1 /*
2 * A driver for the PCMCIA Smartcard Reader "Omnikey CardMan Mobile 4000"
3 *
4 * cm4000_cs.c support.linux@omnikey.com
5 *
6 * Tue Oct 23 11:32:43 GMT 2001 herp - cleaned up header files
7 * Sun Jan 20 10:11:15 MET 2002 herp - added modversion header files
8 * Thu Nov 14 16:34:11 GMT 2002 mh - added PPS functionality
9 * Tue Nov 19 16:36:27 GMT 2002 mh - added SUSPEND/RESUME functionailty
10 * Wed Jul 28 12:55:01 CEST 2004 mh - kernel 2.6 adjustments
11 *
12 * current version: 2.4.0gm4
13 *
14 * (C) 2000,2001,2002,2003,2004 Omnikey AG
15 *
16 * (C) 2005-2006 Harald Welte <laforge@gnumonks.org>
17 * - Adhere to Kernel CodingStyle
18 * - Port to 2.6.13 "new" style PCMCIA
19 * - Check for copy_{from,to}_user return values
20 * - Use nonseekable_open()
21 * - add class interface for udev device creation
22 *
23 * All rights reserved. Licensed under dual BSD/GPL license.
24 */
25
26 #include <linux/kernel.h>
27 #include <linux/module.h>
28 #include <linux/slab.h>
29 #include <linux/init.h>
30 #include <linux/fs.h>
31 #include <linux/delay.h>
32 #include <linux/bitrev.h>
33 #include <linux/mutex.h>
34 #include <linux/uaccess.h>
35 #include <linux/io.h>
36
37 #include <pcmcia/cistpl.h>
38 #include <pcmcia/cisreg.h>
39 #include <pcmcia/ciscode.h>
40 #include <pcmcia/ds.h>
41
42 #include <linux/cm4000_cs.h>
43
44 /* #define ATR_CSUM */
45
46 #define reader_to_dev(x) (&x->p_dev->dev)
47
48 /* n (debug level) is ignored */
49 /* additional debug output may be enabled by re-compiling with
50 * CM4000_DEBUG set */
51 /* #define CM4000_DEBUG */
52 #define DEBUGP(n, rdr, x, args...) do { \
53 dev_dbg(reader_to_dev(rdr), "%s:" x, \
54 __func__ , ## args); \
55 } while (0)
56
57 static DEFINE_MUTEX(cmm_mutex);
58
59 #define T_1SEC (HZ)
60 #define T_10MSEC msecs_to_jiffies(10)
61 #define T_20MSEC msecs_to_jiffies(20)
62 #define T_40MSEC msecs_to_jiffies(40)
63 #define T_50MSEC msecs_to_jiffies(50)
64 #define T_100MSEC msecs_to_jiffies(100)
65 #define T_500MSEC msecs_to_jiffies(500)
66
67 static void cm4000_release(struct pcmcia_device *link);
68
69 static int major; /* major number we get from the kernel */
70
71 /* note: the first state has to have number 0 always */
72
73 #define M_FETCH_ATR 0
74 #define M_TIMEOUT_WAIT 1
75 #define M_READ_ATR_LEN 2
76 #define M_READ_ATR 3
77 #define M_ATR_PRESENT 4
78 #define M_BAD_CARD 5
79 #define M_CARDOFF 6
80
81 #define LOCK_IO 0
82 #define LOCK_MONITOR 1
83
84 #define IS_AUTOPPS_ACT 6
85 #define IS_PROCBYTE_PRESENT 7
86 #define IS_INVREV 8
87 #define IS_ANY_T0 9
88 #define IS_ANY_T1 10
89 #define IS_ATR_PRESENT 11
90 #define IS_ATR_VALID 12
91 #define IS_CMM_ABSENT 13
92 #define IS_BAD_LENGTH 14
93 #define IS_BAD_CSUM 15
94 #define IS_BAD_CARD 16
95
96 #define REG_FLAGS0(x) (x + 0)
97 #define REG_FLAGS1(x) (x + 1)
98 #define REG_NUM_BYTES(x) (x + 2)
99 #define REG_BUF_ADDR(x) (x + 3)
100 #define REG_BUF_DATA(x) (x + 4)
101 #define REG_NUM_SEND(x) (x + 5)
102 #define REG_BAUDRATE(x) (x + 6)
103 #define REG_STOPBITS(x) (x + 7)
104
105 struct cm4000_dev {
106 struct pcmcia_device *p_dev;
107
108 unsigned char atr[MAX_ATR];
109 unsigned char rbuf[512];
110 unsigned char sbuf[512];
111
112 wait_queue_head_t devq; /* when removing cardman must not be
113 zeroed! */
114
115 wait_queue_head_t ioq; /* if IO is locked, wait on this Q */
116 wait_queue_head_t atrq; /* wait for ATR valid */
117 wait_queue_head_t readq; /* used by write to wake blk.read */
118
119 /* warning: do not move this fields.
120 * initialising to zero depends on it - see ZERO_DEV below. */
121 unsigned char atr_csum;
122 unsigned char atr_len_retry;
123 unsigned short atr_len;
124 unsigned short rlen; /* bytes avail. after write */
125 unsigned short rpos; /* latest read pos. write zeroes */
126 unsigned char procbyte; /* T=0 procedure byte */
127 unsigned char mstate; /* state of card monitor */
128 unsigned char cwarn; /* slow down warning */
129 unsigned char flags0; /* cardman IO-flags 0 */
130 unsigned char flags1; /* cardman IO-flags 1 */
131 unsigned int mdelay; /* variable monitor speeds, in jiffies */
132
133 unsigned int baudv; /* baud value for speed */
134 unsigned char ta1;
135 unsigned char proto; /* T=0, T=1, ... */
136 unsigned long flags; /* lock+flags (MONITOR,IO,ATR) * for concurrent
137 access */
138
139 unsigned char pts[4];
140
141 struct timer_list timer; /* used to keep monitor running */
142 int monitor_running;
143 };
144
145 #define ZERO_DEV(dev) \
146 memset(&dev->atr_csum,0, \
147 sizeof(struct cm4000_dev) - \
148 offsetof(struct cm4000_dev, atr_csum))
149
150 static struct pcmcia_device *dev_table[CM4000_MAX_DEV];
151 static struct class *cmm_class;
152
153 /* This table doesn't use spaces after the comma between fields and thus
154 * violates CodingStyle. However, I don't really think wrapping it around will
155 * make it any clearer to read -HW */
156 static unsigned char fi_di_table[10][14] = {
157 /*FI 00 01 02 03 04 05 06 07 08 09 10 11 12 13 */
158 /*DI */
159 /* 0 */ {0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11},
160 /* 1 */ {0x01,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x91,0x11,0x11,0x11,0x11},
161 /* 2 */ {0x02,0x12,0x22,0x32,0x11,0x11,0x11,0x11,0x11,0x92,0xA2,0xB2,0x11,0x11},
162 /* 3 */ {0x03,0x13,0x23,0x33,0x43,0x53,0x63,0x11,0x11,0x93,0xA3,0xB3,0xC3,0xD3},
163 /* 4 */ {0x04,0x14,0x24,0x34,0x44,0x54,0x64,0x11,0x11,0x94,0xA4,0xB4,0xC4,0xD4},
164 /* 5 */ {0x00,0x15,0x25,0x35,0x45,0x55,0x65,0x11,0x11,0x95,0xA5,0xB5,0xC5,0xD5},
165 /* 6 */ {0x06,0x16,0x26,0x36,0x46,0x56,0x66,0x11,0x11,0x96,0xA6,0xB6,0xC6,0xD6},
166 /* 7 */ {0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11},
167 /* 8 */ {0x08,0x11,0x28,0x38,0x48,0x58,0x68,0x11,0x11,0x98,0xA8,0xB8,0xC8,0xD8},
168 /* 9 */ {0x09,0x19,0x29,0x39,0x49,0x59,0x69,0x11,0x11,0x99,0xA9,0xB9,0xC9,0xD9}
169 };
170
171 #ifndef CM4000_DEBUG
172 #define xoutb outb
173 #define xinb inb
174 #else
xoutb(unsigned char val,unsigned short port)175 static inline void xoutb(unsigned char val, unsigned short port)
176 {
177 pr_debug("outb(val=%.2x,port=%.4x)\n", val, port);
178 outb(val, port);
179 }
xinb(unsigned short port)180 static inline unsigned char xinb(unsigned short port)
181 {
182 unsigned char val;
183
184 val = inb(port);
185 pr_debug("%.2x=inb(%.4x)\n", val, port);
186
187 return val;
188 }
189 #endif
190
invert_revert(unsigned char ch)191 static inline unsigned char invert_revert(unsigned char ch)
192 {
193 return bitrev8(~ch);
194 }
195
str_invert_revert(unsigned char * b,int len)196 static void str_invert_revert(unsigned char *b, int len)
197 {
198 int i;
199
200 for (i = 0; i < len; i++)
201 b[i] = invert_revert(b[i]);
202 }
203
204 #define ATRLENCK(dev,pos) \
205 if (pos>=dev->atr_len || pos>=MAX_ATR) \
206 goto return_0;
207
calc_baudv(unsigned char fidi)208 static unsigned int calc_baudv(unsigned char fidi)
209 {
210 unsigned int wcrcf, wbrcf, fi_rfu, di_rfu;
211
212 fi_rfu = 372;
213 di_rfu = 1;
214
215 /* FI */
216 switch ((fidi >> 4) & 0x0F) {
217 case 0x00:
218 wcrcf = 372;
219 break;
220 case 0x01:
221 wcrcf = 372;
222 break;
223 case 0x02:
224 wcrcf = 558;
225 break;
226 case 0x03:
227 wcrcf = 744;
228 break;
229 case 0x04:
230 wcrcf = 1116;
