Commit | Line | Data |
---|---|---|
77c44ab1 HW |
1 | /* |
2 | * A driver for the Omnikey PCMCIA smartcard reader CardMan 4040 | |
3 | * | |
4 | * (c) 2000-2004 Omnikey AG (http://www.omnikey.com/) | |
5 | * | |
67bc6200 | 6 | * (C) 2005-2006 Harald Welte <laforge@gnumonks.org> |
77c44ab1 HW |
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 | |
67bc6200 | 12 | * - add class interface for udev device creation |
77c44ab1 HW |
13 | * |
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 | ||
77c44ab1 HW |
20 | #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> | |
613655fa | 27 | #include <linux/mutex.h> |
77c44ab1 | 28 | #include <linux/wait.h> |
7c0f6ba6 | 29 | #include <linux/uaccess.h> |
77c44ab1 HW |
30 | #include <asm/io.h> |
31 | ||
77c44ab1 HW |
32 | #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 | ||
dd2e5a15 | 40 | #define reader_to_dev(x) (&x->p_dev->dev) |
cbf624f0 DB |
41 | |
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); \ | |
77c44ab1 | 49 | } while (0) |
77c44ab1 | 50 | |
613655fa | 51 | static DEFINE_MUTEX(cm4040_mutex); |
77c44ab1 HW |
52 | |
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 | ||
fba395ee | 62 | static void reader_release(struct pcmcia_device *link); |
77c44ab1 HW |
63 | |
64 | static int major; | |
67bc6200 | 65 | static struct class *cmx_class; |
77c44ab1 HW |
66 | |
67 | #define BS_READABLE 0x01 | |
68 | #define BS_WRITABLE 0x02 | |
69 | ||
70 | struct reader_dev { | |
fd238232 | 71 | struct pcmcia_device *p_dev; |
77c44ab1 HW |
72 | 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 | ||
fba395ee | 83 | static struct pcmcia_device *dev_table[CM_MAX_DEV]; |
77c44ab1 | 84 | |
cbf624f0 | 85 | #ifndef CM4040_DEBUG |
77c44ab1 HW |
86 | #define xoutb outb |
87 | #define xinb inb | |
88 | #else | |
89 | static inline void xoutb(unsigned char val, unsigned short port) | |
90 | { | |
cbf624f0 | 91 | pr_debug("outb(val=%.2x,port=%.4x)\n", val, port); |
77c44ab1 HW |
92 | outb(val, port); |
93 | } | |
94 | ||
95 | static inline unsigned char xinb(unsigned short port) | |
96 | { | |
97 | unsigned char val; | |
98 | ||
99 | val = inb(port); | |
cbf624f0 | 100 | pr_debug("%.2x=inb(%.4x)\n", val, port); |
77c44ab1 HW |
101 | return val; |
102 | } | |
103 | #endif | |
104 | ||
105 | /* poll the device fifo status register. not to be confused with | |
106 | * the poll syscall. */ | |
107 | static void cm4040_do_poll(unsigned long dummy) | |
108 | { | |
109 | struct reader_dev *dev = (struct reader_dev *) dummy; | |
9a017a91 | 110 | unsigned int obs = xinb(dev->p_dev->resource[0]->start |
77c44ab1 HW |
111 | + 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 | ||
133 | static void cm4040_stop_poll(struct reader_dev *dev) | |
134 | { | |
135 | del_timer_sync(&dev->poll_timer); | |
136 | } | |
137 | ||
138 | static int wait_for_bulk_out_ready(struct reader_dev *dev) | |
139 | { | |
140 | int i, rc; | |
9a017a91 | 141 | int iobase = dev->p_dev->resource[0]->start; |
77c44ab1 HW |
142 | |
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 */ | |
169 | static int write_sync_reg(unsigned char val, struct reader_dev *dev) | |
170 | { | |
9a017a91 | 171 | int iobase = dev->p_dev->resource[0]->start; |
