cm4000_cs: use bitrev
[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->handle))
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                            __FUNCTION__ , ## 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(ioaddr_t iobase, unsigned short *s)
312 {
313         unsigned short tmp;
314
315         tmp = *s = 0;
316         do {
317                 *s = tmp;
318                 tmp = inb(REG_NUM_BYTES(iobase)) |
319                                 (inb(REG_FLAGS0(iobase)) & 4 ? 0x100 : 0);
320         } while (tmp != *s);
321
322         return *s;
323 }
324
325 static int parse_atr(struct cm4000_dev *dev)
326 {
327         unsigned char any_t1, any_t0;
328         unsigned char ch, ifno;
329         int ix, done;
330
331         DEBUGP(3, dev, "-> parse_atr: dev->atr_len = %i\n", dev->atr_len);
332
333         if (dev->atr_len < 3) {
334                 DEBUGP(5, dev, "parse_atr: atr_len < 3\n");
335                 return 0;
336         }
337
338         if (dev->atr[0] == 0x3f)
339                 set_bit(IS_INVREV, &dev->flags);
340         else
341                 clear_bit(IS_INVREV, &dev->flags);
342         ix = 1;
343         ifno = 1;
344         ch = dev->atr[1];
345         dev->proto = 0;         /* XXX PROTO */
346         any_t1 = any_t0 = done = 0;
347         dev->ta1 = 0x11;        /* defaults to 9600 baud */
348         do {
349                 if (ifno == 1 && (ch & 0x10)) {
350                         /* read first interface byte and TA1 is present */
351                         dev->ta1 = dev->atr[2];
352                         DEBUGP(5, dev, "Card says FiDi is 0x%.2x\n", dev->ta1);
353                         ifno++;
354                 } else if ((ifno == 2) && (ch & 0x10)) { /* TA(2) */
355                         dev->ta1 = 0x11;
356                         ifno++;
357                 }
358
359                 DEBUGP(5, dev, "Yi=%.2x\n", ch & 0xf0);
360                 ix += ((ch & 0x10) >> 4)        /* no of int.face chars */
361                     +((ch & 0x20) >> 5)
362                     + ((ch & 0x40) >> 6)
363                     + ((ch & 0x80) >> 7);
364                 /* ATRLENCK(dev,ix); */
365                 if (ch & 0x80) {        /* TDi */
366                         ch = dev->atr[ix];
367                         if ((ch & 0x0f)) {
368                                 any_t1 = 1;
369                                 DEBUGP(5, dev, "card is capable of T=1\n");
370                         } else {
371                                 any_t0 = 1;
372                                 DEBUGP(5, dev, "card is capable of T=0\n");
373                         }
374                 } else
375                         done = 1;
376         } while (!done);
377
378         DEBUGP(5, dev, "ix=%d noHist=%d any_t1=%d\n",
379               ix, dev->atr[1] & 15, any_t1);
380         if (ix + 1 + (dev->atr[1] & 0x0f) + any_t1 != dev->atr_len) {
381                 DEBUGP(5, dev, "length error\n");
382                 return 0;
383         }
384         if (any_t0)
385                 set_bit(IS_ANY_T0, &dev->flags);
386
387         if (any_t1) {           /* compute csum */
388                 dev->atr_csum = 0;
389 #ifdef ATR_CSUM
390                 for (i = 1; i < dev->atr_len; i++)
391                         dev->atr_csum ^= dev->atr[i];
392                 if (dev->atr_csum) {
393                         set_bit(IS_BAD_CSUM, &dev->flags);
394                         DEBUGP(5, dev, "bad checksum\n");
395                         goto return_0;
396                 }
397 #endif
398                 if (any_t0 == 0)
399                         dev->proto = 1; /* XXX PROTO */
400                 set_bit(IS_ANY_T1, &dev->flags);
401         }
402
403         return 1;
404 }
405
406 struct card_fixup {
407         char atr[12];
408         u_int8_t atr_len;
409         u_int8_t stopbits;
410 };
411
412 static struct card_fixup card_fixups[] = {
413         {       /* ACOS */
414                 .atr = { 0x3b, 0xb3, 0x11, 0x00, 0x00, 0x41, 0x01 },
415                 .atr_len = 7,
416                 .stopbits = 0x03,
417         },
418         {       /* Motorola */
419                 .atr = {0x3b, 0x76, 0x13, 0x00, 0x00, 0x80, 0x62, 0x07,
420                         0x41, 0x81, 0x81 },
421                 .atr_len = 11,
422                 .stopbits = 0x04,
423         },
424 };
425
426 static void set_cardparameter(struct cm4000_dev *dev)
427 {
428         int i;
429         ioaddr_t iobase = dev->p_dev->io.BasePort1;
430         u_int8_t stopbits = 0x02; /* ISO default */
431
432         DEBUGP(3, dev, "-> set_cardparameter\n");
433
434         dev->flags1 = dev->flags1 | (((dev->baudv - 1) & 0x0100) >> 8);
435         xoutb(dev->flags1, REG_FLAGS1(iobase));
436         DEBUGP(5, dev, "flags1 = 0x%02x\n", dev->flags1);
437
438         /* set baudrate */
439         xoutb((unsigned char)((dev->baudv - 1) & 0xFF), REG_BAUDRATE(iobase));
440
441         DEBUGP(5, dev, "baudv = %i -> write 0x%02x\n", dev->baudv,
442               ((dev->baudv - 1) & 0xFF));
443
444         /* set stopbits */
445         for (i = 0; i < ARRAY_SIZE(card_fixups); i++) {
446                 if (!memcmp(dev->atr, card_fixups[i].atr,
447                             card_fixups[i].atr_len))
448                         stopbits = card_fixups[i].stopbits;
449         }
450         xoutb(stopbits, REG_STOPBITS(iobase));
451
452         DEBUGP(3, dev, "<- set_cardparameter\n");
453 }
454
455 static int set_protocol(struct cm4000_dev *dev, struct ptsreq *ptsreq)
456 {
457
458         unsigned long tmp, i;
459         unsigned short num_bytes_read;
460         unsigned char pts_reply[4];
461         ssize_t rc;
462         ioaddr_t iobase = dev->p_dev->io.BasePort1;
463
464         rc = 0;
465
466         DEBUGP(3, dev, "-> set_protocol\n");
467         DEBUGP(5, dev, "ptsreq->Protocol = 0x%.8x, ptsreq->Flags=0x%.8x, "
468                  "ptsreq->pts1=0x%.2x, ptsreq->pts2=0x%.2x, "
469                  "ptsreq->pts3=0x%.2x\n", (unsigned int)ptsreq->protocol,
470                  (unsigned int)ptsreq->flags, ptsreq->pts1, ptsreq->pts2,
471                  ptsreq->pts3);
472
473         /* Fill PTS structure */
474         dev->pts[0] = 0xff;
475         dev->pts[1] = 0x00;
476         tmp = ptsreq->protocol;
477         while ((tmp = (tmp >> 1)) > 0)
478                 dev->pts[1]++;
479         dev->proto = dev->pts[1];       /* Set new protocol */
480         dev->pts[1] = (0x01 << 4) | (dev->pts[1]);
481
482         /* Correct Fi/Di according to CM4000 Fi/Di table */
483         DEBUGP(5, dev, "Ta(1) from ATR is 0x%.2x\n", dev->ta1);
484         /* set Fi/Di according to ATR TA(1) */
485         dev->pts[2] = fi_di_table[dev->ta1 & 0x0F][(dev->ta1 >> 4) & 0x0F];
486
487         /* Calculate PCK character */
488         dev->pts[3] = dev->pts[0] ^ dev->pts[1] ^ dev->pts[2];
489
