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PM / sleep: Asynchronous threads for suspend_noirq
[linux/fpc-iii.git] / drivers / usb / serial / kobil_sct.c
blob618c1c1f227e1c56783aea4f05aad0f31dde9bf1
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/slab.h>
29 #include <linux/tty.h>
30 #include <linux/tty_driver.h>
31 #include <linux/tty_flip.h>
32 #include <linux/module.h>
33 #include <linux/spinlock.h>
34 #include <linux/uaccess.h>
35 #include <linux/usb.h>
36 #include <linux/usb/serial.h>
37 #include <linux/ioctl.h>
38 #include "kobil_sct.h"
39
40 #define DRIVER_AUTHOR "KOBIL Systems GmbH - http://www.kobil.com"
41 #define DRIVER_DESC "KOBIL USB Smart Card Terminal Driver (experimental)"
42
43 #define KOBIL_VENDOR_ID 0x0D46
44 #define KOBIL_ADAPTER_B_PRODUCT_ID 0x2011
45 #define KOBIL_ADAPTER_K_PRODUCT_ID 0x2012
46 #define KOBIL_USBTWIN_PRODUCT_ID 0x0078
47 #define KOBIL_KAAN_SIM_PRODUCT_ID 0x0081
48
49 #define KOBIL_TIMEOUT 500
50 #define KOBIL_BUF_LENGTH 300
51
52
53 /* Function prototypes */
54 static int kobil_port_probe(struct usb_serial_port *probe);
55 static int kobil_port_remove(struct usb_serial_port *probe);
56 static int kobil_open(struct tty_struct *tty, struct usb_serial_port *port);
57 static void kobil_close(struct usb_serial_port *port);
58 static int kobil_write(struct tty_struct *tty, struct usb_serial_port *port,
59 const unsigned char *buf, int count);
60 static int kobil_write_room(struct tty_struct *tty);
61 static int kobil_ioctl(struct tty_struct *tty,
62 unsigned int cmd, unsigned long arg);
63 static int kobil_tiocmget(struct tty_struct *tty);
64 static int kobil_tiocmset(struct tty_struct *tty,
65 unsigned int set, unsigned int clear);
66 static void kobil_read_int_callback(struct urb *urb);
67 static void kobil_write_int_callback(struct urb *urb);
68 static void kobil_set_termios(struct tty_struct *tty,
69 struct usb_serial_port *port, struct ktermios *old);
70 static void kobil_init_termios(struct tty_struct *tty);
71
72 static const struct usb_device_id id_table[] = {
73 { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_B_PRODUCT_ID) },
74 { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_ADAPTER_K_PRODUCT_ID) },
75 { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_USBTWIN_PRODUCT_ID) },
76 { USB_DEVICE(KOBIL_VENDOR_ID, KOBIL_KAAN_SIM_PRODUCT_ID) },
77 { } /* Terminating entry */
78 };
79 MODULE_DEVICE_TABLE(usb, id_table);
80
81 static struct usb_serial_driver kobil_device = {
82 .driver = {
83 .owner = THIS_MODULE,
84 .name = "kobil",
85 },
86 .description = "KOBIL USB smart card terminal",
87 .id_table = id_table,
88 .num_ports = 1,
89 .port_probe = kobil_port_probe,
90 .port_remove = kobil_port_remove,
91 .ioctl = kobil_ioctl,
92 .set_termios = kobil_set_termios,
93 .init_termios = kobil_init_termios,
94 .tiocmget = kobil_tiocmget,
95 .tiocmset = kobil_tiocmset,
96 .open = kobil_open,
97 .close = kobil_close,
98 .write = kobil_write,
99 .write_room = kobil_write_room,
100 .read_int_callback = kobil_read_int_callback,
101 .write_int_callback = kobil_write_int_callback,
102 };
103
104 static struct usb_serial_driver * const serial_drivers[] = {
105 &kobil_device, NULL
106 };
107
108 struct kobil_private {
109 unsigned char buf[KOBIL_BUF_LENGTH]; /* buffer for the APDU to send */
110 int filled; /* index of the last char in buf */
111 int cur_pos; /* index of the next char to send in buf */
112 __u16 device_type;
113 };
114
115
