blob: 8dd48a2be911db2626dd972c44fa2421c609ba8b [file] [log] [blame]
Harald Welte77c44ab2005-11-13 16:06:26 -08001/*
2 * A driver for the Omnikey PCMCIA smartcard reader CardMan 4040
3 *
4 * (c) 2000-2004 Omnikey AG (http://www.omnikey.com/)
5 *
Harald Welte67bc6202006-02-14 09:21:26 +01006 * (C) 2005-2006 Harald Welte <laforge@gnumonks.org>
Harald Welte77c44ab2005-11-13 16:06:26 -08007 * - add support for poll()
8 * - driver cleanup
9 * - add waitqueues
10 * - adhere to linux kernel coding style and policies
11 * - support 2.6.13 "new style" pcmcia interface
Harald Welte67bc6202006-02-14 09:21:26 +010012 * - add class interface for udev device creation
Harald Welte77c44ab2005-11-13 16:06:26 -080013 *
14 * The device basically is a USB CCID compliant device that has been
15 * attached to an I/O-Mapped FIFO.
16 *
17 * All rights reserved, Dual BSD/GPL Licensed.
18 */
19
Harald Welte77c44ab2005-11-13 16:06:26 -080020#include <linux/kernel.h>
21#include <linux/module.h>
22#include <linux/slab.h>
23#include <linux/init.h>
24#include <linux/fs.h>
25#include <linux/delay.h>
26#include <linux/poll.h>
Arnd Bergmann613655f2010-06-02 14:28:52 +020027#include <linux/mutex.h>
Harald Welte77c44ab2005-11-13 16:06:26 -080028#include <linux/wait.h>
29#include <asm/uaccess.h>
30#include <asm/io.h>
31
Harald Welte77c44ab2005-11-13 16:06:26 -080032#include <pcmcia/cistpl.h>
33#include <pcmcia/cisreg.h>
34#include <pcmcia/ciscode.h>
35#include <pcmcia/ds.h>
36
37#include "cm4040_cs.h"
38
39
Dominik Brodowskidd2e5a12009-11-03 10:27:34 +010040#define reader_to_dev(x) (&x->p_dev->dev)
Dominik Brodowskicbf624f2009-10-24 15:47:29 +020041
42/* n (debug level) is ignored */
43/* additional debug output may be enabled by re-compiling with
44 * CM4040_DEBUG set */
45/* #define CM4040_DEBUG */
46#define DEBUGP(n, rdr, x, args...) do { \
47 dev_dbg(reader_to_dev(rdr), "%s:" x, \
48 __func__ , ## args); \
Harald Welte77c44ab2005-11-13 16:06:26 -080049 } while (0)
Harald Welte77c44ab2005-11-13 16:06:26 -080050
Arnd Bergmann613655f2010-06-02 14:28:52 +020051static DEFINE_MUTEX(cm4040_mutex);
Harald Welte77c44ab2005-11-13 16:06:26 -080052
53#define CCID_DRIVER_BULK_DEFAULT_TIMEOUT (150*HZ)
54#define CCID_DRIVER_ASYNC_POWERUP_TIMEOUT (35*HZ)
55#define CCID_DRIVER_MINIMUM_TIMEOUT (3*HZ)
56#define READ_WRITE_BUFFER_SIZE 512
57#define POLL_LOOP_COUNT 1000
58
59/* how often to poll for fifo status change */
60#define POLL_PERIOD msecs_to_jiffies(10)
61
Dominik Brodowskifba395e2006-03-31 17:21:06 +020062static void reader_release(struct pcmcia_device *link);
Harald Welte77c44ab2005-11-13 16:06:26 -080063
64static int major;
Harald Welte67bc6202006-02-14 09:21:26 +010065static struct class *cmx_class;
Harald Welte77c44ab2005-11-13 16:06:26 -080066
67#define BS_READABLE 0x01
68#define BS_WRITABLE 0x02
69
70struct reader_dev {
Dominik Brodowskifd238232006-03-05 10:45:09 +010071 struct pcmcia_device *p_dev;
Harald Welte77c44ab2005-11-13 16:06:26 -080072 wait_queue_head_t devq;
73 wait_queue_head_t poll_wait;
74 wait_queue_head_t read_wait;
75 wait_queue_head_t write_wait;
76 unsigned long buffer_status;
77 unsigned long timeout;
78 unsigned char s_buf[READ_WRITE_BUFFER_SIZE];