490         DEBUGP(5, dev, "pts0=%.2x, pts1=%.2x, pts2=%.2x, pts3=%.2x\n",
491                dev->pts[0], dev->pts[1], dev->pts[2], dev->pts[3]);
492
493         /* check card convention */
494         if (test_bit(IS_INVREV, &dev->flags))
495                 str_invert_revert(dev->pts, 4);
496
497         /* reset SM */
498         xoutb(0x80, REG_FLAGS0(iobase));
499
500         /* Enable access to the message buffer */
501         DEBUGP(5, dev, "Enable access to the messages buffer\n");
502         dev->flags1 = 0x20      /* T_Active */
503             | (test_bit(IS_INVREV, &dev->flags) ? 0x02 : 0x00) /* inv parity */
504             | ((dev->baudv >> 8) & 0x01);       /* MSB-baud */
505         xoutb(dev->flags1, REG_FLAGS1(iobase));
506
507         DEBUGP(5, dev, "Enable message buffer -> flags1 = 0x%.2x\n",
508                dev->flags1);
509
510         /* write challenge to the buffer */
511         DEBUGP(5, dev, "Write challenge to buffer: ");
512         for (i = 0; i < 4; i++) {
513                 xoutb(i, REG_BUF_ADDR(iobase));
514                 xoutb(dev->pts[i], REG_BUF_DATA(iobase));       /* buf data */
515 #ifdef PCMCIA_DEBUG
516                 if (pc_debug >= 5)
517                         printk("0x%.2x ", dev->pts[i]);
518         }
519         if (pc_debug >= 5)
520                 printk("\n");
521 #else
522         }
523 #endif
524
525         /* set number of bytes to write */
526         DEBUGP(5, dev, "Set number of bytes to write\n");
527         xoutb(0x04, REG_NUM_SEND(iobase));
528
529         /* Trigger CARDMAN CONTROLLER */
530         xoutb(0x50, REG_FLAGS0(iobase));
531
532         /* Monitor progress */
533         /* wait for xmit done */
534         DEBUGP(5, dev, "Waiting for NumRecBytes getting valid\n");
535
536         for (i = 0; i < 100; i++) {
537                 if (inb(REG_FLAGS0(iobase)) & 0x08) {
538                         DEBUGP(5, dev, "NumRecBytes is valid\n");
539                         break;
540                 }
541                 mdelay(10);
542         }
543         if (i == 100) {
544                 DEBUGP(5, dev, "Timeout waiting for NumRecBytes getting "
545                        "valid\n");
546                 rc = -EIO;
547                 goto exit_setprotocol;
548         }
549
550         DEBUGP(5, dev, "Reading NumRecBytes\n");
551         for (i = 0; i < 100; i++) {
552                 io_read_num_rec_bytes(iobase, &num_bytes_read);
553                 if (num_bytes_read >= 4) {
554                         DEBUGP(2, dev, "NumRecBytes = %i\n", num_bytes_read);
555                         break;
556                 }
557                 mdelay(10);
558         }
559
560         /* check whether it is a short PTS reply? */
561         if (num_bytes_read == 3)
562                 i = 0;
563
564         if (i == 100) {
565                 DEBUGP(5, dev, "Timeout reading num_bytes_read\n");
566                 rc = -EIO;
567                 goto exit_setprotocol;
568         }
569
570         DEBUGP(5, dev, "Reset the CARDMAN CONTROLLER\n");
571         xoutb(0x80, REG_FLAGS0(iobase));
572
573         /* Read PPS reply */
574         DEBUGP(5, dev, "Read PPS reply\n");
575         for (i = 0; i < num_bytes_read; i++) {
576                 xoutb(i, REG_BUF_ADDR(iobase));
577                 pts_reply[i] = inb(REG_BUF_DATA(iobase));
578         }
579
580 #ifdef PCMCIA_DEBUG
581         DEBUGP(2, dev, "PTSreply: ");
582         for (i = 0; i < num_bytes_read; i++) {
583                 if (pc_debug >= 5)
584                         printk("0x%.2x ", pts_reply[i]);
585         }
586         printk("\n");
587 #endif  /* PCMCIA_DEBUG */
588
589         DEBUGP(5, dev, "Clear Tactive in Flags1\n");
590         xoutb(0x20, REG_FLAGS1(iobase));
591
592         /* Compare ptsreq and ptsreply */
593         if ((dev->pts[0] == pts_reply[0]) &&
594             (dev->pts[1] == pts_reply[1]) &&
595             (dev->pts[2] == pts_reply[2]) && (dev->pts[3] == pts_reply[3])) {
596                 /* setcardparameter according to PPS */
597                 dev->baudv = calc_baudv(dev->pts[2]);
598                 set_cardparameter(dev);
599         } else if ((dev->pts[0] == pts_reply[0]) &&
600                    ((dev->pts[1] & 0xef) == pts_reply[1]) &&
601                    ((pts_reply[0] ^ pts_reply[1]) == pts_reply[2])) {
602                 /* short PTS reply, set card parameter to default values */
603                 dev->baudv = calc_baudv(0x11);
604                 set_cardparameter(dev);
605         } else
606                 rc = -EIO;
607
608 exit_setprotocol:
609         DEBUGP(3, dev, "<- set_protocol\n");
610         return rc;
611 }
612
613 static int io_detect_cm4000(ioaddr_t iobase, struct cm4000_dev *dev)
614 {
615
616         /* note: statemachine is assumed to be reset */
617         if (inb(REG_FLAGS0(iobase)) & 8) {
618                 clear_bit(IS_ATR_VALID, &dev->flags);
619                 set_bit(IS_CMM_ABSENT, &dev->flags);
620                 return 0;       /* detect CMM = 1 -> failure */
621         }
622         /* xoutb(0x40, REG_FLAGS1(iobase)); detectCMM */
623         xoutb(dev->flags1 | 0x40, REG_FLAGS1(iobase));
624         if ((inb(REG_FLAGS0(iobase)) & 8) == 0) {
625                 clear_bit(IS_ATR_VALID, &dev->flags);
626                 set_bit(IS_CMM_ABSENT, &dev->flags);
627                 return 0;       /* detect CMM=0 -> failure */
628         }
629         /* clear detectCMM again by restoring original flags1 */
630         xoutb(dev->flags1, REG_FLAGS1(iobase));
631         return 1;
632 }
633
634 static void terminate_monitor(struct cm4000_dev *dev)
635 {
636
637         /* tell the monitor to stop and wait until
638          * it terminates.
639          */
640         DEBUGP(3, dev, "-> terminate_monitor\n");
641         wait_event_interruptible(dev->devq,
642                                  test_and_set_bit(LOCK_MONITOR,
643                                                   (void *)&dev->flags));
644
645         /* now, LOCK_MONITOR has been set.
646          * allow a last cycle in the monitor.
647          * the monitor will indicate that it has
648          * finished by clearing this bit.
649          */
650         DEBUGP(5, dev, "Now allow last cycle of monitor!\n");
651         while (test_bit(LOCK_MONITOR, (void *)&dev->flags))
652                 msleep(25);
653
654         DEBUGP(5, dev, "Delete timer\n");
655         del_timer_sync(&dev->timer);
656 #ifdef PCMCIA_DEBUG
657         dev->monitor_running = 0;
658 #endif
659
660         DEBUGP(3, dev, "<- terminate_monitor\n");
661 }
662
663 /*
664  * monitor the card every 50msec. as a side-effect, retrieve the
665  * atr once a card is inserted. another side-effect of retrieving the
666  * atr is that the card will be powered on, so there is no need to
667  * power on the card explictely from the application: the driver
668  * is already doing that for you.
