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Linux v2.6.15-rc7
[pohmelfs.git] / drivers / char / pcmcia / cm4040_cs.c
blob4c698d908ffa90124cc769f62a0cb50169d91d65
1 /*
2 * A driver for the Omnikey PCMCIA smartcard reader CardMan 4040
3 *
4 * (c) 2000-2004 Omnikey AG (http://www.omnikey.com/)
5 *
6 * (C) 2005 Harald Welte <laforge@gnumonks.org>
7 * - 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
12 *
13 * The device basically is a USB CCID compliant device that has been
14 * attached to an I/O-Mapped FIFO.
15 *
16 * All rights reserved, Dual BSD/GPL Licensed.
17 */
18
19 /* #define PCMCIA_DEBUG 6 */
20
21 #include <linux/kernel.h>
22 #include <linux/module.h>
23 #include <linux/slab.h>
24 #include <linux/init.h>
25 #include <linux/fs.h>
26 #include <linux/delay.h>
27 #include <linux/poll.h>
28 #include <linux/wait.h>
29 #include <asm/uaccess.h>
30 #include <asm/io.h>
31
32 #include <pcmcia/cs_types.h>
33 #include <pcmcia/cs.h>
34 #include <pcmcia/cistpl.h>
35 #include <pcmcia/cisreg.h>
36 #include <pcmcia/ciscode.h>
37 #include <pcmcia/ds.h>
38
39 #include "cm4040_cs.h"
40
41
42 #ifdef PCMCIA_DEBUG
43 #define reader_to_dev(x) (&handle_to_dev(x->link.handle))
44 static int pc_debug = PCMCIA_DEBUG;
45 module_param(pc_debug, int, 0600);
46 #define DEBUGP(n, rdr, x, args...) do { \
47 if (pc_debug >= (n)) \
48 dev_printk(KERN_DEBUG, reader_to_dev(rdr), "%s:" x, \
49 __FUNCTION__ , ##args); \
50 } while (0)
51 #else
52 #define DEBUGP(n, rdr, x, args...)
53 #endif
54
55 static char *version =
56 "OMNIKEY CardMan 4040 v1.1.0gm4 - All bugs added by Harald Welte";
57
58 #define CCID_DRIVER_BULK_DEFAULT_TIMEOUT (150*HZ)
59 #define CCID_DRIVER_ASYNC_POWERUP_TIMEOUT (35*HZ)
60 #define CCID_DRIVER_MINIMUM_TIMEOUT (3*HZ)
61 #define READ_WRITE_BUFFER_SIZE 512
62 #define POLL_LOOP_COUNT 1000
63
64 /* how often to poll for fifo status change */
65 #define POLL_PERIOD msecs_to_jiffies(10)
66
67 static void reader_release(dev_link_t *link);
68 static void reader_detach(dev_link_t *link);
69
70 static int major;
71
72 #define BS_READABLE 0x01
73 #define BS_WRITABLE 0x02
74
75 struct reader_dev {
76 dev_link_t link;
77 dev_node_t node;
78 wait_queue_head_t devq;
79 wait_queue_head_t poll_wait;
80 wait_queue_head_t read_wait;
81 wait_queue_head_t write_wait;
82 unsigned long buffer_status;
83 unsigned long timeout;
84 unsigned char s_buf[READ_WRITE_BUFFER_SIZE];
85 unsigned char r_buf[READ_WRITE_BUFFER_SIZE];
86 struct timer_list poll_timer;
87 };
88
89 static dev_info_t dev_info = MODULE_NAME;
90 static dev_link_t *dev_table[CM_MAX_DEV];
91
92 #ifndef PCMCIA_DEBUG
93 #define xoutb outb
94 #define xinb inb
95 #else
96 static inline void xoutb(unsigned char val, unsigned short port)
97 {
98 if (pc_debug >= 7)
99 printk(KERN_DEBUG "outb(val=%.2x,port=%.4x)\n", val, port);
100 outb(val, port);
101 }
102
103 static inline unsigned char xinb(unsigned short port)
104 {
105 unsigned char val;
106
107 val = inb(port);
108 if (pc_debug >= 7)
109 printk(KERN_DEBUG "%.2x=inb(%.4x)\n", val, port);
110 return val;
111 }
112 #endif
113
114 /* poll the device fifo status register. not to be confused with
