drivers/char: replace remaining __FUNCTION__ occurrences
[linux-2.6.git] / drivers / char / pcmcia / cm4000_cs.c
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 <linux/bitrev.h>
35 #include <asm/uaccess.h>
36 #include <asm/io.h>
37
38 #include <pcmcia/cs_types.h>
39 #include <pcmcia/cs.h>
40 #include <pcmcia/cistpl.h>
41 #include <pcmcia/cisreg.h>
42 #include <pcmcia/ciscode.h>
43 #include <pcmcia/ds.h>
44
45 #include <linux/cm4000_cs.h>
46
47 /* #define ATR_CSUM */
48
49 #ifdef PCMCIA_DEBUG
50 #define reader_to_dev(x)        (&handle_to_dev(x->p_dev))
51 static int pc_debug = PCMCIA_DEBUG;
52 module_param(pc_debug, int, 0600);
53 #define DEBUGP(n, rdr, x, args...) do {                                 \
54         if (pc_debug >= (n))                                            \
55                 dev_printk(KERN_DEBUG, reader_to_dev(rdr), "%s:" x,     \
56                            __func__ , ## args);                 \
57         } while (0)
58 #else
59 #define DEBUGP(n, rdr, x, args...)
60 #endif
61 static char *version = "cm4000_cs.c v2.4.0gm6 - All bugs added by Harald Welte";
62
63 #define T_1SEC          (HZ)
64 #define T_10MSEC        msecs_to_jiffies(10)
65 #define T_20MSEC        msecs_to_jiffies(20)
66 #define T_40MSEC        msecs_to_jiffies(40)
67 #define T_50MSEC        msecs_to_jiffies(50)
68 #define T_100MSEC       msecs_to_jiffies(100)
69 #define T_500MSEC       msecs_to_jiffies(500)
70
71 static void cm4000_release(struct pcmcia_device *link);
72
73 static int major;               /* major number we get from the kernel */
74
75 /* note: the first state has to have number 0 always */
76
77 #define M_FETCH_ATR     0
78 #define M_TIMEOUT_WAIT  1
79 #define M_READ_ATR_LEN  2
80 #define M_READ_ATR      3
81 #define M_ATR_PRESENT   4
82 #define M_BAD_CARD      5
83 #define M_CARDOFF       6
84
85 #define LOCK_IO                 0
86 #define LOCK_MONITOR            1
87
88 #define IS_AUTOPPS_ACT           6
89 #define IS_PROCBYTE_PRESENT      7
90 #define IS_INVREV                8
91 #define IS_ANY_T0                9
92 #define IS_ANY_T1               10
93 #define IS_ATR_PRESENT          11
94 #define IS_ATR_VALID            12
95 #define IS_CMM_ABSENT           13
96 #define IS_BAD_LENGTH           14
97 #define IS_BAD_CSUM             15
98 #define IS_BAD_CARD             16
99
100 #define REG_FLAGS0(x)           (x + 0)
101 #define REG_FLAGS1(x)           (x + 1)
102 #define REG_NUM_BYTES(x)        (x + 2)
103 #define REG_BUF_ADDR(x)         (x + 3)
104 #define REG_BUF_DATA(x)         (x + 4)
105 #define REG_NUM_SEND(x)         (x + 5)
106 #define REG_BAUDRATE(x)         (x + 6)
107 #define REG_STOPBITS(x)         (x + 7)
108
109 struct cm4000_dev {
110         struct pcmcia_device *p_dev;
111         dev_node_t node;                /* OS node (major,minor) */
112
113         unsigned char atr[MAX_ATR];
114         unsigned char rbuf[512];
115         unsigned char sbuf[512];
116
117         wait_queue_head_t devq;         /* when removing cardman must not be
118                                            zeroed! */
119
120         wait_queue_head_t ioq;          /* if IO is locked, wait on this Q */
121         wait_queue_head_t atrq;         /* wait for ATR valid */
122         wait_queue_head_t readq;        /* used by write to wake blk.read */
123
124         /* warning: do not move this fields.
125          * initialising to zero depends on it - see ZERO_DEV below.  */
126         unsigned char atr_csum;
127         unsigned char atr_len_retry;
128         unsigned short atr_len;
129         unsigned short rlen;    /* bytes avail. after write */
130         unsigned short rpos;    /* latest read pos. write zeroes */
131         unsigned char procbyte; /* T=0 procedure byte */
132         unsigned char mstate;   /* state of card monitor */
133         unsigned char cwarn;    /* slow down warning */
134         unsigned char flags0;   /* cardman IO-flags 0 */
135         unsigned char flags1;   /* cardman IO-flags 1 */
136         unsigned int mdelay;    /* variable monitor speeds, in jiffies */
137
138         unsigned int baudv;     /* baud value for speed */
139         unsigned char ta1;
140         unsigned char proto;    /* T=0, T=1, ... */
141         unsigned long flags;    /* lock+flags (MONITOR,IO,ATR) * for concurrent
142                                    access */
143
144         unsigned char pts[4];
145
146         struct timer_list timer;        /* used to keep monitor running */
147         int monitor_running;
148 };
149
150 #define ZERO_DEV(dev)                                           \
151         memset(&dev->atr_csum,0,                                \
152                 sizeof(struct cm4000_dev) -                     \
153                 offsetof(struct cm4000_dev, atr_csum))
154
155 static struct pcmcia_device *dev_table[CM4000_MAX_DEV];
156 static struct class *cmm_class;
157
158 /* This table doesn't use spaces after the comma between fields and thus
159  * violates CodingStyle.  However, I don't really think wrapping it around will
160  * make it any clearer to read -HW */
161 static unsigned char fi_di_table[10][14] = {
162 /*FI     00   01   02   03   04   05   06   07   08   09   10   11   12   13 */
163 /*DI */
164 /* 0 */ {0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11},
165 /* 1 */ {0x01,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x91,0x11,0x11,0x11,0x11},
166 /* 2 */ {0x02,0x12,0x22,0x32,0x11,0x11,0x11,0x11,0x11,0x92,0xA2,0xB2,0x11,0x11},
167 /* 3 */ {0x03,0x13,0x23,0x33,0x43,0x53,0x63,0x11,0x11,0x93,0xA3,0xB3,0xC3,0xD3},
168 /* 4 */ {0x04,0x14,0x24,0x34,0x44,0x54,0x64,0x11,0x11,0x94,0xA4,0xB4,0xC4,0xD4},
169 /* 5 */ {0x00,0x15,0x25,0x35,0x45,0x55,0x65,0x11,0x11,0x95,0xA5,0xB5,0xC5,0xD5},
170 /* 6 */ {0x06,0x16,0x26,0x36,0x46,0x56,0x66,0x11,0x11,0x96,0xA6,0xB6,0xC6,0xD6},
171 /* 7 */ {0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11},
172 /* 8 */ {0x08,0x11,0x28,0x38,0x48,0x58,0x68,0x11,0x11,0x98,0xA8,0xB8,0xC8,0xD8},
173 /* 9 */ {0x09,0x19,0x29,0x39,0x49,0x59,0x69,0x11,0x11,0x99,0xA9,0xB9,0xC9,0xD9}
174 };
175
176 #ifndef PCMCIA_DEBUG
177 #define xoutb   outb
178 #define xinb    inb
179 #else
180 static inline void xoutb(unsigned char val, unsigned short port)
181 {
182         if (pc_debug >= 7)
183                 printk(KERN_DEBUG "outb(val=%.2x,port=%.4x)\n", val, port);
184         outb(val, port);
185 }
186 static inline unsigned char xinb(unsigned short port)
187 {
188         unsigned char val;
189
190         val = inb(port);
191         if (pc_debug >= 7)
192                 printk(KERN_DEBUG "%.2x=inb(%.4x)\n", val, port);
193
194         return val;
195 }
196 #endif
197
198 static inline unsigned char invert_revert(unsigned char ch)
199 {
200         return bitrev8(~ch);
201 }
202
203 static void str_invert_revert(unsigned char *b, int len)
204 {
205         int i;
206
207         for (i = 0; i < len; i++)
208                 b[i] = invert_revert(b[i]);
209 }
210
211 #define ATRLENCK(dev,pos) \
212         if (pos>=dev->atr_len || pos>=MAX_ATR) \
213                 goto return_0;
214
215 static unsigned int calc_baudv(unsigned char fidi)
216 {
217         unsigned int wcrcf, wbrcf, fi_rfu, di_rfu;
218
219         fi_rfu = 372;
220         di_rfu = 1;
221
222         /* FI */
223         switch ((fidi >> 4) & 0x0F) {
224         case 0x00:
225                 wcrcf = 372;
226                 break;
227         case 0x01:
228                 wcrcf = 372;
229                 break;
230         case 0x02:
231                 wcrcf = 558;
232                 break;
233         case 0x03:
234                 wcrcf = 744;
235                 break;
236         case 0x04:
237                 wcrcf = 1116;
238                 break;
239         case 0x05:
240                 wcrcf = 1488;
241                 break;
242         case 0x06:
243                 wcrcf = 1860;
244                 break;
245         case 0x07:
246                 wcrcf = fi_rfu;
247                 break;
248         case 0x08:
249                 wcrcf = fi_rfu;
250                 break;
251         case 0x09:
252                 wcrcf = 512;
253                 break;
254         case 0x0A:
255                 wcrcf = 768;
256                 break;
257         case 0x0B:
258                 wcrcf = 1024;
259                 break;
260         case 0x0C:
261                 wcrcf = 1536;
262                 break;
263         case 0x0D:
264                 wcrcf = 2048;
265                 break;
266         default:
267                 wcrcf = fi_rfu;
268                 break;
269         }
270
271         /* DI */
272         switch (fidi & 0x0F) {
273         case 0x00:
274                 wbrcf = di_rfu;
275                 break;
276         case 0x01:
277                 wbrcf = 1;
278                 break;
279         case 0x02:
280                 wbrcf = 2;
281                 break;
282         case 0x03:
283                 wbrcf = 4;
284                 break;
285         case 0x04:
286                 wbrcf = 8;
287                 break;
288         case 0x05:
289                 wbrcf = 16;
290                 break;
291         case 0x06:
292                 wbrcf = 32;
293                 break;
294         case 0x07:
295                 wbrcf = di_rfu;
296                 break;
297         case 0x08:
298                 wbrcf = 12;
299                 break;
300         case 0x09:
301                 wbrcf = 20;
302                 break;
303         default:
304                 wbrcf = di_rfu;
305                 break;
306         }
307
308         return (wcrcf / wbrcf);
309 }
310
311 static unsigned short io_read_num_rec_bytes(unsigned int iobase,
312                                             unsigned short *s)
313 {
314         unsigned short tmp;
315
316         tmp = *s = 0;
317         do {
318                 *s = tmp;
319                 tmp = inb(REG_NUM_BYTES(iobase)) |
320                                 (inb(REG_FLAGS0(iobase)) & 4 ? 0x100 : 0);
321         } while (tmp != *s);
322
