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Linux 2.6.21.1
[linux/fpc-iii.git] / drivers / char / pcmcia / cm4000_cs.c
blobe91b43a014b09edf096ce80e8d40ec2f1fee4880
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 /* #define PCMCIA_DEBUG 6 */
27
28 #include <linux/kernel.h>
29 #include <linux/module.h>
30 #include <linux/slab.h>
31 #include <linux/init.h>
32 #include <linux/fs.h>
33 #include <linux/delay.h>
34 #include <asm/uaccess.h>
35 #include <asm/io.h>
36
37 #include <pcmcia/cs_types.h>
38 #include <pcmcia/cs.h>
39 #include <pcmcia/cistpl.h>
40 #include <pcmcia/cisreg.h>
41 #include <pcmcia/ciscode.h>
42 #include <pcmcia/ds.h>
43
44 #include <linux/cm4000_cs.h>
45
46 /* #define ATR_CSUM */
47
48 #ifdef PCMCIA_DEBUG
49 #define reader_to_dev(x) (&handle_to_dev(x->p_dev->handle))
50 static int pc_debug = PCMCIA_DEBUG;
51 module_param(pc_debug, int, 0600);
52 #define DEBUGP(n, rdr, x, args...) do { \
53 if (pc_debug >= (n)) \
54 dev_printk(KERN_DEBUG, reader_to_dev(rdr), "%s:" x, \
55 __FUNCTION__ , ## args); \
56 } while (0)
57 #else
58 #define DEBUGP(n, rdr, x, args...)
59 #endif
60 static char *version = "cm4000_cs.c v2.4.0gm6 - All bugs added by Harald Welte";
61
62 #define T_1SEC (HZ)
63 #define T_10MSEC msecs_to_jiffies(10)
64 #define T_20MSEC msecs_to_jiffies(20)
65 #define T_40MSEC msecs_to_jiffies(40)
66 #define T_50MSEC msecs_to_jiffies(50)
67 #define T_100MSEC msecs_to_jiffies(100)
68 #define T_500MSEC msecs_to_jiffies(500)
69
70 static void cm4000_release(struct pcmcia_device *link);
71
72 static int major; /* major number we get from the kernel */
73
74 /* note: the first state has to have number 0 always */
75
76 #define M_FETCH_ATR 0
77 #define M_TIMEOUT_WAIT 1
78 #define M_READ_ATR_LEN 2
79 #define M_READ_ATR 3
80 #define M_ATR_PRESENT 4
81 #define M_BAD_CARD 5
82 #define M_CARDOFF 6
83
84 #define LOCK_IO 0
85 #define LOCK_MONITOR 1
86
87 #define IS_AUTOPPS_ACT 6
88 #define IS_PROCBYTE_PRESENT 7
89 #define IS_INVREV 8
90 #define IS_ANY_T0 9
91 #define IS_ANY_T1 10
92 #define IS_ATR_PRESENT 11
93 #define IS_ATR_VALID 12
94 #define IS_CMM_ABSENT 13
95 #define IS_BAD_LENGTH 14
96 #define IS_BAD_CSUM 15
97 #define IS_BAD_CARD 16
98
99 #define REG_FLAGS0(x) (x + 0)
100 #define REG_FLAGS1(x) (x + 1)
101 #define REG_NUM_BYTES(x) (x + 2)
102 #define REG_BUF_ADDR(x) (x + 3)
103 #define REG_BUF_DATA(x) (x + 4)
104 #define REG_NUM_SEND(x) (x + 5)
105 #define REG_BAUDRATE(x) (x + 6)
106 #define REG_STOPBITS(x) (x + 7)
107
108 struct cm4000_dev {
109 struct pcmcia_device *p_dev;
110 dev_node_t node; /* OS node (major,minor) */
111
112 unsigned char atr[MAX_ATR];
113 unsigned char rbuf[512];
114 unsigned char sbuf[512];
115
116 wait_queue_head_t devq; /* when removing cardman must not be
117 zeroed! */
118
119 wait_queue_head_t ioq; /* if IO is locked, wait on this Q */
120 wait_queue_head_t atrq; /* wait for ATR valid */
121 wait_queue_head_t readq; /* used by write to wake blk.read */
122
123 /* warning: do not move this fields.
124 * initialising to zero depends on it - see ZERO_DEV below. */
125 unsigned char atr_csum;
126 unsigned char atr_len_retry;
127 unsigned short atr_len;
128 unsigned short rlen; /* bytes avail. after write */
129 unsigned short rpos; /* latest read pos. write zeroes */
130 unsigned char procbyte; /* T=0 procedure byte */
131 unsigned char mstate; /* state of card monitor */
132 unsigned char cwarn; /* slow down warning */
133 unsigned char flags0; /* cardman IO-flags 0 */
134 unsigned char flags1; /* cardman IO-flags 1 */
135 unsigned int mdelay; /* variable monitor speeds, in jiffies */
136
137 unsigned int baudv; /* baud value for speed */
138 unsigned char ta1;
139 unsigned char proto; /* T=0, T=1, ... */
140 unsigned long flags; /* lock+flags (MONITOR,IO,ATR) * for concurrent
141 access */
142
143 unsigned char pts[4];
144
145 struct timer_list timer; /* used to keep monitor running */
146 int monitor_running;
147 };
148
149 #define ZERO_DEV(dev) \
150 memset(&dev->atr_csum,0, \
151 sizeof(struct cm4000_dev) - \
152 offsetof(struct cm4000_dev, atr_csum))
153
154 static struct pcmcia_device *dev_table[CM4000_MAX_DEV];
155 static struct class *cmm_class;
156
157 /* This table doesn't use spaces after the comma between fields and thus
158 * violates CodingStyle. However, I don't really think wrapping it around will
159 * make it any clearer to read -HW */
160 static unsigned char fi_di_table[10][14] = {
161 /*FI 00 01 02 03 04 05 06 07 08 09 10 11 12 13 */
162 /*DI */
163 /* 0 */ {0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11},
164 /* 1 */ {0x01,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x91,0x11,0x11,0x11,0x11},
165 /* 2 */ {0x02,0x12,0x22,0x32,0x11,0x11,0x11,0x11,0x11,0x92,0xA2,0xB2,0x11,0x11},
166 /* 3 */ {0x03,0x13,0x23,0x33,0x43,0x53,0x63,0x11,0x11,0x93,0xA3,0xB3,0xC3,0xD3},
167 /* 4 */ {0x04,0x14,0x24,0x34,0x44,0x54,0x64,0x11,0x11,0x94,0xA4,0xB4,0xC4,0xD4},
168 /* 5 */ {0x00,0x15,0x25,0x35,0x45,0x55,0x65,0x11,0x11,0x95,0xA5,0xB5,0xC5,0xD5},
169 /* 6 */ {0x06,0x16,0x26,0x36,0x46,0x56,0x66,0x11,0x11,0x96,0xA6,0xB6,0xC6,0xD6},
170 /* 7 */ {0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11},
171 /* 8 */ {0x08,0x11,0x28,0x38,0x48,0x58,0x68,0x11,0x11,0x98,0xA8,0xB8,0xC8,0xD8},
172 /* 9 */ {0x09,0x19,0x29,0x39,0x49,0x59,0x69,0x11,0x11,0x99,0xA9,0xB9,0xC9,0xD9}
173 };
174
175 #ifndef PCMCIA_DEBUG
176 #define xoutb outb
177 #define xinb inb
178 #else
179 static inline void xoutb(unsigned char val, unsigned short port)
180 {
181 if (pc_debug >= 7)
182 printk(KERN_DEBUG "outb(val=%.2x,port=%.4x)\n", val, port);
183 outb(val, port);
184 }
185 static inline unsigned char xinb(unsigned short port)
186 {
187 unsigned char val;
188
189 val = inb(port);
190 if (pc_debug >= 7)
191 printk(KERN_DEBUG "%.2x=inb(%.4x)\n", val, port);
192
193 return val;
194 }
195 #endif
196
197 #define b_0000 15
198 #define b_0001 14
199 #define b_0010 13
200 #define b_0011 12
201 #define b_0100 11
202 #define b_0101 10
203 #define b_0110 9
204 #define b_0111 8
205 #define b_1000 7
206 #define b_1001 6
207 #define b_1010 5
208 #define b_1011 4
209 #define b_1100 3
210 #define b_1101 2
211 #define b_1110 1
212 #define b_1111 0
213
214 static unsigned char irtab[16] = {
215 b_0000, b_1000, b_0100, b_1100,
216 b_0010, b_1010, b_0110, b_1110,
217 b_0001, b_1001, b_0101, b_1101,
218 b_0011, b_1011, b_0111, b_1111
219 };
220
221 static void str_invert_revert(unsigned char *b, int len)
222 {
223 int i;
224
225 for (i = 0; i < len; i++)
226 b[i] = (irtab[b[i] & 0x0f] << 4) | irtab[b[i] >> 4];
227 }
228
229 static unsigned char invert_revert(unsigned char ch)
230 {
231 return (irtab[ch & 0x0f] << 4) | irtab[ch >> 4];
232 }
233
234 #define ATRLENCK(dev,pos) \
235 if (pos>=dev->atr_len || pos>=MAX_ATR) \
236 goto return_0;
237
238 static unsigned int calc_baudv(unsigned char fidi)
239 {
240 unsigned int wcrcf, wbrcf, fi_rfu, di_rfu;
241
242 fi_rfu = 372;
243 di_rfu = 1;
244
245 /* FI */
246 switch ((fidi >> 4) & 0x0F) {
247 case 0x00:
248 wcrcf = 372;
249 break;
250 case 0x01:
251 wcrcf = 372;
252 break;
253 case 0x02:
254 wcrcf = 558;
255 break;
256 case 0x03:
257 wcrcf = 744;
258 break;
259 case 0x04:
260 wcrcf = 1116;
261 break;
262 case 0x05:
263 wcrcf = 1488;
264 break;
265 case 0x06:
266 wcrcf = 1860;
267 break;
268 case 0x07:
269 wcrcf = fi_rfu;
270 break;
271 case 0x08:
272 wcrcf = fi_rfu;
273 break;
274 case 0x09:
275 wcrcf = 512;
276 break;
277 case 0x0A:
278 wcrcf = 768;
279 break;
280 case 0x0B:
281 wcrcf = 1024;
282 break;
283 case 0x0C:
284 wcrcf = 1536;
285 break;
286 case 0x0D:
287 wcrcf = 2048;
288 break;
289 default:
290 wcrcf = fi_rfu;
291 break;
292 }
293
294 /* DI */
295 switch (fidi & 0x0F) {
296 case 0x00:
297 wbrcf = di_rfu;
298 break;
299 case 0x01:
300 wbrcf = 1;
301 break;
302 case 0x02:
303 wbrcf = 2;
304 break;
305 case 0x03:
306 wbrcf = 4;
307 break;
308 case 0x04:
309 wbrcf = 8;
310 break;
311 case 0x05:
312 wbrcf = 16;
313 break;
314 case 0x06:
315 wbrcf = 32;
316 break;
317 case 0x07:
318 wbrcf = di_rfu;
319 break;
320 case 0x08:
321 wbrcf = 12;
322 break;
323 case 0x09:
324 wbrcf = 20;
325 break;
326 default:
327 wbrcf = di_rfu;
328 break;
329 }
330
331 return (wcrcf / wbrcf);
332 }
333
334 static unsigned short io_read_num_rec_bytes(ioaddr_t iobase, unsigned short *s)
335 {
336 unsigned short tmp;
337
338 tmp = *s = 0;
339 do {
340 *s = tmp;
341 tmp = inb(REG_NUM_BYTES(iobase)) |
342 (inb(REG_FLAGS0(iobase)) & 4 ? 0x100 : 0);
343 } while (tmp != *s);
344
345 return *s;
346 }
347
348 static int parse_atr(struct cm4000_dev *dev)
349 {
350 unsigned char any_t1, any_t0;
351 unsigned char ch, ifno;
352 int ix, done;
353
354 DEBUGP(3, dev, "-> parse_atr: dev->atr_len = %i\n", dev->atr_len);
355
356 if (dev->atr_len < 3) {
357 DEBUGP(5, dev, "parse_atr: atr_len < 3\n");
358 return 0;
359 }
360
361 if (dev->atr[0] == 0x3f)
362 set_bit(IS_INVREV, &dev->flags);
363 else
364 clear_bit(IS_INVREV, &dev->flags);
365 ix = 1;
366 ifno = 1;
367 ch = dev->atr[1];
368 dev->proto = 0; /* XXX PROTO */
369 any_t1 = any_t0 = done = 0;
370 dev->ta1 = 0x11; /* defaults to 9600 baud */
371 do {
372 if (ifno == 1 && (ch & 0x10)) {
373 /* read first interface byte and TA1 is present */
374 dev->ta1 = dev->atr[2];
375 DEBUGP(5, dev, "Card says FiDi is 0x%.2x\n", dev->ta1);
376 ifno++;
377 } else if ((ifno == 2) && (ch & 0x10)) { /* TA(2) */
378 dev->ta1 = 0x11;
379 ifno++;
380 }
381
382 DEBUGP(5, dev, "Yi=%.2x\n", ch & 0xf0);
383 ix += ((ch & 0x10) >> 4) /* no of int.face chars */
384 +((ch & 0x20) >> 5)
385 + ((ch & 0x40) >> 6)
386 + ((ch & 0x80) >> 7);
387 /* ATRLENCK(dev,ix); */
388 if (ch & 0x80) { /* TDi */
389 ch = dev->atr[ix];
390 if ((ch & 0x0f)) {
391 any_t1 = 1;
392 DEBUGP(5, dev, "card is capable of T=1\n");
393 } else {
394 any_t0 = 1;
395 DEBUGP(5, dev, "card is capable of T=0\n");
396 }
397 } else
398 done = 1;
399 } while (!done);
400
401 DEBUGP(5, dev, "ix=%d noHist=%d any_t1=%d\n",
402 ix, dev->atr[1] & 15, any_t1);
403 if (ix + 1 + (dev->atr[1] & 0x0f) + any_t1 != dev->atr_len) {
404 DEBUGP(5, dev, "length error\n");
405 return 0;
406 }
407 if (any_t0)
408 set_bit(IS_ANY_T0, &dev->flags);
409
410 if (any_t1) { /* compute csum */
411 dev->atr_csum = 0;
412 #ifdef ATR_CSUM
413 for (i = 1; i < dev->atr_len; i++)
414 dev->atr_csum ^= dev->atr[i];
415 if (dev->atr_csum) {
416 set_bit(IS_BAD_CSUM, &dev->flags);
417 DEBUGP(5, dev, "bad checksum\n");
418 goto return_0;
419 }
420 #endif
421 if (any_t0 == 0)
422 dev->proto = 1; /* XXX PROTO */
423 set_bit(IS_ANY_T1, &dev->flags);
424 }
425
426 return 1;
427 }
428
429 struct card_fixup {
430 char atr[12];
431 u_int8_t atr_len;
432 u_int8_t stopbits;
433 };
434
435 static struct card_fixup card_fixups[] = {
436 { /* ACOS */
437 .atr = { 0x3b, 0xb3, 0x11, 0x00, 0x00, 0x41, 0x01 },
438 .atr_len = 7,
439 .stopbits = 0x03,
440 },
441 { /* Motorola */
442 .atr = {0x3b, 0x76, 0x13, 0x00, 0x00, 0x80, 0x62, 0x07,
443 0x41, 0x81, 0x81 },
444 .atr_len = 11,
445 .stopbits = 0x04,
446 },
447 };
448
449 static void set_cardparameter(struct cm4000_dev *dev)
450 {
451 int i;
452 ioaddr_t iobase = dev->p_dev->io.BasePort1;
453 u_int8_t stopbits = 0x02; /* ISO default */
454
455 DEBUGP(3, dev, "-> set_cardparameter\n");
456
457 dev->flags1 = dev->flags1 | (((dev->baudv - 1) & 0x0100) >> 8);
458 xoutb(dev->flags1, REG_FLAGS1(iobase));
459 DEBUGP(5, dev, "flags1 = 0x%02x\n", dev->flags1);
460
461 /* set baudrate */
462 xoutb((unsigned char)((dev->baudv - 1) & 0xFF), REG_BAUDRATE(iobase));
463
464 DEBUGP(5, dev, "baudv = %i -> write 0x%02x\n", dev->baudv,
465 ((dev->baudv - 1) & 0xFF));
466
467 /* set stopbits */
468 for (i = 0; i < ARRAY_SIZE(card_fixups); i++) {
469 if (!memcmp(dev->atr, card_fixups[i].atr,
470 card_fixups[i].atr_len))
471 stopbits = card_fixups[i].stopbits;
472 }
473 xoutb(stopbits, REG_STOPBITS(iobase));
474
475 DEBUGP(3, dev, "<- set_cardparameter\n");
476 }
477
478 static int set_protocol(struct cm4000_dev *dev, struct ptsreq *ptsreq)
479 {
480
481 unsigned long tmp, i;
482 unsigned short num_bytes_read;
483 unsigned char pts_reply[4];
484 ssize_t rc;
485 ioaddr_t iobase = dev->p_dev->io.BasePort1;
486
487 rc = 0;
488
489 DEBUGP(3, dev, "-> set_protocol\n");
490 DEBUGP(5, dev, "ptsreq->Protocol = 0x%.8x, ptsreq->Flags=0x%.8x, "
491 "ptsreq->pts1=0x%.2x, ptsreq->pts2=0x%.2x, "
492 "ptsreq->pts3=0x%.2x\n", (unsigned int)ptsreq->protocol,
493 (unsigned int)ptsreq->flags, ptsreq->pts1, ptsreq->pts2,
494 ptsreq->pts3);
495
496 /* Fill PTS structure */
497 dev->pts[0] = 0xff;
498 dev->pts[1] = 0x00;
499 tmp = ptsreq->protocol;
500 while ((tmp = (tmp >> 1)) > 0)
501 dev->pts[1]++;
502 dev->proto = dev->pts[1]; /* Set new protocol */
503 dev->pts[1] = (0x01 << 4) | (dev->pts[1]);
504
505 /* Correct Fi/Di according to CM4000 Fi/Di table */
506 DEBUGP(5, dev, "Ta(1) from ATR is 0x%.2x\n", dev->ta1);
507 /* set Fi/Di according to ATR TA(1) */
508 dev->pts[2] = fi_di_table[dev->ta1 & 0x0F][(dev->ta1 >> 4) & 0x0F];
509
510 /* Calculate PCK character */
511 dev->pts[3] = dev->pts[0] ^ dev->pts[1] ^ dev->pts[2];
512
513 DEBUGP(5, dev, "pts0=%.2x, pts1=%.2x, pts2=%.2x, pts3=%.2x\n",
514 dev->pts[0], dev->pts[1], dev->pts[2], dev->pts[3]);
515
516 /* check card convention */
517 if (test_bit(IS_INVREV, &dev->flags))
518 str_invert_revert(dev->pts, 4);
519
520 /* reset SM */
521 xoutb(0x80, REG_FLAGS0(iobase));
522
523 /* Enable access to the message buffer */
524 DEBUGP(5, dev, "Enable access to the messages buffer\n");
525 dev->flags1 = 0x20 /* T_Active */
526 | (test_bit(IS_INVREV, &dev->flags) ? 0x02 : 0x00) /* inv parity */
527 | ((dev->baudv >> 8) & 0x01); /* MSB-baud */
528 xoutb(dev->flags1, REG_FLAGS1(iobase));
529
530 DEBUGP(5, dev, "Enable message buffer -> flags1 = 0x%.2x\n",
531 dev->flags1);
532
533 /* write challenge to the buffer */
534 DEBUGP(5, dev, "Write challenge to buffer: ");
535 for (i = 0; i < 4; i++) {
536 xoutb(i, REG_BUF_ADDR(iobase));
537 xoutb(dev->pts[i], REG_BUF_DATA(iobase)); /* buf data */
538 #ifdef PCMCIA_DEBUG
539 if (pc_debug >= 5)
540 printk("0x%.2x ", dev->pts[i]);
541 }
542 if (pc_debug >= 5)