115 * the poll syscall. */
116 static void cm4040_do_poll(unsigned long dummy)
117 {
118 struct reader_dev *dev = (struct reader_dev *) dummy;
119 unsigned int obs = xinb(dev->link.io.BasePort1
120 + REG_OFFSET_BUFFER_STATUS);
121
122 if ((obs & BSR_BULK_IN_FULL)) {
123 set_bit(BS_READABLE, &dev->buffer_status);
124 DEBUGP(4, dev, "waking up read_wait\n");
125 wake_up_interruptible(&dev->read_wait);
126 } else
127 clear_bit(BS_READABLE, &dev->buffer_status);
128
129 if (!(obs & BSR_BULK_OUT_FULL)) {
130 set_bit(BS_WRITABLE, &dev->buffer_status);
131 DEBUGP(4, dev, "waking up write_wait\n");
132 wake_up_interruptible(&dev->write_wait);
133 } else
134 clear_bit(BS_WRITABLE, &dev->buffer_status);
135
136 if (dev->buffer_status)
137 wake_up_interruptible(&dev->poll_wait);
138
139 mod_timer(&dev->poll_timer, jiffies + POLL_PERIOD);
140 }
141
142 static void cm4040_stop_poll(struct reader_dev *dev)
143 {
144 del_timer_sync(&dev->poll_timer);
145 }
146
147 static int wait_for_bulk_out_ready(struct reader_dev *dev)
148 {
149 int i, rc;
150 int iobase = dev->link.io.BasePort1;
151
152 for (i = 0; i < POLL_LOOP_COUNT; i++) {
153 if ((xinb(iobase + REG_OFFSET_BUFFER_STATUS)
154 & BSR_BULK_OUT_FULL) == 0) {
155 DEBUGP(4, dev, "BulkOut empty (i=%d)\n", i);
156 return 1;
157 }
158 }
159
160 DEBUGP(4, dev, "wait_event_interruptible_timeout(timeout=%ld\n",
161 dev->timeout);
162 rc = wait_event_interruptible_timeout(dev->write_wait,
163 test_and_clear_bit(BS_WRITABLE,
164 &dev->buffer_status),
165 dev->timeout);
166
167 if (rc > 0)
168 DEBUGP(4, dev, "woke up: BulkOut empty\n");
169 else if (rc == 0)
170 DEBUGP(4, dev, "woke up: BulkOut full, returning 0 :(\n");
171 else if (rc < 0)
172 DEBUGP(4, dev, "woke up: signal arrived\n");
173
174 return rc;
175 }
176
177 /* Write to Sync Control Register */
178 static int write_sync_reg(unsigned char val, struct reader_dev *dev)
179 {
180 int iobase = dev->link.io.BasePort1;
181 int rc;
182
183 rc = wait_for_bulk_out_ready(dev);
184 if (rc <= 0)
185 return rc;
186
187 xoutb(val, iobase + REG_OFFSET_SYNC_CONTROL);
188 rc = wait_for_bulk_out_ready(dev);
189 if (rc <= 0)
190 return rc;
191
192 return 1;
193 }
194
195 static int wait_for_bulk_in_ready(struct reader_dev *dev)
196 {
197 int i, rc;
198 int iobase = dev->link.io.BasePort1;
199
200 for (i = 0; i < POLL_LOOP_COUNT; i++) {
201 if ((xinb(iobase + REG_OFFSET_BUFFER_STATUS)
202 & BSR_BULK_IN_FULL) == BSR_BULK_IN_FULL) {
203 DEBUGP(3, dev, "BulkIn full (i=%d)\n", i);
204 return 1;
205 }
206 }
207
208 DEBUGP(4, dev, "wait_event_interruptible_timeout(timeout=%ld\n",
209 dev->timeout);
210 rc = wait_event_interruptible_timeout(dev->read_wait,
211 test_and_clear_bit(BS_READABLE,
212 &dev->buffer_status),
213 dev->timeout);
214 if (rc > 0)
215 DEBUGP(4, dev, "woke up: BulkIn full\n");
216 else if (rc == 0)
217 DEBUGP(4, dev, "woke up: BulkIn not full, returning 0 :(\n");
218 else if (rc < 0)
219 DEBUGP(4, dev, "woke up: signal arrived\n");
220
221 return rc;
222 }
223
224 static ssize_t cm4040_read(struct file *filp, char __user *buf,
225 size_t count, loff_t *ppos)
226 {
227 struct reader_dev *dev = filp->private_data;
