git.oblomov.eu Git - linux-2.6/blob - 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 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   *
  22   * All rights reserved. Licensed under dual BSD/GPL license.
  23   */
  24
  25 /* #define PCMCIA_DEBUG 6 */
  26
  27 #include <linux/kernel.h>
  28 #include <linux/module.h>
  29 #include <linux/slab.h>
  30 #include <linux/init.h>
  31 #include <linux/fs.h>
  32 #include <linux/delay.h>
  33 #include <asm/uaccess.h>
  34 #include <asm/io.h>
  35
  36 #include <pcmcia/cs_types.h>
  37 #include <pcmcia/cs.h>
  38 #include <pcmcia/cistpl.h>
  39 #include <pcmcia/cisreg.h>
  40 #include <pcmcia/ciscode.h>
  41 #include <pcmcia/ds.h>
  42
  43 #include <linux/cm4000_cs.h>
  44
  45 /* #define ATR_CSUM */
  46
  47 #ifdef PCMCIA_DEBUG
  48 #define reader_to_dev(x)        (&handle_to_dev(x->link.handle))
  49 static int pc_debug = PCMCIA_DEBUG;
  50 module_param(pc_debug, int, 0600);
  51 #define DEBUGP(n, rdr, x, args...) do {                                 \
  52         if (pc_debug >= (n))                                            \
  53                 dev_printk(KERN_DEBUG, reader_to_dev(rdr), "%s:" x,     \
  54                            __FUNCTION__ , ## args);                     \
  55         } while (0)
  56 #else
  57 #define DEBUGP(n, rdr, x, args...)
  58 #endif
  59 static char *version = "cm4000_cs.c v2.4.0gm5 - All bugs added by Harald Welte";
  60
  61 #define T_1SEC          (HZ)
  62 #define T_10MSEC        msecs_to_jiffies(10)
  63 #define T_20MSEC        msecs_to_jiffies(20)
  64 #define T_40MSEC        msecs_to_jiffies(40)
  65 #define T_50MSEC        msecs_to_jiffies(50)
  66 #define T_100MSEC       msecs_to_jiffies(100)
  67 #define T_500MSEC       msecs_to_jiffies(500)
  68
  69 static void cm4000_detach(dev_link_t *link);
  70 static void cm4000_release(dev_link_t *link);
  71
  72 static int major;               /* major number we get from the kernel */
  73
  74 /* note: the first state has to have number 0 always */
  75
  76 #define M_FETCH_ATR     0
  77 #define M_TIMEOUT_WAIT  1
  78 #define M_READ_ATR_LEN  2
  79 #define M_READ_ATR      3
  80 #define M_ATR_PRESENT   4
  81 #define M_BAD_CARD      5
  82 #define M_CARDOFF       6
  83
  84 #define LOCK_IO                 0
  85 #define LOCK_MONITOR            1
  86
  87 #define IS_AUTOPPS_ACT           6
  88 #define IS_PROCBYTE_PRESENT      7
  89 #define IS_INVREV                8
  90 #define IS_ANY_T0                9
  91 #define IS_ANY_T1               10
  92 #define IS_ATR_PRESENT          11
  93 #define IS_ATR_VALID            12
  94 #define IS_CMM_ABSENT           13
  95 #define IS_BAD_LENGTH           14
  96 #define IS_BAD_CSUM             15
  97 #define IS_BAD_CARD             16
  98
  99 #define REG_FLAGS0(x)           (x + 0)
 100 #define REG_FLAGS1(x)           (x + 1)
 101 #define REG_NUM_BYTES(x)        (x + 2)
 102 #define REG_BUF_ADDR(x)         (x + 3)
 103 #define REG_BUF_DATA(x)         (x + 4)
 104 #define REG_NUM_SEND(x)         (x + 5)
 105 #define REG_BAUDRATE(x)         (x + 6)
 106 #define REG_STOPBITS(x)         (x + 7)
 107
 108 struct cm4000_dev {
 109         dev_link_t link;                /* pcmcia link */
 110         dev_node_t node;                /* OS node (major,minor) */
 111
 112         unsigned char atr[MAX_ATR];
 113         unsigned char rbuf[512];
 114         unsigned char sbuf[512];
 115
 116         wait_queue_head_t devq;         /* when removing cardman must not be
 117                                            zeroed! */
 118
 119         wait_queue_head_t ioq;          /* if IO is locked, wait on this Q */
 120         wait_queue_head_t atrq;         /* wait for ATR valid */
 121         wait_queue_head_t readq;        /* used by write to wake blk.read */
 122
 123         /* warning: do not move this fields.