669  */
670
671 static void monitor_card(unsigned long p)
672 {
673         struct cm4000_dev *dev = (struct cm4000_dev *) p;
674         ioaddr_t iobase = dev->p_dev->io.BasePort1;
675         unsigned short s;
676         struct ptsreq ptsreq;
677         int i, atrc;
678
679         DEBUGP(7, dev, "->  monitor_card\n");
680
681         /* if someone has set the lock for us: we're done! */
682         if (test_and_set_bit(LOCK_MONITOR, &dev->flags)) {
683                 DEBUGP(4, dev, "About to stop monitor\n");
684                 /* no */
685                 dev->rlen =
686                     dev->rpos =
687                     dev->atr_csum = dev->atr_len_retry = dev->cwarn = 0;
688                 dev->mstate = M_FETCH_ATR;
689                 clear_bit(LOCK_MONITOR, &dev->flags);
690                 /* close et al. are sleeping on devq, so wake it */
691                 wake_up_interruptible(&dev->devq);
692                 DEBUGP(2, dev, "<- monitor_card (we are done now)\n");
693                 return;
694         }
695
696         /* try to lock io: if it is already locked, just add another timer */
697         if (test_and_set_bit(LOCK_IO, (void *)&dev->flags)) {
698                 DEBUGP(4, dev, "Couldn't get IO lock\n");
699                 goto return_with_timer;
700         }
701
702         /* is a card/a reader inserted at all ? */
703         dev->flags0 = xinb(REG_FLAGS0(iobase));
704         DEBUGP(7, dev, "dev->flags0 = 0x%2x\n", dev->flags0);
705         DEBUGP(7, dev, "smartcard present: %s\n",
706                dev->flags0 & 1 ? "yes" : "no");
707         DEBUGP(7, dev, "cardman present: %s\n",
708                dev->flags0 == 0xff ? "no" : "yes");
709
710         if ((dev->flags0 & 1) == 0      /* no smartcard inserted */
711             || dev->flags0 == 0xff) {   /* no cardman inserted */
712                 /* no */
713                 dev->rlen =
714                     dev->rpos =
715                     dev->atr_csum = dev->atr_len_retry = dev->cwarn = 0;
716                 dev->mstate = M_FETCH_ATR;
717
718                 dev->flags &= 0x000000ff; /* only keep IO and MONITOR locks */
719
720                 if (dev->flags0 == 0xff) {
721                         DEBUGP(4, dev, "set IS_CMM_ABSENT bit\n");
722                         set_bit(IS_CMM_ABSENT, &dev->flags);
723                 } else if (test_bit(IS_CMM_ABSENT, &dev->flags)) {
724                         DEBUGP(4, dev, "clear IS_CMM_ABSENT bit "
725                                "(card is removed)\n");
726                         clear_bit(IS_CMM_ABSENT, &dev->flags);
727                 }
728
729                 goto release_io;
730         } else if ((dev->flags0 & 1) && test_bit(IS_CMM_ABSENT, &dev->flags)) {
731                 /* cardman and card present but cardman was absent before
732                  * (after suspend with inserted card) */
733                 DEBUGP(4, dev, "clear IS_CMM_ABSENT bit (card is inserted)\n");
734                 clear_bit(IS_CMM_ABSENT, &dev->flags);
735         }
736
737         if (test_bit(IS_ATR_VALID, &dev->flags) == 1) {
738                 DEBUGP(7, dev, "believe ATR is already valid (do nothing)\n");
739                 goto release_io;
740         }
741
742         switch (dev->mstate) {
743                 unsigned char flags0;
744         case M_CARDOFF:
745                 DEBUGP(4, dev, "M_CARDOFF\n");
746                 flags0 = inb(REG_FLAGS0(iobase));
747                 if (flags0 & 0x02) {
748                         /* wait until Flags0 indicate power is off */
749                         dev->mdelay = T_10MSEC;
750                 } else {
751                         /* Flags0 indicate power off and no card inserted now;
752                          * Reset CARDMAN CONTROLLER */
753                         xoutb(0x80, REG_FLAGS0(iobase));
754
755                         /* prepare for fetching ATR again: after card off ATR
756                          * is read again automatically */
757                         dev->rlen =
758                             dev->rpos =
759                             dev->atr_csum =
760                             dev->atr_len_retry = dev->cwarn = 0;
761                         dev->mstate = M_FETCH_ATR;
762
763                         /* minimal gap between CARDOFF and read ATR is 50msec */
764                         dev->mdelay = T_50MSEC;
765                 }
766                 break;
767         case M_FETCH_ATR:
768                 DEBUGP(4, dev, "M_FETCH_ATR\n");
769                 xoutb(0x80, REG_FLAGS0(iobase));
770                 DEBUGP(4, dev, "Reset BAUDV to 9600\n");
771                 dev->baudv = 0x173;     /* 9600 */
772                 xoutb(0x02, REG_STOPBITS(iobase));      /* stopbits=2 */
773                 xoutb(0x73, REG_BAUDRATE(iobase));      /* baud value */
774                 xoutb(0x21, REG_FLAGS1(iobase));        /* T_Active=1, baud
775                                                            value */
776                 /* warm start vs. power on: */
777                 xoutb(dev->flags0 & 2 ? 0x46 : 0x44, REG_FLAGS0(iobase));
778                 dev->mdelay = T_40MSEC;
779                 dev->mstate = M_TIMEOUT_WAIT;
780                 break;
781         case M_TIMEOUT_WAIT:
782                 DEBUGP(4, dev, "M_TIMEOUT_WAIT\n");
783                 /* numRecBytes */
784                 io_read_num_rec_bytes(iobase, &dev->atr_len);
785                 dev->mdelay = T_10MSEC;
786                 dev->mstate = M_READ_ATR_LEN;
787                 break;
788         case M_READ_ATR_LEN:
789                 DEBUGP(4, dev, "M_READ_ATR_LEN\n");
790                 /* infinite loop possible, since there is no timeout */
791
792 #define MAX_ATR_LEN_RETRY       100
793
794                 if (dev->atr_len == io_read_num_rec_bytes(iobase, &s)) {
795                         if (dev->atr_len_retry++ >= MAX_ATR_LEN_RETRY) {                                        /* + XX msec */
796                                 dev->mdelay = T_10MSEC;
797                                 dev->mstate = M_READ_ATR;
798                         }
799                 } else {
800                         dev->atr_len = s;
801                         dev->atr_len_retry = 0; /* set new timeout */
802                 }
803
804                 DEBUGP(4, dev, "Current ATR_LEN = %i\n", dev->atr_len);
805                 break;
806         case M_READ_ATR:
807                 DEBUGP(4, dev, "M_READ_ATR\n");
808                 xoutb(0x80, REG_FLAGS0(iobase));        /* reset SM */
809                 for (i = 0; i < dev->atr_len; i++) {
810                         xoutb(i, REG_BUF_ADDR(iobase));
811                         dev->atr[i] = inb(REG_BUF_DATA(iobase));
812                 }
813                 /* Deactivate T_Active flags */
814                 DEBUGP(4, dev, "Deactivate T_Active flags\n");
815                 dev->flags1 = 0x01;
816                 xoutb(dev->flags1, REG_FLAGS1(iobase));
817
818                 /* atr is present (which doesnt mean it's valid) */
819                 set_bit(IS_ATR_PRESENT, &dev->flags);
820                 if (dev->atr[0] == 0x03)
821                         str_invert_revert(dev->atr, dev->atr_len);
822                 atrc = parse_atr(dev);
823                 if (atrc == 0) {        /* atr invalid */
824                         dev->mdelay = 0;
825                         dev->mstate = M_BAD_CARD;
826                 } else {
827                         dev->mdelay = T_50MSEC;
828                         dev->mstate = M_ATR_PRESENT;
829                         set_bit(IS_ATR_VALID, &dev->flags);
830                 }
831
832                 if (test_bit(IS_ATR_VALID, &dev->flags) == 1) {
833                         DEBUGP(4, dev, "monitor_card: ATR valid\n");
834                         /* if ta1 == 0x11, no PPS necessary (default values) */
835                         /* do not do PPS with multi protocol cards */
836                         if ((test_bit(IS_AUTOPPS_ACT, &dev->flags) == 0) &&
837                             (dev->ta1 != 0x11) &&
838                             !(test_bit(IS_ANY_T0, &dev->flags) &&