323         return *s;
324 }
325
326 static int parse_atr(struct cm4000_dev *dev)
327 {
328         unsigned char any_t1, any_t0;
329         unsigned char ch, ifno;
330         int ix, done;
331
332         DEBUGP(3, dev, "-> parse_atr: dev->atr_len = %i\n", dev->atr_len);
333
334         if (dev->atr_len < 3) {
335                 DEBUGP(5, dev, "parse_atr: atr_len < 3\n");
336                 return 0;
337         }
338
339         if (dev->atr[0] == 0x3f)
340                 set_bit(IS_INVREV, &dev->flags);
341         else
342                 clear_bit(IS_INVREV, &dev->flags);
343         ix = 1;
344         ifno = 1;
345         ch = dev->atr[1];
346         dev->proto = 0;         /* XXX PROTO */
347         any_t1 = any_t0 = done = 0;
348         dev->ta1 = 0x11;        /* defaults to 9600 baud */
349         do {
350                 if (ifno == 1 && (ch & 0x10)) {
351                         /* read first interface byte and TA1 is present */
352                         dev->ta1 = dev->atr[2];
353                         DEBUGP(5, dev, "Card says FiDi is 0x%.2x\n", dev->ta1);
354                         ifno++;
355                 } else if ((ifno == 2) && (ch & 0x10)) { /* TA(2) */
356                         dev->ta1 = 0x11;
357                         ifno++;
358                 }
359
360                 DEBUGP(5, dev, "Yi=%.2x\n", ch & 0xf0);
361                 ix += ((ch & 0x10) >> 4)        /* no of int.face chars */
362                     +((ch & 0x20) >> 5)
363                     + ((ch & 0x40) >> 6)
364                     + ((ch & 0x80) >> 7);
365                 /* ATRLENCK(dev,ix); */
366                 if (ch & 0x80) {        /* TDi */
367                         ch = dev->atr[ix];
368                         if ((ch & 0x0f)) {
369                                 any_t1 = 1;
370                                 DEBUGP(5, dev, "card is capable of T=1\n");
371                         } else {
372                                 any_t0 = 1;
373                                 DEBUGP(5, dev, "card is capable of T=0\n");
374                         }
375                 } else
376                         done = 1;
377         } while (!done);
378
379         DEBUGP(5, dev, "ix=%d noHist=%d any_t1=%d\n",
380               ix, dev->atr[1] & 15, any_t1);
381         if (ix + 1 + (dev->atr[1] & 0x0f) + any_t1 != dev->atr_len) {
382                 DEBUGP(5, dev, "length error\n");
383                 return 0;
384         }
385         if (any_t0)
386                 set_bit(IS_ANY_T0, &dev->flags);
387
388         if (any_t1) {           /* compute csum */
389                 dev->atr_csum = 0;
390 #ifdef ATR_CSUM
391                 for (i = 1; i < dev->atr_len; i++)
392                         dev->atr_csum ^= dev->atr[i];
393                 if (dev->atr_csum) {
394                         set_bit(IS_BAD_CSUM, &dev->flags);
395                         DEBUGP(5, dev, "bad checksum\n");
396                         goto return_0;
397                 }
398 #endif
399                 if (any_t0 == 0)
400                         dev->proto = 1; /* XXX PROTO */
401                 set_bit(IS_ANY_T1, &dev->flags);
402         }
403
404         return 1;
405 }
406
407 struct card_fixup {
408         char atr[12];
409         u_int8_t atr_len;
410         u_int8_t stopbits;
411 };
412
413 static struct card_fixup card_fixups[] = {
414         {       /* ACOS */
415                 .atr = { 0x3b, 0xb3, 0x11, 0x00, 0x00, 0x41, 0x01 },
416                 .atr_len = 7,
417                 .stopbits = 0x03,
418         },
419         {       /* Motorola */
420                 .atr = {0x3b, 0x76, 0x13, 0x00, 0x00, 0x80, 0x62, 0x07,
421                         0x41, 0x81, 0x81 },
422                 .atr_len = 11,
423                 .stopbits = 0x04,
424         },
425 };
426
427 static void set_cardparameter(struct cm4000_dev *dev)
428 {
429         int i;
430         unsigned int iobase = dev->p_dev->io.BasePort1;
431         u_int8_t stopbits = 0x02; /* ISO default */
432
433         DEBUGP(3, dev, "-> set_cardparameter\n");
434
435         dev->flags1 = dev->flags1 | (((dev->baudv - 1) & 0x0100) >> 8);
436         xoutb(dev->flags1, REG_FLAGS1(iobase));
437         DEBUGP(5, dev, "flags1 = 0x%02x\n", dev->flags1);
438
439         /* set baudrate */
440         xoutb((unsigned char)((dev->baudv - 1) & 0xFF), REG_BAUDRATE(iobase));
441
442         DEBUGP(5, dev, "baudv = %i -> write 0x%02x\n", dev->baudv,
443               ((dev->baudv - 1) & 0xFF));
444
445         /* set stopbits */
446         for (i = 0; i < ARRAY_SIZE(card_fixups); i++) {
447                 if (!memcmp(dev->atr, card_fixups[i].atr,
448                             card_fixups[i].atr_len))
449                         stopbits = card_fixups[i].stopbits;
450         }
451         xoutb(stopbits, REG_STOPBITS(iobase));
452
453         DEBUGP(3, dev, "<- set_cardparameter\n");
454 }
455
456 static int set_protocol(struct cm4000_dev *dev, struct ptsreq *ptsreq)
457 {
458
459         unsigned long tmp, i;
460         unsigned short num_bytes_read;
461         unsigned char pts_reply[4];
462         ssize_t rc;
463         unsigned int iobase = dev->p_dev->io.BasePort1;
464
465         rc = 0;
466
467         DEBUGP(3, dev, "-> set_protocol\n");
468         DEBUGP(5, dev, "ptsreq->Protocol = 0x%.8x, ptsreq->Flags=0x%.8x, "
469                  "ptsreq->pts1=0x%.2x, ptsreq->pts2=0x%.2x, "
470                  "ptsreq->pts3=0x%.2x\n", (unsigned int)ptsreq->protocol,
471                  (unsigned int)ptsreq->flags, ptsreq->pts1, ptsreq->pts2,
472                  ptsreq->pts3);
473
474         /* Fill PTS structure */
475         dev->pts[0] = 0xff;
476         dev->pts[1] = 0x00;
477         tmp = ptsreq->protocol;
478         while ((tmp = (tmp >> 1)) > 0)
479                 dev->pts[1]++;
480         dev->proto = dev->pts[1];       /* Set new protocol */
481         dev->pts[1] = (0x01 << 4) | (dev->pts[1]);
482
483         /* Correct Fi/Di according to CM4000 Fi/Di table */
484         DEBUGP(5, dev, "Ta(1) from ATR is 0x%.2x\n", dev->ta1);
485         /* set Fi/Di according to ATR TA(1) */
486         dev->pts[2] = fi_di_table[dev->ta1 & 0x0F][(dev->ta1 >> 4) & 0x0F];
487
488         /* Calculate PCK character */
489         dev->pts[3] = dev->pts[0] ^ dev->pts[1] ^ dev->pts[2];
490
491         DEBUGP(5, dev, "pts0=%.2x, pts1=%.2x, pts2=%.2x, pts3=%.2x\n",
492                dev->pts[0], dev->pts[1], dev->pts[2], dev->pts[3]);
493
494         /* check card convention */
495         if (test_bit(IS_INVREV, &dev->flags))
496                 str_invert_revert(dev->pts, 4);
497
498         /* reset SM */
499         xoutb(0x80, REG_FLAGS0(iobase));
500
501         /* Enable access to the message buffer */
502         DEBUGP(5, dev, "Enable access to the messages buffer\n");
503         dev->flags1 = 0x20      /* T_Active */
504             | (test_bit(IS_INVREV, &dev->flags) ? 0x02 : 0x00) /* inv parity */
505             | ((dev->baudv >> 8) & 0x01);       /* MSB-baud */
506         xoutb(dev->flags1, REG_FLAGS1(iobase));
507
508         DEBUGP(5, dev, "Enable message buffer -> flags1 = 0x%.2x\n",
509                dev->flags1);
510
511         /* write challenge to the buffer */
512         DEBUGP(5, dev, "Write challenge to buffer: ");
513         for (i = 0; i < 4; i++) {
514                 xoutb(i, REG_BUF_ADDR(iobase));
515                 xoutb(dev->pts[i], REG_BUF_DATA(iobase));       /* buf data */
516 #ifdef PCMCIA_DEBUG
517                 if (pc_debug >= 5)
518                         printk("0x%.2x ", dev->pts[i]);
519         }
520         if (pc_debug >= 5)
521                 printk("\n");
522 #else
523         }
524 #endif
525
526         /* set number of bytes to write */
527         DEBUGP(5, dev, "Set number of bytes to write\n");
528         xoutb(0x04, REG_NUM_SEND(iobase));
529
530         /* Trigger CARDMAN CONTROLLER */
531         xoutb(0x50, REG_FLAGS0(iobase));
532
533         /* Monitor progress */
534         /* wait for xmit done */
535         DEBUGP(5, dev, "Waiting for NumRecBytes getting valid\n");
536
537         for (i = 0; i < 100; i++) {
538                 if (inb(REG_FLAGS0(iobase)) & 0x08) {
539                         DEBUGP(5, dev, "NumRecBytes is valid\n");
540                         break;
541                 }
542                 mdelay(10);
543         }
544         if (i == 100) {
545                 DEBUGP(5, dev, "Timeout waiting for NumRecBytes getting "
546                        "valid\n");
547                 rc = -EIO;
548                 goto exit_setprotocol;
549         }
550
551         DEBUGP(5, dev, "Reading NumRecBytes\n");
552         for (i = 0; i < 100; i++) {
553                 io_read_num_rec_bytes(iobase, &num_bytes_read);
554                 if (num_bytes_read >= 4) {
555                         DEBUGP(2, dev, "NumRecBytes = %i\n", num_bytes_read);
556                         break;
557                 }
558                 mdelay(10);
559         }
560
561         /* check whether it is a short PTS reply? */
562         if (num_bytes_read == 3)
563                 i = 0;
564
565         if (i == 100) {
566                 DEBUGP(5, dev, "Timeout reading num_bytes_read\n");
567                 rc = -EIO;
568                 goto exit_setprotocol;
569         }
570
571         DEBUGP(5, dev, "Reset the CARDMAN CONTROLLER\n");
572         xoutb(0x80, REG_FLAGS0(iobase));
573
574         /* Read PPS reply */
575         DEBUGP(5, dev, "Read PPS reply\n");
576         for (i = 0; i < num_bytes_read; i++) {
577                 xoutb(i, REG_BUF_ADDR(iobase));
578                 pts_reply[i] = inb(REG_BUF_DATA(iobase));
579         }
580
581 #ifdef PCMCIA_DEBUG
582         DEBUGP(2, dev, "PTSreply: ");
583         for (i = 0; i < num_bytes_read; i++) {
584                 if (pc_debug >= 5)
585                         printk("0x%.2x ", pts_reply[i]);
586         }
587         printk("\n");
588 #endif  /* PCMCIA_DEBUG */
589
590         DEBUGP(5, dev, "Clear Tactive in Flags1\n");