543 printk("\n");
544 #else
545 }
546 #endif
547
548 /* set number of bytes to write */
549 DEBUGP(5, dev, "Set number of bytes to write\n");
550 xoutb(0x04, REG_NUM_SEND(iobase));
551
552 /* Trigger CARDMAN CONTROLLER */
553 xoutb(0x50, REG_FLAGS0(iobase));
554
555 /* Monitor progress */
556 /* wait for xmit done */
557 DEBUGP(5, dev, "Waiting for NumRecBytes getting valid\n");
558
559 for (i = 0; i < 100; i++) {
560 if (inb(REG_FLAGS0(iobase)) & 0x08) {
561 DEBUGP(5, dev, "NumRecBytes is valid\n");
562 break;
563 }
564 mdelay(10);
565 }
566 if (i == 100) {
567 DEBUGP(5, dev, "Timeout waiting for NumRecBytes getting "
568 "valid\n");
569 rc = -EIO;
570 goto exit_setprotocol;
571 }
572
573 DEBUGP(5, dev, "Reading NumRecBytes\n");
574 for (i = 0; i < 100; i++) {
575 io_read_num_rec_bytes(iobase, &num_bytes_read);
576 if (num_bytes_read >= 4) {
577 DEBUGP(2, dev, "NumRecBytes = %i\n", num_bytes_read);
578 break;
579 }
580 mdelay(10);
581 }
582
583 /* check whether it is a short PTS reply? */
584 if (num_bytes_read == 3)
585 i = 0;
586
587 if (i == 100) {
588 DEBUGP(5, dev, "Timeout reading num_bytes_read\n");
589 rc = -EIO;
590 goto exit_setprotocol;
591 }
592
593 DEBUGP(5, dev, "Reset the CARDMAN CONTROLLER\n");
594 xoutb(0x80, REG_FLAGS0(iobase));
595
596 /* Read PPS reply */
597 DEBUGP(5, dev, "Read PPS reply\n");
598 for (i = 0; i < num_bytes_read; i++) {
599 xoutb(i, REG_BUF_ADDR(iobase));
600 pts_reply[i] = inb(REG_BUF_DATA(iobase));
601 }
602
603 #ifdef PCMCIA_DEBUG
604 DEBUGP(2, dev, "PTSreply: ");
605 for (i = 0; i < num_bytes_read; i++) {
606 if (pc_debug >= 5)
607 printk("0x%.2x ", pts_reply[i]);
608 }
609 printk("\n");
610 #endif /* PCMCIA_DEBUG */
611
612 DEBUGP(5, dev, "Clear Tactive in Flags1\n");
613 xoutb(0x20, REG_FLAGS1(iobase));
614
615 /* Compare ptsreq and ptsreply */
616 if ((dev->pts[0] == pts_reply[0]) &&
617 (dev->pts[1] == pts_reply[1]) &&
618 (dev->pts[2] == pts_reply[2]) && (dev->pts[3] == pts_reply[3])) {
619 /* setcardparameter according to PPS */
620 dev->baudv = calc_baudv(dev->pts[2]);
621 set_cardparameter(dev);
622 } else if ((dev->pts[0] == pts_reply[0]) &&
623 ((dev->pts[1] & 0xef) == pts_reply[1]) &&
624 ((pts_reply[0] ^ pts_reply[1]) == pts_reply[2])) {
625 /* short PTS reply, set card parameter to default values */
626 dev->baudv = calc_baudv(0x11);
627 set_cardparameter(dev);
628 } else
629 rc = -EIO;
630
631 exit_setprotocol:
632 DEBUGP(3, dev, "<- set_protocol\n");
633 return rc;
634 }
635
636 static int io_detect_cm4000(ioaddr_t iobase, struct cm4000_dev *dev)
637 {
638
639 /* note: statemachine is assumed to be reset */
640 if (inb(REG_FLAGS0(iobase)) & 8) {
641 clear_bit(IS_ATR_VALID, &dev->flags);
642 set_bit(IS_CMM_ABSENT, &dev->flags);
643 return 0; /* detect CMM = 1 -> failure */
644 }
645 /* xoutb(0x40, REG_FLAGS1(iobase)); detectCMM */
646 xoutb(dev->flags1 | 0x40, REG_FLAGS1(iobase));
647 if ((inb(REG_FLAGS0(iobase)) & 8) == 0) {
648 clear_bit(IS_ATR_VALID, &dev->flags);
649 set_bit(IS_CMM_ABSENT, &dev->flags);
650 return 0; /* detect CMM=0 -> failure */
651 }
652 /* clear detectCMM again by restoring original flags1 */
653 xoutb(dev->flags1, REG_FLAGS1(iobase));
654 return 1;
655 }
656
657 static void terminate_monitor(struct cm4000_dev *dev)
658 {
659
660 /* tell the monitor to stop and wait until
661 * it terminates.
662 */
663 DEBUGP(3, dev, "-> terminate_monitor\n");
664 wait_event_interruptible(dev->devq,
665 test_and_set_bit(LOCK_MONITOR,
666 (void *)&dev->flags));
667
668 /* now, LOCK_MONITOR has been set.
669 * allow a last cycle in the monitor.
670 * the monitor will indicate that it has
671 * finished by clearing this bit.
672 */
673 DEBUGP(5, dev, "Now allow last cycle of monitor!\n");
674 while (test_bit(LOCK_MONITOR, (void *)&dev->flags))
675 msleep(25);
676
677 DEBUGP(5, dev, "Delete timer\n");
678 del_timer_sync(&dev->timer);
679 #ifdef PCMCIA_DEBUG
680 dev->monitor_running = 0;
681 #endif
682
683 DEBUGP(3, dev, "<- terminate_monitor\n");
684 }
685
686 /*
687 * monitor the card every 50msec. as a side-effect, retrieve the
688 * atr once a card is inserted. another side-effect of retrieving the
689 * atr is that the card will be powered on, so there is no need to
690 * power on the card explictely from the application: the driver
691 * is already doing that for you.
692 */
693
694 static void monitor_card(unsigned long p)
695 {
696 struct cm4000_dev *dev = (struct cm4000_dev *) p;
697 ioaddr_t iobase = dev->p_dev->io.BasePort1;
698 unsigned short s;
699 struct ptsreq ptsreq;
700 int i, atrc;
701
702 DEBUGP(7, dev, "-> monitor_card\n");
703
704 /* if someone has set the lock for us: we're done! */
705 if (test_and_set_bit(LOCK_MONITOR, &dev->flags)) {
706 DEBUGP(4, dev, "About to stop monitor\n");
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 clear_bit(LOCK_MONITOR, &dev->flags);
713 /* close et al. are sleeping on devq, so wake it */
714 wake_up_interruptible(&dev->devq);
715 DEBUGP(2, dev, "<- monitor_card (we are done now)\n");
716 return;
717 }
718
719 /* try to lock io: if it is already locked, just add another timer */
720 if (test_and_set_bit(LOCK_IO, (void *)&dev->flags)) {
721 DEBUGP(4, dev, "Couldn't get IO lock\n");
722 goto return_with_timer;
723 }
724
725 /* is a card/a reader inserted at all ? */
726 dev->flags0 = xinb(REG_FLAGS0(iobase));
727 DEBUGP(7, dev, "dev->flags0 = 0x%2x\n", dev->flags0);
728 DEBUGP(7, dev, "smartcard present: %s\n",
729 dev->flags0 & 1 ? "yes" : "no");
730 DEBUGP(7, dev, "cardman present: %s\n",
731 dev->flags0 == 0xff ? "no" : "yes");
732
733 if ((dev->flags0 & 1) == 0 /* no smartcard inserted */
734 || dev->flags0 == 0xff) { /* no cardman inserted */
735 /* no */
736 dev->rlen =
737 dev->rpos =
738 dev->atr_csum = dev->atr_len_retry = dev->cwarn = 0;
739 dev->mstate = M_FETCH_ATR;
740
741 dev->flags &= 0x000000ff; /* only keep IO and MONITOR locks */
742
743 if (dev->flags0 == 0xff) {
744 DEBUGP(4, dev, "set IS_CMM_ABSENT bit\n");
745 set_bit(IS_CMM_ABSENT, &dev->flags);
746 } else if (test_bit(IS_CMM_ABSENT, &dev->flags)) {
747 DEBUGP(4, dev, "clear IS_CMM_ABSENT bit "
748 "(card is removed)\n");
749 clear_bit(IS_CMM_ABSENT, &dev->flags);
750 }
751
752 goto release_io;
753 } else if ((dev->flags0 & 1) && test_bit(IS_CMM_ABSENT, &dev->flags)) {
754 /* cardman and card present but cardman was absent before
755 * (after suspend with inserted card) */
756 DEBUGP(4, dev, "clear IS_CMM_ABSENT bit (card is inserted)\n");
757 clear_bit(IS_CMM_ABSENT, &dev->flags);
758 }
759
760 if (test_bit(IS_ATR_VALID, &dev->flags) == 1) {
761 DEBUGP(7, dev, "believe ATR is already valid (do nothing)\n");
762 goto release_io;
763 }
764
765 switch (dev->mstate) {
766 unsigned char flags0;
767 case M_CARDOFF:
768 DEBUGP(4, dev, "M_CARDOFF\n");
769 flags0 = inb(REG_FLAGS0(iobase));
770 if (flags0 & 0x02) {
771 /* wait until Flags0 indicate power is off */
772 dev->mdelay = T_10MSEC;
773 } else {
774 /* Flags0 indicate power off and no card inserted now;
775 * Reset CARDMAN CONTROLLER */
776 xoutb(0x80, REG_FLAGS0(iobase));