228 int iobase = dev->link.io.BasePort1;
229 size_t bytes_to_read;
230 unsigned long i;
231 size_t min_bytes_to_read;
232 int rc;
233 unsigned char uc;
234
235 DEBUGP(2, dev, "-> cm4040_read(%s,%d)\n", current->comm, current->pid);
236
237 if (count == 0)
238 return 0;
239
240 if (count < 10)
241 return -EFAULT;
242
243 if (filp->f_flags & O_NONBLOCK) {
244 DEBUGP(4, dev, "filep->f_flags O_NONBLOCK set\n");
245 DEBUGP(2, dev, "<- cm4040_read (failure)\n");
246 return -EAGAIN;
247 }
248
249 if ((dev->link.state & DEV_PRESENT)==0)
250 return -ENODEV;
251
252 for (i = 0; i < 5; i++) {
253 rc = wait_for_bulk_in_ready(dev);
254 if (rc <= 0) {
255 DEBUGP(5, dev, "wait_for_bulk_in_ready rc=%.2x\n", rc);
256 DEBUGP(2, dev, "<- cm4040_read (failed)\n");
257 if (rc == -ERESTARTSYS)
258 return rc;
259 return -EIO;
260 }
261 dev->r_buf[i] = xinb(iobase + REG_OFFSET_BULK_IN);
262 #ifdef PCMCIA_DEBUG
263 if (pc_debug >= 6)
264 printk(KERN_DEBUG "%lu:%2x ", i, dev->r_buf[i]);
265 }
266 printk("\n");
267 #else
268 }
269 #endif
270
271 bytes_to_read = 5 + le32_to_cpu(*(__le32 *)&dev->r_buf[1]);
272
273 DEBUGP(6, dev, "BytesToRead=%lu\n", bytes_to_read);
274
275 min_bytes_to_read = min(count, bytes_to_read + 5);
276
277 DEBUGP(6, dev, "Min=%lu\n", min_bytes_to_read);
278
279 for (i = 0; i < (min_bytes_to_read-5); i++) {
280 rc = wait_for_bulk_in_ready(dev);
281 if (rc <= 0) {
282 DEBUGP(5, dev, "wait_for_bulk_in_ready rc=%.2x\n", rc);
283 DEBUGP(2, dev, "<- cm4040_read (failed)\n");
284 if (rc == -ERESTARTSYS)
285 return rc;
286 return -EIO;
287 }
288 dev->r_buf[i+5] = xinb(iobase + REG_OFFSET_BULK_IN);
289 #ifdef PCMCIA_DEBUG
290 if (pc_debug >= 6)
291 printk(KERN_DEBUG "%lu:%2x ", i, dev->r_buf[i]);
292 }
293 printk("\n");
294 #else
295 }
296 #endif
297
298 *ppos = min_bytes_to_read;
299 if (copy_to_user(buf, dev->r_buf, min_bytes_to_read))
300 return -EFAULT;
301
302 rc = wait_for_bulk_in_ready(dev);
303 if (rc <= 0) {
304 DEBUGP(5, dev, "wait_for_bulk_in_ready rc=%.2x\n", rc);
305 DEBUGP(2, dev, "<- cm4040_read (failed)\n");
306 if (rc == -ERESTARTSYS)
307 return rc;
308 return -EIO;
309 }
310
311 rc = write_sync_reg(SCR_READER_TO_HOST_DONE, dev);
312 if (rc <= 0) {
313 DEBUGP(5, dev, "write_sync_reg c=%.2x\n", rc);
314 DEBUGP(2, dev, "<- cm4040_read (failed)\n");
315 if (rc == -ERESTARTSYS)
316 return rc;
317 else
318 return -EIO;
319 }
320
321 uc = xinb(iobase + REG_OFFSET_BULK_IN);
322
323 DEBUGP(2, dev, "<- cm4040_read (successfully)\n");
324 return min_bytes_to_read;
325 }
326
327 static ssize_t cm4040_write(struct file *filp, const char __user *buf,
328 size_t count, loff_t *ppos)
329 {
330 struct reader_dev *dev = filp->private_data;
331 int iobase = dev->link.io.BasePort1;
332 ssize_t rc;
333 int i;
334 unsigned int bytes_to_write;
335
336 DEBUGP(2, dev, "-> cm4040_write(%s,%d)\n", current->comm, current->pid);
337
338 if (count == 0) {
339 DEBUGP(2, dev, "<- cm4040_write empty read (successfully)\n");
340 return 0;
341 }
342
343 if (count < 5) {
344 DEBUGP(2, dev, "<- cm4040_write buffersize=%Zd < 5\n", count);
345 return -EIO;
346 }
347
348 if (filp->f_flags & O_NONBLOCK) {