116 static int kobil_port_probe(struct usb_serial_port *port)
117 {
118 struct usb_serial *serial = port->serial;
119 struct kobil_private *priv;
120
121 priv = kmalloc(sizeof(struct kobil_private), GFP_KERNEL);
122 if (!priv)
123 return -ENOMEM;
124
125 priv->filled = 0;
126 priv->cur_pos = 0;
127 priv->device_type = le16_to_cpu(serial->dev->descriptor.idProduct);
128
129 switch (priv->device_type) {
130 case KOBIL_ADAPTER_B_PRODUCT_ID:
131 dev_dbg(&serial->dev->dev, "KOBIL B1 PRO / KAAN PRO detected\n");
132 break;
133 case KOBIL_ADAPTER_K_PRODUCT_ID:
134 dev_dbg(&serial->dev->dev, "KOBIL KAAN Standard Plus / SecOVID Reader Plus detected\n");
135 break;
136 case KOBIL_USBTWIN_PRODUCT_ID:
137 dev_dbg(&serial->dev->dev, "KOBIL USBTWIN detected\n");
138 break;
139 case KOBIL_KAAN_SIM_PRODUCT_ID:
140 dev_dbg(&serial->dev->dev, "KOBIL KAAN SIM detected\n");
141 break;
142 }
143 usb_set_serial_port_data(port, priv);
144
145 return 0;
146 }
147
148
149 static int kobil_port_remove(struct usb_serial_port *port)
150 {
151 struct kobil_private *priv;
152
153 priv = usb_get_serial_port_data(port);
154 kfree(priv);
155
156 return 0;
157 }
158
159 static void kobil_init_termios(struct tty_struct *tty)
160 {
161 /* Default to echo off and other sane device settings */
162 tty->termios.c_lflag = 0;
163 tty->termios.c_iflag &= ~(ISIG | ICANON | ECHO | IEXTEN | XCASE);
164 tty->termios.c_iflag |= IGNBRK | IGNPAR | IXOFF;
165 /* do NOT translate CR to CR-NL (0x0A -> 0x0A 0x0D) */
166 tty->termios.c_oflag &= ~ONLCR;
167 }
168
169 static int kobil_open(struct tty_struct *tty, struct usb_serial_port *port)
170 {
171 struct device *dev = &port->dev;
172 int result = 0;
173 struct kobil_private *priv;
174 unsigned char *transfer_buffer;
175 int transfer_buffer_length = 8;
176
177 priv = usb_get_serial_port_data(port);
178
179 /* allocate memory for transfer buffer */
180 transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
181 if (!transfer_buffer)
182 return -ENOMEM;
183
184 /* get hardware version */
185 result = usb_control_msg(port->serial->dev,
186 usb_rcvctrlpipe(port->serial->dev, 0),
187 SUSBCRequest_GetMisc,
188 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
189 SUSBCR_MSC_GetHWVersion,
190 0,
191 transfer_buffer,
192 transfer_buffer_length,
193 KOBIL_TIMEOUT
194 );
195 dev_dbg(dev, "%s - Send get_HW_version URB returns: %i\n", __func__, result);
196 dev_dbg(dev, "Hardware version: %i.%i.%i\n", transfer_buffer[0],
197 transfer_buffer[1], transfer_buffer[2]);
198
199 /* get firmware version */
200 result = usb_control_msg(port->serial->dev,
201 usb_rcvctrlpipe(port->serial->dev, 0),
202 SUSBCRequest_GetMisc,
203 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
204 SUSBCR_MSC_GetFWVersion,
205 0,
206 transfer_buffer,
207 transfer_buffer_length,
208 KOBIL_TIMEOUT
209 );
210 dev_dbg(dev, "%s - Send get_FW_version URB returns: %i\n", __func__, result);
211 dev_dbg(dev, "Firmware version: %i.%i.%i\n", transfer_buffer[0],
212 transfer_buffer[1], transfer_buffer[2]);
213
214 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
215 priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
216 /* Setting Baudrate, Parity and Stopbits */
217 result = usb_control_msg(port->serial->dev,
218 usb_rcvctrlpipe(port->serial->dev, 0),
219 SUSBCRequest_SetBaudRateParityAndStopBits,
220 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
221 SUSBCR_SBR_9600 | SUSBCR_SPASB_EvenParity |
222 SUSBCR_SPASB_1StopBit,
223 0,
224 transfer_buffer,
225 0,