77c44ab1 HW |
172 | 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 | ||
186 | static int wait_for_bulk_in_ready(struct reader_dev *dev) | |
187 | { | |
188 | int i, rc; | |
9a017a91 | 189 | int iobase = dev->p_dev->resource[0]->start; |
77c44ab1 HW |
190 | |
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 | ||
215 | static 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; | |
9a017a91 | 219 | int iobase = dev->p_dev->resource[0]->start; |
77c44ab1 HW |
220 | 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 | ||
e2d40963 | 240 | if (!pcmcia_dev_present(dev->p_dev)) |
77c44ab1 HW |
241 | 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); | |
cbf624f0 DB |
253 | #ifdef CM4040_DEBUG |
254 | pr_debug("%lu:%2x ", i, dev->r_buf[i]); | |
77c44ab1 | 255 | } |
cbf624f0 | 256 | pr_debug("\n"); |
77c44ab1 HW |
257 | #else |
258 | } | |
259 | #endif | |
260 | ||
261 | bytes_to_read = 5 + le32_to_cpu(*(__le32 *)&dev->r_buf[1]); | |
262 | ||
e657ea17 | 263 | DEBUGP(6, dev, "BytesToRead=%zu\n", bytes_to_read); |
77c44ab1 HW |
264 | |
265 | min_bytes_to_read = min(count, bytes_to_read + 5); | |
059819a4 | 266 | min_bytes_to_read = min_t(size_t, min_bytes_to_read, READ_WRITE_BUFFER_SIZE); |
77c44ab1 | 267 | |
e657ea17 | 268 | DEBUGP(6, dev, "Min=%zu\n", min_bytes_to_read); |
77c44ab1 HW |
269 | |
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); | |
cbf624f0 DB |
280 | #ifdef CM4040_DEBUG |
281 | pr_debug("%lu:%2x ", i, dev->r_buf[i]); | |
77c44ab1 | 282 | } |
cbf624f0 | 283 | pr_debug("\n"); |
77c44ab1 HW |
284 | #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 | ||
317 | static 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; | |
9a017a91 | 321 | int iobase = dev->p_dev->resource[0]->start; |
77c44ab1 HW |
322 | 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 | ||
059819a4 | 333 | if ((count < 5) || (count > READ_WRITE_BUFFER_SIZE)) { |
5b5e0928 | 334 | DEBUGP(2, dev, "<- cm4040_write buffersize=%zd < 5\n", count); |
77c44ab1 HW |
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 | ||
e2d40963 | 344 | if (!pcmcia_dev_present(dev->p_dev)) |
77c44ab1 HW |
345 | 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 | ||
418 | static 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 | ||
435 | static int cm4040_open(struct inode *inode, struct file *filp) | |
436 | { | |
437 | struct reader_dev *dev; | |
fba395ee | 438 | struct pcmcia_device *link; |
77c44ab1 | 439 | int minor = iminor(inode); |
8b5332f6 | 440 | int ret; |
77c44ab1 HW |
441 | |
442 | if (minor >= CM_MAX_DEV) | |
443 | return -ENODEV; | |
444 | ||
613655fa | 445 | mutex_lock(&cm4040_mutex); |
77c44ab1 | 446 | link = dev_table[minor]; |
8b5332f6 JC |
447 | if (link == NULL || !pcmcia_dev_present(link)) { |
448 | ret = -ENODEV; | |
449 | goto out; | |
450 | } | |
77c44ab1 | 451 | |
8b5332f6 JC |
452 | if (link->open) { |
453 | ret = -EBUSY; | |
454 | goto out; | |
455 | } | |
77c44ab1 HW |
456 | |
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"); | |
8b5332f6 JC |
462 | ret = -EAGAIN; |
463 | goto out; | |
77c44ab1 HW |
464 | } |
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"); | |
8b5332f6 JC |