231 break;
232 case 0x05:
233 wcrcf = 1488;
234 break;
235 case 0x06:
236 wcrcf = 1860;
237 break;
238 case 0x07:
239 wcrcf = fi_rfu;
240 break;
241 case 0x08:
242 wcrcf = fi_rfu;
243 break;
244 case 0x09:
245 wcrcf = 512;
246 break;
247 case 0x0A:
248 wcrcf = 768;
249 break;
250 case 0x0B:
251 wcrcf = 1024;
252 break;
253 case 0x0C:
254 wcrcf = 1536;
255 break;
256 case 0x0D:
257 wcrcf = 2048;
258 break;
259 default:
260 wcrcf = fi_rfu;
261 break;
262 }
263
264 /* DI */
265 switch (fidi & 0x0F) {
266 case 0x00:
267 wbrcf = di_rfu;
268 break;
269 case 0x01:
270 wbrcf = 1;
271 break;
272 case 0x02:
273 wbrcf = 2;
274 break;
275 case 0x03:
276 wbrcf = 4;
277 break;
278 case 0x04:
279 wbrcf = 8;
280 break;
281 case 0x05:
282 wbrcf = 16;
283 break;
284 case 0x06:
285 wbrcf = 32;
286 break;
287 case 0x07:
288 wbrcf = di_rfu;
289 break;
290 case 0x08:
291 wbrcf = 12;
292 break;
293 case 0x09:
294 wbrcf = 20;
295 break;
296 default:
297 wbrcf = di_rfu;
298 break;
299 }
300
301 return (wcrcf / wbrcf);
302 }
303
io_read_num_rec_bytes(unsigned int iobase,unsigned short * s)304 static unsigned short io_read_num_rec_bytes(unsigned int iobase,
305 unsigned short *s)
306 {
307 unsigned short tmp;
308
309 tmp = *s = 0;
310 do {
311 *s = tmp;
312 tmp = inb(REG_NUM_BYTES(iobase)) |
313 (inb(REG_FLAGS0(iobase)) & 4 ? 0x100 : 0);
314 } while (tmp != *s);
315
316 return *s;
317 }
318
parse_atr(struct cm4000_dev * dev)319 static int parse_atr(struct cm4000_dev *dev)
320 {
321 unsigned char any_t1, any_t0;
322 unsigned char ch, ifno;
323 int ix, done;
324
325 DEBUGP(3, dev, "-> parse_atr: dev->atr_len = %i\n", dev->atr_len);
326
327 if (dev->atr_len < 3) {
328 DEBUGP(5, dev, "parse_atr: atr_len < 3\n");
329 return 0;
330 }
331
332 if (dev->atr[0] == 0x3f)
333 set_bit(IS_INVREV, &dev->flags);
334 else
335 clear_bit(IS_INVREV, &dev->flags);
336 ix = 1;
337 ifno = 1;
338 ch = dev->atr[1];
339 dev->proto = 0; /* XXX PROTO */
340 any_t1 = any_t0 = done = 0;
341 dev->ta1 = 0x11; /* defaults to 9600 baud */
342 do {
343 if (ifno == 1 && (ch & 0x10)) {
344 /* read first interface byte and TA1 is present */
345 dev->ta1 = dev->atr[2];
346 DEBUGP(5, dev, "Card says FiDi is 0x%.2x\n", dev->ta1);
347 ifno++;
348 } else if ((ifno == 2) && (ch & 0x10)) { /* TA(2) */
349 dev->ta1 = 0x11;
350 ifno++;
351 }
352
353 DEBUGP(5, dev, "Yi=%.2x\n", ch & 0xf0);
354 ix += ((ch & 0x10) >> 4) /* no of int.face chars */
355 +((ch & 0x20) >> 5)
356 + ((ch & 0x40) >> 6)
357 + ((ch & 0x80) >> 7);
358 /* ATRLENCK(dev,ix); */
359 if (ch & 0x80) { /* TDi */
360 ch = dev->atr[ix];
361 if ((ch & 0x0f)) {
362 any_t1 = 1;
363 DEBUGP(5, dev, "card is capable of T=1\n");
364 } else {
365 any_t0 = 1;
366 DEBUGP(5, dev, "card is capable of T=0\n");
367 }
368 } else
369 done = 1;
370 } while (!done);
371
372 DEBUGP(5, dev, "ix=%d noHist=%d any_t1=%d\n",
373 ix, dev->atr[1] & 15, any_t1);
374 if (ix + 1 + (dev->atr[1] & 0x0f) + any_t1 != dev->atr_len) {
375 DEBUGP(5, dev, "length error\n");
376 return 0;
377 }
378 if (any_t0)
379 set_bit(IS_ANY_T0, &dev->flags);
380
381 if (any_t1) { /* compute csum */
382 dev->atr_csum = 0;
383 #ifdef ATR_CSUM
384 for (i = 1; i < dev->atr_len; i++)
385 dev->atr_csum ^= dev->atr[i];
386 if (dev->atr_csum) {
387 set_bit(IS_BAD_CSUM, &dev->flags);
388 DEBUGP(5, dev, "bad checksum\n");
389 goto return_0;
390 }
391 #endif
392 if (any_t0 == 0)
393 dev->proto = 1; /* XXX PROTO */
394 set_bit(IS_ANY_T1, &dev->flags);
395 }
396
397 return 1;
398 }
399
400 struct card_fixup {
401 char atr[12];
402 u_int8_t atr_len;
403 u_int8_t stopbits;
404 };
405
406 static struct card_fixup card_fixups[] = {
407 { /* ACOS */
408 .atr = { 0x3b, 0xb3, 0x11, 0x00, 0x00, 0x41, 0x01 },
409 .atr_len = 7,
410 .stopbits = 0x03,
411 },
412 { /* Motorola */
413 .atr = {0x3b, 0x76, 0x13, 0x00, 0x00, 0x80, 0x62, 0x07,
414 0x41, 0x81, 0x81 },
415 .atr_len = 11,
416 .stopbits = 0x04,
417 },
418 };
419
set_cardparameter(struct cm4000_dev * dev)420 static void set_cardparameter(struct cm4000_dev *dev)
421 {
422 int i;
423 unsigned int iobase = dev->p_dev->resource[0]->start;
424 u_int8_t stopbits = 0x02; /* ISO default */
425
426 DEBUGP(3, dev, "-> set_cardparameter\n");
427
428 dev->flags1 = dev->flags1 | (((dev->baudv - 1) & 0x0100) >> 8);
429 xoutb(dev->flags1, REG_FLAGS1(iobase));
430 DEBUGP(5, dev, "flags1 = 0x%02x\n", dev->flags1);
431
432 /* set baudrate */
433 xoutb((unsigned char)((dev->baudv - 1) & 0xFF), REG_BAUDRATE(iobase));
434
435 DEBUGP(5, dev, "baudv = %i -> write 0x%02x\n", dev->baudv,
436 ((dev->baudv - 1) & 0xFF));
437
438 /* set stopbits */
439 for (i = 0; i < ARRAY_SIZE(card_fixups); i++) {
440 if (!memcmp(dev->atr, card_fixups[i].atr,
441 card_fixups[i].atr_len))
442 stopbits = card_fixups[i].stopbits;
443 }
444 xoutb(stopbits, REG_STOPBITS(iobase));
445
446 DEBUGP(3, dev, "<- set_cardparameter\n");
447 }
448
set_protocol(struct cm4000_dev * dev,struct ptsreq * ptsreq)449 static int set_protocol(struct cm4000_dev *dev, struct ptsreq *ptsreq)
450 {
451
452 unsigned long tmp, i;
453 unsigned short num_bytes_read;
454 unsigned char pts_reply[4];
455 ssize_t rc;
456 unsigned int iobase = dev->p_dev->resource[0]->start;
457
458 rc = 0;
459
460 DEBUGP(3, dev, "-> set_protocol\n");
461 DEBUGP(5, dev, "ptsreq->Protocol = 0x%.8x, ptsreq->Flags=0x%.8x, "
462 "ptsreq->pts1=0x%.2x, ptsreq->pts2=0x%.2x, "
463 "ptsreq->pts3=0x%.2x\n", (unsigned int)ptsreq->protocol,
464 (unsigned int)ptsreq->flags, ptsreq->pts1, ptsreq->pts2,
465 ptsreq->pts3);
466
467 /* Fill PTS structure */
468 dev->pts[0] = 0xff;
469 dev->pts[1] = 0x00;
470 tmp = ptsreq->protocol;
471 while ((tmp = (tmp >> 1)) > 0)
472 dev->pts[1]++;
473 dev->proto = dev->pts[1]; /* Set new protocol */
474 dev->pts[1] = (0x01 << 4) | (dev->pts[1]);
475
476 /* Correct Fi/Di according to CM4000 Fi/Di table */
477 DEBUGP(5, dev, "Ta(1) from ATR is 0x%.2x\n", dev->ta1);
478 /* set Fi/Di according to ATR TA(1) */
479 dev->pts[2] = fi_di_table[dev->ta1 & 0x0F][(dev->ta1 >> 4) & 0x0F];
480
481 /* Calculate PCK character */
482 dev->pts[3] = dev->pts[0] ^ dev->pts[1] ^ dev->pts[2];
483
484 DEBUGP(5, dev, "pts0=%.2x, pts1=%.2x, pts2=%.2x, pts3=%.2x\n",
485 dev->pts[0], dev->pts[1], dev->pts[2], dev->pts[3]);
486
487 /* check card convention */
488 if (test_bit(IS_INVREV, &dev->flags))
489 str_invert_revert(dev->pts, 4);
490
491 /* reset SM */
492 xoutb(0x80, REG_FLAGS0(iobase));
493
494 /* Enable access to the message buffer */
495 DEBUGP(5, dev, "Enable access to the messages buffer\n");
496 dev->flags1 = 0x20 /* T_Active */
497 | (test_bit(IS_INVREV, &dev->flags) ? 0x02 : 0x00) /* inv parity */
498 | ((dev->baudv >> 8) & 0x01); /* MSB-baud */
499 xoutb(dev->flags1, REG_FLAGS1(iobase));
500
501 DEBUGP(5, dev, "Enable message buffer -> flags1 = 0x%.2x\n",
502 dev->flags1);
503
504 /* write challenge to the buffer */
505 DEBUGP(5, dev, "Write challenge to buffer: ");
506 for (i = 0; i < 4; i++) {
507 xoutb(i, REG_BUF_ADDR(iobase));
508 xoutb(dev->pts[i], REG_BUF_DATA(iobase)); /* buf data */
509 #ifdef CM4000_DEBUG
510 pr_debug("0x%.2x ", dev->pts[i]);
511 }
512 pr_debug("\n");
513 #else
514 }
515 #endif
516
517 /* set number of bytes to write */