226 KOBIL_TIMEOUT
227 );
228 dev_dbg(dev, "%s - Send set_baudrate URB returns: %i\n", __func__, result);
229
230 /* reset all queues */
231 result = usb_control_msg(port->serial->dev,
232 usb_rcvctrlpipe(port->serial->dev, 0),
233 SUSBCRequest_Misc,
234 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
235 SUSBCR_MSC_ResetAllQueues,
236 0,
237 transfer_buffer,
238 0,
239 KOBIL_TIMEOUT
240 );
241 dev_dbg(dev, "%s - Send reset_all_queues URB returns: %i\n", __func__, result);
242 }
243 if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
244 priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
245 priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
246 /* start reading (Adapter B 'cause PNP string) */
247 result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
248 dev_dbg(dev, "%s - Send read URB returns: %i\n", __func__, result);
249 }
250
251 kfree(transfer_buffer);
252 return 0;
253 }
254
255
256 static void kobil_close(struct usb_serial_port *port)
257 {
258 /* FIXME: Add rts/dtr methods */
259 usb_kill_urb(port->interrupt_out_urb);
260 usb_kill_urb(port->interrupt_in_urb);
261 }
262
263
264 static void kobil_read_int_callback(struct urb *urb)
265 {
266 int result;
267 struct usb_serial_port *port = urb->context;
268 unsigned char *data = urb->transfer_buffer;
269 int status = urb->status;
270
271 if (status) {
272 dev_dbg(&port->dev, "%s - Read int status not zero: %d\n", __func__, status);
273 return;
274 }
275
276 if (urb->actual_length) {
277 usb_serial_debug_data(&port->dev, __func__, urb->actual_length,
278 data);
279 tty_insert_flip_string(&port->port, data, urb->actual_length);
280 tty_flip_buffer_push(&port->port);
281 }
282
283 result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC);
284 dev_dbg(&port->dev, "%s - Send read URB returns: %i\n", __func__, result);
285 }
286
287
288 static void kobil_write_int_callback(struct urb *urb)
289 {
290 }
291
292
293 static int kobil_write(struct tty_struct *tty, struct usb_serial_port *port,
294 const unsigned char *buf, int count)
295 {
296 int length = 0;
297 int result = 0;
298 int todo = 0;
299 struct kobil_private *priv;
300
301 if (count == 0) {
302 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__);
303 return 0;
304 }
305
306 priv = usb_get_serial_port_data(port);
307
308 if (count > (KOBIL_BUF_LENGTH - priv->filled)) {
309 dev_dbg(&port->dev, "%s - Error: write request bigger than buffer size\n", __func__);
310 return -ENOMEM;
311 }
312
313 /* Copy data to buffer */
314 memcpy(priv->buf + priv->filled, buf, count);
315 usb_serial_debug_data(&port->dev, __func__, count, priv->buf + priv->filled);
316 priv->filled = priv->filled + count;
317
318 /* only send complete block. TWIN, KAAN SIM and adapter K
319 use the same protocol. */
320 if (((priv->device_type != KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 2) && (priv->filled >= (priv->buf[1] + 3))) ||
321 ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) && (priv->filled > 3) && (priv->filled >= (priv->buf[2] + 4)))) {
322 /* stop reading (except TWIN and KAAN SIM) */
323 if ((priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID)
324 || (priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID))
325 usb_kill_urb(port->interrupt_in_urb);
326
327 todo = priv->filled - priv->cur_pos;
328
329 while (todo > 0) {
330 /* max 8 byte in one urb (endpoint size) */
331 length = min(todo, port->interrupt_out_size);
332 /* copy data to transfer buffer */