349 DEBUGP(4, dev, "filep->f_flags O_NONBLOCK set\n");
350 DEBUGP(4, dev, "<- cm4040_write (failure)\n");
351 return -EAGAIN;
352 }
353
354 if ((dev->link.state & DEV_PRESENT) == 0)
355 return -ENODEV;
356
357 bytes_to_write = count;
358 if (copy_from_user(dev->s_buf, buf, bytes_to_write))
359 return -EFAULT;
360
361 switch (dev->s_buf[0]) {
362 case CMD_PC_TO_RDR_XFRBLOCK:
363 case CMD_PC_TO_RDR_SECURE:
364 case CMD_PC_TO_RDR_TEST_SECURE:
365 case CMD_PC_TO_RDR_OK_SECURE:
366 dev->timeout = CCID_DRIVER_BULK_DEFAULT_TIMEOUT;
367 break;
368
369 case CMD_PC_TO_RDR_ICCPOWERON:
370 dev->timeout = CCID_DRIVER_ASYNC_POWERUP_TIMEOUT;
371 break;
372
373 case CMD_PC_TO_RDR_GETSLOTSTATUS:
374 case CMD_PC_TO_RDR_ICCPOWEROFF:
375 case CMD_PC_TO_RDR_GETPARAMETERS:
376 case CMD_PC_TO_RDR_RESETPARAMETERS:
377 case CMD_PC_TO_RDR_SETPARAMETERS:
378 case CMD_PC_TO_RDR_ESCAPE:
379 case CMD_PC_TO_RDR_ICCCLOCK:
380 default:
381 dev->timeout = CCID_DRIVER_MINIMUM_TIMEOUT;
382 break;
383 }
384
385 rc = write_sync_reg(SCR_HOST_TO_READER_START, dev);
386 if (rc <= 0) {
387 DEBUGP(5, dev, "write_sync_reg c=%.2Zx\n", rc);
388 DEBUGP(2, dev, "<- cm4040_write (failed)\n");
389 if (rc == -ERESTARTSYS)
390 return rc;
391 else
392 return -EIO;
393 }
394
395 DEBUGP(4, dev, "start \n");
396
397 for (i = 0; i < bytes_to_write; i++) {
398 rc = wait_for_bulk_out_ready(dev);
399 if (rc <= 0) {
400 DEBUGP(5, dev, "wait_for_bulk_out_ready rc=%.2Zx\n",
401 rc);
402 DEBUGP(2, dev, "<- cm4040_write (failed)\n");
403 if (rc == -ERESTARTSYS)
404 return rc;
405 else
406 return -EIO;
407 }
408
409 xoutb(dev->s_buf[i],iobase + REG_OFFSET_BULK_OUT);
410 }
411 DEBUGP(4, dev, "end\n");
412
413 rc = write_sync_reg(SCR_HOST_TO_READER_DONE, dev);
414
415 if (rc <= 0) {
416 DEBUGP(5, dev, "write_sync_reg c=%.2Zx\n", rc);
417 DEBUGP(2, dev, "<- cm4040_write (failed)\n");
418 if (rc == -ERESTARTSYS)
419 return rc;
420 else
421 return -EIO;
422 }
423
424 DEBUGP(2, dev, "<- cm4040_write (successfully)\n");
425 return count;
426 }
427
428 static unsigned int cm4040_poll(struct file *filp, poll_table *wait)
429 {
430 struct reader_dev *dev = filp->private_data;
431 unsigned int mask = 0;
432
433 poll_wait(filp, &dev->poll_wait, wait);
434
435 if (test_and_clear_bit(BS_READABLE, &dev->buffer_status))
436 mask |= POLLIN | POLLRDNORM;
437 if (test_and_clear_bit(BS_WRITABLE, &dev->buffer_status))
438 mask |= POLLOUT | POLLWRNORM;
439
440 DEBUGP(2, dev, "<- cm4040_poll(%u)\n", mask);
441
442 return mask;
443 }
444
445 static int cm4040_open(struct inode *inode, struct file *filp)
446 {
447 struct reader_dev *dev;
448 dev_link_t *link;
449 int minor = iminor(inode);
450
451 if (minor >= CM_MAX_DEV)
452 return -ENODEV;
453
454 link = dev_table[minor];
455 if (link == NULL || !(DEV_OK(link)))
456 return -ENODEV;
457
458 if (link->open)
459 return -EBUSY;
460
461 dev = link->priv;
462 filp->private_data = dev;
463
464 if (filp->f_flags & O_NONBLOCK) {
465 DEBUGP(4, dev, "filep->f_flags O_NONBLOCK set\n");
466 return -EAGAIN;
467 }
468
469 link->open = 1;
470
471 dev->poll_timer.data = (unsigned long) dev;
472 mod_timer(&dev->poll_timer, jiffies + POLL_PERIOD);