839                             test_bit(IS_ANY_T1, &dev->flags))) {
840                                 DEBUGP(4, dev, "Perform AUTOPPS\n");
841                                 set_bit(IS_AUTOPPS_ACT, &dev->flags);
842                                 ptsreq.protocol = ptsreq.protocol =
843                                     (0x01 << dev->proto);
844                                 ptsreq.flags = 0x01;
845                                 ptsreq.pts1 = 0x00;
846                                 ptsreq.pts2 = 0x00;
847                                 ptsreq.pts3 = 0x00;
848                                 if (set_protocol(dev, &ptsreq) == 0) {
849                                         DEBUGP(4, dev, "AUTOPPS ret SUCC\n");
850                                         clear_bit(IS_AUTOPPS_ACT, &dev->flags);
851                                         wake_up_interruptible(&dev->atrq);
852                                 } else {
853                                         DEBUGP(4, dev, "AUTOPPS failed: "
854                                                "repower using defaults\n");
855                                         /* prepare for repowering  */
856                                         clear_bit(IS_ATR_PRESENT, &dev->flags);
857                                         clear_bit(IS_ATR_VALID, &dev->flags);
858                                         dev->rlen =
859                                             dev->rpos =
860                                             dev->atr_csum =
861                                             dev->atr_len_retry = dev->cwarn = 0;
862                                         dev->mstate = M_FETCH_ATR;
863
864                                         dev->mdelay = T_50MSEC;
865                                 }
866                         } else {
867                                 /* for cards which use slightly different
868                                  * params (extra guard time) */
869                                 set_cardparameter(dev);
870                                 if (test_bit(IS_AUTOPPS_ACT, &dev->flags) == 1)
871                                         DEBUGP(4, dev, "AUTOPPS already active "
872                                                "2nd try:use default values\n");
873                                 if (dev->ta1 == 0x11)
874                                         DEBUGP(4, dev, "No AUTOPPS necessary "
875                                                "TA(1)==0x11\n");
876                                 if (test_bit(IS_ANY_T0, &dev->flags)
877                                     && test_bit(IS_ANY_T1, &dev->flags))
878                                         DEBUGP(4, dev, "Do NOT perform AUTOPPS "
879                                                "with multiprotocol cards\n");
880                                 clear_bit(IS_AUTOPPS_ACT, &dev->flags);
881                                 wake_up_interruptible(&dev->atrq);
882                         }
883                 } else {
884                         DEBUGP(4, dev, "ATR invalid\n");
885                         wake_up_interruptible(&dev->atrq);
886                 }
887                 break;
888         case M_BAD_CARD:
889                 DEBUGP(4, dev, "M_BAD_CARD\n");
890                 /* slow down warning, but prompt immediately after insertion */
891                 if (dev->cwarn == 0 || dev->cwarn == 10) {
892                         set_bit(IS_BAD_CARD, &dev->flags);
893                         printk(KERN_WARNING MODULE_NAME ": device %s: ",
894                                dev->node.dev_name);
895                         if (test_bit(IS_BAD_CSUM, &dev->flags)) {
896                                 DEBUGP(4, dev, "ATR checksum (0x%.2x, should "
897                                        "be zero) failed\n", dev->atr_csum);
898                         }
899 #ifdef PCMCIA_DEBUG
900                         else if (test_bit(IS_BAD_LENGTH, &dev->flags)) {
901                                 DEBUGP(4, dev, "ATR length error\n");
902                         } else {
903                                 DEBUGP(4, dev, "card damaged or wrong way "
904                                         "inserted\n");
905                         }
906 #endif
907                         dev->cwarn = 0;
908                         wake_up_interruptible(&dev->atrq);      /* wake open */
909                 }
910                 dev->cwarn++;
911                 dev->mdelay = T_100MSEC;
912                 dev->mstate = M_FETCH_ATR;
913                 break;
914         default:
915                 DEBUGP(7, dev, "Unknown action\n");
916                 break;          /* nothing */
917         }
918
919 release_io:
920         DEBUGP(7, dev, "release_io\n");
921         clear_bit(LOCK_IO, &dev->flags);
922         wake_up_interruptible(&dev->ioq);       /* whoever needs IO */
923
924 return_with_timer:
925         DEBUGP(7, dev, "<- monitor_card (returns with timer)\n");
926         mod_timer(&dev->timer, jiffies + dev->mdelay);
927         clear_bit(LOCK_MONITOR, &dev->flags);
928 }
929
930 /* Interface to userland (file_operations) */
931
932 static ssize_t cmm_read(struct file *filp, __user char *buf, size_t count,
933                         loff_t *ppos)
934 {
935         struct cm4000_dev *dev = filp->private_data;
936         ioaddr_t iobase = dev->p_dev->io.BasePort1;
937         ssize_t rc;
938         int i, j, k;
939
940         DEBUGP(2, dev, "-> cmm_read(%s,%d)\n", current->comm, current->pid);
941
942         if (count == 0)         /* according to manpage */
943                 return 0;
944
945         if (!pcmcia_dev_present(dev->p_dev) || /* device removed */
946             test_bit(IS_CMM_ABSENT, &dev->flags))
947                 return -ENODEV;
948
949         if (test_bit(IS_BAD_CSUM, &dev->flags))
950                 return -EIO;
951
952         /* also see the note about this in cmm_write */
953         if (wait_event_interruptible
954             (dev->atrq,
955              ((filp->f_flags & O_NONBLOCK)
956               || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags) != 0)))) {
957                 if (filp->f_flags & O_NONBLOCK)
958                         return -EAGAIN;
959                 return -ERESTARTSYS;
960         }
961
962         if (test_bit(IS_ATR_VALID, &dev->flags) == 0)
963                 return -EIO;
964
965         /* this one implements blocking IO */
966         if (wait_event_interruptible
967             (dev->readq,
968              ((filp->f_flags & O_NONBLOCK) || (dev->rpos < dev->rlen)))) {
969                 if (filp->f_flags & O_NONBLOCK)
970                         return -EAGAIN;
971                 return -ERESTARTSYS;
972         }
973
974         /* lock io */
975         if (wait_event_interruptible
976             (dev->ioq,
977              ((filp->f_flags & O_NONBLOCK)
978               || (test_and_set_bit(LOCK_IO, (void *)&dev->flags) == 0)))) {
979                 if (filp->f_flags & O_NONBLOCK)
980                         return -EAGAIN;
981                 return -ERESTARTSYS;
982         }
983
984         rc = 0;
985         dev->flags0 = inb(REG_FLAGS0(iobase));
986         if ((dev->flags0 & 1) == 0      /* no smartcard inserted */
987             || dev->flags0 == 0xff) {   /* no cardman inserted */
988                 clear_bit(IS_ATR_VALID, &dev->flags);
989                 if (dev->flags0 & 1) {
990                         set_bit(IS_CMM_ABSENT, &dev->flags);
991                         rc = -ENODEV;
992                 }
993                 rc = -EIO;
994                 goto release_io;
995         }
996
997         DEBUGP(4, dev, "begin read answer\n");
998         j = min(count, (size_t)(dev->rlen - dev->rpos));
999         k = dev->rpos;
1000         if (k + j > 255)
1001                 j = 256 - k;
1002         DEBUGP(4, dev, "read1 j=%d\n", j);
1003         for (i = 0; i < j; i++) {
1004                 xoutb(k++, REG_BUF_ADDR(iobase));
1005                 dev->rbuf[i] = xinb(REG_BUF_DATA(iobase));
1006         }
1007         j = min(count, (size_t)(dev->rlen - dev->rpos));
1008         if (k + j > 255) {