79 unsigned char r_buf[READ_WRITE_BUFFER_SIZE];
80 struct timer_list poll_timer;
81};
82
Dominik Brodowskifba395e2006-03-31 17:21:06 +020083static struct pcmcia_device *dev_table[CM_MAX_DEV];
Harald Welte77c44ab2005-11-13 16:06:26 -080084
Dominik Brodowskicbf624f2009-10-24 15:47:29 +020085#ifndef CM4040_DEBUG
Harald Welte77c44ab2005-11-13 16:06:26 -080086#define xoutb outb
87#define xinb inb
88#else
89static inline void xoutb(unsigned char val, unsigned short port)
90{
Dominik Brodowskicbf624f2009-10-24 15:47:29 +020091 pr_debug("outb(val=%.2x,port=%.4x)\n", val, port);
Harald Welte77c44ab2005-11-13 16:06:26 -080092 outb(val, port);
93}
94
95static inline unsigned char xinb(unsigned short port)
96{
97 unsigned char val;
98
99 val = inb(port);
Dominik Brodowskicbf624f2009-10-24 15:47:29 +0200100 pr_debug("%.2x=inb(%.4x)\n", val, port);
Harald Welte77c44ab2005-11-13 16:06:26 -0800101 return val;
102}
103#endif
104
105/* poll the device fifo status register. not to be confused with
106 * the poll syscall. */
107static void cm4040_do_poll(unsigned long dummy)
108{
109 struct reader_dev *dev = (struct reader_dev *) dummy;
Dominik Brodowski9a017a92010-07-24 15:58:54 +0200110 unsigned int obs = xinb(dev->p_dev->resource[0]->start
Harald Welte77c44ab2005-11-13 16:06:26 -0800111 + REG_OFFSET_BUFFER_STATUS);
112
113 if ((obs & BSR_BULK_IN_FULL)) {
114 set_bit(BS_READABLE, &dev->buffer_status);
115 DEBUGP(4, dev, "waking up read_wait\n");
116 wake_up_interruptible(&dev->read_wait);
117 } else
118 clear_bit(BS_READABLE, &dev->buffer_status);
119
120 if (!(obs & BSR_BULK_OUT_FULL)) {
121 set_bit(BS_WRITABLE, &dev->buffer_status);
122 DEBUGP(4, dev, "waking up write_wait\n");
123 wake_up_interruptible(&dev->write_wait);
124 } else
125 clear_bit(BS_WRITABLE, &dev->buffer_status);
126
127 if (dev->buffer_status)
128 wake_up_interruptible(&dev->poll_wait);
129
130 mod_timer(&dev->poll_timer, jiffies + POLL_PERIOD);
131}
132
133static void cm4040_stop_poll(struct reader_dev *dev)
134{
135 del_timer_sync(&dev->poll_timer);
136}
137
138static int wait_for_bulk_out_ready(struct reader_dev *dev)
139{
140 int i, rc;
Dominik Brodowski9a017a92010-07-24 15:58:54 +0200141 int iobase = dev->p_dev->resource[0]->start;
Harald Welte77c44ab2005-11-13 16:06:26 -0800142
143 for (i = 0; i < POLL_LOOP_COUNT; i++) {
144 if ((xinb(iobase + REG_OFFSET_BUFFER_STATUS)
145 & BSR_BULK_OUT_FULL) == 0) {
146 DEBUGP(4, dev, "BulkOut empty (i=%d)\n", i);
147 return 1;
148 }
149 }
150
151 DEBUGP(4, dev, "wait_event_interruptible_timeout(timeout=%ld\n",
152 dev->timeout);
153 rc = wait_event_interruptible_timeout(dev->write_wait,
154 test_and_clear_bit(BS_WRITABLE,
155 &dev->buffer_status),
156 dev->timeout);
157
158 if (rc > 0)
159 DEBUGP(4, dev, "woke up: BulkOut empty\n");
160 else if (rc == 0)
161 DEBUGP(4, dev, "woke up: BulkOut full, returning 0 :(\n");
162 else if (rc < 0)
163 DEBUGP(4, dev, "woke up: signal arrived\n");
164
165 return rc;
166}
167
168/* Write to Sync Control Register */
169static int write_sync_reg(unsigned char val, struct reader_dev *dev)
170{
Dominik Brodowski9a017a92010-07-24 15:58:54 +0200171 int iobase = dev->p_dev->resource[0]->start;