472 | ret = nonseekable_open(inode, filp); |
473 | out: | |
613655fa | 474 | mutex_unlock(&cm4040_mutex); |
8b5332f6 | 475 | return ret; |
77c44ab1 HW |
476 | } |
477 | ||
478 | static int cm4040_close(struct inode *inode, struct file *filp) | |
479 | { | |
480 | struct reader_dev *dev = filp->private_data; | |
fba395ee | 481 | struct pcmcia_device *link; |
77c44ab1 HW |
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 | ||
fba395ee | 503 | static void cm4040_reader_release(struct pcmcia_device *link) |
77c44ab1 HW |
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 | ||
00990e7c | 517 | static int cm4040_config_check(struct pcmcia_device *p_dev, void *priv_data) |
77c44ab1 | 518 | { |
00990e7c | 519 | return pcmcia_request_io(p_dev); |
84e2d340 DB |
520 | } |
521 | ||
522 | ||
523 | static int reader_config(struct pcmcia_device *link, int devno) | |
524 | { | |
525 | struct reader_dev *dev; | |
526 | int fail_rc; | |
77c44ab1 | 527 | |
00990e7c DB |
528 | link->config_flags |= CONF_AUTO_SET_IO; |
529 | ||
84e2d340 | 530 | if (pcmcia_loop_config(link, cm4040_config_check, NULL)) |
77c44ab1 HW |
531 | goto cs_release; |
532 | ||
1ac71e5a | 533 | fail_rc = pcmcia_enable_device(link); |
4c89e88b | 534 | if (fail_rc != 0) { |
f2e6cf76 JP |
535 | dev_info(&link->dev, "pcmcia_enable_device failed 0x%x\n", |
536 | fail_rc); | |
77c44ab1 HW |
537 | goto cs_release; |
538 | } | |
539 | ||
540 | dev = link->priv; | |
77c44ab1 | 541 | |
9a017a91 DB |
542 | DEBUGP(2, dev, "device " DEVICE_NAME "%d at %pR\n", devno, |
543 | link->resource[0]); | |
77c44ab1 HW |
544 | DEBUGP(2, dev, "<- reader_config (succ)\n"); |
545 | ||
15b99ac1 | 546 | return 0; |
77c44ab1 | 547 | |
77c44ab1 HW |
548 | cs_release: |
549 | reader_release(link); | |
15b99ac1 | 550 | return -ENODEV; |
77c44ab1 HW |
551 | } |
552 | ||
fba395ee | 553 | static void reader_release(struct pcmcia_device *link) |
77c44ab1 | 554 | { |
925796e0 | 555 | cm4040_reader_release(link); |
fba395ee | 556 | pcmcia_disable_device(link); |
77c44ab1 HW |
557 | } |
558 | ||
15b99ac1 | 559 | static int reader_probe(struct pcmcia_device *link) |
77c44ab1 HW |
560 | { |
561 | struct reader_dev *dev; | |
15b99ac1 | 562 | int i, ret; |
77c44ab1 HW |
563 | |
564 | for (i = 0; i < CM_MAX_DEV; i++) { | |
565 | if (dev_table[i] == NULL) | |
566 | break; | |
567 | } | |
568 | ||
569 | if (i == CM_MAX_DEV) | |
f8cfa618 | 570 | return -ENODEV; |
77c44ab1 HW |
571 | |
572 | dev = kzalloc(sizeof(struct reader_dev), GFP_KERNEL); | |
573 | if (dev == NULL) | |
f8cfa618 | 574 | return -ENOMEM; |
77c44ab1 HW |
575 | |
576 | dev->timeout = CCID_DRIVER_MINIMUM_TIMEOUT; | |
577 | dev->buffer_status = 0; | |
578 | ||
77c44ab1 | 579 | link->priv = dev; |
fba395ee | 580 | dev->p_dev = link; |
77c44ab1 | 581 | |
77c44ab1 HW |
582 | dev_table[i] = link; |
583 | ||
77c44ab1 HW |
584 | init_waitqueue_head(&dev->devq); |
585 | init_waitqueue_head(&dev->poll_wait); | |
586 | init_waitqueue_head(&dev->read_wait); | |
587 | init_waitqueue_head(&dev->write_wait); | |
40565f19 | 588 | setup_timer(&dev->poll_timer, cm4040_do_poll, 0); |
77c44ab1 | 589 | |
15b99ac1 | 590 | ret = reader_config(link, i); |
54493c10 AM |
591 | if (ret) { |