1009                 DEBUGP(4, dev, "read2 j=%d\n", j);
1010                 dev->flags1 |= 0x10;    /* MSB buf addr set */
1011                 xoutb(dev->flags1, REG_FLAGS1(iobase));
1012                 for (; i < j; i++) {
1013                         xoutb(k++, REG_BUF_ADDR(iobase));
1014                         dev->rbuf[i] = xinb(REG_BUF_DATA(iobase));
1015                 }
1016         }
1017
1018         if (dev->proto == 0 && count > dev->rlen - dev->rpos) {
1019                 DEBUGP(4, dev, "T=0 and count > buffer\n");
1020                 dev->rbuf[i] = dev->rbuf[i - 1];
1021                 dev->rbuf[i - 1] = dev->procbyte;
1022                 j++;
1023         }
1024         count = j;
1025
1026         dev->rpos = dev->rlen + 1;
1027
1028         /* Clear T1Active */
1029         DEBUGP(4, dev, "Clear T1Active\n");
1030         dev->flags1 &= 0xdf;
1031         xoutb(dev->flags1, REG_FLAGS1(iobase));
1032
1033         xoutb(0, REG_FLAGS1(iobase));   /* clear detectCMM */
1034         /* last check before exit */
1035         if (!io_detect_cm4000(iobase, dev))
1036                 count = -ENODEV;
1037
1038         if (test_bit(IS_INVREV, &dev->flags) && count > 0)
1039                 str_invert_revert(dev->rbuf, count);
1040
1041         if (copy_to_user(buf, dev->rbuf, count))
1042                 return -EFAULT;
1043
1044 release_io:
1045         clear_bit(LOCK_IO, &dev->flags);
1046         wake_up_interruptible(&dev->ioq);
1047
1048         DEBUGP(2, dev, "<- cmm_read returns: rc = %Zi\n",
1049                (rc < 0 ? rc : count));
1050         return rc < 0 ? rc : count;
1051 }
1052
1053 static ssize_t cmm_write(struct file *filp, const char __user *buf,
1054                          size_t count, loff_t *ppos)
1055 {
1056         struct cm4000_dev *dev = (struct cm4000_dev *) filp->private_data;
1057         ioaddr_t iobase = dev->p_dev->io.BasePort1;
1058         unsigned short s;
1059         unsigned char tmp;
1060         unsigned char infolen;
1061         unsigned char sendT0;
1062         unsigned short nsend;
1063         unsigned short nr;
1064         ssize_t rc;
1065         int i;
1066
1067         DEBUGP(2, dev, "-> cmm_write(%s,%d)\n", current->comm, current->pid);
1068
1069         if (count == 0)         /* according to manpage */
1070                 return 0;
1071
1072         if (dev->proto == 0 && count < 4) {
1073                 /* T0 must have at least 4 bytes */
1074                 DEBUGP(4, dev, "T0 short write\n");
1075                 return -EIO;
1076         }
1077
1078         nr = count & 0x1ff;     /* max bytes to write */
1079
1080         sendT0 = dev->proto ? 0 : nr > 5 ? 0x08 : 0;
1081
1082         if (!pcmcia_dev_present(dev->p_dev) || /* device removed */
1083             test_bit(IS_CMM_ABSENT, &dev->flags))
1084                 return -ENODEV;
1085
1086         if (test_bit(IS_BAD_CSUM, &dev->flags)) {
1087                 DEBUGP(4, dev, "bad csum\n");
1088                 return -EIO;
1089         }
1090
1091         /*
1092          * wait for atr to become valid.
1093          * note: it is important to lock this code. if we dont, the monitor
1094          * could be run between test_bit and the the call the sleep on the
1095          * atr-queue.  if *then* the monitor detects atr valid, it will wake up
1096          * any process on the atr-queue, *but* since we have been interrupted,
1097          * we do not yet sleep on this queue. this would result in a missed
1098          * wake_up and the calling process would sleep forever (until
1099          * interrupted).  also, do *not* restore_flags before sleep_on, because
1100          * this could result in the same situation!
1101          */
1102         if (wait_event_interruptible
1103             (dev->atrq,
1104              ((filp->f_flags & O_NONBLOCK)
1105               || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags) != 0)))) {
1106                 if (filp->f_flags & O_NONBLOCK)
1107                         return -EAGAIN;
1108                 return -ERESTARTSYS;
1109         }
1110
1111         if (test_bit(IS_ATR_VALID, &dev->flags) == 0) { /* invalid atr */
1112                 DEBUGP(4, dev, "invalid ATR\n");
1113                 return -EIO;
1114         }
1115
1116         /* lock io */
1117         if (wait_event_interruptible
1118             (dev->ioq,
1119              ((filp->f_flags & O_NONBLOCK)
1120               || (test_and_set_bit(LOCK_IO, (void *)&dev->flags) == 0)))) {
1121                 if (filp->f_flags & O_NONBLOCK)
1122                         return -EAGAIN;
1123                 return -ERESTARTSYS;
1124         }
1125
1126         if (copy_from_user(dev->sbuf, buf, ((count > 512) ? 512 : count)))
1127                 return -EFAULT;
1128
1129         rc = 0;
1130         dev->flags0 = inb(REG_FLAGS0(iobase));
1131         if ((dev->flags0 & 1) == 0      /* no smartcard inserted */
1132             || dev->flags0 == 0xff) {   /* no cardman inserted */
1133                 clear_bit(IS_ATR_VALID, &dev->flags);
1134                 if (dev->flags0 & 1) {
1135                         set_bit(IS_CMM_ABSENT, &dev->flags);
1136                         rc = -ENODEV;
1137                 } else {
1138                         DEBUGP(4, dev, "IO error\n");
1139                         rc = -EIO;
1140                 }
1141                 goto release_io;
1142         }
1143
1144         xoutb(0x80, REG_FLAGS0(iobase));        /* reset SM  */
1145
1146         if (!io_detect_cm4000(iobase, dev)) {
1147                 rc = -ENODEV;
1148                 goto release_io;
1149         }
1150
1151         /* reflect T=0 send/read mode in flags1 */
1152         dev->flags1 |= (sendT0);
1153
1154         set_cardparameter(dev);
1155
1156         /* dummy read, reset flag procedure received */
1157         tmp = inb(REG_FLAGS1(iobase));
1158
1159         dev->flags1 = 0x20      /* T_Active */
1160             | (sendT0)
1161             | (test_bit(IS_INVREV, &dev->flags) ? 2 : 0)/* inverse parity  */
1162             | (((dev->baudv - 1) & 0x0100) >> 8);       /* MSB-Baud */
1163         DEBUGP(1, dev, "set dev->flags1 = 0x%.2x\n", dev->flags1);
1164         xoutb(dev->flags1, REG_FLAGS1(iobase));
1165
1166         /* xmit data */
1167         DEBUGP(4, dev, "Xmit data\n");
1168         for (i = 0; i < nr; i++) {
1169                 if (i >= 256) {
1170                         dev->flags1 = 0x20      /* T_Active */
1171                             | (sendT0)  /* SendT0 */
1172                                 /* inverse parity: */
1173                             | (test_bit(IS_INVREV, &dev->flags) ? 2 : 0)
1174                             | (((dev->baudv - 1) & 0x0100) >> 8) /* MSB-Baud */
1175                             | 0x10;     /* set address high */
1176                         DEBUGP(4, dev, "dev->flags = 0x%.2x - set address "
1177                                "high\n", dev->flags1);
1178                         xoutb(dev->flags1, REG_FLAGS1(iobase));
1179                 }
1180                 if (test_bit(IS_INVREV, &dev->flags)) {
1181                         DEBUGP(4, dev, "Apply inverse convention for 0x%.2x "
1182                                 "-> 0x%.2x\n", (unsigned char)dev->sbuf[i],
1183                               invert_revert(dev->sbuf[i]));
1184                         xoutb(i, REG_BUF_ADDR(iobase));
1185                         xoutb(invert_revert(dev->sbuf[i]),
1186                               REG_BUF_DATA(iobase));
1187                 } else {
1188                         xoutb(i, REG_BUF_ADDR(iobase));
1189                         xoutb(dev->sbuf[i], REG_BUF_DATA(iobase));
1190                 }
1191         }
1192         DEBUGP(4, dev, "Xmit done\n");
1193
1194         if (dev->proto == 0) {
1195                 /* T=0 proto: 0 byte reply  */
1196                 if (nr == 4) {
1197                         DEBUGP(4, dev, "T=0 assumes 0 byte reply\n");
1198                         xoutb(i, REG_BUF_ADDR(iobase));
1199                         if (test_bit(IS_INVREV, &dev->flags))
1200                                 xoutb(0xff, REG_BUF_DATA(iobase));