518 DEBUGP(5, dev, "Set number of bytes to write\n");
519 xoutb(0x04, REG_NUM_SEND(iobase));
520
521 /* Trigger CARDMAN CONTROLLER */
522 xoutb(0x50, REG_FLAGS0(iobase));
523
524 /* Monitor progress */
525 /* wait for xmit done */
526 DEBUGP(5, dev, "Waiting for NumRecBytes getting valid\n");
527
528 for (i = 0; i < 100; i++) {
529 if (inb(REG_FLAGS0(iobase)) & 0x08) {
530 DEBUGP(5, dev, "NumRecBytes is valid\n");
531 break;
532 }
533 mdelay(10);
534 }
535 if (i == 100) {
536 DEBUGP(5, dev, "Timeout waiting for NumRecBytes getting "
537 "valid\n");
538 rc = -EIO;
539 goto exit_setprotocol;
540 }
541
542 DEBUGP(5, dev, "Reading NumRecBytes\n");
543 for (i = 0; i < 100; i++) {
544 io_read_num_rec_bytes(iobase, &num_bytes_read);
545 if (num_bytes_read >= 4) {
546 DEBUGP(2, dev, "NumRecBytes = %i\n", num_bytes_read);
547 if (num_bytes_read > 4) {
548 rc = -EIO;
549 goto exit_setprotocol;
550 }
551 break;
552 }
553 mdelay(10);
554 }
555
556 /* check whether it is a short PTS reply? */
557 if (num_bytes_read == 3)
558 i = 0;
559
560 if (i == 100) {
561 DEBUGP(5, dev, "Timeout reading num_bytes_read\n");
562 rc = -EIO;
563 goto exit_setprotocol;
564 }
565
566 DEBUGP(5, dev, "Reset the CARDMAN CONTROLLER\n");
567 xoutb(0x80, REG_FLAGS0(iobase));
568
569 /* Read PPS reply */
570 DEBUGP(5, dev, "Read PPS reply\n");
571 for (i = 0; i < num_bytes_read; i++) {
572 xoutb(i, REG_BUF_ADDR(iobase));
573 pts_reply[i] = inb(REG_BUF_DATA(iobase));
574 }
575
576 #ifdef CM4000_DEBUG
577 DEBUGP(2, dev, "PTSreply: ");
578 for (i = 0; i < num_bytes_read; i++) {
579 pr_debug("0x%.2x ", pts_reply[i]);
580 }
581 pr_debug("\n");
582 #endif /* CM4000_DEBUG */
583
584 DEBUGP(5, dev, "Clear Tactive in Flags1\n");
585 xoutb(0x20, REG_FLAGS1(iobase));
586
587 /* Compare ptsreq and ptsreply */
588 if ((dev->pts[0] == pts_reply[0]) &&
589 (dev->pts[1] == pts_reply[1]) &&
590 (dev->pts[2] == pts_reply[2]) && (dev->pts[3] == pts_reply[3])) {
591 /* setcardparameter according to PPS */
592 dev->baudv = calc_baudv(dev->pts[2]);
593 set_cardparameter(dev);
594 } else if ((dev->pts[0] == pts_reply[0]) &&
595 ((dev->pts[1] & 0xef) == pts_reply[1]) &&
596 ((pts_reply[0] ^ pts_reply[1]) == pts_reply[2])) {
597 /* short PTS reply, set card parameter to default values */
598 dev->baudv = calc_baudv(0x11);
599 set_cardparameter(dev);
600 } else
601 rc = -EIO;
602
603 exit_setprotocol:
604 DEBUGP(3, dev, "<- set_protocol\n");
605 return rc;
606 }
607
io_detect_cm4000(unsigned int iobase,struct cm4000_dev * dev)608 static int io_detect_cm4000(unsigned int iobase, struct cm4000_dev *dev)
609 {
610
611 /* note: statemachine is assumed to be reset */
612 if (inb(REG_FLAGS0(iobase)) & 8) {
613 clear_bit(IS_ATR_VALID, &dev->flags);
614 set_bit(IS_CMM_ABSENT, &dev->flags);
615 return 0; /* detect CMM = 1 -> failure */
616 }
617 /* xoutb(0x40, REG_FLAGS1(iobase)); detectCMM */
618 xoutb(dev->flags1 | 0x40, REG_FLAGS1(iobase));
619 if ((inb(REG_FLAGS0(iobase)) & 8) == 0) {
620 clear_bit(IS_ATR_VALID, &dev->flags);
621 set_bit(IS_CMM_ABSENT, &dev->flags);
622 return 0; /* detect CMM=0 -> failure */
623 }
624 /* clear detectCMM again by restoring original flags1 */
625 xoutb(dev->flags1, REG_FLAGS1(iobase));
626 return 1;
627 }
628
terminate_monitor(struct cm4000_dev * dev)629 static void terminate_monitor(struct cm4000_dev *dev)
630 {
631
632 /* tell the monitor to stop and wait until
633 * it terminates.
634 */
635 DEBUGP(3, dev, "-> terminate_monitor\n");
636 wait_event_interruptible(dev->devq,
637 test_and_set_bit(LOCK_MONITOR,
638 (void *)&dev->flags));
639
640 /* now, LOCK_MONITOR has been set.
641 * allow a last cycle in the monitor.
642 * the monitor will indicate that it has
643 * finished by clearing this bit.
644 */
645 DEBUGP(5, dev, "Now allow last cycle of monitor!\n");
646 while (test_bit(LOCK_MONITOR, (void *)&dev->flags))
647 msleep(25);
648
649 DEBUGP(5, dev, "Delete timer\n");
650 del_timer_sync(&dev->timer);
651 #ifdef CM4000_DEBUG
652 dev->monitor_running = 0;
653 #endif
654
655 DEBUGP(3, dev, "<- terminate_monitor\n");
656 }
657
658 /*
659 * monitor the card every 50msec. as a side-effect, retrieve the
660 * atr once a card is inserted. another side-effect of retrieving the
661 * atr is that the card will be powered on, so there is no need to
662 * power on the card explictely from the application: the driver
663 * is already doing that for you.
664 */
665
monitor_card(unsigned long p)666 static void monitor_card(unsigned long p)
667 {
668 struct cm4000_dev *dev = (struct cm4000_dev *) p;
669 unsigned int iobase = dev->p_dev->resource[0]->start;
670 unsigned short s;
671 struct ptsreq ptsreq;
672 int i, atrc;
673
674 DEBUGP(7, dev, "-> monitor_card\n");
675
676 /* if someone has set the lock for us: we're done! */
677 if (test_and_set_bit(LOCK_MONITOR, &dev->flags)) {
678 DEBUGP(4, dev, "About to stop monitor\n");
679 /* no */
680 dev->rlen =
681 dev->rpos =
682 dev->atr_csum = dev->atr_len_retry = dev->cwarn = 0;
683 dev->mstate = M_FETCH_ATR;
684 clear_bit(LOCK_MONITOR, &dev->flags);
685 /* close et al. are sleeping on devq, so wake it */
686 wake_up_interruptible(&dev->devq);
687 DEBUGP(2, dev, "<- monitor_card (we are done now)\n");
688 return;
689 }
690
691 /* try to lock io: if it is already locked, just add another timer */
692 if (test_and_set_bit(LOCK_IO, (void *)&dev->flags)) {
693 DEBUGP(4, dev, "Couldn't get IO lock\n");
694 goto return_with_timer;
695 }
696
697 /* is a card/a reader inserted at all ? */
698 dev->flags0 = xinb(REG_FLAGS0(iobase));
699 DEBUGP(7, dev, "dev->flags0 = 0x%2x\n", dev->flags0);
700 DEBUGP(7, dev, "smartcard present: %s\n",
701 dev->flags0 & 1 ? "yes" : "no");
702 DEBUGP(7, dev, "cardman present: %s\n",
703 dev->flags0 == 0xff ? "no" : "yes");
704
705 if ((dev->flags0 & 1) == 0 /* no smartcard inserted */
706 || dev->flags0 == 0xff) { /* no cardman inserted */
707 /* no */
708 dev->rlen =
709 dev->rpos =
710 dev->atr_csum = dev->atr_len_retry = dev->cwarn = 0;
711 dev->mstate = M_FETCH_ATR;
712
713 dev->flags &= 0x000000ff; /* only keep IO and MONITOR locks */
714
715 if (dev->flags0 == 0xff) {
716 DEBUGP(4, dev, "set IS_CMM_ABSENT bit\n");
717 set_bit(IS_CMM_ABSENT, &dev->flags);
718 } else if (test_bit(IS_CMM_ABSENT, &dev->flags)) {
719 DEBUGP(4, dev, "clear IS_CMM_ABSENT bit "
720 "(card is removed)\n");
721 clear_bit(IS_CMM_ABSENT, &dev->flags);
722 }
723
724 goto release_io;
725 } else if ((dev->flags0 & 1) && test_bit(IS_CMM_ABSENT, &dev->flags)) {
726 /* cardman and card present but cardman was absent before
727 * (after suspend with inserted card) */
728 DEBUGP(4, dev, "clear IS_CMM_ABSENT bit (card is inserted)\n");
729 clear_bit(IS_CMM_ABSENT, &dev->flags);
730 }
731
732 if (test_bit(IS_ATR_VALID, &dev->flags) == 1) {
733 DEBUGP(7, dev, "believe ATR is already valid (do nothing)\n");
734 goto release_io;
735 }
736
737 switch (dev->mstate) {
738 unsigned char flags0;
739 case M_CARDOFF:
740 DEBUGP(4, dev, "M_CARDOFF\n");
741 flags0 = inb(REG_FLAGS0(iobase));
742 if (flags0 & 0x02) {
743 /* wait until Flags0 indicate power is off */
744 dev->mdelay = T_10MSEC;
745 } else {
746 /* Flags0 indicate power off and no card inserted now;
747 * Reset CARDMAN CONTROLLER */