591         xoutb(0x20, REG_FLAGS1(iobase));
592
593         /* Compare ptsreq and ptsreply */
594         if ((dev->pts[0] == pts_reply[0]) &&
595             (dev->pts[1] == pts_reply[1]) &&
596             (dev->pts[2] == pts_reply[2]) && (dev->pts[3] == pts_reply[3])) {
597                 /* setcardparameter according to PPS */
598                 dev->baudv = calc_baudv(dev->pts[2]);
599                 set_cardparameter(dev);
600         } else if ((dev->pts[0] == pts_reply[0]) &&
601                    ((dev->pts[1] & 0xef) == pts_reply[1]) &&
602                    ((pts_reply[0] ^ pts_reply[1]) == pts_reply[2])) {
603                 /* short PTS reply, set card parameter to default values */
604                 dev->baudv = calc_baudv(0x11);
605                 set_cardparameter(dev);
606         } else
607                 rc = -EIO;
608
609 exit_setprotocol:
610         DEBUGP(3, dev, "<- set_protocol\n");
611         return rc;
612 }
613
614 static int io_detect_cm4000(unsigned int iobase, struct cm4000_dev *dev)
615 {
616
617         /* note: statemachine is assumed to be reset */
618         if (inb(REG_FLAGS0(iobase)) & 8) {
619                 clear_bit(IS_ATR_VALID, &dev->flags);
620                 set_bit(IS_CMM_ABSENT, &dev->flags);
621                 return 0;       /* detect CMM = 1 -> failure */
622         }
623         /* xoutb(0x40, REG_FLAGS1(iobase)); detectCMM */
624         xoutb(dev->flags1 | 0x40, REG_FLAGS1(iobase));
625         if ((inb(REG_FLAGS0(iobase)) & 8) == 0) {
626                 clear_bit(IS_ATR_VALID, &dev->flags);
627                 set_bit(IS_CMM_ABSENT, &dev->flags);
628                 return 0;       /* detect CMM=0 -> failure */
629         }
630         /* clear detectCMM again by restoring original flags1 */
631         xoutb(dev->flags1, REG_FLAGS1(iobase));
632         return 1;
633 }
634
635 static void terminate_monitor(struct cm4000_dev *dev)
636 {
637
638         /* tell the monitor to stop and wait until
639          * it terminates.
640          */
641         DEBUGP(3, dev, "-> terminate_monitor\n");
642         wait_event_interruptible(dev->devq,
643                                  test_and_set_bit(LOCK_MONITOR,
644                                                   (void *)&dev->flags));
645
646         /* now, LOCK_MONITOR has been set.
647          * allow a last cycle in the monitor.
648          * the monitor will indicate that it has
649          * finished by clearing this bit.
650          */
651         DEBUGP(5, dev, "Now allow last cycle of monitor!\n");
652         while (test_bit(LOCK_MONITOR, (void *)&dev->flags))
653                 msleep(25);
654
655         DEBUGP(5, dev, "Delete timer\n");
656         del_timer_sync(&dev->timer);
657 #ifdef PCMCIA_DEBUG
658         dev->monitor_running = 0;
659 #endif
660
661         DEBUGP(3, dev, "<- terminate_monitor\n");
662 }
663
664 /*
665  * monitor the card every 50msec. as a side-effect, retrieve the
666  * atr once a card is inserted. another side-effect of retrieving the
667  * atr is that the card will be powered on, so there is no need to
668  * power on the card explictely from the application: the driver
669  * is already doing that for you.
670  */
671
672 static void monitor_card(unsigned long p)
673 {
674         struct cm4000_dev *dev = (struct cm4000_dev *) p;
675         unsigned int iobase = dev->p_dev->io.BasePort1;
676         unsigned short s;
677         struct ptsreq ptsreq;
678         int i, atrc;
679
680         DEBUGP(7, dev, "->  monitor_card\n");
681
682         /* if someone has set the lock for us: we're done! */
683         if (test_and_set_bit(LOCK_MONITOR, &dev->flags)) {
684                 DEBUGP(4, dev, "About to stop monitor\n");
685                 /* no */
686                 dev->rlen =
687                     dev->rpos =
688                     dev->atr_csum = dev->atr_len_retry = dev->cwarn = 0;
689                 dev->mstate = M_FETCH_ATR;
690                 clear_bit(LOCK_MONITOR, &dev->flags);
691                 /* close et al. are sleeping on devq, so wake it */
692                 wake_up_interruptible(&dev->devq);
693                 DEBUGP(2, dev, "<- monitor_card (we are done now)\n");
694                 return;
695         }
696
697         /* try to lock io: if it is already locked, just add another timer */
698         if (test_and_set_bit(LOCK_IO, (void *)&dev->flags)) {
699                 DEBUGP(4, dev, "Couldn't get IO lock\n");
700                 goto return_with_timer;
701         }
702
703         /* is a card/a reader inserted at all ? */
704         dev->flags0 = xinb(REG_FLAGS0(iobase));
705         DEBUGP(7, dev, "dev->flags0 = 0x%2x\n", dev->flags0);
706         DEBUGP(7, dev, "smartcard present: %s\n",
707                dev->flags0 & 1 ? "yes" : "no");
708         DEBUGP(7, dev, "cardman present: %s\n",
709                dev->flags0 == 0xff ? "no" : "yes");
710
711         if ((dev->flags0 & 1) == 0      /* no smartcard inserted */
712             || dev->flags0 == 0xff) {   /* no cardman inserted */
713                 /* no */
714                 dev->rlen =
715                     dev->rpos =
716                     dev->atr_csum = dev->atr_len_retry = dev->cwarn = 0;
717                 dev->mstate = M_FETCH_ATR;
718
719                 dev->flags &= 0x000000ff; /* only keep IO and MONITOR locks */
720
721                 if (dev->flags0 == 0xff) {
722                         DEBUGP(4, dev, "set IS_CMM_ABSENT bit\n");
723                         set_bit(IS_CMM_ABSENT, &dev->flags);
724                 } else if (test_bit(IS_CMM_ABSENT, &dev->flags)) {
725                         DEBUGP(4, dev, "clear IS_CMM_ABSENT bit "
726                                "(card is removed)\n");
727                         clear_bit(IS_CMM_ABSENT, &dev->flags);
728                 }
729
730                 goto release_io;
731         } else if ((dev->flags0 & 1) && test_bit(IS_CMM_ABSENT, &dev->flags)) {
732                 /* cardman and card present but cardman was absent before
733                  * (after suspend with inserted card) */
734                 DEBUGP(4, dev, "clear IS_CMM_ABSENT bit (card is inserted)\n");
735                 clear_bit(IS_CMM_ABSENT, &dev->flags);
736         }
737
738         if (test_bit(IS_ATR_VALID, &dev->flags) == 1) {
739                 DEBUGP(7, dev, "believe ATR is already valid (do nothing)\n");
740                 goto release_io;
741         }
742
743         switch (dev->mstate) {
744                 unsigned char flags0;
745         case M_CARDOFF:
746                 DEBUGP(4, dev, "M_CARDOFF\n");
747                 flags0 = inb(REG_FLAGS0(iobase));
748                 if (flags0 & 0x02) {
749                         /* wait until Flags0 indicate power is off */
750                         dev->mdelay = T_10MSEC;
751                 } else {
752                         /* Flags0 indicate power off and no card inserted now;
753                          * Reset CARDMAN CONTROLLER */
754                         xoutb(0x80, REG_FLAGS0(iobase));
755
756                         /* prepare for fetching ATR again: after card off ATR
757                          * is read again automatically */
758                         dev->rlen =
759                             dev->rpos =
760                             dev->atr_csum =
761                             dev->atr_len_retry = dev->cwarn = 0;
762                         dev->mstate = M_FETCH_ATR;
763
764                         /* minimal gap between CARDOFF and read ATR is 50msec */
765                         dev->mdelay = T_50MSEC;
766                 }
767                 break;
768         case M_FETCH_ATR:
769                 DEBUGP(4, dev, "M_FETCH_ATR\n");
770                 xoutb(0x80, REG_FLAGS0(iobase));
771                 DEBUGP(4, dev, "Reset BAUDV to 9600\n");
772                 dev->baudv = 0x173;     /* 9600 */
773                 xoutb(0x02, REG_STOPBITS(iobase));      /* stopbits=2 */
774                 xoutb(0x73, REG_BAUDRATE(iobase));      /* baud value */
775                 xoutb(0x21, REG_FLAGS1(iobase));        /* T_Active=1, baud
776                                                            value */
777                 /* warm start vs. power on: */
778                 xoutb(dev->flags0 & 2 ? 0x46 : 0x44, REG_FLAGS0(iobase));
779                 dev->mdelay = T_40MSEC;
780                 dev->mstate = M_TIMEOUT_WAIT;
781                 break;
782         case M_TIMEOUT_WAIT:
783                 DEBUGP(4, dev, "M_TIMEOUT_WAIT\n");
784                 /* numRecBytes */
785                 io_read_num_rec_bytes(iobase, &dev->atr_len);
786                 dev->mdelay = T_10MSEC;
787                 dev->mstate = M_READ_ATR_LEN;
788                 break;
789         case M_READ_ATR_LEN:
790                 DEBUGP(4, dev, "M_READ_ATR_LEN\n");
791                 /* infinite loop possible, since there is no timeout */
792
793 #define MAX_ATR_LEN_RETRY       100
794
795                 if (dev->atr_len == io_read_num_rec_bytes(iobase, &s)) {
796                         if (dev->atr_len_retry++ >= MAX_ATR_LEN_RETRY) {                                        /* + XX msec */
797                                 dev->mdelay = T_10MSEC;
798                                 dev->mstate = M_READ_ATR;
799                         }
800                 } else {
801                         dev->atr_len = s;
802                         dev->atr_len_retry = 0; /* set new timeout */
803                 }
804
805                 DEBUGP(4, dev, "Current ATR_LEN = %i\n", dev->atr_len);
806                 break;
807         case M_READ_ATR:
808                 DEBUGP(4, dev, "M_READ_ATR\n");
809                 xoutb(0x80, REG_FLAGS0(iobase));        /* reset SM */
810                 for (i = 0; i < dev->atr_len; i++) {
811                         xoutb(i, REG_BUF_ADDR(iobase));
812                         dev->atr[i] = inb(REG_BUF_DATA(iobase));
813                 }
814                 /* Deactivate T_Active flags */