777
778 /* prepare for fetching ATR again: after card off ATR
779 * is read again automatically */
780 dev->rlen =
781 dev->rpos =
782 dev->atr_csum =
783 dev->atr_len_retry = dev->cwarn = 0;
784 dev->mstate = M_FETCH_ATR;
785
786 /* minimal gap between CARDOFF and read ATR is 50msec */
787 dev->mdelay = T_50MSEC;
788 }
789 break;
790 case M_FETCH_ATR:
791 DEBUGP(4, dev, "M_FETCH_ATR\n");
792 xoutb(0x80, REG_FLAGS0(iobase));
793 DEBUGP(4, dev, "Reset BAUDV to 9600\n");
794 dev->baudv = 0x173; /* 9600 */
795 xoutb(0x02, REG_STOPBITS(iobase)); /* stopbits=2 */
796 xoutb(0x73, REG_BAUDRATE(iobase)); /* baud value */
797 xoutb(0x21, REG_FLAGS1(iobase)); /* T_Active=1, baud
798 value */
799 /* warm start vs. power on: */
800 xoutb(dev->flags0 & 2 ? 0x46 : 0x44, REG_FLAGS0(iobase));
801 dev->mdelay = T_40MSEC;
802 dev->mstate = M_TIMEOUT_WAIT;
803 break;
804 case M_TIMEOUT_WAIT:
805 DEBUGP(4, dev, "M_TIMEOUT_WAIT\n");
806 /* numRecBytes */
807 io_read_num_rec_bytes(iobase, &dev->atr_len);
808 dev->mdelay = T_10MSEC;
809 dev->mstate = M_READ_ATR_LEN;
810 break;
811 case M_READ_ATR_LEN:
812 DEBUGP(4, dev, "M_READ_ATR_LEN\n");
813 /* infinite loop possible, since there is no timeout */
814
815 #define MAX_ATR_LEN_RETRY 100
816
817 if (dev->atr_len == io_read_num_rec_bytes(iobase, &s)) {
818 if (dev->atr_len_retry++ >= MAX_ATR_LEN_RETRY) { /* + XX msec */
819 dev->mdelay = T_10MSEC;
820 dev->mstate = M_READ_ATR;
821 }
822 } else {
823 dev->atr_len = s;
824 dev->atr_len_retry = 0; /* set new timeout */
825 }
826
827 DEBUGP(4, dev, "Current ATR_LEN = %i\n", dev->atr_len);
828 break;
829 case M_READ_ATR:
830 DEBUGP(4, dev, "M_READ_ATR\n");
831 xoutb(0x80, REG_FLAGS0(iobase)); /* reset SM */
832 for (i = 0; i < dev->atr_len; i++) {
833 xoutb(i, REG_BUF_ADDR(iobase));
834 dev->atr[i] = inb(REG_BUF_DATA(iobase));
835 }
836 /* Deactivate T_Active flags */
837 DEBUGP(4, dev, "Deactivate T_Active flags\n");
838 dev->flags1 = 0x01;
839 xoutb(dev->flags1, REG_FLAGS1(iobase));
840
841 /* atr is present (which doesnt mean it's valid) */
842 set_bit(IS_ATR_PRESENT, &dev->flags);
843 if (dev->atr[0] == 0x03)
844 str_invert_revert(dev->atr, dev->atr_len);
845 atrc = parse_atr(dev);
846 if (atrc == 0) { /* atr invalid */
847 dev->mdelay = 0;
848 dev->mstate = M_BAD_CARD;
849 } else {
850 dev->mdelay = T_50MSEC;
851 dev->mstate = M_ATR_PRESENT;
852 set_bit(IS_ATR_VALID, &dev->flags);
853 }
854
855 if (test_bit(IS_ATR_VALID, &dev->flags) == 1) {
856 DEBUGP(4, dev, "monitor_card: ATR valid\n");
857 /* if ta1 == 0x11, no PPS necessary (default values) */
858 /* do not do PPS with multi protocol cards */
859 if ((test_bit(IS_AUTOPPS_ACT, &dev->flags) == 0) &&
860 (dev->ta1 != 0x11) &&
861 !(test_bit(IS_ANY_T0, &dev->flags) &&
862 test_bit(IS_ANY_T1, &dev->flags))) {
863 DEBUGP(4, dev, "Perform AUTOPPS\n");
864 set_bit(IS_AUTOPPS_ACT, &dev->flags);
865 ptsreq.protocol = ptsreq.protocol =
866 (0x01 << dev->proto);
867 ptsreq.flags = 0x01;
868 ptsreq.pts1 = 0x00;
869 ptsreq.pts2 = 0x00;
870 ptsreq.pts3 = 0x00;
871 if (set_protocol(dev, &ptsreq) == 0) {
872 DEBUGP(4, dev, "AUTOPPS ret SUCC\n");
873 clear_bit(IS_AUTOPPS_ACT, &dev->flags);
874 wake_up_interruptible(&dev->atrq);
875 } else {
876 DEBUGP(4, dev, "AUTOPPS failed: "
877 "repower using defaults\n");
878 /* prepare for repowering */
879 clear_bit(IS_ATR_PRESENT, &dev->flags);
880 clear_bit(IS_ATR_VALID, &dev->flags);
881 dev->rlen =
882 dev->rpos =
883 dev->atr_csum =
884 dev->atr_len_retry = dev->cwarn = 0;
885 dev->mstate = M_FETCH_ATR;
886
887 dev->mdelay = T_50MSEC;
888 }
889 } else {
890 /* for cards which use slightly different
891 * params (extra guard time) */
892 set_cardparameter(dev);
893 if (test_bit(IS_AUTOPPS_ACT, &dev->flags) == 1)
894 DEBUGP(4, dev, "AUTOPPS already active "
895 "2nd try:use default values\n");
896 if (dev->ta1 == 0x11)
897 DEBUGP(4, dev, "No AUTOPPS necessary "
898 "TA(1)==0x11\n");
899 if (test_bit(IS_ANY_T0, &dev->flags)
900 && test_bit(IS_ANY_T1, &dev->flags))
901 DEBUGP(4, dev, "Do NOT perform AUTOPPS "
902 "with multiprotocol cards\n");
903 clear_bit(IS_AUTOPPS_ACT, &dev->flags);
904 wake_up_interruptible(&dev->atrq);
905 }
906 } else {
907 DEBUGP(4, dev, "ATR invalid\n");
908 wake_up_interruptible(&dev->atrq);
909 }
910 break;
911 case M_BAD_CARD:
912 DEBUGP(4, dev, "M_BAD_CARD\n");
913 /* slow down warning, but prompt immediately after insertion */
914 if (dev->cwarn == 0 || dev->cwarn == 10) {
915 set_bit(IS_BAD_CARD, &dev->flags);
916 printk(KERN_WARNING MODULE_NAME ": device %s: ",
917 dev->node.dev_name);
918 if (test_bit(IS_BAD_CSUM, &dev->flags)) {
919 DEBUGP(4, dev, "ATR checksum (0x%.2x, should "
920 "be zero) failed\n", dev->atr_csum);
921 }
922 #ifdef PCMCIA_DEBUG
923 else if (test_bit(IS_BAD_LENGTH, &dev->flags)) {
924 DEBUGP(4, dev, "ATR length error\n");
925 } else {
926 DEBUGP(4, dev, "card damaged or wrong way "
927 "inserted\n");
928 }
929 #endif
930 dev->cwarn = 0;
931 wake_up_interruptible(&dev->atrq); /* wake open */
932 }
933 dev->cwarn++;
934 dev->mdelay = T_100MSEC;
935 dev->mstate = M_FETCH_ATR;
936 break;
937 default:
938 DEBUGP(7, dev, "Unknown action\n");
939 break; /* nothing */
940 }
941
942 release_io:
943 DEBUGP(7, dev, "release_io\n");
944 clear_bit(LOCK_IO, &dev->flags);
945 wake_up_interruptible(&dev->ioq); /* whoever needs IO */
946
947 return_with_timer:
948 DEBUGP(7, dev, "<- monitor_card (returns with timer)\n");
949 mod_timer(&dev->timer, jiffies + dev->mdelay);
950 clear_bit(LOCK_MONITOR, &dev->flags);
951 }
952
953 /* Interface to userland (file_operations) */
954
955 static ssize_t cmm_read(struct file *filp, __user char *buf, size_t count,
956 loff_t *ppos)
957 {
958 struct cm4000_dev *dev = filp->private_data;
959 ioaddr_t iobase = dev->p_dev->io.BasePort1;
960 ssize_t rc;
961 int i, j, k;
962
963 DEBUGP(2, dev, "-> cmm_read(%s,%d)\n", current->comm, current->pid);
964
965 if (count == 0) /* according to manpage */
966 return 0;
967
968 if (!pcmcia_dev_present(dev->p_dev) || /* device removed */
969 test_bit(IS_CMM_ABSENT, &dev->flags))
970 return -ENODEV;
971
972 if (test_bit(IS_BAD_CSUM, &dev->flags))
973 return -EIO;
974
975 /* also see the note about this in cmm_write */
976 if (wait_event_interruptible
977 (dev->atrq,
978 ((filp->f_flags & O_NONBLOCK)
979 || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags) != 0)))) {
980 if (filp->f_flags & O_NONBLOCK)
981 return -EAGAIN;
982 return -ERESTARTSYS;
983 }
984
985 if (test_bit(IS_ATR_VALID, &dev->flags) == 0)
986 return -EIO;
987
988 /* this one implements blocking IO */
989 if (wait_event_interruptible
990 (dev->readq,
991 ((filp->f_flags & O_NONBLOCK) || (dev->rpos < dev->rlen)))) {
992 if (filp->f_flags & O_NONBLOCK)
993 return -EAGAIN;
994 return -ERESTARTSYS;
995 }
996
997 /* lock io */
998 if (wait_event_interruptible
999 (dev->ioq,
1000 ((filp->f_flags & O_NONBLOCK)
1001 || (test_and_set_bit(LOCK_IO, (void *)&dev->flags) == 0)))) {
1002 if (filp->f_flags & O_NONBLOCK)
1003 return -EAGAIN;
1004 return -ERESTARTSYS;
1005 }
1006
1007 rc = 0;