473
474 DEBUGP(2, dev, "<- cm4040_open (successfully)\n");
475 return nonseekable_open(inode, filp);
476 }
477
478 static int cm4040_close(struct inode *inode, struct file *filp)
479 {
480 struct reader_dev *dev = filp->private_data;
481 dev_link_t *link;
482 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
503 static void cm4040_reader_release(dev_link_t *link)
504 {
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
517 static void reader_config(dev_link_t *link, int devno)
518 {
519 client_handle_t handle;
520 struct reader_dev *dev;
521 tuple_t tuple;
522 cisparse_t parse;
523 config_info_t conf;
524 u_char buf[64];
525 int fail_fn, fail_rc;
526 int rc;
527
528 handle = link->handle;
529
530 tuple.DesiredTuple = CISTPL_CONFIG;
531 tuple.Attributes = 0;
532 tuple.TupleData = buf;
533 tuple.TupleDataMax = sizeof(buf);
534 tuple.TupleOffset = 0;
535
536 if ((fail_rc = pcmcia_get_first_tuple(handle, &tuple)) != CS_SUCCESS) {
537 fail_fn = GetFirstTuple;
538 goto cs_failed;
539 }
540 if ((fail_rc = pcmcia_get_tuple_data(handle, &tuple)) != CS_SUCCESS) {
541 fail_fn = GetTupleData;
542 goto cs_failed;
543 }
544 if ((fail_rc = pcmcia_parse_tuple(handle, &tuple, &parse))
545 != CS_SUCCESS) {
546 fail_fn = ParseTuple;
547 goto cs_failed;
548 }
549 if ((fail_rc = pcmcia_get_configuration_info(handle, &conf))
550 != CS_SUCCESS) {
551 fail_fn = GetConfigurationInfo;
552 goto cs_failed;
553 }
554
555 link->state |= DEV_CONFIG;
556 link->conf.ConfigBase = parse.config.base;
557 link->conf.Present = parse.config.rmask[0];
558 link->conf.Vcc = conf.Vcc;
559
560 link->io.BasePort2 = 0;
561 link->io.NumPorts2 = 0;
562 link->io.Attributes2 = 0;
563 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
564 for (rc = pcmcia_get_first_tuple(handle, &tuple);
565 rc == CS_SUCCESS;
566 rc = pcmcia_get_next_tuple(handle, &tuple)) {
567 rc = pcmcia_get_tuple_data(handle, &tuple);
568 if (rc != CS_SUCCESS)
569 continue;
570 rc = pcmcia_parse_tuple(handle, &tuple, &parse);
571 if (rc != CS_SUCCESS)
572 continue;
573
574 link->conf.ConfigIndex = parse.cftable_entry.index;
575
576 if (!parse.cftable_entry.io.nwin)
577 continue;
578
579 link->io.BasePort1 = parse.cftable_entry.io.win[0].base;
580 link->io.NumPorts1 = parse.cftable_entry.io.win[0].len;
581 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
582 if (!(parse.cftable_entry.io.flags & CISTPL_IO_8BIT))
583 link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
584 if (!(parse.cftable_entry.io.flags & CISTPL_IO_16BIT))
585 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
586 link->io.IOAddrLines = parse.cftable_entry.io.flags
587 & CISTPL_IO_LINES_MASK;
588 rc = pcmcia_request_io(handle, &link->io);
589
590 dev_printk(KERN_INFO, &handle_to_dev(handle), "foo");
591 if (rc == CS_SUCCESS)
592 break;
593 else
594 dev_printk(KERN_INFO, &handle_to_dev(handle),
595 "pcmcia_request_io failed 0x%x\n", rc);
596 }
597 if (rc != CS_SUCCESS)
598 goto cs_release;
599
600 link->conf.IntType = 00000002;
601
602 if ((fail_rc = pcmcia_request_configuration(handle,&link->conf))
603 !=CS_SUCCESS) {
604 fail_fn = RequestConfiguration;