592 | dev_table[i] = NULL; | |
593 | kfree(dev); | |
15b99ac1 | 594 | return ret; |
54493c10 | 595 | } |
f8cfa618 | 596 | |
03457cd4 | 597 | device_create(cmx_class, NULL, MKDEV(major, i), NULL, "cmx%d", i); |
67bc6200 | 598 | |
f8cfa618 | 599 | return 0; |
77c44ab1 HW |
600 | } |
601 | ||
fba395ee | 602 | static void reader_detach(struct pcmcia_device *link) |
77c44ab1 HW |
603 | { |
604 | struct reader_dev *dev = link->priv; | |
cc3b4866 | 605 | int devno; |
77c44ab1 HW |
606 | |
607 | /* find device */ | |
cc3b4866 DB |
608 | for (devno = 0; devno < CM_MAX_DEV; devno++) { |
609 | if (dev_table[devno] == link) | |
77c44ab1 HW |
610 | break; |
611 | } | |
cc3b4866 | 612 | if (devno == CM_MAX_DEV) |
77c44ab1 HW |
613 | return; |
614 | ||
e2d40963 | 615 | reader_release(link); |
cc3b4866 DB |
616 | |
617 | dev_table[devno] = NULL; | |
618 | kfree(dev); | |
619 | ||
07c015e7 | 620 | device_destroy(cmx_class, MKDEV(major, devno)); |
67bc6200 | 621 | |
77c44ab1 HW |
622 | return; |
623 | } | |
624 | ||
62322d25 | 625 | static const struct file_operations reader_fops = { |
77c44ab1 HW |
626 | .owner = THIS_MODULE, |
627 | .read = cm4040_read, | |
628 | .write = cm4040_write, | |
629 | .open = cm4040_open, | |
630 | .release = cm4040_close, | |
631 | .poll = cm4040_poll, | |
6038f373 | 632 | .llseek = no_llseek, |
77c44ab1 HW |
633 | }; |
634 | ||
25f8f54f | 635 | static const struct pcmcia_device_id cm4040_ids[] = { |
77c44ab1 HW |
636 | PCMCIA_DEVICE_MANF_CARD(0x0223, 0x0200), |
637 | PCMCIA_DEVICE_PROD_ID12("OMNIKEY", "CardMan 4040", | |
638 | 0xE32CDD8C, 0x8F23318B), | |
639 | PCMCIA_DEVICE_NULL, | |
640 | }; | |
641 | MODULE_DEVICE_TABLE(pcmcia, cm4040_ids); | |
642 | ||
643 | static struct pcmcia_driver reader_driver = { | |
644 | .owner = THIS_MODULE, | |
2e9b981a | 645 | .name = "cm4040_cs", |
15b99ac1 | 646 | .probe = reader_probe, |
cc3b4866 | 647 | .remove = reader_detach, |
77c44ab1 HW |
648 | .id_table = cm4040_ids, |
649 | }; | |
650 | ||
651 | static int __init cm4040_init(void) | |
652 | { | |
67bc6200 HW |
653 | int rc; |
654 | ||
67bc6200 | 655 | cmx_class = class_create(THIS_MODULE, "cardman_4040"); |
5eb5fc97 AM |
656 | if (IS_ERR(cmx_class)) |
657 | return PTR_ERR(cmx_class); | |
67bc6200 | 658 | |
77c44ab1 HW |
659 | major = register_chrdev(0, DEVICE_NAME, &reader_fops); |
660 | if (major < 0) { | |
661 | printk(KERN_WARNING MODULE_NAME | |
662 | ": could not get major number\n"); | |
54493c10 | 663 | class_destroy(cmx_class); |
5eb5fc97 | 664 | return major; |
77c44ab1 | 665 | } |
7fc5b1e3 HW |
666 | |
667 | rc = pcmcia_register_driver(&reader_driver); | |
668 | if (rc < 0) { | |
669 | unregister_chrdev(major, DEVICE_NAME); | |
54493c10 | 670 | class_destroy(cmx_class); |
7fc5b1e3 HW |
671 | return rc; |
672 | } | |
673 | ||
77c44ab1 HW |
674 | return 0; |
675 | } | |
676 | ||
677 | static void __exit cm4040_exit(void) | |
678 | { | |
77c44ab1 | 679 | pcmcia_unregister_driver(&reader_driver); |
77c44ab1 | 680 | unregister_chrdev(major, DEVICE_NAME); |
67bc6200 | 681 | class_destroy(cmx_class); |
77c44ab1 HW |
682 | } |
683 | ||
684 | module_init(cm4040_init); | |
685 | module_exit(cm4040_exit); | |
686 | MODULE_LICENSE("Dual BSD/GPL"); |