Harald Welte77c44ab2005-11-13 16:06:26 -0800172 int rc;
173
174 rc = wait_for_bulk_out_ready(dev);
175 if (rc <= 0)
176 return rc;
177
178 xoutb(val, iobase + REG_OFFSET_SYNC_CONTROL);
179 rc = wait_for_bulk_out_ready(dev);
180 if (rc <= 0)
181 return rc;
182
183 return 1;
184}
185
186static int wait_for_bulk_in_ready(struct reader_dev *dev)
187{
188 int i, rc;
Dominik Brodowski9a017a92010-07-24 15:58:54 +0200189 int iobase = dev->p_dev->resource[0]->start;
Harald Welte77c44ab2005-11-13 16:06:26 -0800190
191 for (i = 0; i < POLL_LOOP_COUNT; i++) {
192 if ((xinb(iobase + REG_OFFSET_BUFFER_STATUS)
193 & BSR_BULK_IN_FULL) == BSR_BULK_IN_FULL) {
194 DEBUGP(3, dev, "BulkIn full (i=%d)\n", i);
195 return 1;
196 }
197 }
198
199 DEBUGP(4, dev, "wait_event_interruptible_timeout(timeout=%ld\n",
200 dev->timeout);
201 rc = wait_event_interruptible_timeout(dev->read_wait,
202 test_and_clear_bit(BS_READABLE,
203 &dev->buffer_status),
204 dev->timeout);
205 if (rc > 0)
206 DEBUGP(4, dev, "woke up: BulkIn full\n");
207 else if (rc == 0)
208 DEBUGP(4, dev, "woke up: BulkIn not full, returning 0 :(\n");
209 else if (rc < 0)
210 DEBUGP(4, dev, "woke up: signal arrived\n");
211
212 return rc;
213}
214
215static ssize_t cm4040_read(struct file *filp, char __user *buf,
216 size_t count, loff_t *ppos)
217{
218 struct reader_dev *dev = filp->private_data;
Dominik Brodowski9a017a92010-07-24 15:58:54 +0200219 int iobase = dev->p_dev->resource[0]->start;
Harald Welte77c44ab2005-11-13 16:06:26 -0800220 size_t bytes_to_read;
221 unsigned long i;
222 size_t min_bytes_to_read;
223 int rc;
224 unsigned char uc;
225
226 DEBUGP(2, dev, "-> cm4040_read(%s,%d)\n", current->comm, current->pid);
227
228 if (count == 0)
229 return 0;
230
231 if (count < 10)
232 return -EFAULT;
233
234 if (filp->f_flags & O_NONBLOCK) {
235 DEBUGP(4, dev, "filep->f_flags O_NONBLOCK set\n");
236 DEBUGP(2, dev, "<- cm4040_read (failure)\n");
237 return -EAGAIN;
238 }
239
Dominik Brodowskie2d40962006-03-02 00:09:29 +0100240 if (!pcmcia_dev_present(dev->p_dev))
Harald Welte77c44ab2005-11-13 16:06:26 -0800241 return -ENODEV;
242
243 for (i = 0; i < 5; i++) {
244 rc = wait_for_bulk_in_ready(dev);
245 if (rc <= 0) {
246 DEBUGP(5, dev, "wait_for_bulk_in_ready rc=%.2x\n", rc);
247 DEBUGP(2, dev, "<- cm4040_read (failed)\n");
248 if (rc == -ERESTARTSYS)
249 return rc;
250 return -EIO;
251 }
252 dev->r_buf[i] = xinb(iobase + REG_OFFSET_BULK_IN);
Dominik Brodowskicbf624f2009-10-24 15:47:29 +0200253#ifdef CM4040_DEBUG
254 pr_debug("%lu:%2x ", i, dev->r_buf[i]);
Harald Welte77c44ab2005-11-13 16:06:26 -0800255 }
Dominik Brodowskicbf624f2009-10-24 15:47:29 +0200256 pr_debug("\n");
Harald Welte77c44ab2005-11-13 16:06:26 -0800257#else
258 }
259#endif
260
261 bytes_to_read = 5 + le32_to_cpu(*(__le32 *)&dev->r_buf[1]);
262
Randy Dunlape657ea12009-11-11 09:31:07 -0800263 DEBUGP(6, dev, "BytesToRead=%zu\n", bytes_to_read);
Harald Welte77c44ab2005-11-13 16:06:26 -0800264
265 min_bytes_to_read = min(count, bytes_to_read + 5);
Marcel Holtmann059819a2007-03-06 22:12:00 +0100266 min_bytes_to_read = min_t(size_t, min_bytes_to_read, READ_WRITE_BUFFER_SIZE);
Harald Welte77c44ab2005-11-13 16:06:26 -0800267