 124          * initialising to zero depends on it - see ZERO_DEV below.  */
 125         unsigned char atr_csum;
 126         unsigned char atr_len_retry;
 127         unsigned short atr_len;
 128         unsigned short rlen;    /* bytes avail. after write */
 129         unsigned short rpos;    /* latest read pos. write zeroes */
 130         unsigned char procbyte; /* T=0 procedure byte */
 131         unsigned char mstate;   /* state of card monitor */
 132         unsigned char cwarn;    /* slow down warning */
 133         unsigned char flags0;   /* cardman IO-flags 0 */
 134         unsigned char flags1;   /* cardman IO-flags 1 */
 135         unsigned int mdelay;    /* variable monitor speeds, in jiffies */
 136
 137         unsigned int baudv;     /* baud value for speed */
 138         unsigned char ta1;
 139         unsigned char proto;    /* T=0, T=1, ... */
 140         unsigned long flags;    /* lock+flags (MONITOR,IO,ATR) * for concurrent
 141                                    access */
 142
 143         unsigned char pts[4];
 144
 145         struct timer_list timer;        /* used to keep monitor running */
 146         int monitor_running;
 147 };
 148
 149 #define ZERO_DEV(dev)                                           \
 150         memset(&dev->atr_csum,0,                                \
 151                 sizeof(struct cm4000_dev) -                     \
 152                 /*link*/ sizeof(dev_link_t) -                   \
 153                 /*node*/ sizeof(dev_node_t) -                   \
 154                 /*atr*/ MAX_ATR*sizeof(char) -                  \
 155                 /*rbuf*/ 512*sizeof(char) -                     \
 156                 /*sbuf*/ 512*sizeof(char) -                     \
 157                 /*queue*/ 4*sizeof(wait_queue_head_t))
 158
 159 static dev_info_t dev_info = MODULE_NAME;
 160 static dev_link_t *dev_table[CM4000_MAX_DEV];
 161
 162 /* This table doesn't use spaces after the comma between fields and thus
 163  * violates CodingStyle.  However, I don't really think wrapping it around will
 164  * make it any clearer to read -HW */
 165 static unsigned char fi_di_table[10][14] = {
 166 /*FI     00   01   02   03   04   05   06   07   08   09   10   11   12   13 */
 167 /*DI */
 168 /* 0 */ {0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11},
 169 /* 1 */ {0x01,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x91,0x11,0x11,0x11,0x11},
 170 /* 2 */ {0x02,0x12,0x22,0x32,0x11,0x11,0x11,0x11,0x11,0x92,0xA2,0xB2,0x11,0x11},
 171 /* 3 */ {0x03,0x13,0x23,0x33,0x43,0x53,0x63,0x11,0x11,0x93,0xA3,0xB3,0xC3,0xD3},
 172 /* 4 */ {0x04,0x14,0x24,0x34,0x44,0x54,0x64,0x11,0x11,0x94,0xA4,0xB4,0xC4,0xD4},
 173 /* 5 */ {0x00,0x15,0x25,0x35,0x45,0x55,0x65,0x11,0x11,0x95,0xA5,0xB5,0xC5,0xD5},
 174 /* 6 */ {0x06,0x16,0x26,0x36,0x46,0x56,0x66,0x11,0x11,0x96,0xA6,0xB6,0xC6,0xD6},
 175 /* 7 */ {0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11},
 176 /* 8 */ {0x08,0x11,0x28,0x38,0x48,0x58,0x68,0x11,0x11,0x98,0xA8,0xB8,0xC8,0xD8},
 177 /* 9 */ {0x09,0x19,0x29,0x39,0x49,0x59,0x69,0x11,0x11,0x99,0xA9,0xB9,0xC9,0xD9}
 178 };
 179
 180 #ifndef PCMCIA_DEBUG
 181 #define xoutb   outb
 182 #define xinb    inb
 183 #else
 184 static inline void xoutb(unsigned char val, unsigned short port)
 185 {
 186         if (pc_debug >= 7)
 187                 printk(KERN_DEBUG "outb(val=%.2x,port=%.4x)\n", val, port);
 188         outb(val, port);
 189 }
 190 static inline unsigned char xinb(unsigned short port)
 191 {
 192         unsigned char val;
 193
 194         val = inb(port);
 195         if (pc_debug >= 7)
 196                 printk(KERN_DEBUG "%.2x=inb(%.4x)\n", val, port);
 197
 198         return val;
 199 }
 200 #endif
 201
 202 #define b_0000  15
 203 #define b_0001  14
 204 #define b_0010  13
 205 #define b_0011  12
 206 #define b_0100  11
 207 #define b_0101  10
 208 #define b_0110  9
 209 #define b_0111  8
 210 #define b_1000  7
 211 #define b_1001  6
 212 #define b_1010  5
 213 #define b_1011  4
 214 #define b_1100  3
 215 #define b_1101  2
 216 #define b_1110  1
 217 #define b_1111  0
 218
 219 static unsigned char irtab[16] = {
 220         b_0000, b_1000, b_0100, b_1100,
 221         b_0010, b_1010, b_0110, b_1110,
 222         b_0001, b_1001, b_0101, b_1101,