815                 DEBUGP(4, dev, "Deactivate T_Active flags\n");
816                 dev->flags1 = 0x01;
817                 xoutb(dev->flags1, REG_FLAGS1(iobase));
818
819                 /* atr is present (which doesnt mean it's valid) */
820                 set_bit(IS_ATR_PRESENT, &dev->flags);
821                 if (dev->atr[0] == 0x03)
822                         str_invert_revert(dev->atr, dev->atr_len);
823                 atrc = parse_atr(dev);
824                 if (atrc == 0) {        /* atr invalid */
825                         dev->mdelay = 0;
826                         dev->mstate = M_BAD_CARD;
827                 } else {
828                         dev->mdelay = T_50MSEC;
829                         dev->mstate = M_ATR_PRESENT;
830                         set_bit(IS_ATR_VALID, &dev->flags);
831                 }
832
833                 if (test_bit(IS_ATR_VALID, &dev->flags) == 1) {
834                         DEBUGP(4, dev, "monitor_card: ATR valid\n");
835                         /* if ta1 == 0x11, no PPS necessary (default values) */
836                         /* do not do PPS with multi protocol cards */
837                         if ((test_bit(IS_AUTOPPS_ACT, &dev->flags) == 0) &&
838                             (dev->ta1 != 0x11) &&
839                             !(test_bit(IS_ANY_T0, &dev->flags) &&
840                             test_bit(IS_ANY_T1, &dev->flags))) {
841                                 DEBUGP(4, dev, "Perform AUTOPPS\n");
842                                 set_bit(IS_AUTOPPS_ACT, &dev->flags);
843                                 ptsreq.protocol = ptsreq.protocol =
844                                     (0x01 << dev->proto);
845                                 ptsreq.flags = 0x01;
846                                 ptsreq.pts1 = 0x00;
847                                 ptsreq.pts2 = 0x00;
848                                 ptsreq.pts3 = 0x00;
849                                 if (set_protocol(dev, &ptsreq) == 0) {
850                                         DEBUGP(4, dev, "AUTOPPS ret SUCC\n");
851                                         clear_bit(IS_AUTOPPS_ACT, &dev->flags);
852                                         wake_up_interruptible(&dev->atrq);
853                                 } else {
854                                         DEBUGP(4, dev, "AUTOPPS failed: "
855                                                "repower using defaults\n");
856                                         /* prepare for repowering  */
857                                         clear_bit(IS_ATR_PRESENT, &dev->flags);
858                                         clear_bit(IS_ATR_VALID, &dev->flags);
859                                         dev->rlen =
860                                             dev->rpos =
861                                             dev->atr_csum =
862                                             dev->atr_len_retry = dev->cwarn = 0;
863                                         dev->mstate = M_FETCH_ATR;
864
865                                         dev->mdelay = T_50MSEC;
866                                 }
867                         } else {
868                                 /* for cards which use slightly different
869                                  * params (extra guard time) */
870                                 set_cardparameter(dev);
871                                 if (test_bit(IS_AUTOPPS_ACT, &dev->flags) == 1)
872                                         DEBUGP(4, dev, "AUTOPPS already active "
873                                                "2nd try:use default values\n");
874                                 if (dev->ta1 == 0x11)
875                                         DEBUGP(4, dev, "No AUTOPPS necessary "
876                                                "TA(1)==0x11\n");
877                                 if (test_bit(IS_ANY_T0, &dev->flags)
878                                     && test_bit(IS_ANY_T1, &dev->flags))
879                                         DEBUGP(4, dev, "Do NOT perform AUTOPPS "
880                                                "with multiprotocol cards\n");
881                                 clear_bit(IS_AUTOPPS_ACT, &dev->flags);
882                                 wake_up_interruptible(&dev->atrq);
883                         }
884                 } else {
885                         DEBUGP(4, dev, "ATR invalid\n");
886                         wake_up_interruptible(&dev->atrq);
887                 }
888                 break;
889         case M_BAD_CARD:
890                 DEBUGP(4, dev, "M_BAD_CARD\n");
891                 /* slow down warning, but prompt immediately after insertion */
892                 if (dev->cwarn == 0 || dev->cwarn == 10) {
893                         set_bit(IS_BAD_CARD, &dev->flags);
894                         printk(KERN_WARNING MODULE_NAME ": device %s: ",
895                                dev->node.dev_name);
896                         if (test_bit(IS_BAD_CSUM, &dev->flags)) {
897                                 DEBUGP(4, dev, "ATR checksum (0x%.2x, should "
898                                        "be zero) failed\n", dev->atr_csum);
899                         }
900 #ifdef PCMCIA_DEBUG
901                         else if (test_bit(IS_BAD_LENGTH, &dev->flags)) {
902                                 DEBUGP(4, dev, "ATR length error\n");
903                         } else {
904                                 DEBUGP(4, dev, "card damaged or wrong way "
905                                         "inserted\n");
906                         }
907 #endif
908                         dev->cwarn = 0;
909                         wake_up_interruptible(&dev->atrq);      /* wake open */
910                 }
911                 dev->cwarn++;
912                 dev->mdelay = T_100MSEC;
913                 dev->mstate = M_FETCH_ATR;
914                 break;
915         default:
916                 DEBUGP(7, dev, "Unknown action\n");
917                 break;          /* nothing */
918         }
919
920 release_io:
921         DEBUGP(7, dev, "release_io\n");
922         clear_bit(LOCK_IO, &dev->flags);
923         wake_up_interruptible(&dev->ioq);       /* whoever needs IO */
924
925 return_with_timer:
926         DEBUGP(7, dev, "<- monitor_card (returns with timer)\n");
927         mod_timer(&dev->timer, jiffies + dev->mdelay);
928         clear_bit(LOCK_MONITOR, &dev->flags);
929 }
930
931 /* Interface to userland (file_operations) */
932
933 static ssize_t cmm_read(struct file *filp, __user char *buf, size_t count,
934                         loff_t *ppos)
935 {
936         struct cm4000_dev *dev = filp->private_data;
937         unsigned int iobase = dev->p_dev->io.BasePort1;
938         ssize_t rc;
939         int i, j, k;
940
941         DEBUGP(2, dev, "-> cmm_read(%s,%d)\n", current->comm, current->pid);
942
943         if (count == 0)         /* according to manpage */
944                 return 0;
945
946         if (!pcmcia_dev_present(dev->p_dev) || /* device removed */
947             test_bit(IS_CMM_ABSENT, &dev->flags))
948                 return -ENODEV;
949
950         if (test_bit(IS_BAD_CSUM, &dev->flags))
951                 return -EIO;
952
953         /* also see the note about this in cmm_write */
954         if (wait_event_interruptible
955             (dev->atrq,
956              ((filp->f_flags & O_NONBLOCK)
957               || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags) != 0)))) {
958                 if (filp->f_flags & O_NONBLOCK)
959                         return -EAGAIN;
960                 return -ERESTARTSYS;
961         }
962
963         if (test_bit(IS_ATR_VALID, &dev->flags) == 0)
964                 return -EIO;
965
966         /* this one implements blocking IO */
967         if (wait_event_interruptible
968             (dev->readq,
969              ((filp->f_flags & O_NONBLOCK) || (dev->rpos < dev->rlen)))) {
970                 if (filp->f_flags & O_NONBLOCK)
971                         return -EAGAIN;
972                 return -ERESTARTSYS;
973         }
974
975         /* lock io */
976         if (wait_event_interruptible
977             (dev->ioq,
978              ((filp->f_flags & O_NONBLOCK)
979               || (test_and_set_bit(LOCK_IO, (void *)&dev->flags) == 0)))) {
980                 if (filp->f_flags & O_NONBLOCK)
981                         return -EAGAIN;
982                 return -ERESTARTSYS;
983         }
984
985         rc = 0;
986         dev->flags0 = inb(REG_FLAGS0(iobase));
987         if ((dev->flags0 & 1) == 0      /* no smartcard inserted */
988             || dev->flags0 == 0xff) {   /* no cardman inserted */
989                 clear_bit(IS_ATR_VALID, &dev->flags);
990                 if (dev->flags0 & 1) {
991                         set_bit(IS_CMM_ABSENT, &dev->flags);
992                         rc = -ENODEV;
993                 }
994                 rc = -EIO;
995                 goto release_io;
996         }
997
998         DEBUGP(4, dev, "begin read answer\n");
999         j = min(count, (size_t)(dev->rlen - dev->rpos));
1000         k = dev->rpos;
1001         if (k + j > 255)
1002                 j = 256 - k;
1003         DEBUGP(4, dev, "read1 j=%d\n", j);
1004         for (i = 0; i < j; i++) {
1005                 xoutb(k++, REG_BUF_ADDR(iobase));
1006                 dev->rbuf[i] = xinb(REG_BUF_DATA(iobase));
1007         }
1008         j = min(count, (size_t)(dev->rlen - dev->rpos));
1009         if (k + j > 255) {
1010                 DEBUGP(4, dev, "read2 j=%d\n", j);
1011                 dev->flags1 |= 0x10;    /* MSB buf addr set */
1012                 xoutb(dev->flags1, REG_FLAGS1(iobase));
1013                 for (; i < j; i++) {
1014                         xoutb(k++, REG_BUF_ADDR(iobase));
1015                         dev->rbuf[i] = xinb(REG_BUF_DATA(iobase));
1016                 }
1017         }
1018
1019         if (dev->proto == 0 && count > dev->rlen - dev->rpos) {
1020                 DEBUGP(4, dev, "T=0 and count > buffer\n");
