /*
386 dbg_data = (unsigned char *) kmalloc((3 * purb->actual_length + 10) * sizeof(char), GFP_KERNEL);
387 if (! dbg_data) {
388 return;
389 }
390 memset(dbg_data, 0, (3 * purb->actual_length + 10));
391 for (i = 0; i < purb->actual_length; i++) {
392 sprintf(dbg_data +3*i, "%02X ", data[i]);
393 }
394 dbg(" <-- %s", dbg_data );
395 kfree(dbg_data);
396 */
397 // END DEBUG
398
33f0f88f
AC		 399 tty_buffer_request_room(tty, purb->actual_length);
400 tty_insert_flip_string(tty, data, purb->actual_length);
1da177e4
LT		 401 tty_flip_buffer_push(tty);
402 }
403
404 // someone sets the dev to 0 if the close method has been called
405 port->interrupt_in_urb->dev = port->serial->dev;
406
407 result = usb_submit_urb( port->interrupt_in_urb, GFP_ATOMIC );
408 dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
409}
410
411
412static void kobil_write_callback( struct urb *purb, struct pt_regs *regs )
413{
414}
415
416
417static int kobil_write (struct usb_serial_port *port,
418 const unsigned char *buf, int count)
419{
420 int length = 0;
421 int result = 0;
422 int todo = 0;
423 struct kobil_private * priv;
424
425 if (count == 0) {
426 dbg("%s - port %d write request of 0 bytes", __FUNCTION__, port->number);
427 return 0;
428 }
429
430 priv = usb_get_serial_port_data(port);
431
432 if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
433 dbg("%s - port %d Error: write request bigger than buffer size", __FUNCTION__, port->number);
434 return -ENOMEM;
435 }
436
437 // Copy data to buffer
438 memcpy (priv->buf + priv->filled, buf, count);
439
440 usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, priv->buf + priv->filled);
441
442 priv->filled = priv->filled + count;
443
444
445 // only send complete block. TWIN, KAAN SIM and adapter K use the same protocol.
446 if ( ((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) ||
447 ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4))) ) {
448
449 // stop reading (except TWIN and KAAN SIM)
450 if ( (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) )
451 usb_kill_urb(port->interrupt_in_urb);
452
453 todo = priv->filled - priv->cur_pos;
454
455 while(todo > 0) {
456 // max 8 byte in one urb (endpoint size)
457 length = (todo < 8) ? todo : 8;
458 // copy data to transfer buffer
459 memcpy(port->write_urb->transfer_buffer, priv->buf + priv->cur_pos, length );
460 usb_fill_int_urb( port->write_urb,
461 port->serial->dev,
462 usb_sndintpipe(port->serial->dev, priv->write_int_endpoint_address),
463 port->write_urb->transfer_buffer,
464 length,
465 kobil_write_callback,
466 port,
467 8
468 );
469
470 priv->cur_pos = priv->cur_pos + length;
471 result = usb_submit_urb( port->write_urb, GFP_NOIO );
472 dbg("%s - port %d Send write URB returns: %i", __FUNCTION__, port->number, result);
473 todo = priv->filled - priv->cur_pos;
474
475 if (todo > 0) {
476 msleep(24);
477 }
478
479 } // end while
480
481 priv->filled = 0;
482 priv->cur_pos = 0;
483
484 // someone sets the dev to 0 if the close method has been called
485 port->interrupt_in_urb->dev = port->serial->dev;
486
487 // start reading (except TWIN and KAAN SIM)
488 if ( (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) ) {
489 // someone sets the dev to 0 if the close method has been called
490 port->interrupt_in_urb->dev = port->serial->dev;
491
492 result = usb_submit_urb( port->interrupt_in_urb, GFP_NOIO );
493 dbg("%s - port %d Send read URB returns: %i", __FUNCTION__, port->number, result);
494 }
495 }
496 return count;
497}
498
499
500static int kobil_write_room (struct usb_serial_port *port)
501{
502 //dbg("%s - port %d", __FUNCTION__, port->number);
503 return 8;
504}
505
506
507static int kobil_tiocmget(struct usb_serial_port *port, struct file *file)
508{
509 struct kobil_private * priv;
510 int result;
511 unsigned char *transfer_buffer;