 223         b_0011, b_1011, b_0111, b_1111
 224 };
 225
 226 static void str_invert_revert(unsigned char *b, int len)
 227 {
 228         int i;
 229
 230         for (i = 0; i < len; i++)
 231                 b[i] = (irtab[b[i] & 0x0f] << 4) | irtab[b[i] >> 4];
 232 }
 233
 234 static unsigned char invert_revert(unsigned char ch)
 235 {
 236         return (irtab[ch & 0x0f] << 4) | irtab[ch >> 4];
 237 }
 238
 239 #define ATRLENCK(dev,pos) \
 240         if (pos>=dev->atr_len || pos>=MAX_ATR) \
 241                 goto return_0;
 242
 243 static unsigned int calc_baudv(unsigned char fidi)
 244 {
 245         unsigned int wcrcf, wbrcf, fi_rfu, di_rfu;
 246
 247         fi_rfu = 372;
 248         di_rfu = 1;
 249
 250         /* FI */
 251         switch ((fidi >> 4) & 0x0F) {
 252         case 0x00:
 253                 wcrcf = 372;
 254                 break;
 255         case 0x01:
 256                 wcrcf = 372;
 257                 break;
 258         case 0x02:
 259                 wcrcf = 558;
 260                 break;
 261         case 0x03:
 262                 wcrcf = 744;
 263                 break;
 264         case 0x04:
 265                 wcrcf = 1116;
 266                 break;
 267         case 0x05:
 268                 wcrcf = 1488;
 269                 break;
 270         case 0x06:
 271                 wcrcf = 1860;
 272                 break;
 273         case 0x07:
 274                 wcrcf = fi_rfu;
 275                 break;
 276         case 0x08:
 277                 wcrcf = fi_rfu;
 278                 break;
 279         case 0x09:
 280                 wcrcf = 512;
 281                 break;
 282         case 0x0A:
 283                 wcrcf = 768;
 284                 break;
 285         case 0x0B:
 286                 wcrcf = 1024;
 287                 break;
 288         case 0x0C:
 289                 wcrcf = 1536;
 290                 break;
 291         case 0x0D:
 292                 wcrcf = 2048;
 293                 break;
 294         default:
 295                 wcrcf = fi_rfu;
 296                 break;
 297         }
 298
 299         /* DI */
 300         switch (fidi & 0x0F) {
 301         case 0x00:
 302                 wbrcf = di_rfu;
 303                 break;
 304         case 0x01:
 305                 wbrcf = 1;
 306                 break;
 307         case 0x02:
 308                 wbrcf = 2;
 309                 break;
 310         case 0x03:
 311                 wbrcf = 4;
 312                 break;
 313         case 0x04:
 314                 wbrcf = 8;
 315                 break;
 316         case 0x05:
 317                 wbrcf = 16;
 318                 break;
 319         case 0x06:
 320                 wbrcf = 32;
 321                 break;
 322         case 0x07:
 323                 wbrcf = di_rfu;
 324                 break;
 325         case 0x08:
 326                 wbrcf = 12;
 327                 break;
 328         case 0x09:
 329                 wbrcf = 20;
 330                 break;
 331         default:
 332                 wbrcf = di_rfu;
 333                 break;
 334         }
 335
 336         return (wcrcf / wbrcf);
 337 }
 338
 339 static unsigned short io_read_num_rec_bytes(ioaddr_t iobase, unsigned short *s)
 340 {
 341         unsigned short tmp;
 342
 343         tmp = *s = 0;
 344         do {
 345                 *s = tmp;
 346                 tmp = inb(REG_NUM_BYTES(iobase)) |
 347                                 (inb(REG_FLAGS0(iobase)) & 4 ? 0x100 : 0);
 348         } while (tmp != *s);
 349
 350         return *s;
 351 }
 352
 353 static int parse_atr(struct cm4000_dev *dev)
 354 {
 355         unsigned char any_t1, any_t0;
 356         unsigned char ch, ifno;
 357         int ix, done;
 358
 359         DEBUGP(3, dev, "-> parse_atr: dev->atr_len = %i\n", dev->atr_len);
 360
 361         if (dev->atr_len < 3) {
 362                 DEBUGP(5, dev, "parse_atr: atr_len < 3\n");
 363                 return 0;
 364         }
 365
 366         if (dev->atr[0] == 0x3f)
 367                 set_bit(IS_INVREV, &dev->flags);
 368         else
 369                 clear_bit(IS_INVREV, &dev->flags);
 370         ix = 1;
 371         ifno = 1;
 372         ch = dev->atr[1];
 373         dev->proto = 0;         /* XXX PROTO */