748 xoutb(0x80, REG_FLAGS0(iobase));
749
750 /* prepare for fetching ATR again: after card off ATR
751 * is read again automatically */
752 dev->rlen =
753 dev->rpos =
754 dev->atr_csum =
755 dev->atr_len_retry = dev->cwarn = 0;
756 dev->mstate = M_FETCH_ATR;
757
758 /* minimal gap between CARDOFF and read ATR is 50msec */
759 dev->mdelay = T_50MSEC;
760 }
761 break;
762 case M_FETCH_ATR:
763 DEBUGP(4, dev, "M_FETCH_ATR\n");
764 xoutb(0x80, REG_FLAGS0(iobase));
765 DEBUGP(4, dev, "Reset BAUDV to 9600\n");
766 dev->baudv = 0x173; /* 9600 */
767 xoutb(0x02, REG_STOPBITS(iobase)); /* stopbits=2 */
768 xoutb(0x73, REG_BAUDRATE(iobase)); /* baud value */
769 xoutb(0x21, REG_FLAGS1(iobase)); /* T_Active=1, baud
770 value */
771 /* warm start vs. power on: */
772 xoutb(dev->flags0 & 2 ? 0x46 : 0x44, REG_FLAGS0(iobase));
773 dev->mdelay = T_40MSEC;
774 dev->mstate = M_TIMEOUT_WAIT;
775 break;
776 case M_TIMEOUT_WAIT:
777 DEBUGP(4, dev, "M_TIMEOUT_WAIT\n");
778 /* numRecBytes */
779 io_read_num_rec_bytes(iobase, &dev->atr_len);
780 dev->mdelay = T_10MSEC;
781 dev->mstate = M_READ_ATR_LEN;
782 break;
783 case M_READ_ATR_LEN:
784 DEBUGP(4, dev, "M_READ_ATR_LEN\n");
785 /* infinite loop possible, since there is no timeout */
786
787 #define MAX_ATR_LEN_RETRY 100
788
789 if (dev->atr_len == io_read_num_rec_bytes(iobase, &s)) {
790 if (dev->atr_len_retry++ >= MAX_ATR_LEN_RETRY) { /* + XX msec */
791 dev->mdelay = T_10MSEC;
792 dev->mstate = M_READ_ATR;
793 }
794 } else {
795 dev->atr_len = s;
796 dev->atr_len_retry = 0; /* set new timeout */
797 }
798
799 DEBUGP(4, dev, "Current ATR_LEN = %i\n", dev->atr_len);
800 break;
801 case M_READ_ATR:
802 DEBUGP(4, dev, "M_READ_ATR\n");
803 xoutb(0x80, REG_FLAGS0(iobase)); /* reset SM */
804 for (i = 0; i < dev->atr_len; i++) {
805 xoutb(i, REG_BUF_ADDR(iobase));
806 dev->atr[i] = inb(REG_BUF_DATA(iobase));
807 }
808 /* Deactivate T_Active flags */
809 DEBUGP(4, dev, "Deactivate T_Active flags\n");
810 dev->flags1 = 0x01;
811 xoutb(dev->flags1, REG_FLAGS1(iobase));
812
813 /* atr is present (which doesn't mean it's valid) */
814 set_bit(IS_ATR_PRESENT, &dev->flags);
815 if (dev->atr[0] == 0x03)
816 str_invert_revert(dev->atr, dev->atr_len);
817 atrc = parse_atr(dev);
818 if (atrc == 0) { /* atr invalid */
819 dev->mdelay = 0;
820 dev->mstate = M_BAD_CARD;
821 } else {
822 dev->mdelay = T_50MSEC;
823 dev->mstate = M_ATR_PRESENT;
824 set_bit(IS_ATR_VALID, &dev->flags);
825 }
826
827 if (test_bit(IS_ATR_VALID, &dev->flags) == 1) {
828 DEBUGP(4, dev, "monitor_card: ATR valid\n");
829 /* if ta1 == 0x11, no PPS necessary (default values) */
830 /* do not do PPS with multi protocol cards */
831 if ((test_bit(IS_AUTOPPS_ACT, &dev->flags) == 0) &&
832 (dev->ta1 != 0x11) &&
833 !(test_bit(IS_ANY_T0, &dev->flags) &&
834 test_bit(IS_ANY_T1, &dev->flags))) {
835 DEBUGP(4, dev, "Perform AUTOPPS\n");
836 set_bit(IS_AUTOPPS_ACT, &dev->flags);
837 ptsreq.protocol = (0x01 << dev->proto);
838 ptsreq.flags = 0x01;
839 ptsreq.pts1 = 0x00;
840 ptsreq.pts2 = 0x00;
841 ptsreq.pts3 = 0x00;
842 if (set_protocol(dev, &ptsreq) == 0) {
843 DEBUGP(4, dev, "AUTOPPS ret SUCC\n");
844 clear_bit(IS_AUTOPPS_ACT, &dev->flags);
845 wake_up_interruptible(&dev->atrq);
846 } else {
847 DEBUGP(4, dev, "AUTOPPS failed: "
848 "repower using defaults\n");
849 /* prepare for repowering */
850 clear_bit(IS_ATR_PRESENT, &dev->flags);
851 clear_bit(IS_ATR_VALID, &dev->flags);
852 dev->rlen =
853 dev->rpos =
854 dev->atr_csum =
855 dev->atr_len_retry = dev->cwarn = 0;
856 dev->mstate = M_FETCH_ATR;
857
858 dev->mdelay = T_50MSEC;
859 }
860 } else {
861 /* for cards which use slightly different
862 * params (extra guard time) */
863 set_cardparameter(dev);
864 if (test_bit(IS_AUTOPPS_ACT, &dev->flags) == 1)
865 DEBUGP(4, dev, "AUTOPPS already active "
866 "2nd try:use default values\n");
867 if (dev->ta1 == 0x11)
868 DEBUGP(4, dev, "No AUTOPPS necessary "
869 "TA(1)==0x11\n");
870 if (test_bit(IS_ANY_T0, &dev->flags)
871 && test_bit(IS_ANY_T1, &dev->flags))
872 DEBUGP(4, dev, "Do NOT perform AUTOPPS "
873 "with multiprotocol cards\n");
874 clear_bit(IS_AUTOPPS_ACT, &dev->flags);
875 wake_up_interruptible(&dev->atrq);
876 }
877 } else {
878 DEBUGP(4, dev, "ATR invalid\n");
879 wake_up_interruptible(&dev->atrq);
880 }
881 break;
882 case M_BAD_CARD:
883 DEBUGP(4, dev, "M_BAD_CARD\n");
884 /* slow down warning, but prompt immediately after insertion */
885 if (dev->cwarn == 0 || dev->cwarn == 10) {
886 set_bit(IS_BAD_CARD, &dev->flags);
887 dev_warn(&dev->p_dev->dev, MODULE_NAME ": ");
888 if (test_bit(IS_BAD_CSUM, &dev->flags)) {
889 DEBUGP(4, dev, "ATR checksum (0x%.2x, should "
890 "be zero) failed\n", dev->atr_csum);
891 }
892 #ifdef CM4000_DEBUG
893 else if (test_bit(IS_BAD_LENGTH, &dev->flags)) {
894 DEBUGP(4, dev, "ATR length error\n");
895 } else {
896 DEBUGP(4, dev, "card damaged or wrong way "
897 "inserted\n");
898 }
899 #endif
900 dev->cwarn = 0;
901 wake_up_interruptible(&dev->atrq); /* wake open */
902 }
903 dev->cwarn++;
904 dev->mdelay = T_100MSEC;
905 dev->mstate = M_FETCH_ATR;
906 break;
907 default:
908 DEBUGP(7, dev, "Unknown action\n");
909 break; /* nothing */
910 }
911
912 release_io:
913 DEBUGP(7, dev, "release_io\n");
914 clear_bit(LOCK_IO, &dev->flags);
915 wake_up_interruptible(&dev->ioq); /* whoever needs IO */
916
917 return_with_timer:
918 DEBUGP(7, dev, "<- monitor_card (returns with timer)\n");
919 mod_timer(&dev->timer, jiffies + dev->mdelay);
920 clear_bit(LOCK_MONITOR, &dev->flags);
921 }
922
923 /* Interface to userland (file_operations) */
924
cmm_read(struct file * filp,__user char * buf,size_t count,loff_t * ppos)925 static ssize_t cmm_read(struct file *filp, __user char *buf, size_t count,
926 loff_t *ppos)
927 {
928 struct cm4000_dev *dev = filp->private_data;
929 unsigned int iobase = dev->p_dev->resource[0]->start;
930 ssize_t rc;
931 int i, j, k;
932
933 DEBUGP(2, dev, "-> cmm_read(%s,%d)\n", current->comm, current->pid);
934
935 if (count == 0) /* according to manpage */
936 return 0;
937
938 if (!pcmcia_dev_present(dev->p_dev) || /* device removed */
939 test_bit(IS_CMM_ABSENT, &dev->flags))
940 return -ENODEV;
941
942 if (test_bit(IS_BAD_CSUM, &dev->flags))
943 return -EIO;
944
945 /* also see the note about this in cmm_write */
946 if (wait_event_interruptible
947 (dev->atrq,
948 ((filp->f_flags & O_NONBLOCK)
949 || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags) != 0)))) {
950 if (filp->f_flags & O_NONBLOCK)
951 return -EAGAIN;
952 return -ERESTARTSYS;
953 }
954
955 if (test_bit(IS_ATR_VALID, &dev->flags) == 0)
956 return -EIO;
957
958 /* this one implements blocking IO */
959 if (wait_event_interruptible
960 (dev->readq,
961 ((filp->f_flags & O_NONBLOCK) || (dev->rpos < dev->rlen)))) {
962 if (filp->f_flags & O_NONBLOCK)
963 return -EAGAIN;
964 return -ERESTARTSYS;
965 }
966
967 /* lock io */
968 if (wait_event_interruptible
969 (dev->ioq,
970 ((filp->f_flags & O_NONBLOCK)
971 || (test_and_set_bit(LOCK_IO, (void *)&dev->flags) == 0)))) {
972 if (filp->f_flags & O_NONBLOCK)
973 return -EAGAIN;
974 return -ERESTARTSYS;
975 }
976
977 rc = 0;
978 dev->flags0 = inb(REG_FLAGS0(iobase));