1021                 dev->rbuf[i] = dev->rbuf[i - 1];
1022                 dev->rbuf[i - 1] = dev->procbyte;
1023                 j++;
1024         }
1025         count = j;
1026
1027         dev->rpos = dev->rlen + 1;
1028
1029         /* Clear T1Active */
1030         DEBUGP(4, dev, "Clear T1Active\n");
1031         dev->flags1 &= 0xdf;
1032         xoutb(dev->flags1, REG_FLAGS1(iobase));
1033
1034         xoutb(0, REG_FLAGS1(iobase));   /* clear detectCMM */
1035         /* last check before exit */
1036         if (!io_detect_cm4000(iobase, dev))
1037                 count = -ENODEV;
1038
1039         if (test_bit(IS_INVREV, &dev->flags) && count > 0)
1040                 str_invert_revert(dev->rbuf, count);
1041
1042         if (copy_to_user(buf, dev->rbuf, count))
1043                 return -EFAULT;
1044
1045 release_io:
1046         clear_bit(LOCK_IO, &dev->flags);
1047         wake_up_interruptible(&dev->ioq);
1048
1049         DEBUGP(2, dev, "<- cmm_read returns: rc = %Zi\n",
1050                (rc < 0 ? rc : count));
1051         return rc < 0 ? rc : count;
1052 }
1053
1054 static ssize_t cmm_write(struct file *filp, const char __user *buf,
1055                          size_t count, loff_t *ppos)
1056 {
1057         struct cm4000_dev *dev = (struct cm4000_dev *) filp->private_data;
1058         unsigned int iobase = dev->p_dev->io.BasePort1;
1059         unsigned short s;
1060         unsigned char tmp;
1061         unsigned char infolen;
1062         unsigned char sendT0;
1063         unsigned short nsend;
1064         unsigned short nr;
1065         ssize_t rc;
1066         int i;
1067
1068         DEBUGP(2, dev, "-> cmm_write(%s,%d)\n", current->comm, current->pid);
1069
1070         if (count == 0)         /* according to manpage */
1071                 return 0;
1072
1073         if (dev->proto == 0 && count < 4) {
1074                 /* T0 must have at least 4 bytes */
1075                 DEBUGP(4, dev, "T0 short write\n");
1076                 return -EIO;
1077         }
1078
1079         nr = count & 0x1ff;     /* max bytes to write */
1080
1081         sendT0 = dev->proto ? 0 : nr > 5 ? 0x08 : 0;
1082
1083         if (!pcmcia_dev_present(dev->p_dev) || /* device removed */
1084             test_bit(IS_CMM_ABSENT, &dev->flags))
1085                 return -ENODEV;
1086
1087         if (test_bit(IS_BAD_CSUM, &dev->flags)) {
1088                 DEBUGP(4, dev, "bad csum\n");
1089                 return -EIO;
1090         }
1091
1092         /*
1093          * wait for atr to become valid.
1094          * note: it is important to lock this code. if we dont, the monitor
1095          * could be run between test_bit and the call to sleep on the
1096          * atr-queue.  if *then* the monitor detects atr valid, it will wake up
1097          * any process on the atr-queue, *but* since we have been interrupted,
1098          * we do not yet sleep on this queue. this would result in a missed
1099          * wake_up and the calling process would sleep forever (until
1100          * interrupted).  also, do *not* restore_flags before sleep_on, because
1101          * this could result in the same situation!
1102          */
1103         if (wait_event_interruptible
1104             (dev->atrq,
1105              ((filp->f_flags & O_NONBLOCK)
1106               || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags) != 0)))) {
1107                 if (filp->f_flags & O_NONBLOCK)
1108                         return -EAGAIN;
1109                 return -ERESTARTSYS;
1110         }
1111
1112         if (test_bit(IS_ATR_VALID, &dev->flags) == 0) { /* invalid atr */
1113                 DEBUGP(4, dev, "invalid ATR\n");
1114                 return -EIO;
1115         }
1116
1117         /* lock io */
1118         if (wait_event_interruptible
1119             (dev->ioq,
1120              ((filp->f_flags & O_NONBLOCK)
1121               || (test_and_set_bit(LOCK_IO, (void *)&dev->flags) == 0)))) {
1122                 if (filp->f_flags & O_NONBLOCK)
1123                         return -EAGAIN;
1124                 return -ERESTARTSYS;
1125         }
1126
1127         if (copy_from_user(dev->sbuf, buf, ((count > 512) ? 512 : count)))
1128                 return -EFAULT;
1129
1130         rc = 0;
1131         dev->flags0 = inb(REG_FLAGS0(iobase));
1132         if ((dev->flags0 & 1) == 0      /* no smartcard inserted */
1133             || dev->flags0 == 0xff) {   /* no cardman inserted */
1134                 clear_bit(IS_ATR_VALID, &dev->flags);
1135                 if (dev->flags0 & 1) {
1136                         set_bit(IS_CMM_ABSENT, &dev->flags);
1137                         rc = -ENODEV;
1138                 } else {
1139                         DEBUGP(4, dev, "IO error\n");
1140                         rc = -EIO;
1141                 }
1142                 goto release_io;
1143         }
1144
1145         xoutb(0x80, REG_FLAGS0(iobase));        /* reset SM  */
1146
1147         if (!io_detect_cm4000(iobase, dev)) {
1148                 rc = -ENODEV;
1149                 goto release_io;
1150         }
1151
1152         /* reflect T=0 send/read mode in flags1 */
1153         dev->flags1 |= (sendT0);
1154
1155         set_cardparameter(dev);
1156
1157         /* dummy read, reset flag procedure received */
1158         tmp = inb(REG_FLAGS1(iobase));
1159
1160         dev->flags1 = 0x20      /* T_Active */
1161             | (sendT0)
1162             | (test_bit(IS_INVREV, &dev->flags) ? 2 : 0)/* inverse parity  */
1163             | (((dev->baudv - 1) & 0x0100) >> 8);       /* MSB-Baud */
1164         DEBUGP(1, dev, "set dev->flags1 = 0x%.2x\n", dev->flags1);
1165         xoutb(dev->flags1, REG_FLAGS1(iobase));
1166
1167         /* xmit data */
1168         DEBUGP(4, dev, "Xmit data\n");
1169         for (i = 0; i < nr; i++) {
1170                 if (i >= 256) {
1171                         dev->flags1 = 0x20      /* T_Active */
1172                             | (sendT0)  /* SendT0 */
1173                                 /* inverse parity: */
1174                             | (test_bit(IS_INVREV, &dev->flags) ? 2 : 0)
1175                             | (((dev->baudv - 1) & 0x0100) >> 8) /* MSB-Baud */
1176                             | 0x10;     /* set address high */
1177                         DEBUGP(4, dev, "dev->flags = 0x%.2x - set address "
1178                                "high\n", dev->flags1);
1179                         xoutb(dev->flags1, REG_FLAGS1(iobase));
1180                 }
1181                 if (test_bit(IS_INVREV, &dev->flags)) {
1182                         DEBUGP(4, dev, "Apply inverse convention for 0x%.2x "
1183                                 "-> 0x%.2x\n", (unsigned char)dev->sbuf[i],
1184                               invert_revert(dev->sbuf[i]));
1185                         xoutb(i, REG_BUF_ADDR(iobase));
1186                         xoutb(invert_revert(dev->sbuf[i]),
1187                               REG_BUF_DATA(iobase));
1188                 } else {
1189                         xoutb(i, REG_BUF_ADDR(iobase));
1190                         xoutb(dev->sbuf[i], REG_BUF_DATA(iobase));
1191                 }
1192         }
1193         DEBUGP(4, dev, "Xmit done\n");
1194
1195         if (dev->proto == 0) {
1196                 /* T=0 proto: 0 byte reply  */
1197                 if (nr == 4) {
1198                         DEBUGP(4, dev, "T=0 assumes 0 byte reply\n");
1199                         xoutb(i, REG_BUF_ADDR(iobase));
1200                         if (test_bit(IS_INVREV, &dev->flags))
1201                                 xoutb(0xff, REG_BUF_DATA(iobase));
1202                         else
1203                                 xoutb(0x00, REG_BUF_DATA(iobase));
1204                 }
1205
1206                 /* numSendBytes */
1207                 if (sendT0)
1208                         nsend = nr;
1209                 else {
1210                         if (nr == 4)
1211                                 nsend = 5;
1212                         else {
1213                                 nsend = 5 + (unsigned char)dev->sbuf[4];
1214                                 if (dev->sbuf[4] == 0)
1215                                         nsend += 0x100;
1216                         }
1217                 }
1218         } else
1219                 nsend = nr;
1220
1221         /* T0: output procedure byte */
1222         if (test_bit(IS_INVREV, &dev->flags)) {
1223                 DEBUGP(4, dev, "T=0 set Procedure byte (inverse-reverse) "
1224                        "0x%.2x\n", invert_revert(dev->sbuf[1]));
1225                 xoutb(invert_revert(dev->sbuf[1]), REG_NUM_BYTES(iobase));
1226         } else {
1227                 DEBUGP(4, dev, "T=0 set Procedure byte 0x%.2x\n", dev->sbuf[1]);
1228                 xoutb(dev->sbuf[1], REG_NUM_BYTES(iobase));
1229         }
1230
1231         DEBUGP(1, dev, "set NumSendBytes = 0x%.2x\n",
1232                (unsigned char)(nsend & 0xff));
1233         xoutb((unsigned char)(nsend & 0xff), REG_NUM_SEND(iobase));
1234
1235         DEBUGP(1, dev, "Trigger CARDMAN CONTROLLER (0x%.2x)\n",
1236                0x40     /* SM_Active */
1237               | (dev->flags0 & 2 ? 0 : 4)       /* power on if needed */
1238               |(dev->proto ? 0x10 : 0x08)       /* T=1/T=0 */
1239               |(nsend & 0x100) >> 8 /* MSB numSendBytes */ );
1240         xoutb(0x40              /* SM_Active */
1241               | (dev->flags0 & 2 ? 0 : 4)       /* power on if needed */
1242               |(dev->proto ? 0x10 : 0x08)       /* T=1/T=0 */
1243               |(nsend & 0x100) >> 8,    /* MSB numSendBytes */
1244               REG_FLAGS0(iobase));
1245
1246         /* wait for xmit done */
1247         if (dev->proto == 1) {
1248                 DEBUGP(4, dev, "Wait for xmit done\n");
1249                 for (i = 0; i < 1000; i++) {
1250                         if (inb(REG_FLAGS0(iobase)) & 0x08)
1251                                 break;
1252                         msleep_interruptible(10);