 374         any_t1 = any_t0 = done = 0;
 375         dev->ta1 = 0x11;        /* defaults to 9600 baud */
 376         do {
 377                 if (ifno == 1 && (ch & 0x10)) {
 378                         /* read first interface byte and TA1 is present */
 379                         dev->ta1 = dev->atr[2];
 380                         DEBUGP(5, dev, "Card says FiDi is 0x%.2x\n", dev->ta1);
 381                         ifno++;
 382                 } else if ((ifno == 2) && (ch & 0x10)) { /* TA(2) */
 383                         dev->ta1 = 0x11;
 384                         ifno++;
 385                 }
 386
 387                 DEBUGP(5, dev, "Yi=%.2x\n", ch & 0xf0);
 388                 ix += ((ch & 0x10) >> 4)        /* no of int.face chars */
 389                     +((ch & 0x20) >> 5)
 390                     + ((ch & 0x40) >> 6)
 391                     + ((ch & 0x80) >> 7);
 392                 /* ATRLENCK(dev,ix); */
 393                 if (ch & 0x80) {        /* TDi */
 394                         ch = dev->atr[ix];
 395                         if ((ch & 0x0f)) {
 396                                 any_t1 = 1;
 397                                 DEBUGP(5, dev, "card is capable of T=1\n");
 398                         } else {
 399                                 any_t0 = 1;
 400                                 DEBUGP(5, dev, "card is capable of T=0\n");
 401                         }
 402                 } else
 403                         done = 1;
 404         } while (!done);
 405
 406         DEBUGP(5, dev, "ix=%d noHist=%d any_t1=%d\n",
 407               ix, dev->atr[1] & 15, any_t1);
 408         if (ix + 1 + (dev->atr[1] & 0x0f) + any_t1 != dev->atr_len) {
 409                 DEBUGP(5, dev, "length error\n");
 410                 return 0;
 411         }
 412         if (any_t0)
 413                 set_bit(IS_ANY_T0, &dev->flags);
 414
 415         if (any_t1) {           /* compute csum */
 416                 dev->atr_csum = 0;
 417 #ifdef ATR_CSUM
 418                 for (i = 1; i < dev->atr_len; i++)
 419                         dev->atr_csum ^= dev->atr[i];
 420                 if (dev->atr_csum) {
 421                         set_bit(IS_BAD_CSUM, &dev->flags);
 422                         DEBUGP(5, dev, "bad checksum\n");
 423                         goto return_0;
 424                 }
 425 #endif
 426                 if (any_t0 == 0)
 427                         dev->proto = 1; /* XXX PROTO */
 428                 set_bit(IS_ANY_T1, &dev->flags);
 429         }
 430
 431         return 1;
 432 }
 433
 434 struct card_fixup {
 435         char atr[12];
 436         u_int8_t atr_len;
 437         u_int8_t stopbits;
 438 };
 439
 440 static struct card_fixup card_fixups[] = {
 441         {       /* ACOS */
 442                 .atr = { 0x3b, 0xb3, 0x11, 0x00, 0x00, 0x41, 0x01 },
 443                 .atr_len = 7,
 444                 .stopbits = 0x03,
 445         },
 446         {       /* Motorola */
 447                 .atr = {0x3b, 0x76, 0x13, 0x00, 0x00, 0x80, 0x62, 0x07,
 448                         0x41, 0x81, 0x81 },
 449                 .atr_len = 11,
 450                 .stopbits = 0x04,
 451         },
 452 };
 453
 454 static void set_cardparameter(struct cm4000_dev *dev)
 455 {
 456         int i;
 457         ioaddr_t iobase = dev->link.io.BasePort1;
 458         u_int8_t stopbits = 0x02; /* ISO default */
 459
 460         DEBUGP(3, dev, "-> set_cardparameter\n");
 461
 462         dev->flags1 = dev->flags1 | (((dev->baudv - 1) & 0x0100) >> 8);
 463         xoutb(dev->flags1, REG_FLAGS1(iobase));
 464         DEBUGP(5, dev, "flags1 = 0x%02x\n", dev->flags1);
 465
 466         /* set baudrate */
 467         xoutb((unsigned char)((dev->baudv - 1) & 0xFF), REG_BAUDRATE(iobase));
 468
 469         DEBUGP(5, dev, "baudv = %i -> write 0x%02x\n", dev->baudv,
 470               ((dev->baudv - 1) & 0xFF));
 471
 472         /* set stopbits */
 473         for (i = 0; i < ARRAY_SIZE(card_fixups); i++) {
 474                 if (!memcmp(dev->atr, card_fixups[i].atr,
 475                             card_fixups[i].atr_len))
 476                         stopbits = card_fixups[i].stopbits;
 477         }
 478         xoutb(stopbits, REG_STOPBITS(iobase));
 479
 480         DEBUGP(3, dev, "<- set_cardparameter\n");