1201                         else
1202                                 xoutb(0x00, REG_BUF_DATA(iobase));
1203                 }
1204
1205                 /* numSendBytes */
1206                 if (sendT0)
1207                         nsend = nr;
1208                 else {
1209                         if (nr == 4)
1210                                 nsend = 5;
1211                         else {
1212                                 nsend = 5 + (unsigned char)dev->sbuf[4];
1213                                 if (dev->sbuf[4] == 0)
1214                                         nsend += 0x100;
1215                         }
1216                 }
1217         } else
1218                 nsend = nr;
1219
1220         /* T0: output procedure byte */
1221         if (test_bit(IS_INVREV, &dev->flags)) {
1222                 DEBUGP(4, dev, "T=0 set Procedure byte (inverse-reverse) "
1223                        "0x%.2x\n", invert_revert(dev->sbuf[1]));
1224                 xoutb(invert_revert(dev->sbuf[1]), REG_NUM_BYTES(iobase));
1225         } else {
1226                 DEBUGP(4, dev, "T=0 set Procedure byte 0x%.2x\n", dev->sbuf[1]);
1227                 xoutb(dev->sbuf[1], REG_NUM_BYTES(iobase));
1228         }
1229
1230         DEBUGP(1, dev, "set NumSendBytes = 0x%.2x\n",
1231                (unsigned char)(nsend & 0xff));
1232         xoutb((unsigned char)(nsend & 0xff), REG_NUM_SEND(iobase));
1233
1234         DEBUGP(1, dev, "Trigger CARDMAN CONTROLLER (0x%.2x)\n",
1235                0x40     /* SM_Active */
1236               | (dev->flags0 & 2 ? 0 : 4)       /* power on if needed */
1237               |(dev->proto ? 0x10 : 0x08)       /* T=1/T=0 */
1238               |(nsend & 0x100) >> 8 /* MSB numSendBytes */ );
1239         xoutb(0x40              /* SM_Active */
1240               | (dev->flags0 & 2 ? 0 : 4)       /* power on if needed */
1241               |(dev->proto ? 0x10 : 0x08)       /* T=1/T=0 */
1242               |(nsend & 0x100) >> 8,    /* MSB numSendBytes */
1243               REG_FLAGS0(iobase));
1244
1245         /* wait for xmit done */
1246         if (dev->proto == 1) {
1247                 DEBUGP(4, dev, "Wait for xmit done\n");
1248                 for (i = 0; i < 1000; i++) {
1249                         if (inb(REG_FLAGS0(iobase)) & 0x08)
1250                                 break;
1251                         msleep_interruptible(10);
1252                 }
1253                 if (i == 1000) {
1254                         DEBUGP(4, dev, "timeout waiting for xmit done\n");
1255                         rc = -EIO;
1256                         goto release_io;
1257                 }
1258         }
1259
1260         /* T=1: wait for infoLen */
1261
1262         infolen = 0;
1263         if (dev->proto) {
1264                 /* wait until infoLen is valid */
1265                 for (i = 0; i < 6000; i++) {    /* max waiting time of 1 min */
1266                         io_read_num_rec_bytes(iobase, &s);
1267                         if (s >= 3) {
1268                                 infolen = inb(REG_FLAGS1(iobase));
1269                                 DEBUGP(4, dev, "infolen=%d\n", infolen);
1270                                 break;
1271                         }
1272                         msleep_interruptible(10);
1273                 }
1274                 if (i == 6000) {
1275                         DEBUGP(4, dev, "timeout waiting for infoLen\n");
1276                         rc = -EIO;
1277                         goto release_io;
1278                 }
1279         } else
1280                 clear_bit(IS_PROCBYTE_PRESENT, &dev->flags);
1281
1282         /* numRecBytes | bit9 of numRecytes */
1283         io_read_num_rec_bytes(iobase, &dev->rlen);
1284         for (i = 0; i < 600; i++) {     /* max waiting time of 2 sec */
1285                 if (dev->proto) {
1286                         if (dev->rlen >= infolen + 4)
1287                                 break;
1288                 }
1289                 msleep_interruptible(10);
1290                 /* numRecBytes | bit9 of numRecytes */
1291                 io_read_num_rec_bytes(iobase, &s);
1292                 if (s > dev->rlen) {
1293                         DEBUGP(1, dev, "NumRecBytes inc (reset timeout)\n");
1294                         i = 0;  /* reset timeout */
1295                         dev->rlen = s;
1296                 }
1297                 /* T=0: we are done when numRecBytes doesn't
1298                  *      increment any more and NoProcedureByte
1299                  *      is set and numRecBytes == bytes sent + 6
1300                  *      (header bytes + data + 1 for sw2)
1301                  *      except when the card replies an error
1302                  *      which means, no data will be sent back.
1303                  */
1304                 else if (dev->proto == 0) {
1305                         if ((inb(REG_BUF_ADDR(iobase)) & 0x80)) {
1306                                 /* no procedure byte received since last read */
1307                                 DEBUGP(1, dev, "NoProcedure byte set\n");
1308                                 /* i=0; */
1309                         } else {
1310                                 /* procedure byte received since last read */
1311                                 DEBUGP(1, dev, "NoProcedure byte unset "
1312                                         "(reset timeout)\n");
1313                                 dev->procbyte = inb(REG_FLAGS1(iobase));
1314                                 DEBUGP(1, dev, "Read procedure byte 0x%.2x\n",
1315                                       dev->procbyte);
1316                                 i = 0;  /* resettimeout */
1317                         }
1318                         if (inb(REG_FLAGS0(iobase)) & 0x08) {
1319                                 DEBUGP(1, dev, "T0Done flag (read reply)\n");
1320                                 break;
1321                         }
1322                 }
1323                 if (dev->proto)
1324                         infolen = inb(REG_FLAGS1(iobase));
1325         }
1326         if (i == 600) {
1327                 DEBUGP(1, dev, "timeout waiting for numRecBytes\n");
1328                 rc = -EIO;
1329                 goto release_io;
1330         } else {
1331                 if (dev->proto == 0) {
1332                         DEBUGP(1, dev, "Wait for T0Done bit to be  set\n");
1333                         for (i = 0; i < 1000; i++) {
1334                                 if (inb(REG_FLAGS0(iobase)) & 0x08)
1335                                         break;
1336                                 msleep_interruptible(10);
1337                         }
1338                         if (i == 1000) {
1339                                 DEBUGP(1, dev, "timeout waiting for T0Done\n");
1340                                 rc = -EIO;
1341                                 goto release_io;
1342                         }
1343
1344                         dev->procbyte = inb(REG_FLAGS1(iobase));
1345                         DEBUGP(4, dev, "Read procedure byte 0x%.2x\n",
1346                               dev->procbyte);
1347
1348                         io_read_num_rec_bytes(iobase, &dev->rlen);
1349                         DEBUGP(4, dev, "Read NumRecBytes = %i\n", dev->rlen);
1350
1351                 }
1352         }
1353         /* T=1: read offset=zero, T=0: read offset=after challenge */
1354         dev->rpos = dev->proto ? 0 : nr == 4 ? 5 : nr > dev->rlen ? 5 : nr;
1355         DEBUGP(4, dev, "dev->rlen = %i,  dev->rpos = %i, nr = %i\n",
1356               dev->rlen, dev->rpos, nr);
1357
1358 release_io:
1359         DEBUGP(4, dev, "Reset SM\n");
1360         xoutb(0x80, REG_FLAGS0(iobase));        /* reset SM */
1361
1362         if (rc < 0) {
1363                 DEBUGP(4, dev, "Write failed but clear T_Active\n");
1364                 dev->flags1 &= 0xdf;
1365                 xoutb(dev->flags1, REG_FLAGS1(iobase));
1366         }
1367
1368         clear_bit(LOCK_IO, &dev->flags);
1369         wake_up_interruptible(&dev->ioq);
1370         wake_up_interruptible(&dev->readq);     /* tell read we have data */