979 if ((dev->flags0 & 1) == 0 /* no smartcard inserted */
980 || dev->flags0 == 0xff) { /* no cardman inserted */
981 clear_bit(IS_ATR_VALID, &dev->flags);
982 if (dev->flags0 & 1) {
983 set_bit(IS_CMM_ABSENT, &dev->flags);
984 rc = -ENODEV;
985 } else {
986 rc = -EIO;
987 }
988 goto release_io;
989 }
990
991 DEBUGP(4, dev, "begin read answer\n");
992 j = min(count, (size_t)(dev->rlen - dev->rpos));
993 k = dev->rpos;
994 if (k + j > 255)
995 j = 256 - k;
996 DEBUGP(4, dev, "read1 j=%d\n", j);
997 for (i = 0; i < j; i++) {
998 xoutb(k++, REG_BUF_ADDR(iobase));
999 dev->rbuf[i] = xinb(REG_BUF_DATA(iobase));
1000 }
1001 j = min(count, (size_t)(dev->rlen - dev->rpos));
1002 if (k + j > 255) {
1003 DEBUGP(4, dev, "read2 j=%d\n", j);
1004 dev->flags1 |= 0x10; /* MSB buf addr set */
1005 xoutb(dev->flags1, REG_FLAGS1(iobase));
1006 for (; i < j; i++) {
1007 xoutb(k++, REG_BUF_ADDR(iobase));
1008 dev->rbuf[i] = xinb(REG_BUF_DATA(iobase));
1009 }
1010 }
1011
1012 if (dev->proto == 0 && count > dev->rlen - dev->rpos && i) {
1013 DEBUGP(4, dev, "T=0 and count > buffer\n");
1014 dev->rbuf[i] = dev->rbuf[i - 1];
1015 dev->rbuf[i - 1] = dev->procbyte;
1016 j++;
1017 }
1018 count = j;
1019
1020 dev->rpos = dev->rlen + 1;
1021
1022 /* Clear T1Active */
1023 DEBUGP(4, dev, "Clear T1Active\n");
1024 dev->flags1 &= 0xdf;
1025 xoutb(dev->flags1, REG_FLAGS1(iobase));
1026
1027 xoutb(0, REG_FLAGS1(iobase)); /* clear detectCMM */
1028 /* last check before exit */
1029 if (!io_detect_cm4000(iobase, dev)) {
1030 rc = -ENODEV;
1031 goto release_io;
1032 }
1033
1034 if (test_bit(IS_INVREV, &dev->flags) && count > 0)
1035 str_invert_revert(dev->rbuf, count);
1036
1037 if (copy_to_user(buf, dev->rbuf, count))
1038 rc = -EFAULT;
1039
1040 release_io:
1041 clear_bit(LOCK_IO, &dev->flags);
1042 wake_up_interruptible(&dev->ioq);
1043
1044 DEBUGP(2, dev, "<- cmm_read returns: rc = %Zi\n",
1045 (rc < 0 ? rc : count));
1046 return rc < 0 ? rc : count;
1047 }
1048
cmm_write(struct file * filp,const char __user * buf,size_t count,loff_t * ppos)1049 static ssize_t cmm_write(struct file *filp, const char __user *buf,
1050 size_t count, loff_t *ppos)
1051 {
1052 struct cm4000_dev *dev = filp->private_data;
1053 unsigned int iobase = dev->p_dev->resource[0]->start;
1054 unsigned short s;
1055 unsigned char tmp;
1056 unsigned char infolen;
1057 unsigned char sendT0;
1058 unsigned short nsend;
1059 unsigned short nr;
1060 ssize_t rc;
1061 int i;
1062
1063 DEBUGP(2, dev, "-> cmm_write(%s,%d)\n", current->comm, current->pid);
1064
1065 if (count == 0) /* according to manpage */
1066 return 0;
1067
1068 if (dev->proto == 0 && count < 4) {
1069 /* T0 must have at least 4 bytes */
1070 DEBUGP(4, dev, "T0 short write\n");
1071 return -EIO;
1072 }
1073
1074 nr = count & 0x1ff; /* max bytes to write */
1075
1076 sendT0 = dev->proto ? 0 : nr > 5 ? 0x08 : 0;
1077
1078 if (!pcmcia_dev_present(dev->p_dev) || /* device removed */
1079 test_bit(IS_CMM_ABSENT, &dev->flags))
1080 return -ENODEV;
1081
1082 if (test_bit(IS_BAD_CSUM, &dev->flags)) {
1083 DEBUGP(4, dev, "bad csum\n");
1084 return -EIO;
1085 }
1086
1087 /*
1088 * wait for atr to become valid.
1089 * note: it is important to lock this code. if we dont, the monitor
1090 * could be run between test_bit and the call to sleep on the
1091 * atr-queue. if *then* the monitor detects atr valid, it will wake up
1092 * any process on the atr-queue, *but* since we have been interrupted,
1093 * we do not yet sleep on this queue. this would result in a missed
1094 * wake_up and the calling process would sleep forever (until
1095 * interrupted). also, do *not* restore_flags before sleep_on, because
1096 * this could result in the same situation!
1097 */
1098 if (wait_event_interruptible
1099 (dev->atrq,
1100 ((filp->f_flags & O_NONBLOCK)
1101 || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags) != 0)))) {
1102 if (filp->f_flags & O_NONBLOCK)
1103 return -EAGAIN;
1104 return -ERESTARTSYS;
1105 }
1106
1107 if (test_bit(IS_ATR_VALID, &dev->flags) == 0) { /* invalid atr */
1108 DEBUGP(4, dev, "invalid ATR\n");
1109 return -EIO;
1110 }
1111
1112 /* lock io */
1113 if (wait_event_interruptible
1114 (dev->ioq,
1115 ((filp->f_flags & O_NONBLOCK)
1116 || (test_and_set_bit(LOCK_IO, (void *)&dev->flags) == 0)))) {
1117 if (filp->f_flags & O_NONBLOCK)
1118 return -EAGAIN;
1119 return -ERESTARTSYS;
1120 }
1121
1122 if (copy_from_user(dev->sbuf, buf, ((count > 512) ? 512 : count)))
1123 return -EFAULT;
1124
1125 rc = 0;
1126 dev->flags0 = inb(REG_FLAGS0(iobase));
1127 if ((dev->flags0 & 1) == 0 /* no smartcard inserted */
1128 || dev->flags0 == 0xff) { /* no cardman inserted */
1129 clear_bit(IS_ATR_VALID, &dev->flags);
1130 if (dev->flags0 & 1) {
1131 set_bit(IS_CMM_ABSENT, &dev->flags);
1132 rc = -ENODEV;
1133 } else {
1134 DEBUGP(4, dev, "IO error\n");
1135 rc = -EIO;
1136 }
1137 goto release_io;
1138 }
1139
1140 xoutb(0x80, REG_FLAGS0(iobase)); /* reset SM */
1141
1142 if (!io_detect_cm4000(iobase, dev)) {
1143 rc = -ENODEV;
1144 goto release_io;
1145 }
1146
1147 /* reflect T=0 send/read mode in flags1 */
1148 dev->flags1 |= (sendT0);
1149
1150 set_cardparameter(dev);
1151
1152 /* dummy read, reset flag procedure received */
1153 tmp = inb(REG_FLAGS1(iobase));
1154
1155 dev->flags1 = 0x20 /* T_Active */
1156 | (sendT0)
1157 | (test_bit(IS_INVREV, &dev->flags) ? 2 : 0)/* inverse parity */
1158 | (((dev->baudv - 1) & 0x0100) >> 8); /* MSB-Baud */
1159 DEBUGP(1, dev, "set dev->flags1 = 0x%.2x\n", dev->flags1);
1160 xoutb(dev->flags1, REG_FLAGS1(iobase));
1161
1162 /* xmit data */
1163 DEBUGP(4, dev, "Xmit data\n");
1164 for (i = 0; i < nr; i++) {
1165 if (i >= 256) {
1166 dev->flags1 = 0x20 /* T_Active */
1167 | (sendT0) /* SendT0 */
1168 /* inverse parity: */
1169 | (test_bit(IS_INVREV, &dev->flags) ? 2 : 0)
1170 | (((dev->baudv - 1) & 0x0100) >> 8) /* MSB-Baud */
1171 | 0x10; /* set address high */
1172 DEBUGP(4, dev, "dev->flags = 0x%.2x - set address "
1173 "high\n", dev->flags1);
1174 xoutb(dev->flags1, REG_FLAGS1(iobase));
1175 }
1176 if (test_bit(IS_INVREV, &dev->flags)) {
1177 DEBUGP(4, dev, "Apply inverse convention for 0x%.2x "
1178 "-> 0x%.2x\n", (unsigned char)dev->sbuf[i],
1179 invert_revert(dev->sbuf[i]));
1180 xoutb(i, REG_BUF_ADDR(iobase));
1181 xoutb(invert_revert(dev->sbuf[i]),
1182 REG_BUF_DATA(iobase));
1183 } else {
1184 xoutb(i, REG_BUF_ADDR(iobase));
1185 xoutb(dev->sbuf[i], REG_BUF_DATA(iobase));
1186 }
1187 }
1188 DEBUGP(4, dev, "Xmit done\n");
1189
1190 if (dev->proto == 0) {
1191 /* T=0 proto: 0 byte reply */
1192 if (nr == 4) {
1193 DEBUGP(4, dev, "T=0 assumes 0 byte reply\n");
1194 xoutb(i, REG_BUF_ADDR(iobase));
1195 if (test_bit(IS_INVREV, &dev->flags))
1196 xoutb(0xff, REG_BUF_DATA(iobase));
1197 else
1198 xoutb(0x00, REG_BUF_DATA(iobase));
1199 }
1200
1201 /* numSendBytes */
1202 if (sendT0)
1203 nsend = nr;
1204 else {
1205 if (nr == 4)
1206 nsend = 5;
1207 else {
1208 nsend = 5 + (unsigned char)dev->sbuf[4];
1209 if (dev->sbuf[4] == 0)
1210 nsend += 0x100;
1211 }
1212 }
1213 } else
1214 nsend = nr;
1215
1216 /* T0: output procedure byte */
1217 if (test_bit(IS_INVREV, &dev->flags)) {
1218 DEBUGP(4, dev, "T=0 set Procedure byte (inverse-reverse) "