 481 }
 482
 483 static int set_protocol(struct cm4000_dev *dev, struct ptsreq *ptsreq)
 484 {
 485
 486         unsigned long tmp, i;
 487         unsigned short num_bytes_read;
 488         unsigned char pts_reply[4];
 489         ssize_t rc;
 490         ioaddr_t iobase = dev->link.io.BasePort1;
 491
 492         rc = 0;
 493
 494         DEBUGP(3, dev, "-> set_protocol\n");
 495         DEBUGP(5, dev, "ptsreq->Protocol = 0x%.8x, ptsreq->Flags=0x%.8x, "
 496                  "ptsreq->pts1=0x%.2x, ptsreq->pts2=0x%.2x, "
 497                  "ptsreq->pts3=0x%.2x\n", (unsigned int)ptsreq->protocol,
 498                  (unsigned int)ptsreq->flags, ptsreq->pts1, ptsreq->pts2,
 499                  ptsreq->pts3);
 500
 501         /* Fill PTS structure */
 502         dev->pts[0] = 0xff;
 503         dev->pts[1] = 0x00;
 504         tmp = ptsreq->protocol;
 505         while ((tmp = (tmp >> 1)) > 0)
 506                 dev->pts[1]++;
 507         dev->proto = dev->pts[1];       /* Set new protocol */
 508         dev->pts[1] = (0x01 << 4) | (dev->pts[1]);
 509
 510         /* Correct Fi/Di according to CM4000 Fi/Di table */
 511         DEBUGP(5, dev, "Ta(1) from ATR is 0x%.2x\n", dev->ta1);
 512         /* set Fi/Di according to ATR TA(1) */
 513         dev->pts[2] = fi_di_table[dev->ta1 & 0x0F][(dev->ta1 >> 4) & 0x0F];
 514
 515         /* Calculate PCK character */
 516         dev->pts[3] = dev->pts[0] ^ dev->pts[1] ^ dev->pts[2];
 517
 518         DEBUGP(5, dev, "pts0=%.2x, pts1=%.2x, pts2=%.2x, pts3=%.2x\n",
 519                dev->pts[0], dev->pts[1], dev->pts[2], dev->pts[3]);
 520
 521         /* check card convention */
 522         if (test_bit(IS_INVREV, &dev->flags))
 523                 str_invert_revert(dev->pts, 4);
 524
 525         /* reset SM */
 526         xoutb(0x80, REG_FLAGS0(iobase));
 527
 528         /* Enable access to the message buffer */
 529         DEBUGP(5, dev, "Enable access to the messages buffer\n");
 530         dev->flags1 = 0x20      /* T_Active */
 531             | (test_bit(IS_INVREV, &dev->flags) ? 0x02 : 0x00) /* inv parity */
 532             | ((dev->baudv >> 8) & 0x01);       /* MSB-baud */
 533         xoutb(dev->flags1, REG_FLAGS1(iobase));
 534
 535         DEBUGP(5, dev, "Enable message buffer -> flags1 = 0x%.2x\n",
 536                dev->flags1);
 537
 538         /* write challenge to the buffer */
 539         DEBUGP(5, dev, "Write challenge to buffer: ");
 540         for (i = 0; i < 4; i++) {
 541                 xoutb(i, REG_BUF_ADDR(iobase));
 542                 xoutb(dev->pts[i], REG_BUF_DATA(iobase));       /* buf data */
 543 #ifdef PCMCIA_DEBUG
 544                 if (pc_debug >= 5)
 545                         printk("0x%.2x ", dev->pts[i]);
 546         }
 547         if (pc_debug >= 5)
 548                 printk("\n");
 549 #else
 550         }
 551 #endif
 552
 553         /* set number of bytes to write */
 554         DEBUGP(5, dev, "Set number of bytes to write\n");
 555         xoutb(0x04, REG_NUM_SEND(iobase));
 556
 557         /* Trigger CARDMAN CONTROLLER */
 558         xoutb(0x50, REG_FLAGS0(iobase));
 559
 560         /* Monitor progress */
 561         /* wait for xmit done */
 562         DEBUGP(5, dev, "Waiting for NumRecBytes getting valid\n");
 563
 564         for (i = 0; i < 100; i++) {
 565                 if (inb(REG_FLAGS0(iobase)) & 0x08) {
 566                         DEBUGP(5, dev, "NumRecBytes is valid\n");
 567                         break;
 568                 }
 569                 mdelay(10);
 570         }
 571         if (i == 100) {
 572                 DEBUGP(5, dev, "Timeout waiting for NumRecBytes getting "
 573                        "valid\n");
 574                 rc = -EIO;
 575                 goto exit_setprotocol;
 576         }
 577
 578         DEBUGP(5, dev, "Reading NumRecBytes\n");
 579         for (i = 0; i < 100; i++) {
 580                 io_read_num_rec_bytes(iobase, &num_bytes_read);
 581                 if (num_bytes_read >= 4) {
 582                         DEBUGP(2, dev, "NumRecBytes = %i\n", num_bytes_read);
 583                         break;
 584                 }
 585                 mdelay(10);
 586         }
 587
 588         /* check whether it is a short PTS reply? */