1008 dev->flags0 = inb(REG_FLAGS0(iobase));
1009 if ((dev->flags0 & 1) == 0 /* no smartcard inserted */
1010 || dev->flags0 == 0xff) { /* no cardman inserted */
1011 clear_bit(IS_ATR_VALID, &dev->flags);
1012 if (dev->flags0 & 1) {
1013 set_bit(IS_CMM_ABSENT, &dev->flags);
1014 rc = -ENODEV;
1015 }
1016 rc = -EIO;
1017 goto release_io;
1018 }
1019
1020 DEBUGP(4, dev, "begin read answer\n");
1021 j = min(count, (size_t)(dev->rlen - dev->rpos));
1022 k = dev->rpos;
1023 if (k + j > 255)
1024 j = 256 - k;
1025 DEBUGP(4, dev, "read1 j=%d\n", j);
1026 for (i = 0; i < j; i++) {
1027 xoutb(k++, REG_BUF_ADDR(iobase));
1028 dev->rbuf[i] = xinb(REG_BUF_DATA(iobase));
1029 }
1030 j = min(count, (size_t)(dev->rlen - dev->rpos));
1031 if (k + j > 255) {
1032 DEBUGP(4, dev, "read2 j=%d\n", j);
1033 dev->flags1 |= 0x10; /* MSB buf addr set */
1034 xoutb(dev->flags1, REG_FLAGS1(iobase));
1035 for (; i < j; i++) {
1036 xoutb(k++, REG_BUF_ADDR(iobase));
1037 dev->rbuf[i] = xinb(REG_BUF_DATA(iobase));
1038 }
1039 }
1040
1041 if (dev->proto == 0 && count > dev->rlen - dev->rpos) {
1042 DEBUGP(4, dev, "T=0 and count > buffer\n");
1043 dev->rbuf[i] = dev->rbuf[i - 1];
1044 dev->rbuf[i - 1] = dev->procbyte;
1045 j++;
1046 }
1047 count = j;
1048
1049 dev->rpos = dev->rlen + 1;
1050
1051 /* Clear T1Active */
1052 DEBUGP(4, dev, "Clear T1Active\n");
1053 dev->flags1 &= 0xdf;
1054 xoutb(dev->flags1, REG_FLAGS1(iobase));
1055
1056 xoutb(0, REG_FLAGS1(iobase)); /* clear detectCMM */
1057 /* last check before exit */
1058 if (!io_detect_cm4000(iobase, dev))
1059 count = -ENODEV;
1060
1061 if (test_bit(IS_INVREV, &dev->flags) && count > 0)
1062 str_invert_revert(dev->rbuf, count);
1063
1064 if (copy_to_user(buf, dev->rbuf, count))
1065 return -EFAULT;
1066
1067 release_io:
1068 clear_bit(LOCK_IO, &dev->flags);
1069 wake_up_interruptible(&dev->ioq);
1070
1071 DEBUGP(2, dev, "<- cmm_read returns: rc = %Zi\n",
1072 (rc < 0 ? rc : count));
1073 return rc < 0 ? rc : count;
1074 }
1075
1076 static ssize_t cmm_write(struct file *filp, const char __user *buf,
1077 size_t count, loff_t *ppos)
1078 {
1079 struct cm4000_dev *dev = (struct cm4000_dev *) filp->private_data;
1080 ioaddr_t iobase = dev->p_dev->io.BasePort1;
1081 unsigned short s;
1082 unsigned char tmp;
1083 unsigned char infolen;
1084 unsigned char sendT0;
1085 unsigned short nsend;
1086 unsigned short nr;
1087 ssize_t rc;
1088 int i;
1089
1090 DEBUGP(2, dev, "-> cmm_write(%s,%d)\n", current->comm, current->pid);
1091
1092 if (count == 0) /* according to manpage */
1093 return 0;
1094
1095 if (dev->proto == 0 && count < 4) {
1096 /* T0 must have at least 4 bytes */
1097 DEBUGP(4, dev, "T0 short write\n");
1098 return -EIO;
1099 }
1100
1101 nr = count & 0x1ff; /* max bytes to write */
1102
1103 sendT0 = dev->proto ? 0 : nr > 5 ? 0x08 : 0;
1104
1105 if (!pcmcia_dev_present(dev->p_dev) || /* device removed */
1106 test_bit(IS_CMM_ABSENT, &dev->flags))
1107 return -ENODEV;
1108
1109 if (test_bit(IS_BAD_CSUM, &dev->flags)) {
1110 DEBUGP(4, dev, "bad csum\n");
1111 return -EIO;
1112 }
1113
1114 /*
1115 * wait for atr to become valid.
1116 * note: it is important to lock this code. if we dont, the monitor
1117 * could be run between test_bit and the the call the sleep on the
1118 * atr-queue. if *then* the monitor detects atr valid, it will wake up
1119 * any process on the atr-queue, *but* since we have been interrupted,
1120 * we do not yet sleep on this queue. this would result in a missed
1121 * wake_up and the calling process would sleep forever (until
1122 * interrupted). also, do *not* restore_flags before sleep_on, because
1123 * this could result in the same situation!
1124 */
1125 if (wait_event_interruptible
1126 (dev->atrq,
1127 ((filp->f_flags & O_NONBLOCK)
1128 || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags) != 0)))) {
1129 if (filp->f_flags & O_NONBLOCK)
1130 return -EAGAIN;
1131 return -ERESTARTSYS;
1132 }
1133
1134 if (test_bit(IS_ATR_VALID, &dev->flags) == 0) { /* invalid atr */
1135 DEBUGP(4, dev, "invalid ATR\n");
1136 return -EIO;
1137 }
1138
1139 /* lock io */
1140 if (wait_event_interruptible
1141 (dev->ioq,
1142 ((filp->f_flags & O_NONBLOCK)
1143 || (test_and_set_bit(LOCK_IO, (void *)&dev->flags) == 0)))) {
1144 if (filp->f_flags & O_NONBLOCK)
1145 return -EAGAIN;
1146 return -ERESTARTSYS;
1147 }
1148
1149 if (copy_from_user(dev->sbuf, buf, ((count > 512) ? 512 : count)))
1150 return -EFAULT;
1151
1152 rc = 0;
1153 dev->flags0 = inb(REG_FLAGS0(iobase));
1154 if ((dev->flags0 & 1) == 0 /* no smartcard inserted */
1155 || dev->flags0 == 0xff) { /* no cardman inserted */
1156 clear_bit(IS_ATR_VALID, &dev->flags);
1157 if (dev->flags0 & 1) {
1158 set_bit(IS_CMM_ABSENT, &dev->flags);
1159 rc = -ENODEV;
1160 } else {
1161 DEBUGP(4, dev, "IO error\n");
1162 rc = -EIO;
1163 }
1164 goto release_io;
1165 }
1166
1167 xoutb(0x80, REG_FLAGS0(iobase)); /* reset SM */
1168
1169 if (!io_detect_cm4000(iobase, dev)) {
1170 rc = -ENODEV;
1171 goto release_io;
1172 }
1173
1174 /* reflect T=0 send/read mode in flags1 */
1175 dev->flags1 |= (sendT0);
1176
1177 set_cardparameter(dev);
1178
1179 /* dummy read, reset flag procedure received */
1180 tmp = inb(REG_FLAGS1(iobase));
1181
1182 dev->flags1 = 0x20 /* T_Active */
1183 | (sendT0)
1184 | (test_bit(IS_INVREV, &dev->flags) ? 2 : 0)/* inverse parity */
1185 | (((dev->baudv - 1) & 0x0100) >> 8); /* MSB-Baud */
1186 DEBUGP(1, dev, "set dev->flags1 = 0x%.2x\n", dev->flags1);
1187 xoutb(dev->flags1, REG_FLAGS1(iobase));
1188
1189 /* xmit data */
1190 DEBUGP(4, dev, "Xmit data\n");
1191 for (i = 0; i < nr; i++) {
1192 if (i >= 256) {
1193 dev->flags1 = 0x20 /* T_Active */
1194 | (sendT0) /* SendT0 */
1195 /* inverse parity: */
1196 | (test_bit(IS_INVREV, &dev->flags) ? 2 : 0)
1197 | (((dev->baudv - 1) & 0x0100) >> 8) /* MSB-Baud */
1198 | 0x10; /* set address high */
1199 DEBUGP(4, dev, "dev->flags = 0x%.2x - set address "
1200 "high\n", dev->flags1);
1201 xoutb(dev->flags1, REG_FLAGS1(iobase));
1202 }
1203 if (test_bit(IS_INVREV, &dev->flags)) {
1204 DEBUGP(4, dev, "Apply inverse convention for 0x%.2x "
1205 "-> 0x%.2x\n", (unsigned char)dev->sbuf[i],
1206 invert_revert(dev->sbuf[i]));
1207 xoutb(i, REG_BUF_ADDR(iobase));
1208 xoutb(invert_revert(dev->sbuf[i]),
1209 REG_BUF_DATA(iobase));
1210 } else {
1211 xoutb(i, REG_BUF_ADDR(iobase));
1212 xoutb(dev->sbuf[i], REG_BUF_DATA(iobase));
1213 }
1214 }
1215 DEBUGP(4, dev, "Xmit done\n");
1216
1217 if (dev->proto == 0) {
1218 /* T=0 proto: 0 byte reply */
1219 if (nr == 4) {
1220 DEBUGP(4, dev, "T=0 assumes 0 byte reply\n");
1221 xoutb(i, REG_BUF_ADDR(iobase));
1222 if (test_bit(IS_INVREV, &dev->flags))
1223 xoutb(0xff, REG_BUF_DATA(iobase));
1224 else
1225 xoutb(0x00, REG_BUF_DATA(iobase));
1226 }
1227
1228 /* numSendBytes */
1229 if (sendT0)
1230 nsend = nr;
1231 else {
1232 if (nr == 4)
1233 nsend = 5;
1234 else {
1235 nsend = 5 + (unsigned char)dev->sbuf[4];
1236 if (dev->sbuf[4] == 0)
1237 nsend += 0x100;
1238 }
1239 }
1240 } else
1241 nsend = nr;
1242
1243 /* T0: output procedure byte */