1219 "0x%.2x\n", invert_revert(dev->sbuf[1]));
1220 xoutb(invert_revert(dev->sbuf[1]), REG_NUM_BYTES(iobase));
1221 } else {
1222 DEBUGP(4, dev, "T=0 set Procedure byte 0x%.2x\n", dev->sbuf[1]);
1223 xoutb(dev->sbuf[1], REG_NUM_BYTES(iobase));
1224 }
1225
1226 DEBUGP(1, dev, "set NumSendBytes = 0x%.2x\n",
1227 (unsigned char)(nsend & 0xff));
1228 xoutb((unsigned char)(nsend & 0xff), REG_NUM_SEND(iobase));
1229
1230 DEBUGP(1, dev, "Trigger CARDMAN CONTROLLER (0x%.2x)\n",
1231 0x40 /* SM_Active */
1232 | (dev->flags0 & 2 ? 0 : 4) /* power on if needed */
1233 |(dev->proto ? 0x10 : 0x08) /* T=1/T=0 */
1234 |(nsend & 0x100) >> 8 /* MSB numSendBytes */ );
1235 xoutb(0x40 /* SM_Active */
1236 | (dev->flags0 & 2 ? 0 : 4) /* power on if needed */
1237 |(dev->proto ? 0x10 : 0x08) /* T=1/T=0 */
1238 |(nsend & 0x100) >> 8, /* MSB numSendBytes */
1239 REG_FLAGS0(iobase));
1240
1241 /* wait for xmit done */
1242 if (dev->proto == 1) {
1243 DEBUGP(4, dev, "Wait for xmit done\n");
1244 for (i = 0; i < 1000; i++) {
1245 if (inb(REG_FLAGS0(iobase)) & 0x08)
1246 break;
1247 msleep_interruptible(10);
1248 }
1249 if (i == 1000) {
1250 DEBUGP(4, dev, "timeout waiting for xmit done\n");
1251 rc = -EIO;
1252 goto release_io;
1253 }
1254 }
1255
1256 /* T=1: wait for infoLen */
1257
1258 infolen = 0;
1259 if (dev->proto) {
1260 /* wait until infoLen is valid */
1261 for (i = 0; i < 6000; i++) { /* max waiting time of 1 min */
1262 io_read_num_rec_bytes(iobase, &s);
1263 if (s >= 3) {
1264 infolen = inb(REG_FLAGS1(iobase));
1265 DEBUGP(4, dev, "infolen=%d\n", infolen);
1266 break;
1267 }
1268 msleep_interruptible(10);
1269 }
1270 if (i == 6000) {
1271 DEBUGP(4, dev, "timeout waiting for infoLen\n");
1272 rc = -EIO;
1273 goto release_io;
1274 }
1275 } else
1276 clear_bit(IS_PROCBYTE_PRESENT, &dev->flags);
1277
1278 /* numRecBytes | bit9 of numRecytes */
1279 io_read_num_rec_bytes(iobase, &dev->rlen);
1280 for (i = 0; i < 600; i++) { /* max waiting time of 2 sec */
1281 if (dev->proto) {
1282 if (dev->rlen >= infolen + 4)
1283 break;
1284 }
1285 msleep_interruptible(10);
1286 /* numRecBytes | bit9 of numRecytes */
1287 io_read_num_rec_bytes(iobase, &s);
1288 if (s > dev->rlen) {
1289 DEBUGP(1, dev, "NumRecBytes inc (reset timeout)\n");
1290 i = 0; /* reset timeout */
1291 dev->rlen = s;
1292 }
1293 /* T=0: we are done when numRecBytes doesn't
1294 * increment any more and NoProcedureByte
1295 * is set and numRecBytes == bytes sent + 6
1296 * (header bytes + data + 1 for sw2)
1297 * except when the card replies an error
1298 * which means, no data will be sent back.
1299 */
1300 else if (dev->proto == 0) {
1301 if ((inb(REG_BUF_ADDR(iobase)) & 0x80)) {
1302 /* no procedure byte received since last read */
1303 DEBUGP(1, dev, "NoProcedure byte set\n");
1304 /* i=0; */
1305 } else {
1306 /* procedure byte received since last read */
1307 DEBUGP(1, dev, "NoProcedure byte unset "
1308 "(reset timeout)\n");
1309 dev->procbyte = inb(REG_FLAGS1(iobase));
1310 DEBUGP(1, dev, "Read procedure byte 0x%.2x\n",
1311 dev->procbyte);
1312 i = 0; /* resettimeout */
1313 }
1314 if (inb(REG_FLAGS0(iobase)) & 0x08) {
1315 DEBUGP(1, dev, "T0Done flag (read reply)\n");
1316 break;
1317 }
1318 }
1319 if (dev->proto)
1320 infolen = inb(REG_FLAGS1(iobase));
1321 }
1322 if (i == 600) {
1323 DEBUGP(1, dev, "timeout waiting for numRecBytes\n");
1324 rc = -EIO;
1325 goto release_io;
1326 } else {
1327 if (dev->proto == 0) {
1328 DEBUGP(1, dev, "Wait for T0Done bit to be set\n");
1329 for (i = 0; i < 1000; i++) {
1330 if (inb(REG_FLAGS0(iobase)) & 0x08)
1331 break;
1332 msleep_interruptible(10);
1333 }
1334 if (i == 1000) {
1335 DEBUGP(1, dev, "timeout waiting for T0Done\n");
1336 rc = -EIO;
1337 goto release_io;
1338 }
1339
1340 dev->procbyte = inb(REG_FLAGS1(iobase));
1341 DEBUGP(4, dev, "Read procedure byte 0x%.2x\n",
1342 dev->procbyte);
1343
1344 io_read_num_rec_bytes(iobase, &dev->rlen);
1345 DEBUGP(4, dev, "Read NumRecBytes = %i\n", dev->rlen);
1346
1347 }
1348 }
1349 /* T=1: read offset=zero, T=0: read offset=after challenge */
1350 dev->rpos = dev->proto ? 0 : nr == 4 ? 5 : nr > dev->rlen ? 5 : nr;
1351 DEBUGP(4, dev, "dev->rlen = %i, dev->rpos = %i, nr = %i\n",
1352 dev->rlen, dev->rpos, nr);
1353
1354 release_io:
1355 DEBUGP(4, dev, "Reset SM\n");
1356 xoutb(0x80, REG_FLAGS0(iobase)); /* reset SM */
1357
1358 if (rc < 0) {
1359 DEBUGP(4, dev, "Write failed but clear T_Active\n");
1360 dev->flags1 &= 0xdf;
1361 xoutb(dev->flags1, REG_FLAGS1(iobase));
1362 }
1363
1364 clear_bit(LOCK_IO, &dev->flags);
1365 wake_up_interruptible(&dev->ioq);
1366 wake_up_interruptible(&dev->readq); /* tell read we have data */
1367
1368 /* ITSEC E2: clear write buffer */
1369 memset((char *)dev->sbuf, 0, 512);
1370
1371 /* return error or actually written bytes */
1372 DEBUGP(2, dev, "<- cmm_write\n");
1373 return rc < 0 ? rc : nr;
1374 }
1375
start_monitor(struct cm4000_dev * dev)1376 static void start_monitor(struct cm4000_dev *dev)
1377 {
1378 DEBUGP(3, dev, "-> start_monitor\n");
1379 if (!dev->monitor_running) {
1380 DEBUGP(5, dev, "create, init and add timer\n");
1381 setup_timer(&dev->timer, monitor_card, (unsigned long)dev);
1382 dev->monitor_running = 1;
1383 mod_timer(&dev->timer, jiffies);
1384 } else
1385 DEBUGP(5, dev, "monitor already running\n");
1386 DEBUGP(3, dev, "<- start_monitor\n");
1387 }
1388
stop_monitor(struct cm4000_dev * dev)1389 static void stop_monitor(struct cm4000_dev *dev)
1390 {
1391 DEBUGP(3, dev, "-> stop_monitor\n");
1392 if (dev->monitor_running) {
1393 DEBUGP(5, dev, "stopping monitor\n");
1394 terminate_monitor(dev);
1395 /* reset monitor SM */
1396 clear_bit(IS_ATR_VALID, &dev->flags);
1397 clear_bit(IS_ATR_PRESENT, &dev->flags);
1398 } else
1399 DEBUGP(5, dev, "monitor already stopped\n");
1400 DEBUGP(3, dev, "<- stop_monitor\n");
1401 }
1402
cmm_ioctl(struct file * filp,unsigned int cmd,unsigned long arg)1403 static long cmm_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
1404 {
1405 struct cm4000_dev *dev = filp->private_data;
1406 unsigned int iobase = dev->p_dev->resource[0]->start;
1407 struct inode *inode = file_inode(filp);
1408 struct pcmcia_device *link;
1409 int size;
1410 int rc;
1411 void __user *argp = (void __user *)arg;
1412 #ifdef CM4000_DEBUG
1413 char *ioctl_names[CM_IOC_MAXNR + 1] = {
1414 [_IOC_NR(CM_IOCGSTATUS)] "CM_IOCGSTATUS",
1415 [_IOC_NR(CM_IOCGATR)] "CM_IOCGATR",
1416 [_IOC_NR(CM_IOCARDOFF)] "CM_IOCARDOFF",
1417 [_IOC_NR(CM_IOCSPTS)] "CM_IOCSPTS",
1418 [_IOC_NR(CM_IOSDBGLVL)] "CM4000_DBGLVL",
1419 };
1420 DEBUGP(3, dev, "cmm_ioctl(device=%d.%d) %s\n", imajor(inode),
1421 iminor(inode), ioctl_names[_IOC_NR(cmd)]);
1422 #endif
1423
1424 mutex_lock(&cmm_mutex);
1425 rc = -ENODEV;
1426 link = dev_table[iminor(inode)];
1427 if (!pcmcia_dev_present(link)) {
1428 DEBUGP(4, dev, "DEV_OK false\n");
1429 goto out;
1430 }
1431
1432 if (test_bit(IS_CMM_ABSENT, &dev->flags)) {
1433 DEBUGP(4, dev, "CMM_ABSENT flag set\n");
1434 goto out;
1435 }
1436 rc = -EINVAL;
1437
1438 if (_IOC_TYPE(cmd) != CM_IOC_MAGIC) {
1439 DEBUGP(4, dev, "ioctype mismatch\n");
1440 goto out;
1441 }
1442 if (_IOC_NR(cmd) > CM_IOC_MAXNR) {
1443 DEBUGP(4, dev, "iocnr mismatch\n");
1444 goto out;