333 memcpy(port->interrupt_out_buffer,
334 priv->buf + priv->cur_pos, length);
335 port->interrupt_out_urb->transfer_buffer_length = length;
336
337 priv->cur_pos = priv->cur_pos + length;
338 result = usb_submit_urb(port->interrupt_out_urb, GFP_NOIO);
339 dev_dbg(&port->dev, "%s - Send write URB returns: %i\n", __func__, result);
340 todo = priv->filled - priv->cur_pos;
341
342 if (todo > 0)
343 msleep(24);
344 }
345
346 priv->filled = 0;
347 priv->cur_pos = 0;
348
349 /* start reading (except TWIN and KAAN SIM) */
350 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID ||
351 priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) {
352 result = usb_submit_urb(port->interrupt_in_urb,
353 GFP_NOIO);
354 dev_dbg(&port->dev, "%s - Send read URB returns: %i\n", __func__, result);
355 }
356 }
357 return count;
358 }
359
360
361 static int kobil_write_room(struct tty_struct *tty)
362 {
363 /* FIXME */
364 return 8;
365 }
366
367
368 static int kobil_tiocmget(struct tty_struct *tty)
369 {
370 struct usb_serial_port *port = tty->driver_data;
371 struct kobil_private *priv;
372 int result;
373 unsigned char *transfer_buffer;
374 int transfer_buffer_length = 8;
375
376 priv = usb_get_serial_port_data(port);
377 if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
378 || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
379 /* This device doesn't support ioctl calls */
380 return -EINVAL;
381 }
382
383 /* allocate memory for transfer buffer */
384 transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
385 if (!transfer_buffer)
386 return -ENOMEM;
387
388 result = usb_control_msg(port->serial->dev,
389 usb_rcvctrlpipe(port->serial->dev, 0),
390 SUSBCRequest_GetStatusLineState,
391 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_IN,
392 0,
393 0,
394 transfer_buffer,
395 transfer_buffer_length,
396 KOBIL_TIMEOUT);
397
398 dev_dbg(&port->dev, "%s - Send get_status_line_state URB returns: %i. Statusline: %02x\n",
399 __func__, result, transfer_buffer[0]);
400
401 result = 0;
402 if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0)
403 result = TIOCM_DSR;
404 kfree(transfer_buffer);
405 return result;
406 }
407
408 static int kobil_tiocmset(struct tty_struct *tty,
409 unsigned int set, unsigned int clear)
410 {
411 struct usb_serial_port *port = tty->driver_data;
412 struct device *dev = &port->dev;
413 struct kobil_private *priv;
414 int result;
415 int dtr = 0;
416 int rts = 0;
417 unsigned char *transfer_buffer;
418 int transfer_buffer_length = 8;
419
420 /* FIXME: locking ? */
421 priv = usb_get_serial_port_data(port);
422 if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID
423 || priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
424 /* This device doesn't support ioctl calls */
425 return -EINVAL;
426 }
427
428 /* allocate memory for transfer buffer */
429 transfer_buffer = kzalloc(transfer_buffer_length, GFP_KERNEL);
430 if (!transfer_buffer)
431 return -ENOMEM;
432
433 if (set & TIOCM_RTS)
434 rts = 1;
435 if (set & TIOCM_DTR)
436 dtr = 1;
437 if (clear & TIOCM_RTS)
438 rts = 0;
439 if (clear & TIOCM_DTR)
440 dtr = 0;
441
442 if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID) {
443 if (dtr != 0)
444 dev_dbg(dev, "%s - Setting DTR\n", __func__);
445 else
446 dev_dbg(dev, "%s - Clearing DTR\n", __func__);
447 result = usb_control_msg(port->serial->dev,
448 usb_rcvctrlpipe(port->serial->dev, 0),
449 SUSBCRequest_SetStatusLinesOrQueues,
450 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