1253                 }
1254                 if (i == 1000) {
1255                         DEBUGP(4, dev, "timeout waiting for xmit done\n");
1256                         rc = -EIO;
1257                         goto release_io;
1258                 }
1259         }
1260
1261         /* T=1: wait for infoLen */
1262
1263         infolen = 0;
1264         if (dev->proto) {
1265                 /* wait until infoLen is valid */
1266                 for (i = 0; i < 6000; i++) {    /* max waiting time of 1 min */
1267                         io_read_num_rec_bytes(iobase, &s);
1268                         if (s >= 3) {
1269                                 infolen = inb(REG_FLAGS1(iobase));
1270                                 DEBUGP(4, dev, "infolen=%d\n", infolen);
1271                                 break;
1272                         }
1273                         msleep_interruptible(10);
1274                 }
1275                 if (i == 6000) {
1276                         DEBUGP(4, dev, "timeout waiting for infoLen\n");
1277                         rc = -EIO;
1278                         goto release_io;
1279                 }
1280         } else
1281                 clear_bit(IS_PROCBYTE_PRESENT, &dev->flags);
1282
1283         /* numRecBytes | bit9 of numRecytes */
1284         io_read_num_rec_bytes(iobase, &dev->rlen);
1285         for (i = 0; i < 600; i++) {     /* max waiting time of 2 sec */
1286                 if (dev->proto) {
1287                         if (dev->rlen >= infolen + 4)
1288                                 break;
1289                 }
1290                 msleep_interruptible(10);
1291                 /* numRecBytes | bit9 of numRecytes */
1292                 io_read_num_rec_bytes(iobase, &s);
1293                 if (s > dev->rlen) {
1294                         DEBUGP(1, dev, "NumRecBytes inc (reset timeout)\n");
1295                         i = 0;  /* reset timeout */
1296                         dev->rlen = s;
1297                 }
1298                 /* T=0: we are done when numRecBytes doesn't
1299                  *      increment any more and NoProcedureByte
1300                  *      is set and numRecBytes == bytes sent + 6
1301                  *      (header bytes + data + 1 for sw2)
1302                  *      except when the card replies an error
1303                  *      which means, no data will be sent back.
1304                  */
1305                 else if (dev->proto == 0) {
1306                         if ((inb(REG_BUF_ADDR(iobase)) & 0x80)) {
1307                                 /* no procedure byte received since last read */
1308                                 DEBUGP(1, dev, "NoProcedure byte set\n");
1309                                 /* i=0; */
1310                         } else {
1311                                 /* procedure byte received since last read */
1312                                 DEBUGP(1, dev, "NoProcedure byte unset "
1313                                         "(reset timeout)\n");
1314                                 dev->procbyte = inb(REG_FLAGS1(iobase));
1315                                 DEBUGP(1, dev, "Read procedure byte 0x%.2x\n",
1316                                       dev->procbyte);
1317                                 i = 0;  /* resettimeout */
1318                         }
1319                         if (inb(REG_FLAGS0(iobase)) & 0x08) {
1320                                 DEBUGP(1, dev, "T0Done flag (read reply)\n");
1321                                 break;
1322                         }
1323                 }
1324                 if (dev->proto)
1325                         infolen = inb(REG_FLAGS1(iobase));
1326         }
1327         if (i == 600) {
1328                 DEBUGP(1, dev, "timeout waiting for numRecBytes\n");
1329                 rc = -EIO;
1330                 goto release_io;
1331         } else {
1332                 if (dev->proto == 0) {
1333                         DEBUGP(1, dev, "Wait for T0Done bit to be  set\n");
1334                         for (i = 0; i < 1000; i++) {
1335                                 if (inb(REG_FLAGS0(iobase)) & 0x08)
1336                                         break;
1337                                 msleep_interruptible(10);
1338                         }
1339                         if (i == 1000) {
1340                                 DEBUGP(1, dev, "timeout waiting for T0Done\n");
1341                                 rc = -EIO;
1342                                 goto release_io;
1343                         }
1344
1345                         dev->procbyte = inb(REG_FLAGS1(iobase));
1346                         DEBUGP(4, dev, "Read procedure byte 0x%.2x\n",
1347                               dev->procbyte);
1348
1349                         io_read_num_rec_bytes(iobase, &dev->rlen);
1350                         DEBUGP(4, dev, "Read NumRecBytes = %i\n", dev->rlen);
1351
1352                 }
1353         }
1354         /* T=1: read offset=zero, T=0: read offset=after challenge */
1355         dev->rpos = dev->proto ? 0 : nr == 4 ? 5 : nr > dev->rlen ? 5 : nr;
1356         DEBUGP(4, dev, "dev->rlen = %i,  dev->rpos = %i, nr = %i\n",
1357               dev->rlen, dev->rpos, nr);
1358
1359 release_io:
1360         DEBUGP(4, dev, "Reset SM\n");
1361         xoutb(0x80, REG_FLAGS0(iobase));        /* reset SM */
1362
1363         if (rc < 0) {
1364                 DEBUGP(4, dev, "Write failed but clear T_Active\n");
1365                 dev->flags1 &= 0xdf;
1366                 xoutb(dev->flags1, REG_FLAGS1(iobase));
1367         }
1368
1369         clear_bit(LOCK_IO, &dev->flags);
1370         wake_up_interruptible(&dev->ioq);
1371         wake_up_interruptible(&dev->readq);     /* tell read we have data */
1372
1373         /* ITSEC E2: clear write buffer */
1374         memset((char *)dev->sbuf, 0, 512);
1375
1376         /* return error or actually written bytes */
1377         DEBUGP(2, dev, "<- cmm_write\n");
1378         return rc < 0 ? rc : nr;
1379 }
1380
1381 static void start_monitor(struct cm4000_dev *dev)
1382 {
1383         DEBUGP(3, dev, "-> start_monitor\n");
1384         if (!dev->monitor_running) {
1385                 DEBUGP(5, dev, "create, init and add timer\n");
1386                 setup_timer(&dev->timer, monitor_card, (unsigned long)dev);
1387                 dev->monitor_running = 1;
1388                 mod_timer(&dev->timer, jiffies);
1389         } else
1390                 DEBUGP(5, dev, "monitor already running\n");
1391         DEBUGP(3, dev, "<- start_monitor\n");
1392 }
1393
1394 static void stop_monitor(struct cm4000_dev *dev)
1395 {
1396         DEBUGP(3, dev, "-> stop_monitor\n");
1397         if (dev->monitor_running) {
1398                 DEBUGP(5, dev, "stopping monitor\n");
1399                 terminate_monitor(dev);
1400                 /* reset monitor SM */
1401                 clear_bit(IS_ATR_VALID, &dev->flags);
1402                 clear_bit(IS_ATR_PRESENT, &dev->flags);
1403         } else
1404                 DEBUGP(5, dev, "monitor already stopped\n");
1405         DEBUGP(3, dev, "<- stop_monitor\n");
1406 }
1407
1408 static int cmm_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
1409                      unsigned long arg)
1410 {
1411         struct cm4000_dev *dev = filp->private_data;
1412         unsigned int iobase = dev->p_dev->io.BasePort1;
1413         struct pcmcia_device *link;
1414         int size;
1415         int rc;
1416         void __user *argp = (void __user *)arg;
1417 #ifdef PCMCIA_DEBUG
1418         char *ioctl_names[CM_IOC_MAXNR + 1] = {
1419                 [_IOC_NR(CM_IOCGSTATUS)] "CM_IOCGSTATUS",
1420                 [_IOC_NR(CM_IOCGATR)] "CM_IOCGATR",
1421                 [_IOC_NR(CM_IOCARDOFF)] "CM_IOCARDOFF",
1422                 [_IOC_NR(CM_IOCSPTS)] "CM_IOCSPTS",
1423                 [_IOC_NR(CM_IOSDBGLVL)] "CM4000_DBGLVL",
1424         };
1425 #endif
1426         DEBUGP(3, dev, "cmm_ioctl(device=%d.%d) %s\n", imajor(inode),
1427                iminor(inode), ioctl_names[_IOC_NR(cmd)]);
1428
1429         link = dev_table[iminor(inode)];
1430         if (!pcmcia_dev_present(link)) {
1431                 DEBUGP(4, dev, "DEV_OK false\n");
1432                 return -ENODEV;
1433         }
1434
1435         if (test_bit(IS_CMM_ABSENT, &dev->flags)) {
1436                 DEBUGP(4, dev, "CMM_ABSENT flag set\n");
1437                 return -ENODEV;
1438         }
1439
1440         if (_IOC_TYPE(cmd) != CM_IOC_MAGIC) {
1441                 DEBUGP(4, dev, "ioctype mismatch\n");
1442                 return -EINVAL;
1443         }
1444         if (_IOC_NR(cmd) > CM_IOC_MAXNR) {
1445                 DEBUGP(4, dev, "iocnr mismatch\n");
1446                 return -EINVAL;
1447         }
1448         size = _IOC_SIZE(cmd);
1449         rc = 0;
1450         DEBUGP(4, dev, "iocdir=%.4x iocr=%.4x iocw=%.4x iocsize=%d cmd=%.4x\n",
1451               _IOC_DIR(cmd), _IOC_READ, _IOC_WRITE, size, cmd);
1452
1453         if (_IOC_DIR(cmd) & _IOC_READ) {
1454                 if (!access_ok(VERIFY_WRITE, argp, size))
1455                         return -EFAULT;
1456         }
1457         if (_IOC_DIR(cmd) & _IOC_WRITE) {
1458                 if (!access_ok(VERIFY_READ, argp, size))
1459                         return -EFAULT;
1460         }
1461
1462         switch (cmd) {
1463         case CM_IOCGSTATUS:
1464                 DEBUGP(4, dev, " ... in CM_IOCGSTATUS\n");
1465                 {
1466                         int status;
1467
1468                         /* clear other bits, but leave inserted & powered as
1469                          * they are */
1470                         status = dev->flags0 & 3;
1471                         if (test_bit(IS_ATR_PRESENT, &dev->flags))
1472                                 status |= CM_ATR_PRESENT;
1473                         if (test_bit(IS_ATR_VALID, &dev->flags))
1474                                 status |= CM_ATR_VALID;
1475                         if (test_bit(IS_CMM_ABSENT, &dev->flags))