Randy Dunlape657ea12009-11-11 09:31:07 -0800268 DEBUGP(6, dev, "Min=%zu\n", min_bytes_to_read);
Harald Welte77c44ab2005-11-13 16:06:26 -0800269
270 for (i = 0; i < (min_bytes_to_read-5); i++) {
271 rc = wait_for_bulk_in_ready(dev);
272 if (rc <= 0) {
273 DEBUGP(5, dev, "wait_for_bulk_in_ready rc=%.2x\n", rc);
274 DEBUGP(2, dev, "<- cm4040_read (failed)\n");
275 if (rc == -ERESTARTSYS)
276 return rc;
277 return -EIO;
278 }
279 dev->r_buf[i+5] = xinb(iobase + REG_OFFSET_BULK_IN);
Dominik Brodowskicbf624f2009-10-24 15:47:29 +0200280#ifdef CM4040_DEBUG
281 pr_debug("%lu:%2x ", i, dev->r_buf[i]);
Harald Welte77c44ab2005-11-13 16:06:26 -0800282 }
Dominik Brodowskicbf624f2009-10-24 15:47:29 +0200283 pr_debug("\n");
Harald Welte77c44ab2005-11-13 16:06:26 -0800284#else
285 }
286#endif
287
288 *ppos = min_bytes_to_read;
289 if (copy_to_user(buf, dev->r_buf, min_bytes_to_read))
290 return -EFAULT;
291
292 rc = wait_for_bulk_in_ready(dev);
293 if (rc <= 0) {
294 DEBUGP(5, dev, "wait_for_bulk_in_ready rc=%.2x\n", rc);
295 DEBUGP(2, dev, "<- cm4040_read (failed)\n");
296 if (rc == -ERESTARTSYS)
297 return rc;
298 return -EIO;
299 }
300
301 rc = write_sync_reg(SCR_READER_TO_HOST_DONE, dev);
302 if (rc <= 0) {
303 DEBUGP(5, dev, "write_sync_reg c=%.2x\n", rc);
304 DEBUGP(2, dev, "<- cm4040_read (failed)\n");
305 if (rc == -ERESTARTSYS)
306 return rc;
307 else
308 return -EIO;
309 }
310
311 uc = xinb(iobase + REG_OFFSET_BULK_IN);
312
313 DEBUGP(2, dev, "<- cm4040_read (successfully)\n");
314 return min_bytes_to_read;
315}
316
317static ssize_t cm4040_write(struct file *filp, const char __user *buf,
318 size_t count, loff_t *ppos)
319{
320 struct reader_dev *dev = filp->private_data;
Dominik Brodowski9a017a92010-07-24 15:58:54 +0200321 int iobase = dev->p_dev->resource[0]->start;
Harald Welte77c44ab2005-11-13 16:06:26 -0800322 ssize_t rc;
323 int i;
324 unsigned int bytes_to_write;
325
326 DEBUGP(2, dev, "-> cm4040_write(%s,%d)\n", current->comm, current->pid);
327
328 if (count == 0) {
329 DEBUGP(2, dev, "<- cm4040_write empty read (successfully)\n");
330 return 0;
331 }
332
Marcel Holtmann059819a2007-03-06 22:12:00 +0100333 if ((count < 5) || (count > READ_WRITE_BUFFER_SIZE)) {
Harald Welte77c44ab2005-11-13 16:06:26 -0800334 DEBUGP(2, dev, "<- cm4040_write buffersize=%Zd < 5\n", count);
335 return -EIO;
336 }
337
338 if (filp->f_flags & O_NONBLOCK) {
339 DEBUGP(4, dev, "filep->f_flags O_NONBLOCK set\n");
340 DEBUGP(4, dev, "<- cm4040_write (failure)\n");
341 return -EAGAIN;
342 }
343
Dominik Brodowskie2d40962006-03-02 00:09:29 +0100344 if (!pcmcia_dev_present(dev->p_dev))
Harald Welte77c44ab2005-11-13 16:06:26 -0800345 return -ENODEV;
346
347 bytes_to_write = count;
348 if (copy_from_user(dev->s_buf, buf, bytes_to_write))
349 return -EFAULT;
350
351 switch (dev->s_buf[0]) {
352 case CMD_PC_TO_RDR_XFRBLOCK:
353 case CMD_PC_TO_RDR_SECURE:
354 case CMD_PC_TO_RDR_TEST_SECURE:
355 case CMD_PC_TO_RDR_OK_SECURE:
356 dev->timeout = CCID_DRIVER_BULK_DEFAULT_TIMEOUT;
357 break;
358
359 case CMD_PC_TO_RDR_ICCPOWERON:
360 dev->timeout = CCID_DRIVER_ASYNC_POWERUP_TIMEOUT;
361 break;
362
363 case CMD_PC_TO_RDR_GETSLOTSTATUS:
364 case CMD_PC_TO_RDR_ICCPOWEROFF:
365 case CMD_PC_TO_RDR_GETPARAMETERS:
366 case CMD_PC_TO_RDR_RESETPARAMETERS:
367 case CMD_PC_TO_RDR_SETPARAMETERS:
368 case CMD_PC_TO_RDR_ESCAPE:
369 case CMD_PC_TO_RDR_ICCCLOCK:
370 default:
371 dev->timeout = CCID_DRIVER_MINIMUM_TIMEOUT;
372 break;
373 }
374
375 rc = write_sync_reg(SCR_HOST_TO_READER_START, dev);
376 if (rc <= 0) {
377 DEBUGP(5, dev, "write_sync_reg c=%.2Zx\n", rc);
378 DEBUGP(2, dev, "<- cm4040_write (failed)\n");
379 if (rc == -ERESTARTSYS)
380 return rc;
381 else
382 return -EIO;
383 }
384
385 DEBUGP(4, dev, "start \n");
386
387 for (i = 0; i < bytes_to_write; i++) {
388 rc = wait_for_bulk_out_ready(dev);
389 if (rc <= 0) {
390 DEBUGP(5, dev, "wait_for_bulk_out_ready rc=%.2Zx\n",
391 rc);
392 DEBUGP(2, dev, "<- cm4040_write (failed)\n");
393 if (rc == -ERESTARTSYS)
394 return rc;
395 else
396 return -EIO;
397 }
398
399 xoutb(dev->s_buf[i],iobase + REG_OFFSET_BULK_OUT);
400 }
401 DEBUGP(4, dev, "end\n");
402
403 rc = write_sync_reg(SCR_HOST_TO_READER_DONE, dev);
404
405 if (rc <= 0) {
406 DEBUGP(5, dev, "write_sync_reg c=%.2Zx\n", rc);
407 DEBUGP(2, dev, "<- cm4040_write (failed)\n");
408 if (rc == -ERESTARTSYS)
409 return rc;
410 else
411 return -EIO;
412 }
413
414 DEBUGP(2, dev, "<- cm4040_write (successfully)\n");
415 return count;
416}
417
418static unsigned int cm4040_poll(struct file *filp, poll_table *wait)
419{
420 struct reader_dev *dev = filp->private_data;
421 unsigned int mask = 0;
422
423 poll_wait(filp, &dev->poll_wait, wait);
424
425 if (test_and_clear_bit(BS_READABLE, &dev->buffer_status))
426 mask |= POLLIN | POLLRDNORM;
427 if (test_and_clear_bit(BS_WRITABLE, &dev->buffer_status))
428 mask |= POLLOUT | POLLWRNORM;
429
430 DEBUGP(2, dev, "<- cm4040_poll(%u)\n", mask);
431
432 return mask;
433}
434
435static int cm4040_open(struct inode *inode, struct file *filp)
436{
437 struct reader_dev *dev;
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200438 struct pcmcia_device *link;
Harald Welte77c44ab2005-11-13 16:06:26 -0800439 int minor = iminor(inode);
Jonathan Corbet8b5332f2008-06-19 14:34:41 -0600440 int ret;
Harald Welte77c44ab2005-11-13 16:06:26 -0800441
442 if (minor >= CM_MAX_DEV)
443 return -ENODEV;
444
Arnd Bergmann613655f2010-06-02 14:28:52 +0200445 mutex_lock(&cm4040_mutex);
Harald Welte77c44ab2005-11-13 16:06:26 -0800446 link = dev_table[minor];
Jonathan Corbet8b5332f2008-06-19 14:34:41 -0600447 if (link == NULL || !pcmcia_dev_present(link)) {
448 ret = -ENODEV;
449 goto out;
450 }
Harald Welte77c44ab2005-11-13 16:06:26 -0800451
Jonathan Corbet8b5332f2008-06-19 14:34:41 -0600452 if (link->open) {
453 ret = -EBUSY;
454 goto out;
455 }
Harald Welte77c44ab2005-11-13 16:06:26 -0800456
457 dev = link->priv;
458 filp->private_data = dev;
459
460 if (filp->f_flags & O_NONBLOCK) {
461 DEBUGP(4, dev, "filep->f_flags O_NONBLOCK set\n");
Jonathan Corbet8b5332f2008-06-19 14:34:41 -0600462 ret = -EAGAIN;
463 goto out;
Harald Welte77c44ab2005-11-13 16:06:26 -0800464 }
465
466 link->open = 1;
467
468 dev->poll_timer.data = (unsigned long) dev;
469 mod_timer(&dev->poll_timer, jiffies + POLL_PERIOD);
470
471 DEBUGP(2, dev, "<- cm4040_open (successfully)\n");
Jonathan Corbet8b5332f2008-06-19 14:34:41 -0600472 ret = nonseekable_open(inode, filp);
473out:
Arnd Bergmann613655f2010-06-02 14:28:52 +0200474 mutex_unlock(&cm4040_mutex);
Jonathan Corbet8b5332f2008-06-19 14:34:41 -0600475 return ret;
Harald Welte77c44ab2005-11-13 16:06:26 -0800476}
477
478static int cm4040_close(struct inode *inode, struct file *filp)
479{
480 struct reader_dev *dev = filp->private_data;
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200481 struct pcmcia_device *link;
Harald Welte77c44ab2005-11-13 16:06:26 -0800482 int minor = iminor(inode);
483
484 DEBUGP(2, dev, "-> cm4040_close(maj/min=%d.%d)\n", imajor(inode),
485 iminor(inode));
486
487 if (minor >= CM_MAX_DEV)
488 return -ENODEV;
489
490 link = dev_table[minor];
491 if (link == NULL)
492 return -ENODEV;
493
494 cm4040_stop_poll(dev);
495
496 link->open = 0;
497 wake_up(&dev->devq);
498
499 DEBUGP(2, dev, "<- cm4040_close\n");
500 return 0;
501}
502
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200503static void cm4040_reader_release(struct pcmcia_device *link)
Harald Welte77c44ab2005-11-13 16:06:26 -0800504{
505 struct reader_dev *dev = link->priv;
506
507 DEBUGP(3, dev, "-> cm4040_reader_release\n");
508 while (link->open) {
509 DEBUGP(3, dev, KERN_INFO MODULE_NAME ": delaying release "
510 "until process has terminated\n");
511 wait_event(dev->devq, (link->open == 0));
512 }
513 DEBUGP(3, dev, "<- cm4040_reader_release\n");
514 return;
515}
516
Dominik Brodowski00990e72010-07-30 13:13:46 +0200517static int cm4040_config_check(struct pcmcia_device *p_dev, void *priv_data)
Dominik Brodowski84e2d342008-07-29 08:38:55 +0200518{
Dominik Brodowski00990e72010-07-30 13:13:46 +0200519 return pcmcia_request_io(p_dev);
Dominik Brodowski84e2d342008-07-29 08:38:55 +0200520}
521
522
Dominik Brodowski15b99ac2006-03-31 17:26:06 +0200523static int reader_config(struct pcmcia_device *link, int devno)
Harald Welte77c44ab2005-11-13 16:06:26 -0800524{
Harald Welte77c44ab2005-11-13 16:06:26 -0800525 struct reader_dev *dev;
Dominik Brodowski84e2d342008-07-29 08:38:55 +0200526 int fail_rc;
Harald Welte77c44ab2005-11-13 16:06:26 -0800527
Dominik Brodowski00990e72010-07-30 13:13:46 +0200528 link->config_flags |= CONF_AUTO_SET_IO;
529
Dominik Brodowski84e2d342008-07-29 08:38:55 +0200530 if (pcmcia_loop_config(link, cm4040_config_check, NULL))
Harald Welte77c44ab2005-11-13 16:06:26 -0800531 goto cs_release;
532
Dominik Brodowski1ac71e52010-07-29 19:27:09 +0200533 fail_rc = pcmcia_enable_device(link);
Dominik Brodowski4c89e882008-08-03 10:07:45 +0200534 if (fail_rc != 0) {
Dominik Brodowskidd2e5a12009-11-03 10:27:34 +0100535 dev_printk(KERN_INFO, &link->dev,
Dominik Brodowski1ac71e52010-07-29 19:27:09 +0200536 "pcmcia_enable_device failed 0x%x\n",
Harald Welte77c44ab2005-11-13 16:06:26 -0800537 fail_rc);
538 goto cs_release;
539 }
540
541 dev = link->priv;
Harald Welte77c44ab2005-11-13 16:06:26 -0800542
Dominik Brodowski9a017a92010-07-24 15:58:54 +0200543 DEBUGP(2, dev, "device " DEVICE_NAME "%d at %pR\n", devno,
544 link->resource[0]);
Harald Welte77c44ab2005-11-13 16:06:26 -0800545 DEBUGP(2, dev, "<- reader_config (succ)\n");
546
Dominik Brodowski15b99ac2006-03-31 17:26:06 +0200547 return 0;
Harald Welte77c44ab2005-11-13 16:06:26 -0800548