451 ((dtr != 0) ? SUSBCR_SSL_SETDTR : SUSBCR_SSL_CLRDTR),
452 0,
453 transfer_buffer,
454 0,
455 KOBIL_TIMEOUT);
456 } else {
457 if (rts != 0)
458 dev_dbg(dev, "%s - Setting RTS\n", __func__);
459 else
460 dev_dbg(dev, "%s - Clearing RTS\n", __func__);
461 result = usb_control_msg(port->serial->dev,
462 usb_rcvctrlpipe(port->serial->dev, 0),
463 SUSBCRequest_SetStatusLinesOrQueues,
464 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
465 ((rts != 0) ? SUSBCR_SSL_SETRTS : SUSBCR_SSL_CLRRTS),
466 0,
467 transfer_buffer,
468 0,
469 KOBIL_TIMEOUT);
470 }
471 dev_dbg(dev, "%s - Send set_status_line URB returns: %i\n", __func__, result);
472 kfree(transfer_buffer);
473 return (result < 0) ? result : 0;
474 }
475
476 static void kobil_set_termios(struct tty_struct *tty,
477 struct usb_serial_port *port, struct ktermios *old)
478 {
479 struct kobil_private *priv;
480 int result;
481 unsigned short urb_val = 0;
482 int c_cflag = tty->termios.c_cflag;
483 speed_t speed;
484
485 priv = usb_get_serial_port_data(port);
486 if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
487 priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID) {
488 /* This device doesn't support ioctl calls */
489 tty_termios_copy_hw(&tty->termios, old);
490 return;
491 }
492
493 speed = tty_get_baud_rate(tty);
494 switch (speed) {
495 case 1200:
496 urb_val = SUSBCR_SBR_1200;
497 break;
498 default:
499 speed = 9600;
500 case 9600:
501 urb_val = SUSBCR_SBR_9600;
502 break;
503 }
504 urb_val |= (c_cflag & CSTOPB) ? SUSBCR_SPASB_2StopBits :
505 SUSBCR_SPASB_1StopBit;
506 if (c_cflag & PARENB) {
507 if (c_cflag & PARODD)
508 urb_val |= SUSBCR_SPASB_OddParity;
509 else
510 urb_val |= SUSBCR_SPASB_EvenParity;
511 } else
512 urb_val |= SUSBCR_SPASB_NoParity;
513 tty->termios.c_cflag &= ~CMSPAR;
514 tty_encode_baud_rate(tty, speed, speed);
515
516 result = usb_control_msg(port->serial->dev,
517 usb_rcvctrlpipe(port->serial->dev, 0),
518 SUSBCRequest_SetBaudRateParityAndStopBits,
519 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
520 urb_val,
521 0,
522 NULL,
523 0,
524 KOBIL_TIMEOUT
525 );
526 }
527
528 static int kobil_ioctl(struct tty_struct *tty,
529 unsigned int cmd, unsigned long arg)
530 {
531 struct usb_serial_port *port = tty->driver_data;
532 struct kobil_private *priv = usb_get_serial_port_data(port);
533 unsigned char *transfer_buffer;
534 int transfer_buffer_length = 8;
535 int result;
536
537 if (priv->device_type == KOBIL_USBTWIN_PRODUCT_ID ||
538 priv->device_type == KOBIL_KAAN_SIM_PRODUCT_ID)
539 /* This device doesn't support ioctl calls */
540 return -ENOIOCTLCMD;
541
542 switch (cmd) {
543 case TCFLSH:
544 transfer_buffer = kmalloc(transfer_buffer_length, GFP_KERNEL);
545 if (!transfer_buffer)
546 return -ENOBUFS;
547
548 result = usb_control_msg(port->serial->dev,
549 usb_rcvctrlpipe(port->serial->dev, 0),
550 SUSBCRequest_Misc,
551 USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT,
552 SUSBCR_MSC_ResetAllQueues,
553 0,
554 NULL, /* transfer_buffer, */
555 0,
556 KOBIL_TIMEOUT
557 );
558
559 dev_dbg(&port->dev,
560 "%s - Send reset_all_queues (FLUSH) URB returns: %i", __func__, result);
561 kfree(transfer_buffer);
562 return (result < 0) ? -EIO: 0;
563 default:
564 return -ENOIOCTLCMD;
565 }
566 }
567
568 module_usb_serial_driver(serial_drivers, id_table);
569
570 MODULE_AUTHOR(DRIVER_AUTHOR);
571 MODULE_DESCRIPTION(DRIVER_DESC);
572 MODULE_LICENSE("GPL");
Linux with added FPC-III support