1445 }
1446 size = _IOC_SIZE(cmd);
1447 rc = -EFAULT;
1448 DEBUGP(4, dev, "iocdir=%.4x iocr=%.4x iocw=%.4x iocsize=%d cmd=%.4x\n",
1449 _IOC_DIR(cmd), _IOC_READ, _IOC_WRITE, size, cmd);
1450
1451 if (_IOC_DIR(cmd) & _IOC_READ) {
1452 if (!access_ok(VERIFY_WRITE, argp, size))
1453 goto out;
1454 }
1455 if (_IOC_DIR(cmd) & _IOC_WRITE) {
1456 if (!access_ok(VERIFY_READ, argp, size))
1457 goto out;
1458 }
1459 rc = 0;
1460
1461 switch (cmd) {
1462 case CM_IOCGSTATUS:
1463 DEBUGP(4, dev, " ... in CM_IOCGSTATUS\n");
1464 {
1465 int status;
1466
1467 /* clear other bits, but leave inserted & powered as
1468 * they are */
1469 status = dev->flags0 & 3;
1470 if (test_bit(IS_ATR_PRESENT, &dev->flags))
1471 status |= CM_ATR_PRESENT;
1472 if (test_bit(IS_ATR_VALID, &dev->flags))
1473 status |= CM_ATR_VALID;
1474 if (test_bit(IS_CMM_ABSENT, &dev->flags))
1475 status |= CM_NO_READER;
1476 if (test_bit(IS_BAD_CARD, &dev->flags))
1477 status |= CM_BAD_CARD;
1478 if (copy_to_user(argp, &status, sizeof(int)))
1479 rc = -EFAULT;
1480 }
1481 break;
1482 case CM_IOCGATR:
1483 DEBUGP(4, dev, "... in CM_IOCGATR\n");
1484 {
1485 struct atreq __user *atreq = argp;
1486 int tmp;
1487 /* allow nonblocking io and being interrupted */
1488 if (wait_event_interruptible
1489 (dev->atrq,
1490 ((filp->f_flags & O_NONBLOCK)
1491 || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags)
1492 != 0)))) {
1493 if (filp->f_flags & O_NONBLOCK)
1494 rc = -EAGAIN;
1495 else
1496 rc = -ERESTARTSYS;
1497 break;
1498 }
1499
1500 rc = -EFAULT;
1501 if (test_bit(IS_ATR_VALID, &dev->flags) == 0) {
1502 tmp = -1;
1503 if (copy_to_user(&(atreq->atr_len), &tmp,
1504 sizeof(int)))
1505 break;
1506 } else {
1507 if (copy_to_user(atreq->atr, dev->atr,
1508 dev->atr_len))
1509 break;
1510
1511 tmp = dev->atr_len;
1512 if (copy_to_user(&(atreq->atr_len), &tmp, sizeof(int)))
1513 break;
1514 }
1515 rc = 0;
1516 break;
1517 }
1518 case CM_IOCARDOFF:
1519
1520 #ifdef CM4000_DEBUG
1521 DEBUGP(4, dev, "... in CM_IOCARDOFF\n");
1522 if (dev->flags0 & 0x01) {
1523 DEBUGP(4, dev, " Card inserted\n");
1524 } else {
1525 DEBUGP(2, dev, " No card inserted\n");
1526 }
1527 if (dev->flags0 & 0x02) {
1528 DEBUGP(4, dev, " Card powered\n");
1529 } else {
1530 DEBUGP(2, dev, " Card not powered\n");
1531 }
1532 #endif
1533
1534 /* is a card inserted and powered? */
1535 if ((dev->flags0 & 0x01) && (dev->flags0 & 0x02)) {
1536
1537 /* get IO lock */
1538 if (wait_event_interruptible
1539 (dev->ioq,
1540 ((filp->f_flags & O_NONBLOCK)
1541 || (test_and_set_bit(LOCK_IO, (void *)&dev->flags)
1542 == 0)))) {
1543 if (filp->f_flags & O_NONBLOCK)
1544 rc = -EAGAIN;
1545 else
1546 rc = -ERESTARTSYS;
1547 break;
1548 }
1549 /* Set Flags0 = 0x42 */
1550 DEBUGP(4, dev, "Set Flags0=0x42 \n");
1551 xoutb(0x42, REG_FLAGS0(iobase));
1552 clear_bit(IS_ATR_PRESENT, &dev->flags);
1553 clear_bit(IS_ATR_VALID, &dev->flags);
1554 dev->mstate = M_CARDOFF;
1555 clear_bit(LOCK_IO, &dev->flags);
1556 if (wait_event_interruptible
1557 (dev->atrq,
1558 ((filp->f_flags & O_NONBLOCK)
1559 || (test_bit(IS_ATR_VALID, (void *)&dev->flags) !=
1560 0)))) {
1561 if (filp->f_flags & O_NONBLOCK)
1562 rc = -EAGAIN;
1563 else
1564 rc = -ERESTARTSYS;
1565 break;
1566 }
1567 }
1568 /* release lock */
1569 clear_bit(LOCK_IO, &dev->flags);
1570 wake_up_interruptible(&dev->ioq);
1571
1572 rc = 0;
1573 break;
1574 case CM_IOCSPTS:
1575 {
1576 struct ptsreq krnptsreq;
1577
1578 if (copy_from_user(&krnptsreq, argp,
1579 sizeof(struct ptsreq))) {
1580 rc = -EFAULT;
1581 break;
1582 }
1583
1584 rc = 0;
1585 DEBUGP(4, dev, "... in CM_IOCSPTS\n");
1586 /* wait for ATR to get valid */
1587 if (wait_event_interruptible
1588 (dev->atrq,
1589 ((filp->f_flags & O_NONBLOCK)
1590 || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags)
1591 != 0)))) {
1592 if (filp->f_flags & O_NONBLOCK)
1593 rc = -EAGAIN;
1594 else
1595 rc = -ERESTARTSYS;
1596 break;
1597 }
1598 /* get IO lock */
1599 if (wait_event_interruptible
1600 (dev->ioq,
1601 ((filp->f_flags & O_NONBLOCK)
1602 || (test_and_set_bit(LOCK_IO, (void *)&dev->flags)
1603 == 0)))) {
1604 if (filp->f_flags & O_NONBLOCK)
1605 rc = -EAGAIN;
1606 else
1607 rc = -ERESTARTSYS;
1608 break;
1609 }
1610
1611 if ((rc = set_protocol(dev, &krnptsreq)) != 0) {
1612 /* auto power_on again */
1613 dev->mstate = M_FETCH_ATR;
1614 clear_bit(IS_ATR_VALID, &dev->flags);
1615 }
1616 /* release lock */
1617 clear_bit(LOCK_IO, &dev->flags);
1618 wake_up_interruptible(&dev->ioq);
1619
1620 }
1621 break;
1622 #ifdef CM4000_DEBUG
1623 case CM_IOSDBGLVL:
1624 rc = -ENOTTY;
1625 break;
1626 #endif
1627 default:
1628 DEBUGP(4, dev, "... in default (unknown IOCTL code)\n");
1629 rc = -ENOTTY;
1630 }
1631 out:
1632 mutex_unlock(&cmm_mutex);
1633 return rc;
1634 }
1635
cmm_open(struct inode * inode,struct file * filp)1636 static int cmm_open(struct inode *inode, struct file *filp)
1637 {
1638 struct cm4000_dev *dev;
1639 struct pcmcia_device *link;
1640 int minor = iminor(inode);
1641 int ret;
1642
1643 if (minor >= CM4000_MAX_DEV)
1644 return -ENODEV;
1645
1646 mutex_lock(&cmm_mutex);
1647 link = dev_table[minor];
1648 if (link == NULL || !pcmcia_dev_present(link)) {
1649 ret = -ENODEV;
1650 goto out;
1651 }
1652
1653 if (link->open) {
1654 ret = -EBUSY;
1655 goto out;
1656 }
1657
1658 dev = link->priv;
1659 filp->private_data = dev;
1660
1661 DEBUGP(2, dev, "-> cmm_open(device=%d.%d process=%s,%d)\n",
1662 imajor(inode), minor, current->comm, current->pid);
1663
1664 /* init device variables, they may be "polluted" after close
1665 * or, the device may never have been closed (i.e. open failed)
1666 */
1667
1668 ZERO_DEV(dev);
1669
1670 /* opening will always block since the
1671 * monitor will be started by open, which
1672 * means we have to wait for ATR becoming
1673 * valid = block until valid (or card
1674 * inserted)
1675 */
1676 if (filp->f_flags & O_NONBLOCK) {
1677 ret = -EAGAIN;
1678 goto out;
1679 }
1680
1681 dev->mdelay = T_50MSEC;
1682
1683 /* start monitoring the cardstatus */
1684 start_monitor(dev);
1685
1686 link->open = 1; /* only one open per device */
1687
1688 DEBUGP(2, dev, "<- cmm_open\n");
1689 ret = nonseekable_open(inode, filp);
1690 out:
1691 mutex_unlock(&cmm_mutex);
1692 return ret;
1693 }
1694
cmm_close(struct inode * inode,struct file * filp)1695 static int cmm_close(struct inode *inode, struct file *filp)
1696 {
1697 struct cm4000_dev *dev;
1698 struct pcmcia_device *link;
1699 int minor = iminor(inode);
1700
1701 if (minor >= CM4000_MAX_DEV)
1702 return -ENODEV;
1703
1704 link = dev_table[minor];
1705 if (link == NULL)
1706 return -ENODEV;
1707
1708 dev = link->priv;
1709
1710 DEBUGP(2, dev, "-> cmm_close(maj/min=%d.%d)\n",
1711 imajor(inode), minor);
1712
1713 stop_monitor(dev);
1714
1715 ZERO_DEV(dev);
1716
1717 link->open = 0; /* only one open per device */
1718 wake_up(&dev->devq); /* socket removed? */
1719
1720 DEBUGP(2, dev, "cmm_close\n");
1721 return 0;
1722 }
1723
cmm_cm4000_release(struct pcmcia_device * link)1724 static void cmm_cm4000_release(struct pcmcia_device * link)
1725 {
1726 struct cm4000_dev *dev = link->priv;
1727
1728 /* dont terminate the monitor, rather rely on
1729 * close doing that for us.