1371
1372         /* ITSEC E2: clear write buffer */
1373         memset((char *)dev->sbuf, 0, 512);
1374
1375         /* return error or actually written bytes */
1376         DEBUGP(2, dev, "<- cmm_write\n");
1377         return rc < 0 ? rc : nr;
1378 }
1379
1380 static void start_monitor(struct cm4000_dev *dev)
1381 {
1382         DEBUGP(3, dev, "-> start_monitor\n");
1383         if (!dev->monitor_running) {
1384                 DEBUGP(5, dev, "create, init and add timer\n");
1385                 setup_timer(&dev->timer, monitor_card, (unsigned long)dev);
1386                 dev->monitor_running = 1;
1387                 mod_timer(&dev->timer, jiffies);
1388         } else
1389                 DEBUGP(5, dev, "monitor already running\n");
1390         DEBUGP(3, dev, "<- start_monitor\n");
1391 }
1392
1393 static void stop_monitor(struct cm4000_dev *dev)
1394 {
1395         DEBUGP(3, dev, "-> stop_monitor\n");
1396         if (dev->monitor_running) {
1397                 DEBUGP(5, dev, "stopping monitor\n");
1398                 terminate_monitor(dev);
1399                 /* reset monitor SM */
1400                 clear_bit(IS_ATR_VALID, &dev->flags);
1401                 clear_bit(IS_ATR_PRESENT, &dev->flags);
1402         } else
1403                 DEBUGP(5, dev, "monitor already stopped\n");
1404         DEBUGP(3, dev, "<- stop_monitor\n");
1405 }
1406
1407 static int cmm_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
1408                      unsigned long arg)
1409 {
1410         struct cm4000_dev *dev = filp->private_data;
1411         ioaddr_t iobase = dev->p_dev->io.BasePort1;
1412         struct pcmcia_device *link;
1413         int size;
1414         int rc;
1415         void __user *argp = (void __user *)arg;
1416 #ifdef PCMCIA_DEBUG
1417         char *ioctl_names[CM_IOC_MAXNR + 1] = {
1418                 [_IOC_NR(CM_IOCGSTATUS)] "CM_IOCGSTATUS",
1419                 [_IOC_NR(CM_IOCGATR)] "CM_IOCGATR",
1420                 [_IOC_NR(CM_IOCARDOFF)] "CM_IOCARDOFF",
1421                 [_IOC_NR(CM_IOCSPTS)] "CM_IOCSPTS",
1422                 [_IOC_NR(CM_IOSDBGLVL)] "CM4000_DBGLVL",
1423         };
1424 #endif
1425         DEBUGP(3, dev, "cmm_ioctl(device=%d.%d) %s\n", imajor(inode),
1426                iminor(inode), ioctl_names[_IOC_NR(cmd)]);
1427
1428         link = dev_table[iminor(inode)];
1429         if (!pcmcia_dev_present(link)) {
1430                 DEBUGP(4, dev, "DEV_OK false\n");
1431                 return -ENODEV;
1432         }
1433
1434         if (test_bit(IS_CMM_ABSENT, &dev->flags)) {
1435                 DEBUGP(4, dev, "CMM_ABSENT flag set\n");
1436                 return -ENODEV;
1437         }
1438
1439         if (_IOC_TYPE(cmd) != CM_IOC_MAGIC) {
1440                 DEBUGP(4, dev, "ioctype mismatch\n");
1441                 return -EINVAL;
1442         }
1443         if (_IOC_NR(cmd) > CM_IOC_MAXNR) {
1444                 DEBUGP(4, dev, "iocnr mismatch\n");
1445                 return -EINVAL;
1446         }
1447         size = _IOC_SIZE(cmd);
1448         rc = 0;
1449         DEBUGP(4, dev, "iocdir=%.4x iocr=%.4x iocw=%.4x iocsize=%d cmd=%.4x\n",
1450               _IOC_DIR(cmd), _IOC_READ, _IOC_WRITE, size, cmd);
1451
1452         if (_IOC_DIR(cmd) & _IOC_READ) {
1453                 if (!access_ok(VERIFY_WRITE, argp, size))
1454                         return -EFAULT;
1455         }
1456         if (_IOC_DIR(cmd) & _IOC_WRITE) {
1457                 if (!access_ok(VERIFY_READ, argp, size))
1458                         return -EFAULT;
1459         }
1460
1461         switch (cmd) {
1462         case CM_IOCGSTATUS:
1463                 DEBUGP(4, dev, " ... in CM_IOCGSTATUS\n");
1464                 {
1465                         int status;
1466
1467                         /* clear other bits, but leave inserted & powered as
1468                          * they are */
1469                         status = dev->flags0 & 3;
1470                         if (test_bit(IS_ATR_PRESENT, &dev->flags))
1471                                 status |= CM_ATR_PRESENT;
1472                         if (test_bit(IS_ATR_VALID, &dev->flags))
1473                                 status |= CM_ATR_VALID;
1474                         if (test_bit(IS_CMM_ABSENT, &dev->flags))
1475                                 status |= CM_NO_READER;
1476                         if (test_bit(IS_BAD_CARD, &dev->flags))
1477                                 status |= CM_BAD_CARD;
1478                         if (copy_to_user(argp, &status, sizeof(int)))
1479                                 return -EFAULT;
1480                 }
1481                 return 0;
1482         case CM_IOCGATR:
1483                 DEBUGP(4, dev, "... in CM_IOCGATR\n");
1484                 {
1485                         struct atreq __user *atreq = argp;
1486                         int tmp;
1487                         /* allow nonblocking io and being interrupted */
1488                         if (wait_event_interruptible
1489                             (dev->atrq,
1490                              ((filp->f_flags & O_NONBLOCK)
1491                               || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags)
1492                                   != 0)))) {
1493                                 if (filp->f_flags & O_NONBLOCK)
1494                                         return -EAGAIN;
1495                                 return -ERESTARTSYS;
1496                         }
1497
1498                         if (test_bit(IS_ATR_VALID, &dev->flags) == 0) {
1499                                 tmp = -1;
1500                                 if (copy_to_user(&(atreq->atr_len), &tmp,
1501                                                  sizeof(int)))
1502                                         return -EFAULT;
1503                         } else {
1504                                 if (copy_to_user(atreq->atr, dev->atr,
1505                                                  dev->atr_len))
1506                                         return -EFAULT;
1507
1508                                 tmp = dev->atr_len;
1509                                 if (copy_to_user(&(atreq->atr_len), &tmp, sizeof(int)))
1510                                         return -EFAULT;
1511                         }
1512                         return 0;
1513                 }
1514         case CM_IOCARDOFF:
1515
1516 #ifdef PCMCIA_DEBUG
1517                 DEBUGP(4, dev, "... in CM_IOCARDOFF\n");
1518                 if (dev->flags0 & 0x01) {
1519                         DEBUGP(4, dev, "    Card inserted\n");
1520                 } else {
1521                         DEBUGP(2, dev, "    No card inserted\n");
1522                 }
1523                 if (dev->flags0 & 0x02) {
1524                         DEBUGP(4, dev, "    Card powered\n");
1525                 } else {
1526                         DEBUGP(2, dev, "    Card not powered\n");
1527                 }
1528 #endif
1529
1530                 /* is a card inserted and powered? */
1531                 if ((dev->flags0 & 0x01) && (dev->flags0 & 0x02)) {
1532
1533                         /* get IO lock */
1534                         if (wait_event_interruptible
1535                             (dev->ioq,
1536                              ((filp->f_flags & O_NONBLOCK)
1537                               || (test_and_set_bit(LOCK_IO, (void *)&dev->flags)
1538                                   == 0)))) {
1539                                 if (filp->f_flags & O_NONBLOCK)
1540                                         return -EAGAIN;
1541                                 return -ERESTARTSYS;
1542                         }
1543                         /* Set Flags0 = 0x42 */
1544                         DEBUGP(4, dev, "Set Flags0=0x42 \n");
1545                         xoutb(0x42, REG_FLAGS0(iobase));
1546                         clear_bit(IS_ATR_PRESENT, &dev->flags);
1547                         clear_bit(IS_ATR_VALID, &dev->flags);
1548                         dev->mstate = M_CARDOFF;
1549                         clear_bit(LOCK_IO, &dev->flags);
1550                         if (wait_event_interruptible