512 int transfer_buffer_length = 8;
513
514 priv = usb_get_serial_port_data(port);
515 if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
516 // This device doesn't support ioctl calls
517 return -EINVAL;
518 }
519
520 // allocate memory for transfer buffer
521 transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);
522 if (!transfer_buffer) {
523 return -ENOMEM;
524 }
525 memset(transfer_buffer, 0, transfer_buffer_length);
526
527 result = usb_control_msg( port->serial->dev,
528 usb_rcvctrlpipe(port->serial->dev, 0 ),
529 SUSBCRequest_GetStatusLineState,
530 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
531 0,
532 0,
533 transfer_buffer,
534 transfer_buffer_length,
535 KOBIL_TIMEOUT);
536
537 dbg("%s - port %d Send get_status_line_state URB returns: %i. Statusline: %02x",
538 __FUNCTION__, port->number, result, transfer_buffer[0]);
539
540 if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0) {
541 priv->line_state |= TIOCM_DSR;
542 } else {
543 priv->line_state &= ~TIOCM_DSR;
544 }
545
546 kfree(transfer_buffer);
547 return priv->line_state;
548}
549
550static int kobil_tiocmset(struct usb_serial_port *port, struct file *file,
551 unsigned int set, unsigned int clear)
552{
553 struct kobil_private * priv;
554 int result;
555 int dtr = 0;
556 int rts = 0;
557 unsigned char *transfer_buffer;
558 int transfer_buffer_length = 8;
559
560 priv = usb_get_serial_port_data(port);
561 if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
562 // This device doesn't support ioctl calls
563 return -EINVAL;
564 }
565
566 // allocate memory for transfer buffer
567 transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);
568 if (! transfer_buffer) {
569 return -ENOMEM;
570 }
571 memset(transfer_buffer, 0, transfer_buffer_length);
572
573 if (set & TIOCM_RTS)
574 rts = 1;
575 if (set & TIOCM_DTR)
576 dtr = 1;
577 if (clear & TIOCM_RTS)
578 rts = 0;
579 if (clear & TIOCM_DTR)
580 dtr = 0;
581
582 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
583 if (dtr != 0)
584 dbg("%s - port %d Setting DTR", __FUNCTION__, port->number);
585 else
586 dbg("%s - port %d Clearing DTR", __FUNCTION__, port->number);
587 result = usb_control_msg( port->serial->dev,
588 usb_rcvctrlpipe(port->serial->dev, 0 ),
589 SUSBCRequest_SetStatusLinesOrQueues,
590 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
591 ((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
592 0,
593 transfer_buffer,
594 0,
595 KOBIL_TIMEOUT);
596 } else {
597 if (rts != 0)
598 dbg("%s - port %d Setting RTS", __FUNCTION__, port->number);
599 else
600 dbg("%s - port %d Clearing RTS", __FUNCTION__, port->number);
601 result = usb_control_msg( port->serial->dev,
602 usb_rcvctrlpipe(port->serial->dev, 0 ),
603 SUSBCRequest_SetStatusLinesOrQueues,
604 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
605 ((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
606 0,
607 transfer_buffer,
608 0,
609 KOBIL_TIMEOUT);
610 }
611 dbg("%s - port %d Send set_status_line URB returns: %i", __FUNCTION__, port->number, result);
612 kfree(transfer_buffer);
613 return (result < 0) ? result : 0;
614}
615
616
617static int kobil_ioctl(struct usb_serial_port *port, struct file *file,
618 unsigned int cmd, unsigned long arg)
619{
620 struct kobil_private * priv;
621 int result;
622 unsigned short urb_val = 0;
623 unsigned char *transfer_buffer;
624 int transfer_buffer_length = 8;
625 char *settings;
626 void __user *user_arg = (void __user *)arg;
627
628 priv = usb_get_serial_port_data(port);
629 if ((priv->device_type == KOBIL_USBTWIN_PRODUCT_ID) || (priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)) {
630 // This device doesn't support ioctl calls
631 return 0;
632 }
633
634 switch (cmd) {
635 case TCGETS: // 0x5401
636 if (!access_ok(VERIFY_WRITE, user_arg, sizeof(struct termios))) {