 589         if (num_bytes_read == 3)
 590                 i = 0;
 591
 592         if (i == 100) {
 593                 DEBUGP(5, dev, "Timeout reading num_bytes_read\n");
 594                 rc = -EIO;
 595                 goto exit_setprotocol;
 596         }
 597
 598         DEBUGP(5, dev, "Reset the CARDMAN CONTROLLER\n");
 599         xoutb(0x80, REG_FLAGS0(iobase));
 600
 601         /* Read PPS reply */
 602         DEBUGP(5, dev, "Read PPS reply\n");
 603         for (i = 0; i < num_bytes_read; i++) {
 604                 xoutb(i, REG_BUF_ADDR(iobase));
 605                 pts_reply[i] = inb(REG_BUF_DATA(iobase));
 606         }
 607
 608 #ifdef PCMCIA_DEBUG
 609         DEBUGP(2, dev, "PTSreply: ");
 610         for (i = 0; i < num_bytes_read; i++) {
 611                 if (pc_debug >= 5)
 612                         printk("0x%.2x ", pts_reply[i]);
 613         }
 614         printk("\n");
 615 #endif  /* PCMCIA_DEBUG */
 616
 617         DEBUGP(5, dev, "Clear Tactive in Flags1\n");
 618         xoutb(0x20, REG_FLAGS1(iobase));
 619
 620         /* Compare ptsreq and ptsreply */
 621         if ((dev->pts[0] == pts_reply[0]) &&
 622             (dev->pts[1] == pts_reply[1]) &&
 623             (dev->pts[2] == pts_reply[2]) && (dev->pts[3] == pts_reply[3])) {
 624                 /* setcardparameter according to PPS */
 625                 dev->baudv = calc_baudv(dev->pts[2]);
 626                 set_cardparameter(dev);
 627         } else if ((dev->pts[0] == pts_reply[0]) &&
 628                    ((dev->pts[1] & 0xef) == pts_reply[1]) &&
 629                    ((pts_reply[0] ^ pts_reply[1]) == pts_reply[2])) {
 630                 /* short PTS reply, set card parameter to default values */
 631                 dev->baudv = calc_baudv(0x11);
 632                 set_cardparameter(dev);
 633         } else
 634                 rc = -EIO;
 635
 636 exit_setprotocol:
 637         DEBUGP(3, dev, "<- set_protocol\n");
 638         return rc;
 639 }
 640
 641 static int io_detect_cm4000(ioaddr_t iobase, struct cm4000_dev *dev)
 642 {
 643
 644         /* note: statemachine is assumed to be reset */
 645         if (inb(REG_FLAGS0(iobase)) & 8) {
 646                 clear_bit(IS_ATR_VALID, &dev->flags);
 647                 set_bit(IS_CMM_ABSENT, &dev->flags);
 648                 return 0;       /* detect CMM = 1 -> failure */
 649         }
 650         /* xoutb(0x40, REG_FLAGS1(iobase)); detectCMM */
 651         xoutb(dev->flags1 | 0x40, REG_FLAGS1(iobase));
 652         if ((inb(REG_FLAGS0(iobase)) & 8) == 0) {
 653                 clear_bit(IS_ATR_VALID, &dev->flags);
 654                 set_bit(IS_CMM_ABSENT, &dev->flags);
 655                 return 0;       /* detect CMM=0 -> failure */
 656         }
 657         /* clear detectCMM again by restoring original flags1 */
 658         xoutb(dev->flags1, REG_FLAGS1(iobase));
 659         return 1;
 660 }
 661
 662 static void terminate_monitor(struct cm4000_dev *dev)
 663 {
 664
 665         /* tell the monitor to stop and wait until
 666          * it terminates.
 667          */
 668         DEBUGP(3, dev, "-> terminate_monitor\n");
 669         wait_event_interruptible(dev->devq,
 670                                  test_and_set_bit(LOCK_MONITOR,
 671                                                   (void *)&dev->flags));
 672
 673         /* now, LOCK_MONITOR has been set.
 674          * allow a last cycle in the monitor.
 675          * the monitor will indicate that it has
 676          * finished by clearing this bit.
 677          */
 678         DEBUGP(5, dev, "Now allow last cycle of monitor!\n");
 679         while (test_bit(LOCK_MONITOR, (void *)&dev->flags))
 680                 msleep(25);
 681
 682         DEBUGP(5, dev, "Delete timer\n");
 683         del_timer_sync(&dev->timer);
 684 #ifdef PCMCIA_DEBUG
 685         dev->monitor_running = 0;
 686 #endif
 687
 688         DEBUGP(3, dev, "<- terminate_monitor\n");
 689 }
 690
 691 /*
 692  * monitor the card every 50msec. as a side-effect, retrieve the
 693  * atr once a card is inserted. another side-effect of retrieving the
 694  * atr is that the card will be powered on, so there is no need to
 695  * power on the card explictely from the application: the driver
 696  * is already doing that for you.