605 dev_printk(KERN_INFO, &handle_to_dev(handle),
606 "pcmcia_request_configuration failed 0x%x\n",
607 fail_rc);
608 goto cs_release;
609 }
610
611 dev = link->priv;
612 sprintf(dev->node.dev_name, DEVICE_NAME "%d", devno);
613 dev->node.major = major;
614 dev->node.minor = devno;
615 dev->node.next = NULL;
616 link->dev = &dev->node;
617 link->state &= ~DEV_CONFIG_PENDING;
618
619 DEBUGP(2, dev, "device " DEVICE_NAME "%d at 0x%.4x-0x%.4x\n", devno,
620 link->io.BasePort1, link->io.BasePort1+link->io.NumPorts1);
621 DEBUGP(2, dev, "<- reader_config (succ)\n");
622
623 return;
624
625 cs_failed:
626 cs_error(handle, fail_fn, fail_rc);
627 cs_release:
628 reader_release(link);
629 link->state &= ~DEV_CONFIG_PENDING;
630 }
631
632 static int reader_event(event_t event, int priority,
633 event_callback_args_t *args)
634 {
635 dev_link_t *link;
636 struct reader_dev *dev;
637 int devno;
638
639 link = args->client_data;
640 dev = link->priv;
641 DEBUGP(3, dev, "-> reader_event\n");
642 for (devno = 0; devno < CM_MAX_DEV; devno++) {
643 if (dev_table[devno] == link)
644 break;
645 }
646 if (devno == CM_MAX_DEV)
647 return CS_BAD_ADAPTER;
648
649 switch (event) {
650 case CS_EVENT_CARD_INSERTION:
651 DEBUGP(5, dev, "CS_EVENT_CARD_INSERTION\n");
652 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
653 reader_config(link, devno);
654 break;
655 case CS_EVENT_CARD_REMOVAL:
656 DEBUGP(5, dev, "CS_EVENT_CARD_REMOVAL\n");
657 link->state &= ~DEV_PRESENT;
658 break;
659 case CS_EVENT_PM_SUSPEND:
660 DEBUGP(5, dev, "CS_EVENT_PM_SUSPEND "
661 "(fall-through to CS_EVENT_RESET_PHYSICAL)\n");
662 link->state |= DEV_SUSPEND;
663
664 case CS_EVENT_RESET_PHYSICAL:
665 DEBUGP(5, dev, "CS_EVENT_RESET_PHYSICAL\n");
666 if (link->state & DEV_CONFIG) {
667 DEBUGP(5, dev, "ReleaseConfiguration\n");
668 pcmcia_release_configuration(link->handle);
669 }
670 break;
671 case CS_EVENT_PM_RESUME:
672 DEBUGP(5, dev, "CS_EVENT_PM_RESUME "
673 "(fall-through to CS_EVENT_CARD_RESET)\n");
674 link->state &= ~DEV_SUSPEND;
675
676 case CS_EVENT_CARD_RESET:
677 DEBUGP(5, dev, "CS_EVENT_CARD_RESET\n");
678 if ((link->state & DEV_CONFIG)) {
679 DEBUGP(5, dev, "RequestConfiguration\n");
680 pcmcia_request_configuration(link->handle,
681 &link->conf);
682 }
683 break;
684 default:
685 DEBUGP(5, dev, "reader_event: unknown event %.2x\n",
686 event);
687 break;
688 }
689 DEBUGP(3, dev, "<- reader_event\n");
690 return CS_SUCCESS;
691 }
692
693 static void reader_release(dev_link_t *link)
694 {
695 cm4040_reader_release(link->priv);
696 pcmcia_release_configuration(link->handle);
697 pcmcia_release_io(link->handle, &link->io);
698 }
699
700 static dev_link_t *reader_attach(void)
701 {
702 struct reader_dev *dev;
703 dev_link_t *link;
704 client_reg_t client_reg;
705 int i;
706
707 for (i = 0; i < CM_MAX_DEV; i++) {
708 if (dev_table[i] == NULL)
709 break;
710 }
711
712 if (i == CM_MAX_DEV)
713 return NULL;
714
715 dev = kzalloc(sizeof(struct reader_dev), GFP_KERNEL);
716 if (dev == NULL)
717 return NULL;
718
719 dev->timeout = CCID_DRIVER_MINIMUM_TIMEOUT;
720 dev->buffer_status = 0;
721
722 link = &dev->link;