1244 if (test_bit(IS_INVREV, &dev->flags)) {
1245 DEBUGP(4, dev, "T=0 set Procedure byte (inverse-reverse) "
1246 "0x%.2x\n", invert_revert(dev->sbuf[1]));
1247 xoutb(invert_revert(dev->sbuf[1]), REG_NUM_BYTES(iobase));
1248 } else {
1249 DEBUGP(4, dev, "T=0 set Procedure byte 0x%.2x\n", dev->sbuf[1]);
1250 xoutb(dev->sbuf[1], REG_NUM_BYTES(iobase));
1251 }
1252
1253 DEBUGP(1, dev, "set NumSendBytes = 0x%.2x\n",
1254 (unsigned char)(nsend & 0xff));
1255 xoutb((unsigned char)(nsend & 0xff), REG_NUM_SEND(iobase));
1256
1257 DEBUGP(1, dev, "Trigger CARDMAN CONTROLLER (0x%.2x)\n",
1258 0x40 /* SM_Active */
1259 | (dev->flags0 & 2 ? 0 : 4) /* power on if needed */
1260 |(dev->proto ? 0x10 : 0x08) /* T=1/T=0 */
1261 |(nsend & 0x100) >> 8 /* MSB numSendBytes */ );
1262 xoutb(0x40 /* SM_Active */
1263 | (dev->flags0 & 2 ? 0 : 4) /* power on if needed */
1264 |(dev->proto ? 0x10 : 0x08) /* T=1/T=0 */
1265 |(nsend & 0x100) >> 8, /* MSB numSendBytes */
1266 REG_FLAGS0(iobase));
1267
1268 /* wait for xmit done */
1269 if (dev->proto == 1) {
1270 DEBUGP(4, dev, "Wait for xmit done\n");
1271 for (i = 0; i < 1000; i++) {
1272 if (inb(REG_FLAGS0(iobase)) & 0x08)
1273 break;
1274 msleep_interruptible(10);
1275 }
1276 if (i == 1000) {
1277 DEBUGP(4, dev, "timeout waiting for xmit done\n");
1278 rc = -EIO;
1279 goto release_io;
1280 }
1281 }
1282
1283 /* T=1: wait for infoLen */
1284
1285 infolen = 0;
1286 if (dev->proto) {
1287 /* wait until infoLen is valid */
1288 for (i = 0; i < 6000; i++) { /* max waiting time of 1 min */
1289 io_read_num_rec_bytes(iobase, &s);
1290 if (s >= 3) {
1291 infolen = inb(REG_FLAGS1(iobase));
1292 DEBUGP(4, dev, "infolen=%d\n", infolen);
1293 break;
1294 }
1295 msleep_interruptible(10);
1296 }
1297 if (i == 6000) {
1298 DEBUGP(4, dev, "timeout waiting for infoLen\n");
1299 rc = -EIO;
1300 goto release_io;
1301 }
1302 } else
1303 clear_bit(IS_PROCBYTE_PRESENT, &dev->flags);
1304
1305 /* numRecBytes | bit9 of numRecytes */
1306 io_read_num_rec_bytes(iobase, &dev->rlen);
1307 for (i = 0; i < 600; i++) { /* max waiting time of 2 sec */
1308 if (dev->proto) {
1309 if (dev->rlen >= infolen + 4)
1310 break;
1311 }
1312 msleep_interruptible(10);
1313 /* numRecBytes | bit9 of numRecytes */
1314 io_read_num_rec_bytes(iobase, &s);
1315 if (s > dev->rlen) {
1316 DEBUGP(1, dev, "NumRecBytes inc (reset timeout)\n");
1317 i = 0; /* reset timeout */
1318 dev->rlen = s;
1319 }
1320 /* T=0: we are done when numRecBytes doesn't
1321 * increment any more and NoProcedureByte
1322 * is set and numRecBytes == bytes sent + 6
1323 * (header bytes + data + 1 for sw2)
1324 * except when the card replies an error
1325 * which means, no data will be sent back.
1326 */
1327 else if (dev->proto == 0) {
1328 if ((inb(REG_BUF_ADDR(iobase)) & 0x80)) {
1329 /* no procedure byte received since last read */
1330 DEBUGP(1, dev, "NoProcedure byte set\n");
1331 /* i=0; */
1332 } else {
1333 /* procedure byte received since last read */
1334 DEBUGP(1, dev, "NoProcedure byte unset "
1335 "(reset timeout)\n");
1336 dev->procbyte = inb(REG_FLAGS1(iobase));
1337 DEBUGP(1, dev, "Read procedure byte 0x%.2x\n",
1338 dev->procbyte);
1339 i = 0; /* resettimeout */
1340 }
1341 if (inb(REG_FLAGS0(iobase)) & 0x08) {
1342 DEBUGP(1, dev, "T0Done flag (read reply)\n");
1343 break;
1344 }
1345 }
1346 if (dev->proto)
1347 infolen = inb(REG_FLAGS1(iobase));
1348 }
1349 if (i == 600) {
1350 DEBUGP(1, dev, "timeout waiting for numRecBytes\n");
1351 rc = -EIO;
1352 goto release_io;
1353 } else {
1354 if (dev->proto == 0) {
1355 DEBUGP(1, dev, "Wait for T0Done bit to be set\n");
1356 for (i = 0; i < 1000; i++) {
1357 if (inb(REG_FLAGS0(iobase)) & 0x08)
1358 break;
1359 msleep_interruptible(10);
1360 }
1361 if (i == 1000) {
1362 DEBUGP(1, dev, "timeout waiting for T0Done\n");
1363 rc = -EIO;
1364 goto release_io;
1365 }
1366
1367 dev->procbyte = inb(REG_FLAGS1(iobase));
1368 DEBUGP(4, dev, "Read procedure byte 0x%.2x\n",
1369 dev->procbyte);
1370
1371 io_read_num_rec_bytes(iobase, &dev->rlen);
1372 DEBUGP(4, dev, "Read NumRecBytes = %i\n", dev->rlen);
1373
1374 }
1375 }
1376 /* T=1: read offset=zero, T=0: read offset=after challenge */
1377 dev->rpos = dev->proto ? 0 : nr == 4 ? 5 : nr > dev->rlen ? 5 : nr;
1378 DEBUGP(4, dev, "dev->rlen = %i, dev->rpos = %i, nr = %i\n",
1379 dev->rlen, dev->rpos, nr);
1380
1381 release_io:
1382 DEBUGP(4, dev, "Reset SM\n");
1383 xoutb(0x80, REG_FLAGS0(iobase)); /* reset SM */
1384
1385 if (rc < 0) {
1386 DEBUGP(4, dev, "Write failed but clear T_Active\n");
1387 dev->flags1 &= 0xdf;
1388 xoutb(dev->flags1, REG_FLAGS1(iobase));
1389 }
1390
1391 clear_bit(LOCK_IO, &dev->flags);
1392 wake_up_interruptible(&dev->ioq);
1393 wake_up_interruptible(&dev->readq); /* tell read we have data */
1394
1395 /* ITSEC E2: clear write buffer */
1396 memset((char *)dev->sbuf, 0, 512);
1397
1398 /* return error or actually written bytes */
1399 DEBUGP(2, dev, "<- cmm_write\n");
1400 return rc < 0 ? rc : nr;
1401 }
1402
1403 static void start_monitor(struct cm4000_dev *dev)
1404 {
1405 DEBUGP(3, dev, "-> start_monitor\n");
1406 if (!dev->monitor_running) {
1407 DEBUGP(5, dev, "create, init and add timer\n");
1408 setup_timer(&dev->timer, monitor_card, (unsigned long)dev);
1409 dev->monitor_running = 1;
1410 mod_timer(&dev->timer, jiffies);
1411 } else
1412 DEBUGP(5, dev, "monitor already running\n");
1413 DEBUGP(3, dev, "<- start_monitor\n");
1414 }
1415
1416 static void stop_monitor(struct cm4000_dev *dev)
1417 {
1418 DEBUGP(3, dev, "-> stop_monitor\n");
1419 if (dev->monitor_running) {
1420 DEBUGP(5, dev, "stopping monitor\n");
1421 terminate_monitor(dev);
1422 /* reset monitor SM */
1423 clear_bit(IS_ATR_VALID, &dev->flags);
1424 clear_bit(IS_ATR_PRESENT, &dev->flags);
1425 } else
1426 DEBUGP(5, dev, "monitor already stopped\n");
1427 DEBUGP(3, dev, "<- stop_monitor\n");
1428 }
1429
1430 static int cmm_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
1431 unsigned long arg)
1432 {
1433 struct cm4000_dev *dev = filp->private_data;
1434 ioaddr_t iobase = dev->p_dev->io.BasePort1;
1435 struct pcmcia_device *link;
1436 int size;
1437 int rc;
1438 void __user *argp = (void __user *)arg;
1439 #ifdef PCMCIA_DEBUG
1440 char *ioctl_names[CM_IOC_MAXNR + 1] = {
1441 [_IOC_NR(CM_IOCGSTATUS)] "CM_IOCGSTATUS",
1442 [_IOC_NR(CM_IOCGATR)] "CM_IOCGATR",
1443 [_IOC_NR(CM_IOCARDOFF)] "CM_IOCARDOFF",
1444 [_IOC_NR(CM_IOCSPTS)] "CM_IOCSPTS",
1445 [_IOC_NR(CM_IOSDBGLVL)] "CM4000_DBGLVL",
1446 };
1447 #endif
1448 DEBUGP(3, dev, "cmm_ioctl(device=%d.%d) %s\n", imajor(inode),
1449 iminor(inode), ioctl_names[_IOC_NR(cmd)]);
1450
1451 link = dev_table[iminor(inode)];
1452 if (!pcmcia_dev_present(link)) {
1453 DEBUGP(4, dev, "DEV_OK false\n");
1454 return -ENODEV;
1455 }
1456
1457 if (test_bit(IS_CMM_ABSENT, &dev->flags)) {
1458 DEBUGP(4, dev, "CMM_ABSENT flag set\n");
1459 return -ENODEV;
1460 }
1461
1462 if (_IOC_TYPE(cmd) != CM_IOC_MAGIC) {
1463 DEBUGP(4, dev, "ioctype mismatch\n");
1464 return -EINVAL;
1465 }
1466 if (_IOC_NR(cmd) > CM_IOC_MAXNR) {