 697  */
 698
 699 static void monitor_card(unsigned long p)
 700 {
 701         struct cm4000_dev *dev = (struct cm4000_dev *) p;
 702         ioaddr_t iobase = dev->link.io.BasePort1;
 703         unsigned short s;
 704         struct ptsreq ptsreq;
 705         int i, atrc;
 706
 707         DEBUGP(7, dev, "->  monitor_card\n");
 708
 709         /* if someone has set the lock for us: we're done! */
 710         if (test_and_set_bit(LOCK_MONITOR, &dev->flags)) {
 711                 DEBUGP(4, dev, "About to stop monitor\n");
 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                 clear_bit(LOCK_MONITOR, &dev->flags);
 718                 /* close et al. are sleeping on devq, so wake it */
 719                 wake_up_interruptible(&dev->devq);
 720                 DEBUGP(2, dev, "<- monitor_card (we are done now)\n");
 721                 return;
 722         }
 723
 724         /* try to lock io: if it is already locked, just add another timer */
 725         if (test_and_set_bit(LOCK_IO, (void *)&dev->flags)) {
 726                 DEBUGP(4, dev, "Couldn't get IO lock\n");
 727                 goto return_with_timer;
 728         }
 729
 730         /* is a card/a reader inserted at all ? */
 731         dev->flags0 = xinb(REG_FLAGS0(iobase));
 732         DEBUGP(7, dev, "dev->flags0 = 0x%2x\n", dev->flags0);
 733         DEBUGP(7, dev, "smartcard present: %s\n",
 734                dev->flags0 & 1 ? "yes" : "no");
 735         DEBUGP(7, dev, "cardman present: %s\n",
 736                dev->flags0 == 0xff ? "no" : "yes");
 737
 738         if ((dev->flags0 & 1) == 0      /* no smartcard inserted */
 739             || dev->flags0 == 0xff) {   /* no cardman inserted */
 740                 /* no */
 741                 dev->rlen =
 742                     dev->rpos =
 743                     dev->atr_csum = dev->atr_len_retry = dev->cwarn = 0;
 744                 dev->mstate = M_FETCH_ATR;
 745
 746                 dev->flags &= 0x000000ff; /* only keep IO and MONITOR locks */
 747
 748                 if (dev->flags0 == 0xff) {
 749                         DEBUGP(4, dev, "set IS_CMM_ABSENT bit\n");
 750                         set_bit(IS_CMM_ABSENT, &dev->flags);
 751                 } else if (test_bit(IS_CMM_ABSENT, &dev->flags)) {
 752                         DEBUGP(4, dev, "clear IS_CMM_ABSENT bit "
 753                                "(card is removed)\n");
 754                         clear_bit(IS_CMM_ABSENT, &dev->flags);
 755                 }
 756
 757                 goto release_io;
 758         } else if ((dev->flags0 & 1) && test_bit(IS_CMM_ABSENT, &dev->flags)) {
 759                 /* cardman and card present but cardman was absent before
 760                  * (after suspend with inserted card) */
 761                 DEBUGP(4, dev, "clear IS_CMM_ABSENT bit (card is inserted)\n");
 762                 clear_bit(IS_CMM_ABSENT, &dev->flags);
 763         }
 764
 765         if (test_bit(IS_ATR_VALID, &dev->flags) == 1) {
 766                 DEBUGP(7, dev, "believe ATR is already valid (do nothing)\n");
 767                 goto release_io;
 768         }
 769
 770         switch (dev->mstate) {
 771                 unsigned char flags0;
 772         case M_CARDOFF:
 773                 DEBUGP(4, dev, "M_CARDOFF\n");
 774                 flags0 = inb(REG_FLAGS0(iobase));
 775                 if (flags0 & 0x02) {
 776                         /* wait until Flags0 indicate power is off */
 777                         dev->mdelay = T_10MSEC;
 778                 } else {
 779                         /* Flags0 indicate power off and no card inserted now;
 780                          * Reset CARDMAN CONTROLLER */
 781                         xoutb(0x80, REG_FLAGS0(iobase));
 782
 783                         /* prepare for fetching ATR again: after card off ATR
 784                          * is read again automatically */
 785                         dev->rlen =
 786                             dev->rpos =
 787                             dev->atr_csum =
 788                             dev->atr_len_retry = dev->cwarn = 0;
 789                         dev->mstate = M_FETCH_ATR;
 790
 791                         /* minimal gap between CARDOFF and read ATR is 50msec */
 792                         dev->mdelay = T_50MSEC;
 793                 }
 794                 break;
 795         case M_FETCH_ATR:
 796                 DEBUGP(4, dev, "M_FETCH_ATR\n");
 797                 xoutb(0x80, REG_FLAGS0(iobase));
 798                 DEBUGP(4, dev, "Reset BAUDV to 9600\n");
 799                 dev->baudv = 0x173;     /* 9600 */
 800                 xoutb(0x02, REG_STOPBITS(iobase));      /* stopbits=2 */
 801                 xoutb(0x73, REG_BAUDRATE(iobase));      /* baud value */
 802                 xoutb(0x21, REG_FLAGS1(iobase));        /* T_Active=1, baud
 803                                                            value */
 804                 /* warm start vs. power on: */
 805                 xoutb(dev->flags0 & 2 ? 0x46 : 0x44, REG_FLAGS0(iobase));
 806                 dev->mdelay = T_40MSEC;
 807                 dev->mstate = M_TIMEOUT_WAIT;
 808                 break;
 809         case M_TIMEOUT_WAIT:
 810                 DEBUGP(4, dev, "M_TIMEOUT_WAIT\n");
 811                 /* numRecBytes */
 812                 io_read_num_rec_bytes(iobase, &dev->atr_len);
 813                 dev->mdelay = T_10MSEC;
 814                 dev->mstate = M_READ_ATR_LEN;
 815                 break;
 816         case M_READ_ATR_LEN:
 817                 DEBUGP(4, dev, "M_READ_ATR_LEN\n");
 818                 /* infinite loop possible, since there is no timeout */
 819
 820 #define MAX_ATR_LEN_RETRY       100
 821