723 link->priv = dev;
724
725 link->conf.IntType = INT_MEMORY_AND_IO;
726 dev_table[i] = link;
727
728 client_reg.dev_info = &dev_info;
729 client_reg.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE;
730 client_reg.EventMask=
731 CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
732 CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
733 CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
734 client_reg.Version = 0x0210;
735 client_reg.event_callback_args.client_data = link;
736 i = pcmcia_register_client(&link->handle, &client_reg);
737 if (i) {
738 cs_error(link->handle, RegisterClient, i);
739 reader_detach(link);
740 return NULL;
741 }
742 init_waitqueue_head(&dev->devq);
743 init_waitqueue_head(&dev->poll_wait);
744 init_waitqueue_head(&dev->read_wait);
745 init_waitqueue_head(&dev->write_wait);
746 init_timer(&dev->poll_timer);
747 dev->poll_timer.function = &cm4040_do_poll;
748
749 return link;
750 }
751
752 static void reader_detach_by_devno(int devno, dev_link_t *link)
753 {
754 struct reader_dev *dev = link->priv;
755
756 if (link->state & DEV_CONFIG) {
757 DEBUGP(5, dev, "device still configured (try to release it)\n");
758 reader_release(link);
759 }
760
761 pcmcia_deregister_client(link->handle);
762 dev_table[devno] = NULL;
763 DEBUGP(5, dev, "freeing dev=%p\n", dev);
764 cm4040_stop_poll(dev);
765 kfree(dev);
766 return;
767 }
768
769 static void reader_detach(dev_link_t *link)
770 {
771 int i;
772
773 /* find device */
774 for (i = 0; i < CM_MAX_DEV; i++) {
775 if (dev_table[i] == link)
776 break;
777 }
778 if (i == CM_MAX_DEV)
779 return;
780
781 reader_detach_by_devno(i, link);
782 return;
783 }
784
785 static struct file_operations reader_fops = {
786 .owner = THIS_MODULE,
787 .read = cm4040_read,
788 .write = cm4040_write,
789 .open = cm4040_open,
790 .release = cm4040_close,
791 .poll = cm4040_poll,
792 };
793
794 static struct pcmcia_device_id cm4040_ids[] = {
795 PCMCIA_DEVICE_MANF_CARD(0x0223, 0x0200),
796 PCMCIA_DEVICE_PROD_ID12("OMNIKEY", "CardMan 4040",
797 0xE32CDD8C, 0x8F23318B),
798 PCMCIA_DEVICE_NULL,
799 };
800 MODULE_DEVICE_TABLE(pcmcia, cm4040_ids);
801
802 static struct pcmcia_driver reader_driver = {
803 .owner = THIS_MODULE,
804 .drv = {
805 .name = "cm4040_cs",
806 },
807 .attach = reader_attach,
808 .detach = reader_detach,
809 .event = reader_event,
810 .id_table = cm4040_ids,
811 };
812
813 static int __init cm4040_init(void)
814 {
815 printk(KERN_INFO "%s\n", version);
816 pcmcia_register_driver(&reader_driver);
817 major = register_chrdev(0, DEVICE_NAME, &reader_fops);
818 if (major < 0) {
819 printk(KERN_WARNING MODULE_NAME
820 ": could not get major number\n");
821 return -1;
822 }
823 return 0;
824 }
825
826 static void __exit cm4040_exit(void)
827 {
828 int i;
829
830 printk(KERN_INFO MODULE_NAME ": unloading\n");
831 pcmcia_unregister_driver(&reader_driver);
832 for (i = 0; i < CM_MAX_DEV; i++) {
833 if (dev_table[i])
834 reader_detach_by_devno(i, dev_table[i]);
835 }
836 unregister_chrdev(major, DEVICE_NAME);
837 }
838
839 module_init(cm4040_init);
840 module_exit(cm4040_exit);
841 MODULE_LICENSE("Dual BSD/GPL");