1467 DEBUGP(4, dev, "iocnr mismatch\n");
1468 return -EINVAL;
1469 }
1470 size = _IOC_SIZE(cmd);
1471 rc = 0;
1472 DEBUGP(4, dev, "iocdir=%.4x iocr=%.4x iocw=%.4x iocsize=%d cmd=%.4x\n",
1473 _IOC_DIR(cmd), _IOC_READ, _IOC_WRITE, size, cmd);
1474
1475 if (_IOC_DIR(cmd) & _IOC_READ) {
1476 if (!access_ok(VERIFY_WRITE, argp, size))
1477 return -EFAULT;
1478 }
1479 if (_IOC_DIR(cmd) & _IOC_WRITE) {
1480 if (!access_ok(VERIFY_READ, argp, size))
1481 return -EFAULT;
1482 }
1483
1484 switch (cmd) {
1485 case CM_IOCGSTATUS:
1486 DEBUGP(4, dev, " ... in CM_IOCGSTATUS\n");
1487 {
1488 int status;
1489
1490 /* clear other bits, but leave inserted & powered as
1491 * they are */
1492 status = dev->flags0 & 3;
1493 if (test_bit(IS_ATR_PRESENT, &dev->flags))
1494 status |= CM_ATR_PRESENT;
1495 if (test_bit(IS_ATR_VALID, &dev->flags))
1496 status |= CM_ATR_VALID;
1497 if (test_bit(IS_CMM_ABSENT, &dev->flags))
1498 status |= CM_NO_READER;
1499 if (test_bit(IS_BAD_CARD, &dev->flags))
1500 status |= CM_BAD_CARD;
1501 if (copy_to_user(argp, &status, sizeof(int)))
1502 return -EFAULT;
1503 }
1504 return 0;
1505 case CM_IOCGATR:
1506 DEBUGP(4, dev, "... in CM_IOCGATR\n");
1507 {
1508 struct atreq __user *atreq = argp;
1509 int tmp;
1510 /* allow nonblocking io and being interrupted */
1511 if (wait_event_interruptible
1512 (dev->atrq,
1513 ((filp->f_flags & O_NONBLOCK)
1514 || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags)
1515 != 0)))) {
1516 if (filp->f_flags & O_NONBLOCK)
1517 return -EAGAIN;
1518 return -ERESTARTSYS;
1519 }
1520
1521 if (test_bit(IS_ATR_VALID, &dev->flags) == 0) {
1522 tmp = -1;
1523 if (copy_to_user(&(atreq->atr_len), &tmp,
1524 sizeof(int)))
1525 return -EFAULT;
1526 } else {
1527 if (copy_to_user(atreq->atr, dev->atr,
1528 dev->atr_len))
1529 return -EFAULT;
1530
1531 tmp = dev->atr_len;
1532 if (copy_to_user(&(atreq->atr_len), &tmp, sizeof(int)))
1533 return -EFAULT;
1534 }
1535 return 0;
1536 }
1537 case CM_IOCARDOFF:
1538
1539 #ifdef PCMCIA_DEBUG
1540 DEBUGP(4, dev, "... in CM_IOCARDOFF\n");
1541 if (dev->flags0 & 0x01) {
1542 DEBUGP(4, dev, " Card inserted\n");
1543 } else {
1544 DEBUGP(2, dev, " No card inserted\n");
1545 }
1546 if (dev->flags0 & 0x02) {
1547 DEBUGP(4, dev, " Card powered\n");
1548 } else {
1549 DEBUGP(2, dev, " Card not powered\n");
1550 }
1551 #endif
1552
1553 /* is a card inserted and powered? */
1554 if ((dev->flags0 & 0x01) && (dev->flags0 & 0x02)) {
1555
1556 /* get IO lock */
1557 if (wait_event_interruptible
1558 (dev->ioq,
1559 ((filp->f_flags & O_NONBLOCK)
1560 || (test_and_set_bit(LOCK_IO, (void *)&dev->flags)
1561 == 0)))) {
1562 if (filp->f_flags & O_NONBLOCK)
1563 return -EAGAIN;
1564 return -ERESTARTSYS;
1565 }
1566 /* Set Flags0 = 0x42 */
1567 DEBUGP(4, dev, "Set Flags0=0x42 \n");
1568 xoutb(0x42, REG_FLAGS0(iobase));
1569 clear_bit(IS_ATR_PRESENT, &dev->flags);
1570 clear_bit(IS_ATR_VALID, &dev->flags);
1571 dev->mstate = M_CARDOFF;
1572 clear_bit(LOCK_IO, &dev->flags);
1573 if (wait_event_interruptible
1574 (dev->atrq,
1575 ((filp->f_flags & O_NONBLOCK)
1576 || (test_bit(IS_ATR_VALID, (void *)&dev->flags) !=
1577 0)))) {
1578 if (filp->f_flags & O_NONBLOCK)
1579 return -EAGAIN;
1580 return -ERESTARTSYS;
1581 }
1582 }
1583 /* release lock */
1584 clear_bit(LOCK_IO, &dev->flags);
1585 wake_up_interruptible(&dev->ioq);
1586
1587 return 0;
1588 case CM_IOCSPTS:
1589 {
1590 struct ptsreq krnptsreq;
1591
1592 if (copy_from_user(&krnptsreq, argp,
1593 sizeof(struct ptsreq)))
1594 return -EFAULT;
1595
1596 rc = 0;
1597 DEBUGP(4, dev, "... in CM_IOCSPTS\n");
1598 /* wait for ATR to get valid */
1599 if (wait_event_interruptible
1600 (dev->atrq,
1601 ((filp->f_flags & O_NONBLOCK)
1602 || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags)
1603 != 0)))) {
1604 if (filp->f_flags & O_NONBLOCK)
1605 return -EAGAIN;
1606 return -ERESTARTSYS;
1607 }
1608 /* get IO lock */
1609 if (wait_event_interruptible
1610 (dev->ioq,
1611 ((filp->f_flags & O_NONBLOCK)
1612 || (test_and_set_bit(LOCK_IO, (void *)&dev->flags)
1613 == 0)))) {
1614 if (filp->f_flags & O_NONBLOCK)
1615 return -EAGAIN;
1616 return -ERESTARTSYS;
1617 }
1618
1619 if ((rc = set_protocol(dev, &krnptsreq)) != 0) {
1620 /* auto power_on again */
1621 dev->mstate = M_FETCH_ATR;
1622 clear_bit(IS_ATR_VALID, &dev->flags);
1623 }
1624 /* release lock */
1625 clear_bit(LOCK_IO, &dev->flags);
1626 wake_up_interruptible(&dev->ioq);
1627
1628 }
1629 return rc;
1630 #ifdef PCMCIA_DEBUG
1631 case CM_IOSDBGLVL: /* set debug log level */
1632 {
1633 int old_pc_debug = 0;
1634
1635 old_pc_debug = pc_debug;
1636 if (copy_from_user(&pc_debug, argp, sizeof(int)))
1637 return -EFAULT;
1638
1639 if (old_pc_debug != pc_debug)
1640 DEBUGP(0, dev, "Changed debug log level "
1641 "to %i\n", pc_debug);
1642 }
1643 return rc;
1644 #endif
1645 default:
1646 DEBUGP(4, dev, "... in default (unknown IOCTL code)\n");
1647 return -EINVAL;
1648 }
1649 }
1650
1651 static int cmm_open(struct inode *inode, struct file *filp)
1652 {
1653 struct cm4000_dev *dev;
1654 struct pcmcia_device *link;
1655 int rc, minor = iminor(inode);
1656
1657 if (minor >= CM4000_MAX_DEV)
1658 return -ENODEV;
1659
1660 link = dev_table[minor];
1661 if (link == NULL || !pcmcia_dev_present(link))
1662 return -ENODEV;
1663
1664 if (link->open)
1665 return -EBUSY;
1666
1667 dev = link->priv;
1668 filp->private_data = dev;
1669
1670 DEBUGP(2, dev, "-> cmm_open(device=%d.%d process=%s,%d)\n",
1671 imajor(inode), minor, current->comm, current->pid);
1672
1673 /* init device variables, they may be "polluted" after close
1674 * or, the device may never have been closed (i.e. open failed)
1675 */
1676
1677 ZERO_DEV(dev);
1678
1679 /* opening will always block since the
1680 * monitor will be started by open, which
1681 * means we have to wait for ATR becoming
1682 * vaild = block until valid (or card
1683 * inserted)
1684 */
1685 if (filp->f_flags & O_NONBLOCK)
1686 return -EAGAIN;
1687
1688 dev->mdelay = T_50MSEC;
1689
1690 /* start monitoring the cardstatus */
1691 start_monitor(dev);
1692
1693 link->open = 1; /* only one open per device */
1694 rc = 0;
1695
1696 DEBUGP(2, dev, "<- cmm_open\n");
1697 return nonseekable_open(inode, filp);
1698 }
1699
1700 static int cmm_close(struct inode *inode, struct file *filp)
1701 {
1702 struct cm4000_dev *dev;
1703 struct pcmcia_device *link;
1704 int minor = iminor(inode);
1705
1706 if (minor >= CM4000_MAX_DEV)
1707 return -ENODEV;
1708
1709 link = dev_table[minor];
1710 if (link == NULL)
1711 return -ENODEV;
1712
1713 dev = link->priv;
1714
1715 DEBUGP(2, dev, "-> cmm_close(maj/min=%d.%d)\n",
1716 imajor(inode), minor);
1717
1718 stop_monitor(dev);
1719
1720 ZERO_DEV(dev);
1721
1722 link->open = 0; /* only one open per device */
1723 wake_up(&dev->devq); /* socket removed? */
1724
1725 DEBUGP(2, dev, "cmm_close\n");
1726 return 0;
1727 }
1728
1729 static void cmm_cm4000_release(struct pcmcia_device * link)
1730 {
1731 struct cm4000_dev *dev = link->priv;
1732
1733 /* dont terminate the monitor, rather rely on
1734 * close doing that for us.