1476                                 status |= CM_NO_READER;
1477                         if (test_bit(IS_BAD_CARD, &dev->flags))
1478                                 status |= CM_BAD_CARD;
1479                         if (copy_to_user(argp, &status, sizeof(int)))
1480                                 return -EFAULT;
1481                 }
1482                 return 0;
1483         case CM_IOCGATR:
1484                 DEBUGP(4, dev, "... in CM_IOCGATR\n");
1485                 {
1486                         struct atreq __user *atreq = argp;
1487                         int tmp;
1488                         /* allow nonblocking io and being interrupted */
1489                         if (wait_event_interruptible
1490                             (dev->atrq,
1491                              ((filp->f_flags & O_NONBLOCK)
1492                               || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags)
1493                                   != 0)))) {
1494                                 if (filp->f_flags & O_NONBLOCK)
1495                                         return -EAGAIN;
1496                                 return -ERESTARTSYS;
1497                         }
1498
1499                         if (test_bit(IS_ATR_VALID, &dev->flags) == 0) {
1500                                 tmp = -1;
1501                                 if (copy_to_user(&(atreq->atr_len), &tmp,
1502                                                  sizeof(int)))
1503                                         return -EFAULT;
1504                         } else {
1505                                 if (copy_to_user(atreq->atr, dev->atr,
1506                                                  dev->atr_len))
1507                                         return -EFAULT;
1508
1509                                 tmp = dev->atr_len;
1510                                 if (copy_to_user(&(atreq->atr_len), &tmp, sizeof(int)))
1511                                         return -EFAULT;
1512                         }
1513                         return 0;
1514                 }
1515         case CM_IOCARDOFF:
1516
1517 #ifdef PCMCIA_DEBUG
1518                 DEBUGP(4, dev, "... in CM_IOCARDOFF\n");
1519                 if (dev->flags0 & 0x01) {
1520                         DEBUGP(4, dev, "    Card inserted\n");
1521                 } else {
1522                         DEBUGP(2, dev, "    No card inserted\n");
1523                 }
1524                 if (dev->flags0 & 0x02) {
1525                         DEBUGP(4, dev, "    Card powered\n");
1526                 } else {
1527                         DEBUGP(2, dev, "    Card not powered\n");
1528                 }
1529 #endif
1530
1531                 /* is a card inserted and powered? */
1532                 if ((dev->flags0 & 0x01) && (dev->flags0 & 0x02)) {
1533
1534                         /* get IO lock */
1535                         if (wait_event_interruptible
1536                             (dev->ioq,
1537                              ((filp->f_flags & O_NONBLOCK)
1538                               || (test_and_set_bit(LOCK_IO, (void *)&dev->flags)
1539                                   == 0)))) {
1540                                 if (filp->f_flags & O_NONBLOCK)
1541                                         return -EAGAIN;
1542                                 return -ERESTARTSYS;
1543                         }
1544                         /* Set Flags0 = 0x42 */
1545                         DEBUGP(4, dev, "Set Flags0=0x42 \n");
1546                         xoutb(0x42, REG_FLAGS0(iobase));
1547                         clear_bit(IS_ATR_PRESENT, &dev->flags);
1548                         clear_bit(IS_ATR_VALID, &dev->flags);
1549                         dev->mstate = M_CARDOFF;
1550                         clear_bit(LOCK_IO, &dev->flags);
1551                         if (wait_event_interruptible
1552                             (dev->atrq,
1553                              ((filp->f_flags & O_NONBLOCK)
1554                               || (test_bit(IS_ATR_VALID, (void *)&dev->flags) !=
1555                                   0)))) {
1556                                 if (filp->f_flags & O_NONBLOCK)
1557                                         return -EAGAIN;
1558                                 return -ERESTARTSYS;
1559                         }
1560                 }
1561                 /* release lock */
1562                 clear_bit(LOCK_IO, &dev->flags);
1563                 wake_up_interruptible(&dev->ioq);
1564
1565                 return 0;
1566         case CM_IOCSPTS:
1567                 {
1568                         struct ptsreq krnptsreq;
1569
1570                         if (copy_from_user(&krnptsreq, argp,
1571                                            sizeof(struct ptsreq)))
1572                                 return -EFAULT;
1573
1574                         rc = 0;
1575                         DEBUGP(4, dev, "... in CM_IOCSPTS\n");
1576                         /* wait for ATR to get valid */
1577                         if (wait_event_interruptible
1578                             (dev->atrq,
1579                              ((filp->f_flags & O_NONBLOCK)
1580                               || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags)
1581                                   != 0)))) {
1582                                 if (filp->f_flags & O_NONBLOCK)
1583                                         return -EAGAIN;
1584                                 return -ERESTARTSYS;
1585                         }
1586                         /* get IO lock */
1587                         if (wait_event_interruptible
1588                             (dev->ioq,
1589                              ((filp->f_flags & O_NONBLOCK)
1590                               || (test_and_set_bit(LOCK_IO, (void *)&dev->flags)
1591                                   == 0)))) {
1592                                 if (filp->f_flags & O_NONBLOCK)
1593                                         return -EAGAIN;
1594                                 return -ERESTARTSYS;
1595                         }
1596
1597                         if ((rc = set_protocol(dev, &krnptsreq)) != 0) {
1598                                 /* auto power_on again */
1599                                 dev->mstate = M_FETCH_ATR;
1600                                 clear_bit(IS_ATR_VALID, &dev->flags);
1601                         }
1602                         /* release lock */
1603                         clear_bit(LOCK_IO, &dev->flags);
1604                         wake_up_interruptible(&dev->ioq);
1605
1606                 }
1607                 return rc;
1608 #ifdef PCMCIA_DEBUG
1609         case CM_IOSDBGLVL:      /* set debug log level */
1610                 {
1611                         int old_pc_debug = 0;
1612
1613                         old_pc_debug = pc_debug;
1614                         if (copy_from_user(&pc_debug, argp, sizeof(int)))
1615                                 return -EFAULT;
1616
1617                         if (old_pc_debug != pc_debug)
1618                                 DEBUGP(0, dev, "Changed debug log level "
1619                                        "to %i\n", pc_debug);
1620                 }
1621                 return rc;
1622 #endif
1623         default:
1624                 DEBUGP(4, dev, "... in default (unknown IOCTL code)\n");
1625                 return -EINVAL;
1626         }
1627 }
1628
1629 static int cmm_open(struct inode *inode, struct file *filp)
1630 {
1631         struct cm4000_dev *dev;
1632         struct pcmcia_device *link;
1633         int minor = iminor(inode);
1634
1635         if (minor >= CM4000_MAX_DEV)
1636                 return -ENODEV;
1637
1638         link = dev_table[minor];
1639         if (link == NULL || !pcmcia_dev_present(link))
1640                 return -ENODEV;
1641
1642         if (link->open)
1643                 return -EBUSY;
1644
1645         dev = link->priv;
1646         filp->private_data = dev;
1647
1648         DEBUGP(2, dev, "-> cmm_open(device=%d.%d process=%s,%d)\n",
1649               imajor(inode), minor, current->comm, current->pid);
1650
1651         /* init device variables, they may be "polluted" after close
1652          * or, the device may never have been closed (i.e. open failed)
1653          */
1654
1655         ZERO_DEV(dev);
1656
1657         /* opening will always block since the
1658          * monitor will be started by open, which
1659          * means we have to wait for ATR becoming
1660          * vaild = block until valid (or card
1661          * inserted)
1662          */
1663         if (filp->f_flags & O_NONBLOCK)
1664                 return -EAGAIN;
1665
1666         dev->mdelay = T_50MSEC;
1667
1668         /* start monitoring the cardstatus */
1669         start_monitor(dev);
1670
1671         link->open = 1;         /* only one open per device */
1672
1673         DEBUGP(2, dev, "<- cmm_open\n");
1674         return nonseekable_open(inode, filp);
1675 }
1676
1677 static int cmm_close(struct inode *inode, struct file *filp)
1678 {
1679         struct cm4000_dev *dev;
1680         struct pcmcia_device *link;
1681         int minor = iminor(inode);
1682
1683         if (minor >= CM4000_MAX_DEV)
1684                 return -ENODEV;
1685
1686         link = dev_table[minor];
1687         if (link == NULL)
1688                 return -ENODEV;
1689
1690         dev = link->priv;
1691
1692         DEBUGP(2, dev, "-> cmm_close(maj/min=%d.%d)\n",
1693                imajor(inode), minor);
1694
1695         stop_monitor(dev);
1696
1697         ZERO_DEV(dev);
1698
1699         link->open = 0;         /* only one open per device */
1700         wake_up(&dev->devq);    /* socket removed? */
1701
1702         DEBUGP(2, dev, "cmm_close\n");
1703         return 0;
1704 }
1705
1706 static void cmm_cm4000_release(struct pcmcia_device * link)
1707 {
1708         struct cm4000_dev *dev = link->priv;
1709
1710         /* dont terminate the monitor, rather rely on
1711          * close doing that for us.