1730 */
1731 DEBUGP(3, dev, "-> cmm_cm4000_release\n");
1732 while (link->open) {
1733 printk(KERN_INFO MODULE_NAME ": delaying release until "
1734 "process has terminated\n");
1735 /* note: don't interrupt us:
1736 * close the applications which own
1737 * the devices _first_ !
1738 */
1739 wait_event(dev->devq, (link->open == 0));
1740 }
1741 /* dev->devq=NULL; this cannot be zeroed earlier */
1742 DEBUGP(3, dev, "<- cmm_cm4000_release\n");
1743 return;
1744 }
1745
1746 /*==== Interface to PCMCIA Layer =======================================*/
1747
cm4000_config_check(struct pcmcia_device * p_dev,void * priv_data)1748 static int cm4000_config_check(struct pcmcia_device *p_dev, void *priv_data)
1749 {
1750 return pcmcia_request_io(p_dev);
1751 }
1752
cm4000_config(struct pcmcia_device * link,int devno)1753 static int cm4000_config(struct pcmcia_device * link, int devno)
1754 {
1755 struct cm4000_dev *dev;
1756
1757 link->config_flags |= CONF_AUTO_SET_IO;
1758
1759 /* read the config-tuples */
1760 if (pcmcia_loop_config(link, cm4000_config_check, NULL))
1761 goto cs_release;
1762
1763 if (pcmcia_enable_device(link))
1764 goto cs_release;
1765
1766 dev = link->priv;
1767
1768 return 0;
1769
1770 cs_release:
1771 cm4000_release(link);
1772 return -ENODEV;
1773 }
1774
cm4000_suspend(struct pcmcia_device * link)1775 static int cm4000_suspend(struct pcmcia_device *link)
1776 {
1777 struct cm4000_dev *dev;
1778
1779 dev = link->priv;
1780 stop_monitor(dev);
1781
1782 return 0;
1783 }
1784
cm4000_resume(struct pcmcia_device * link)1785 static int cm4000_resume(struct pcmcia_device *link)
1786 {
1787 struct cm4000_dev *dev;
1788
1789 dev = link->priv;
1790 if (link->open)
1791 start_monitor(dev);
1792
1793 return 0;
1794 }
1795
cm4000_release(struct pcmcia_device * link)1796 static void cm4000_release(struct pcmcia_device *link)
1797 {
1798 cmm_cm4000_release(link); /* delay release until device closed */
1799 pcmcia_disable_device(link);
1800 }
1801
cm4000_probe(struct pcmcia_device * link)1802 static int cm4000_probe(struct pcmcia_device *link)
1803 {
1804 struct cm4000_dev *dev;
1805 int i, ret;
1806
1807 for (i = 0; i < CM4000_MAX_DEV; i++)
1808 if (dev_table[i] == NULL)
1809 break;
1810
1811 if (i == CM4000_MAX_DEV) {
1812 printk(KERN_NOTICE MODULE_NAME ": all devices in use\n");
1813 return -ENODEV;
1814 }
1815
1816 /* create a new cm4000_cs device */
1817 dev = kzalloc(sizeof(struct cm4000_dev), GFP_KERNEL);
1818 if (dev == NULL)
1819 return -ENOMEM;
1820
1821 dev->p_dev = link;
1822 link->priv = dev;
1823 dev_table[i] = link;
1824
1825 init_waitqueue_head(&dev->devq);
1826 init_waitqueue_head(&dev->ioq);
1827 init_waitqueue_head(&dev->atrq);
1828 init_waitqueue_head(&dev->readq);
1829
1830 ret = cm4000_config(link, i);
1831 if (ret) {
1832 dev_table[i] = NULL;
1833 kfree(dev);
1834 return ret;
1835 }
1836
1837 device_create(cmm_class, NULL, MKDEV(major, i), NULL, "cmm%d", i);
1838
1839 return 0;
1840 }
1841
cm4000_detach(struct pcmcia_device * link)1842 static void cm4000_detach(struct pcmcia_device *link)
1843 {
1844 struct cm4000_dev *dev = link->priv;
1845 int devno;
1846
1847 /* find device */
1848 for (devno = 0; devno < CM4000_MAX_DEV; devno++)
1849 if (dev_table[devno] == link)
1850 break;
1851 if (devno == CM4000_MAX_DEV)
1852 return;
1853
1854 stop_monitor(dev);
1855
1856 cm4000_release(link);
1857
1858 dev_table[devno] = NULL;
1859 kfree(dev);
1860
1861 device_destroy(cmm_class, MKDEV(major, devno));
1862
1863 return;
1864 }
1865
1866 static const struct file_operations cm4000_fops = {
1867 .owner = THIS_MODULE,
1868 .read = cmm_read,
1869 .write = cmm_write,
1870 .unlocked_ioctl = cmm_ioctl,
1871 .open = cmm_open,
1872 .release= cmm_close,
1873 .llseek = no_llseek,
1874 };
1875
1876 static const struct pcmcia_device_id cm4000_ids[] = {
1877 PCMCIA_DEVICE_MANF_CARD(0x0223, 0x0002),
1878 PCMCIA_DEVICE_PROD_ID12("CardMan", "4000", 0x2FB368CA, 0xA2BD8C39),
1879 PCMCIA_DEVICE_NULL,
1880 };
1881 MODULE_DEVICE_TABLE(pcmcia, cm4000_ids);
1882
1883 static struct pcmcia_driver cm4000_driver = {
1884 .owner = THIS_MODULE,
1885 .name = "cm4000_cs",
1886 .probe = cm4000_probe,
1887 .remove = cm4000_detach,
1888 .suspend = cm4000_suspend,
1889 .resume = cm4000_resume,
1890 .id_table = cm4000_ids,
1891 };
1892
cmm_init(void)1893 static int __init cmm_init(void)
1894 {
1895 int rc;
1896
1897 cmm_class = class_create(THIS_MODULE, "cardman_4000");
1898 if (IS_ERR(cmm_class))
1899 return PTR_ERR(cmm_class);
1900
1901 major = register_chrdev(0, DEVICE_NAME, &cm4000_fops);
1902 if (major < 0) {
1903 printk(KERN_WARNING MODULE_NAME
1904 ": could not get major number\n");
1905 class_destroy(cmm_class);
1906 return major;
1907 }
1908
1909 rc = pcmcia_register_driver(&cm4000_driver);
1910 if (rc < 0) {
1911 unregister_chrdev(major, DEVICE_NAME);
1912 class_destroy(cmm_class);
1913 return rc;
1914 }
1915
1916 return 0;
1917 }
1918
cmm_exit(void)1919 static void __exit cmm_exit(void)
1920 {
1921 pcmcia_unregister_driver(&cm4000_driver);
1922 unregister_chrdev(major, DEVICE_NAME);
1923 class_destroy(cmm_class);
1924 };
1925
1926 module_init(cmm_init);
1927 module_exit(cmm_exit);
1928 MODULE_LICENSE("Dual BSD/GPL");
1929