1735 */
1736 DEBUGP(3, dev, "-> cmm_cm4000_release\n");
1737 while (link->open) {
1738 printk(KERN_INFO MODULE_NAME ": delaying release until "
1739 "process has terminated\n");
1740 /* note: don't interrupt us:
1741 * close the applications which own
1742 * the devices _first_ !
1743 */
1744 wait_event(dev->devq, (link->open == 0));
1745 }
1746 /* dev->devq=NULL; this cannot be zeroed earlier */
1747 DEBUGP(3, dev, "<- cmm_cm4000_release\n");
1748 return;
1749 }
1750
1751 /*==== Interface to PCMCIA Layer =======================================*/
1752
1753 static int cm4000_config(struct pcmcia_device * link, int devno)
1754 {
1755 struct cm4000_dev *dev;
1756 tuple_t tuple;
1757 cisparse_t parse;
1758 u_char buf[64];
1759 int fail_fn, fail_rc;
1760 int rc;
1761
1762 /* read the config-tuples */
1763 tuple.Attributes = 0;
1764 tuple.TupleData = buf;
1765 tuple.TupleDataMax = sizeof(buf);
1766 tuple.TupleOffset = 0;
1767
1768 link->io.BasePort2 = 0;
1769 link->io.NumPorts2 = 0;
1770 link->io.Attributes2 = 0;
1771 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
1772 for (rc = pcmcia_get_first_tuple(link, &tuple);
1773 rc == CS_SUCCESS; rc = pcmcia_get_next_tuple(link, &tuple)) {
1774
1775 rc = pcmcia_get_tuple_data(link, &tuple);
1776 if (rc != CS_SUCCESS)
1777 continue;
1778 rc = pcmcia_parse_tuple(link, &tuple, &parse);
1779 if (rc != CS_SUCCESS)
1780 continue;
1781
1782 link->conf.ConfigIndex = parse.cftable_entry.index;
1783
1784 if (!parse.cftable_entry.io.nwin)
1785 continue;
1786
1787 /* Get the IOaddr */
1788 link->io.BasePort1 = parse.cftable_entry.io.win[0].base;
1789 link->io.NumPorts1 = parse.cftable_entry.io.win[0].len;
1790 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
1791 if (!(parse.cftable_entry.io.flags & CISTPL_IO_8BIT))
1792 link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
1793 if (!(parse.cftable_entry.io.flags & CISTPL_IO_16BIT))
1794 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
1795 link->io.IOAddrLines = parse.cftable_entry.io.flags
1796 & CISTPL_IO_LINES_MASK;
1797
1798 rc = pcmcia_request_io(link, &link->io);
1799 if (rc == CS_SUCCESS)
1800 break; /* we are done */
1801 }
1802 if (rc != CS_SUCCESS)
1803 goto cs_release;
1804
1805 link->conf.IntType = 00000002;
1806
1807 if ((fail_rc =
1808 pcmcia_request_configuration(link, &link->conf)) != CS_SUCCESS) {
1809 fail_fn = RequestConfiguration;
1810 goto cs_release;
1811 }
1812
1813 dev = link->priv;
1814 sprintf(dev->node.dev_name, DEVICE_NAME "%d", devno);
1815 dev->node.major = major;
1816 dev->node.minor = devno;
1817 dev->node.next = NULL;
1818 link->dev_node = &dev->node;
1819
1820 return 0;
1821
1822 cs_release:
1823 cm4000_release(link);
1824 return -ENODEV;
1825 }
1826
1827 static int cm4000_suspend(struct pcmcia_device *link)
1828 {
1829 struct cm4000_dev *dev;
1830
1831 dev = link->priv;
1832 stop_monitor(dev);
1833
1834 return 0;
1835 }
1836
1837 static int cm4000_resume(struct pcmcia_device *link)
1838 {
1839 struct cm4000_dev *dev;
1840
1841 dev = link->priv;
1842 if (link->open)
1843 start_monitor(dev);
1844
1845 return 0;
1846 }
1847
1848 static void cm4000_release(struct pcmcia_device *link)
1849 {
1850 cmm_cm4000_release(link->priv); /* delay release until device closed */
1851 pcmcia_disable_device(link);
1852 }
1853
1854 static int cm4000_probe(struct pcmcia_device *link)
1855 {
1856 struct cm4000_dev *dev;
1857 int i, ret;
1858
1859 for (i = 0; i < CM4000_MAX_DEV; i++)
1860 if (dev_table[i] == NULL)
1861 break;
1862
1863 if (i == CM4000_MAX_DEV) {
1864 printk(KERN_NOTICE MODULE_NAME ": all devices in use\n");
1865 return -ENODEV;
1866 }
1867
1868 /* create a new cm4000_cs device */
1869 dev = kzalloc(sizeof(struct cm4000_dev), GFP_KERNEL);
1870 if (dev == NULL)
1871 return -ENOMEM;
1872
1873 dev->p_dev = link;
1874 link->priv = dev;
1875 link->conf.IntType = INT_MEMORY_AND_IO;
1876 dev_table[i] = link;
1877
1878 init_waitqueue_head(&dev->devq);
1879 init_waitqueue_head(&dev->ioq);
1880 init_waitqueue_head(&dev->atrq);
1881 init_waitqueue_head(&dev->readq);
1882
1883 ret = cm4000_config(link, i);
1884 if (ret)
1885 return ret;
1886
1887 class_device_create(cmm_class, NULL, MKDEV(major, i), NULL,
1888 "cmm%d", i);
1889
1890 return 0;
1891 }
1892
1893 static void cm4000_detach(struct pcmcia_device *link)
1894 {
1895 struct cm4000_dev *dev = link->priv;
1896 int devno;
1897
1898 /* find device */
1899 for (devno = 0; devno < CM4000_MAX_DEV; devno++)
1900 if (dev_table[devno] == link)
1901 break;
1902 if (devno == CM4000_MAX_DEV)
1903 return;
1904
1905 stop_monitor(dev);
1906
1907 cm4000_release(link);
1908
1909 dev_table[devno] = NULL;
1910 kfree(dev);
1911
1912 class_device_destroy(cmm_class, MKDEV(major, devno));
1913
1914 return;
1915 }
1916
1917 static const struct file_operations cm4000_fops = {
1918 .owner = THIS_MODULE,
1919 .read = cmm_read,
1920 .write = cmm_write,
1921 .ioctl = cmm_ioctl,
1922 .open = cmm_open,
1923 .release= cmm_close,
1924 };
1925
1926 static struct pcmcia_device_id cm4000_ids[] = {
1927 PCMCIA_DEVICE_MANF_CARD(0x0223, 0x0002),
1928 PCMCIA_DEVICE_PROD_ID12("CardMan", "4000", 0x2FB368CA, 0xA2BD8C39),
1929 PCMCIA_DEVICE_NULL,
1930 };
1931 MODULE_DEVICE_TABLE(pcmcia, cm4000_ids);
1932
1933 static struct pcmcia_driver cm4000_driver = {
1934 .owner = THIS_MODULE,
1935 .drv = {
1936 .name = "cm4000_cs",
1937 },
1938 .probe = cm4000_probe,
1939 .remove = cm4000_detach,
1940 .suspend = cm4000_suspend,
1941 .resume = cm4000_resume,
1942 .id_table = cm4000_ids,
1943 };
1944
1945 static int __init cmm_init(void)
1946 {
1947 int rc;
1948
1949 printk(KERN_INFO "%s\n", version);
1950
1951 cmm_class = class_create(THIS_MODULE, "cardman_4000");
1952 if (IS_ERR(cmm_class))
1953 return PTR_ERR(cmm_class);
1954
1955 major = register_chrdev(0, DEVICE_NAME, &cm4000_fops);
1956 if (major < 0) {
1957 printk(KERN_WARNING MODULE_NAME
1958 ": could not get major number\n");
1959 return major;
1960 }
1961
1962 rc = pcmcia_register_driver(&cm4000_driver);
1963 if (rc < 0) {
1964 unregister_chrdev(major, DEVICE_NAME);
1965 return rc;
1966 }
1967
1968 return 0;
1969 }
1970
1971 static void __exit cmm_exit(void)
1972 {
1973 printk(KERN_INFO MODULE_NAME ": unloading\n");
1974 pcmcia_unregister_driver(&cm4000_driver);
1975 unregister_chrdev(major, DEVICE_NAME);
1976 class_destroy(cmm_class);
1977 };
1978
1979 module_init(cmm_init);
1980 module_exit(cmm_exit);
1981 MODULE_LICENSE("Dual BSD/GPL");
Linux with added FPC-III support