637 dbg("%s - port %d Error in access_ok", __FUNCTION__, port->number);
638 return -EFAULT;
639 }
640 if (kernel_termios_to_user_termios((struct termios __user *)arg,
641 &priv->internal_termios))
642 return -EFAULT;
643 return 0;
644
645 case TCSETS: // 0x5402
646 if (!(port->tty->termios)) {
647 dbg("%s - port %d Error: port->tty->termios is NULL", __FUNCTION__, port->number);
648 return -ENOTTY;
649 }
650 if (!access_ok(VERIFY_READ, user_arg, sizeof(struct termios))) {
651 dbg("%s - port %d Error in access_ok", __FUNCTION__, port->number);
652 return -EFAULT;
653 }
654 if (user_termios_to_kernel_termios(&priv->internal_termios,
655 (struct termios __user *)arg))
656 return -EFAULT;
657
658 settings = (unsigned char *) kmalloc(50, GFP_KERNEL);
659 if (! settings) {
660 return -ENOBUFS;
661 }
662 memset(settings, 0, 50);
663
664 switch (priv->internal_termios.c_cflag & CBAUD) {
665 case B1200:
666 urb_val = SUSBCR_SBR_1200;
667 strcat(settings, "1200 ");
668 break;
669 case B9600:
670 default:
671 urb_val = SUSBCR_SBR_9600;
672 strcat(settings, "9600 ");
673 break;
674 }
675
676 urb_val |= (priv->internal_termios.c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits : SUSBCR_SPASB_1StopBit;
677 strcat(settings, (priv->internal_termios.c_cflag & CSTOPB) ? "2 StopBits " : "1 StopBit ");
678
679 if (priv->internal_termios.c_cflag & PARENB) {
680 if (priv->internal_termios.c_cflag & PARODD) {
681 urb_val |= SUSBCR_SPASB_OddParity;
682 strcat(settings, "Odd Parity");
683 } else {
684 urb_val |= SUSBCR_SPASB_EvenParity;
685 strcat(settings, "Even Parity");
686 }
687 } else {
688 urb_val |= SUSBCR_SPASB_NoParity;
689 strcat(settings, "No Parity");
690 }
691 dbg("%s - port %d setting port to: %s", __FUNCTION__, port->number, settings );
692
693 result = usb_control_msg( port->serial->dev,
694 usb_rcvctrlpipe(port->serial->dev, 0 ),
695 SUSBCRequest_SetBaudRateParityAndStopBits,
696 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
697 urb_val,
698 0,
699 settings,
700 0,
701 KOBIL_TIMEOUT
702 );
703
704 dbg("%s - port %d Send set_baudrate URB returns: %i", __FUNCTION__, port->number, result);
705 kfree(settings);
706 return 0;
707
708 case TCFLSH: // 0x540B
709 transfer_buffer = (unsigned char *) kmalloc(transfer_buffer_length, GFP_KERNEL);
710 if (! transfer_buffer) {
711 return -ENOBUFS;
712 }
713
714 result = usb_control_msg( port->serial->dev,
715 usb_rcvctrlpipe(port->serial->dev, 0 ),
716 SUSBCRequest_Misc,
717 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
718 SUSBCR_MSC_ResetAllQueues,
719 0,
720 NULL,//transfer_buffer,
721 0,
722 KOBIL_TIMEOUT
723 );
724
725 dbg("%s - port %d Send reset_all_queues (FLUSH) URB returns: %i", __FUNCTION__, port->number, result);
726
727 kfree(transfer_buffer);
728 return ((result < 0) ? -EFAULT : 0);
729
730 }
731 return -ENOIOCTLCMD;
732}
733
734
735static int __init kobil_init (void)
736{
737 int retval;
738 retval = usb_serial_register(&kobil_device);
739 if (retval)
740 goto failed_usb_serial_register;
741 retval = usb_register(&kobil_driver);
742 if (retval)
743 goto failed_usb_register;
744
745 info(DRIVER_VERSION " " DRIVER_AUTHOR);
746 info(DRIVER_DESC);
747
748 return 0;
749failed_usb_register:
750 usb_serial_deregister(&kobil_device);
751failed_usb_serial_register:
752 return retval;
753}
754
755
756static void __exit kobil_exit (void)
757{
758 usb_deregister (&kobil_driver);
759 usb_serial_deregister (&kobil_device);
760}
761
762module_init(kobil_init);
763module_exit(kobil_exit);
764
765MODULE_AUTHOR( DRIVER_AUTHOR );
766MODULE_DESCRIPTION( DRIVER_DESC );
767MODULE_LICENSE( "GPL" );
768
769module_param(debug, bool, S_IRUGO | S_IWUSR);
770MODULE_PARM_DESC(debug, "Debug enabled or not");
Linux kernel - Deliverables
This page took 0.122424 seconds and 5 git commands to generate.