1551                             (dev->atrq,
1552                              ((filp->f_flags & O_NONBLOCK)
1553                               || (test_bit(IS_ATR_VALID, (void *)&dev->flags) !=
1554                                   0)))) {
1555                                 if (filp->f_flags & O_NONBLOCK)
1556                                         return -EAGAIN;
1557                                 return -ERESTARTSYS;
1558                         }
1559                 }
1560                 /* release lock */
1561                 clear_bit(LOCK_IO, &dev->flags);
1562                 wake_up_interruptible(&dev->ioq);
1563
1564                 return 0;
1565         case CM_IOCSPTS:
1566                 {
1567                         struct ptsreq krnptsreq;
1568
1569                         if (copy_from_user(&krnptsreq, argp,
1570                                            sizeof(struct ptsreq)))
1571                                 return -EFAULT;
1572
1573                         rc = 0;
1574                         DEBUGP(4, dev, "... in CM_IOCSPTS\n");
1575                         /* wait for ATR to get valid */
1576                         if (wait_event_interruptible
1577                             (dev->atrq,
1578                              ((filp->f_flags & O_NONBLOCK)
1579                               || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags)
1580                                   != 0)))) {
1581                                 if (filp->f_flags & O_NONBLOCK)
1582                                         return -EAGAIN;
1583                                 return -ERESTARTSYS;
1584                         }
1585                         /* get IO lock */
1586                         if (wait_event_interruptible
1587                             (dev->ioq,
1588                              ((filp->f_flags & O_NONBLOCK)
1589                               || (test_and_set_bit(LOCK_IO, (void *)&dev->flags)
1590                                   == 0)))) {
1591                                 if (filp->f_flags & O_NONBLOCK)
1592                                         return -EAGAIN;
1593                                 return -ERESTARTSYS;
1594                         }
1595
1596                         if ((rc = set_protocol(dev, &krnptsreq)) != 0) {
1597                                 /* auto power_on again */
1598                                 dev->mstate = M_FETCH_ATR;
1599                                 clear_bit(IS_ATR_VALID, &dev->flags);
1600                         }
1601                         /* release lock */
1602                         clear_bit(LOCK_IO, &dev->flags);
1603                         wake_up_interruptible(&dev->ioq);
1604
1605                 }
1606                 return rc;
1607 #ifdef PCMCIA_DEBUG
1608         case CM_IOSDBGLVL:      /* set debug log level */
1609                 {
1610                         int old_pc_debug = 0;
1611
1612                         old_pc_debug = pc_debug;
1613                         if (copy_from_user(&pc_debug, argp, sizeof(int)))
1614                                 return -EFAULT;
1615
1616                         if (old_pc_debug != pc_debug)
1617                                 DEBUGP(0, dev, "Changed debug log level "
1618                                        "to %i\n", pc_debug);
1619                 }
1620                 return rc;
1621 #endif
1622         default:
1623                 DEBUGP(4, dev, "... in default (unknown IOCTL code)\n");
1624                 return -EINVAL;
1625         }
1626 }
1627
1628 static int cmm_open(struct inode *inode, struct file *filp)
1629 {
1630         struct cm4000_dev *dev;
1631         struct pcmcia_device *link;
1632         int rc, minor = iminor(inode);
1633
1634         if (minor >= CM4000_MAX_DEV)
1635                 return -ENODEV;
1636
1637         link = dev_table[minor];
1638         if (link == NULL || !pcmcia_dev_present(link))
1639                 return -ENODEV;
1640
1641         if (link->open)
1642                 return -EBUSY;
1643
1644         dev = link->priv;
1645         filp->private_data = dev;
1646
1647         DEBUGP(2, dev, "-> cmm_open(device=%d.%d process=%s,%d)\n",
1648               imajor(inode), minor, current->comm, current->pid);
1649
1650         /* init device variables, they may be "polluted" after close
1651          * or, the device may never have been closed (i.e. open failed)
1652          */
1653
1654         ZERO_DEV(dev);
1655
1656         /* opening will always block since the
1657          * monitor will be started by open, which
1658          * means we have to wait for ATR becoming
1659          * vaild = block until valid (or card
1660          * inserted)
1661          */
1662         if (filp->f_flags & O_NONBLOCK)
1663                 return -EAGAIN;
1664
1665         dev->mdelay = T_50MSEC;
1666
1667         /* start monitoring the cardstatus */
1668         start_monitor(dev);
1669
1670         link->open = 1;         /* only one open per device */
1671         rc = 0;
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->priv); /* 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         class_device_create(cmm_class, NULL, MKDEV(major, i), NULL,
1868                             "cmm%d", i);
1869
1870         return 0;
1871 }
1872
1873 static void cm4000_detach(struct pcmcia_device *link)
1874 {
1875         struct cm4000_dev *dev = link->priv;
1876         int devno;
1877
1878         /* find device */
1879         for (devno = 0; devno < CM4000_MAX_DEV; devno++)
1880                 if (dev_table[devno] == link)
1881                         break;
1882         if (devno == CM4000_MAX_DEV)
1883                 return;
1884
1885         stop_monitor(dev);
1886
1887         cm4000_release(link);
1888
1889         dev_table[devno] = NULL;
1890         kfree(dev);
1891
1892         class_device_destroy(cmm_class, MKDEV(major, devno));
1893
1894         return;
1895 }
1896
1897 static const struct file_operations cm4000_fops = {
1898         .owner  = THIS_MODULE,
1899         .read   = cmm_read,
1900         .write  = cmm_write,
1901         .ioctl  = cmm_ioctl,
1902         .open   = cmm_open,
1903         .release= cmm_close,
1904 };
1905
1906 static struct pcmcia_device_id cm4000_ids[] = {
1907         PCMCIA_DEVICE_MANF_CARD(0x0223, 0x0002),
1908         PCMCIA_DEVICE_PROD_ID12("CardMan", "4000", 0x2FB368CA, 0xA2BD8C39),
1909         PCMCIA_DEVICE_NULL,
1910 };
1911 MODULE_DEVICE_TABLE(pcmcia, cm4000_ids);
1912
1913 static struct pcmcia_driver cm4000_driver = {
1914         .owner    = THIS_MODULE,
1915         .drv      = {
1916                 .name = "cm4000_cs",
1917                 },
1918         .probe    = cm4000_probe,
1919         .remove   = cm4000_detach,
1920         .suspend  = cm4000_suspend,
1921         .resume   = cm4000_resume,
1922         .id_table = cm4000_ids,
1923 };
1924
1925 static int __init cmm_init(void)
1926 {
1927         int rc;
1928
1929         printk(KERN_INFO "%s\n", version);
1930
1931         cmm_class = class_create(THIS_MODULE, "cardman_4000");
1932         if (IS_ERR(cmm_class))
1933                 return PTR_ERR(cmm_class);
1934
1935         major = register_chrdev(0, DEVICE_NAME, &cm4000_fops);
1936         if (major < 0) {
1937                 printk(KERN_WARNING MODULE_NAME
1938                         ": could not get major number\n");
1939                 class_destroy(cmm_class);
1940                 return major;
1941         }
1942
1943         rc = pcmcia_register_driver(&cm4000_driver);
1944         if (rc < 0) {
1945                 unregister_chrdev(major, DEVICE_NAME);
1946                 class_destroy(cmm_class);
1947                 return rc;
1948         }
1949
1950         return 0;
1951 }
1952
1953 static void __exit cmm_exit(void)
1954 {
1955         printk(KERN_INFO MODULE_NAME ": unloading\n");
1956         pcmcia_unregister_driver(&cm4000_driver);
1957         unregister_chrdev(major, DEVICE_NAME);
1958         class_destroy(cmm_class);
1959 };
1960
1961 module_init(cmm_init);
1962 module_exit(cmm_exit);
1963 MODULE_LICENSE("Dual BSD/GPL");