Harald Welte77c44ab2005-11-13 16:06:26 -0800549cs_release:
550 reader_release(link);
Dominik Brodowski15b99ac2006-03-31 17:26:06 +0200551 return -ENODEV;
Harald Welte77c44ab2005-11-13 16:06:26 -0800552}
553
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200554static void reader_release(struct pcmcia_device *link)
Harald Welte77c44ab2005-11-13 16:06:26 -0800555{
Daniel Ritz925796e2007-08-10 13:00:58 -0700556 cm4040_reader_release(link);
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200557 pcmcia_disable_device(link);
Harald Welte77c44ab2005-11-13 16:06:26 -0800558}
559
Dominik Brodowski15b99ac2006-03-31 17:26:06 +0200560static int reader_probe(struct pcmcia_device *link)
Harald Welte77c44ab2005-11-13 16:06:26 -0800561{
562 struct reader_dev *dev;
Dominik Brodowski15b99ac2006-03-31 17:26:06 +0200563 int i, ret;
Harald Welte77c44ab2005-11-13 16:06:26 -0800564
565 for (i = 0; i < CM_MAX_DEV; i++) {
566 if (dev_table[i] == NULL)
567 break;
568 }
569
570 if (i == CM_MAX_DEV)
Dominik Brodowskif8cfa612005-11-14 21:25:51 +0100571 return -ENODEV;
Harald Welte77c44ab2005-11-13 16:06:26 -0800572
573 dev = kzalloc(sizeof(struct reader_dev), GFP_KERNEL);
574 if (dev == NULL)
Dominik Brodowskif8cfa612005-11-14 21:25:51 +0100575 return -ENOMEM;
Harald Welte77c44ab2005-11-13 16:06:26 -0800576
577 dev->timeout = CCID_DRIVER_MINIMUM_TIMEOUT;
578 dev->buffer_status = 0;
579
Harald Welte77c44ab2005-11-13 16:06:26 -0800580 link->priv = dev;
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200581 dev->p_dev = link;
Harald Welte77c44ab2005-11-13 16:06:26 -0800582
Harald Welte77c44ab2005-11-13 16:06:26 -0800583 dev_table[i] = link;
584
Harald Welte77c44ab2005-11-13 16:06:26 -0800585 init_waitqueue_head(&dev->devq);
586 init_waitqueue_head(&dev->poll_wait);
587 init_waitqueue_head(&dev->read_wait);
588 init_waitqueue_head(&dev->write_wait);
Jiri Slaby40565f12007-02-12 00:52:31 -0800589 setup_timer(&dev->poll_timer, cm4040_do_poll, 0);
Harald Welte77c44ab2005-11-13 16:06:26 -0800590
Dominik Brodowski15b99ac2006-03-31 17:26:06 +0200591 ret = reader_config(link, i);
Akinobu Mita54493c12007-05-09 02:33:31 -0700592 if (ret) {
593 dev_table[i] = NULL;
594 kfree(dev);
Dominik Brodowski15b99ac2006-03-31 17:26:06 +0200595 return ret;
Akinobu Mita54493c12007-05-09 02:33:31 -0700596 }
Dominik Brodowskif8cfa612005-11-14 21:25:51 +0100597
Greg Kroah-Hartman03457cd2008-07-21 20:03:34 -0700598 device_create(cmx_class, NULL, MKDEV(major, i), NULL, "cmx%d", i);
Harald Welte67bc6202006-02-14 09:21:26 +0100599
Dominik Brodowskif8cfa612005-11-14 21:25:51 +0100600 return 0;
Harald Welte77c44ab2005-11-13 16:06:26 -0800601}
602
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200603static void reader_detach(struct pcmcia_device *link)
Harald Welte77c44ab2005-11-13 16:06:26 -0800604{
605 struct reader_dev *dev = link->priv;
Dominik Brodowskicc3b4862005-11-14 21:23:14 +0100606 int devno;
Harald Welte77c44ab2005-11-13 16:06:26 -0800607
608 /* find device */
Dominik Brodowskicc3b4862005-11-14 21:23:14 +0100609 for (devno = 0; devno < CM_MAX_DEV; devno++) {
610 if (dev_table[devno] == link)
Harald Welte77c44ab2005-11-13 16:06:26 -0800611 break;
612 }
Dominik Brodowskicc3b4862005-11-14 21:23:14 +0100613 if (devno == CM_MAX_DEV)