1712          */
1713         DEBUGP(3, dev, "-> cmm_cm4000_release\n");
1714         while (link->open) {
1715                 printk(KERN_INFO MODULE_NAME ": delaying release until "
1716                        "process has terminated\n");
1717                 /* note: don't interrupt us:
1718                  * close the applications which own
1719                  * the devices _first_ !
1720                  */
1721                 wait_event(dev->devq, (link->open == 0));
1722         }
1723         /* dev->devq=NULL;      this cannot be zeroed earlier */
1724         DEBUGP(3, dev, "<- cmm_cm4000_release\n");
1725         return;
1726 }
1727
1728 /*==== Interface to PCMCIA Layer =======================================*/
1729
1730 static int cm4000_config(struct pcmcia_device * link, int devno)
1731 {
1732         struct cm4000_dev *dev;
1733         tuple_t tuple;
1734         cisparse_t parse;
1735         u_char buf[64];
1736         int fail_fn, fail_rc;
1737         int rc;
1738
1739         /* read the config-tuples */
1740         tuple.Attributes = 0;
1741         tuple.TupleData = buf;
1742         tuple.TupleDataMax = sizeof(buf);
1743         tuple.TupleOffset = 0;
1744
1745         link->io.BasePort2 = 0;
1746         link->io.NumPorts2 = 0;
1747         link->io.Attributes2 = 0;
1748         tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
1749         for (rc = pcmcia_get_first_tuple(link, &tuple);
1750              rc == CS_SUCCESS; rc = pcmcia_get_next_tuple(link, &tuple)) {
1751
1752                 rc = pcmcia_get_tuple_data(link, &tuple);
1753                 if (rc != CS_SUCCESS)
1754                         continue;
1755                 rc = pcmcia_parse_tuple(link, &tuple, &parse);
1756                 if (rc != CS_SUCCESS)
1757                         continue;
1758
1759                 link->conf.ConfigIndex = parse.cftable_entry.index;
1760
1761                 if (!parse.cftable_entry.io.nwin)
1762                         continue;
1763
1764                 /* Get the IOaddr */
1765                 link->io.BasePort1 = parse.cftable_entry.io.win[0].base;
1766                 link->io.NumPorts1 = parse.cftable_entry.io.win[0].len;
1767                 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
1768                 if (!(parse.cftable_entry.io.flags & CISTPL_IO_8BIT))
1769                         link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
1770                 if (!(parse.cftable_entry.io.flags & CISTPL_IO_16BIT))
1771                         link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
1772                 link->io.IOAddrLines = parse.cftable_entry.io.flags
1773                     & CISTPL_IO_LINES_MASK;
1774
1775                 rc = pcmcia_request_io(link, &link->io);
1776                 if (rc == CS_SUCCESS)
1777                         break;  /* we are done */
1778         }
1779         if (rc != CS_SUCCESS)
1780                 goto cs_release;
1781
1782         link->conf.IntType = 00000002;
1783
1784         if ((fail_rc =
1785              pcmcia_request_configuration(link, &link->conf)) != CS_SUCCESS) {
1786                 fail_fn = RequestConfiguration;
1787                 goto cs_release;
1788         }
1789
1790         dev = link->priv;
1791         sprintf(dev->node.dev_name, DEVICE_NAME "%d", devno);
1792         dev->node.major = major;
1793         dev->node.minor = devno;
1794         dev->node.next = NULL;
1795         link->dev_node = &dev->node;
1796
1797         return 0;
1798
1799 cs_release:
1800         cm4000_release(link);
1801         return -ENODEV;
1802 }
1803
1804 static int cm4000_suspend(struct pcmcia_device *link)
1805 {
1806         struct cm4000_dev *dev;
1807
1808         dev = link->priv;
1809         stop_monitor(dev);
1810
1811         return 0;
1812 }
1813
1814 static int cm4000_resume(struct pcmcia_device *link)
1815 {
1816         struct cm4000_dev *dev;
1817
1818         dev = link->priv;
1819         if (link->open)
1820                 start_monitor(dev);
1821
1822         return 0;
1823 }
1824
1825 static void cm4000_release(struct pcmcia_device *link)
1826 {
1827         cmm_cm4000_release(link);       /* delay release until device closed */
1828         pcmcia_disable_device(link);
1829 }
1830
1831 static int cm4000_probe(struct pcmcia_device *link)
1832 {
1833         struct cm4000_dev *dev;
1834         int i, ret;
1835
1836         for (i = 0; i < CM4000_MAX_DEV; i++)
1837                 if (dev_table[i] == NULL)
1838                         break;
1839
1840         if (i == CM4000_MAX_DEV) {
1841                 printk(KERN_NOTICE MODULE_NAME ": all devices in use\n");
1842                 return -ENODEV;
1843         }
1844
1845         /* create a new cm4000_cs device */
1846         dev = kzalloc(sizeof(struct cm4000_dev), GFP_KERNEL);
1847         if (dev == NULL)
1848                 return -ENOMEM;
1849
1850         dev->p_dev = link;
1851         link->priv = dev;
1852         link->conf.IntType = INT_MEMORY_AND_IO;
1853         dev_table[i] = link;
1854
1855         init_waitqueue_head(&dev->devq);
1856         init_waitqueue_head(&dev->ioq);
1857         init_waitqueue_head(&dev->atrq);
1858         init_waitqueue_head(&dev->readq);
1859
1860         ret = cm4000_config(link, i);
1861         if (ret) {
1862                 dev_table[i] = NULL;
1863                 kfree(dev);
1864                 return ret;
1865         }
1866
1867         device_create(cmm_class, NULL, MKDEV(major, i), "cmm%d", i);
1868
1869         return 0;
1870 }
1871
1872 static void cm4000_detach(struct pcmcia_device *link)
1873 {
1874         struct cm4000_dev *dev = link->priv;
1875         int devno;
1876
1877         /* find device */
1878         for (devno = 0; devno < CM4000_MAX_DEV; devno++)
1879                 if (dev_table[devno] == link)
1880                         break;
1881         if (devno == CM4000_MAX_DEV)
1882                 return;
1883
1884         stop_monitor(dev);
1885
1886         cm4000_release(link);
1887
1888         dev_table[devno] = NULL;
1889         kfree(dev);
1890
1891         device_destroy(cmm_class, MKDEV(major, devno));
1892
1893         return;
1894 }
1895
1896 static const struct file_operations cm4000_fops = {
1897         .owner  = THIS_MODULE,
1898         .read   = cmm_read,
1899         .write  = cmm_write,
1900         .ioctl  = cmm_ioctl,
1901         .open   = cmm_open,
1902         .release= cmm_close,
1903 };
1904
1905 static struct pcmcia_device_id cm4000_ids[] = {
1906         PCMCIA_DEVICE_MANF_CARD(0x0223, 0x0002),
1907         PCMCIA_DEVICE_PROD_ID12("CardMan", "4000", 0x2FB368CA, 0xA2BD8C39),
1908         PCMCIA_DEVICE_NULL,
1909 };
1910 MODULE_DEVICE_TABLE(pcmcia, cm4000_ids);
1911
1912 static struct pcmcia_driver cm4000_driver = {
1913         .owner    = THIS_MODULE,
1914         .drv      = {
1915                 .name = "cm4000_cs",
1916                 },
1917         .probe    = cm4000_probe,
1918         .remove   = cm4000_detach,
1919         .suspend  = cm4000_suspend,
1920         .resume   = cm4000_resume,
1921         .id_table = cm4000_ids,
1922 };
1923
1924 static int __init cmm_init(void)
1925 {
1926         int rc;
1927
1928         printk(KERN_INFO "%s\n", version);
1929
1930         cmm_class = class_create(THIS_MODULE, "cardman_4000");
1931         if (IS_ERR(cmm_class))
1932                 return PTR_ERR(cmm_class);
1933
1934         major = register_chrdev(0, DEVICE_NAME, &cm4000_fops);
1935         if (major < 0) {
1936                 printk(KERN_WARNING MODULE_NAME
1937                         ": could not get major number\n");
1938                 class_destroy(cmm_class);
1939                 return major;
1940         }
1941
1942         rc = pcmcia_register_driver(&cm4000_driver);
1943         if (rc < 0) {
1944                 unregister_chrdev(major, DEVICE_NAME);
1945                 class_destroy(cmm_class);
1946                 return rc;
1947         }
1948
1949         return 0;
1950 }
1951
1952 static void __exit cmm_exit(void)
1953 {
1954         printk(KERN_INFO MODULE_NAME ": unloading\n");
1955         pcmcia_unregister_driver(&cm4000_driver);
1956         unregister_chrdev(major, DEVICE_NAME);
1957         class_destroy(cmm_class);
1958 };
1959
1960 module_init(cmm_init);
1961 module_exit(cmm_exit);
1962 MODULE_LICENSE("Dual BSD/GPL");