Harald Welte77c44ab2005-11-13 16:06:26 -0800614 return;
615
Dominik Brodowskie2d40962006-03-02 00:09:29 +0100616 reader_release(link);
Dominik Brodowskicc3b4862005-11-14 21:23:14 +0100617
618 dev_table[devno] = NULL;
619 kfree(dev);
620
tonyj@suse.de07c015e2007-08-07 22:28:44 -0700621 device_destroy(cmx_class, MKDEV(major, devno));
Harald Welte67bc6202006-02-14 09:21:26 +0100622
Harald Welte77c44ab2005-11-13 16:06:26 -0800623 return;
624}
625
Arjan van de Ven62322d22006-07-03 00:24:21 -0700626static const struct file_operations reader_fops = {
Harald Welte77c44ab2005-11-13 16:06:26 -0800627 .owner = THIS_MODULE,
628 .read = cm4040_read,
629 .write = cm4040_write,
630 .open = cm4040_open,
631 .release = cm4040_close,
632 .poll = cm4040_poll,
Arnd Bergmann6038f372010-08-15 18:52:59 +0200633 .llseek = no_llseek,
Harald Welte77c44ab2005-11-13 16:06:26 -0800634};
635
Joe Perches25f8f542011-05-03 19:29:01 -0700636static const struct pcmcia_device_id cm4040_ids[] = {
Harald Welte77c44ab2005-11-13 16:06:26 -0800637 PCMCIA_DEVICE_MANF_CARD(0x0223, 0x0200),
638 PCMCIA_DEVICE_PROD_ID12("OMNIKEY", "CardMan 4040",
639 0xE32CDD8C, 0x8F23318B),
640 PCMCIA_DEVICE_NULL,
641};
642MODULE_DEVICE_TABLE(pcmcia, cm4040_ids);
643
644static struct pcmcia_driver reader_driver = {
645 .owner = THIS_MODULE,
Dominik Brodowski2e9b9812010-08-08 11:36:26 +0200646 .name = "cm4040_cs",
Dominik Brodowski15b99ac2006-03-31 17:26:06 +0200647 .probe = reader_probe,
Dominik Brodowskicc3b4862005-11-14 21:23:14 +0100648 .remove = reader_detach,
Harald Welte77c44ab2005-11-13 16:06:26 -0800649 .id_table = cm4040_ids,
650};
651
652static int __init cm4040_init(void)
653{
Harald Welte67bc6202006-02-14 09:21:26 +0100654 int rc;
655
Harald Welte67bc6202006-02-14 09:21:26 +0100656 cmx_class = class_create(THIS_MODULE, "cardman_4040");
Akinobu Mita5eb5fc92006-10-17 15:25:59 +0900657 if (IS_ERR(cmx_class))
658 return PTR_ERR(cmx_class);
Harald Welte67bc6202006-02-14 09:21:26 +0100659
Harald Welte77c44ab2005-11-13 16:06:26 -0800660 major = register_chrdev(0, DEVICE_NAME, &reader_fops);
661 if (major < 0) {
662 printk(KERN_WARNING MODULE_NAME
663 ": could not get major number\n");
Akinobu Mita54493c12007-05-09 02:33:31 -0700664 class_destroy(cmx_class);
Akinobu Mita5eb5fc92006-10-17 15:25:59 +0900665 return major;
Harald Welte77c44ab2005-11-13 16:06:26 -0800666 }
Harald Welte7fc5b1e2006-05-10 13:28:52 +0200667
668 rc = pcmcia_register_driver(&reader_driver);
669 if (rc < 0) {
670 unregister_chrdev(major, DEVICE_NAME);
Akinobu Mita54493c12007-05-09 02:33:31 -0700671 class_destroy(cmx_class);
Harald Welte7fc5b1e2006-05-10 13:28:52 +0200672 return rc;
673 }
674
Harald Welte77c44ab2005-11-13 16:06:26 -0800675 return 0;
676}
677
678static void __exit cm4040_exit(void)
679{
Harald Welte77c44ab2005-11-13 16:06:26 -0800680 pcmcia_unregister_driver(&reader_driver);
Harald Welte77c44ab2005-11-13 16:06:26 -0800681 unregister_chrdev(major, DEVICE_NAME);
Harald Welte67bc6202006-02-14 09:21:26 +0100682 class_destroy(cmx_class);
Harald Welte77c44ab2005-11-13 16:06:26 -0800683}
684
685module_init(cm4040_init);
686module_exit(cm4040_exit);
687MODULE_LICENSE("Dual BSD/GPL");