 822                 if (dev->atr_len == io_read_num_rec_bytes(iobase, &s)) {
 823                         if (dev->atr_len_retry++ >= MAX_ATR_LEN_RETRY) {                                        /* + XX msec */
 824                                 dev->mdelay = T_10MSEC;
 825                                 dev->mstate = M_READ_ATR;
 826                         }
 827                 } else {
 828                         dev->atr_len = s;
 829                         dev->atr_len_retry = 0; /* set new timeout */
 830                 }
 831
 832                 DEBUGP(4, dev, "Current ATR_LEN = %i\n", dev->atr_len);
 833                 break;
 834         case M_READ_ATR:
 835                 DEBUGP(4, dev, "M_READ_ATR\n");
 836                 xoutb(0x80, REG_FLAGS0(iobase));        /* reset SM */
 837                 for (i = 0; i < dev->atr_len; i++) {
 838                         xoutb(i, REG_BUF_ADDR(iobase));
 839                         dev->atr[i] = inb(REG_BUF_DATA(iobase));
 840                 }
 841                 /* Deactivate T_Active flags */
 842                 DEBUGP(4, dev, "Deactivate T_Active flags\n");
 843                 dev->flags1 = 0x01;
 844                 xoutb(dev->flags1, REG_FLAGS1(iobase));
 845
 846                 /* atr is present (which doesnt mean it's valid) */
 847                 set_bit(IS_ATR_PRESENT, &dev->flags);
 848                 if (dev->atr[0] == 0x03)
 849                         str_invert_revert(dev->atr, dev->atr_len);
 850                 atrc = parse_atr(dev);
 851                 if (atrc == 0) {        /* atr invalid */
 852                         dev->mdelay = 0;
 853                         dev->mstate = M_BAD_CARD;
 854                 } else {
 855                         dev->mdelay = T_50MSEC;
 856                         dev->mstate = M_ATR_PRESENT;
 857                         set_bit(IS_ATR_VALID, &dev->flags);
 858                 }
 859
 860                 if (test_bit(IS_ATR_VALID, &dev->flags) == 1) {
 861                         DEBUGP(4, dev, "monitor_card: ATR valid\n");
 862                         /* if ta1 == 0x11, no PPS necessary (default values) */
 863                         /* do not do PPS with multi protocol cards */
 864                         if ((test_bit(IS_AUTOPPS_ACT, &dev->flags) == 0) &&
 865                             (dev->ta1 != 0x11) &&
 866                             !(test_bit(IS_ANY_T0, &dev->flags) &&
 867                             test_bit(IS_ANY_T1, &dev->flags))) {
 868                                 DEBUGP(4, dev, "Perform AUTOPPS\n");
 869                                 set_bit(IS_AUTOPPS_ACT, &dev->flags);
 870                                 ptsreq.protocol = ptsreq.protocol =
 871                                     (0x01 << dev->proto);
 872                                 ptsreq.flags = 0x01;
 873                                 ptsreq.pts1 = 0x00;
 874                                 ptsreq.pts2 = 0x00;
 875                                 ptsreq.pts3 = 0x00;
 876                                 if (set_protocol(dev, &ptsreq) == 0) {
 877                                         DEBUGP(4, dev, "AUTOPPS ret SUCC\n");
 878                                         clear_bit(IS_AUTOPPS_ACT, &dev->flags);
 879                                         wake_up_interruptible(&dev->atrq);
 880                                 } else {
 881                                         DEBUGP(4, dev, "AUTOPPS failed: "
 882                                                "repower using defaults\n");
 883                                         /* prepare for repowering  */
 884                                         clear_bit(IS_ATR_PRESENT, &dev->flags);
 885                                         clear_bit(IS_ATR_VALID, &dev->flags);
 886                                         dev->rlen =
 887                                             dev->rpos =
 888                                             dev->atr_csum =
 889                                             dev->atr_len_retry = dev->cwarn = 0;
 890                                         dev->mstate = M_FETCH_ATR;
 891
 892                                         dev->mdelay = T_50MSEC;
 893                                 }
 894                         } else {
 895                                 /* for cards which use slightly different
 896                                  * params (extra guard time) */
 897                                 set_cardparameter(dev);
 898                                 if (test_bit(IS_AUTOPPS_ACT, &dev->flags) == 1)
 899                                         DEBUGP(4, dev, "AUTOPPS already active "
 900                                                "2nd try:use default values\n");
 901                                 if (dev->ta1 == 0x11)
 902                                         DEBUGP(4, dev, "No AUTOPPS necessary "
 903                                                "TA(1)==0x11\n");
 904                                 if (test_bit(IS_ANY_T0, &dev->flags)
 905                                     && test_bit(IS_ANY_T1, &dev->flags))
 906                                         DEBUGP(4, dev, "Do NOT perform AUTOPPS "
 907                                                "with multiprotocol cards\n");
 908                                 clear_bit(IS_AUTOPPS_ACT, &dev->flags);
 909                                 wake_up_interruptible(&dev->atrq);
 910                         }
 911                 } else {
 912                         DEBUGP(4, dev, "ATR invalid\n");
 913                         wake_up_interruptible(&dev->atrq);
 914                 }
 915                 break;
 916         case M_BAD_CARD:
 917                 DEBUGP(4, dev, "M_BAD_CARD\n");
 918                 /* slow down warning, but prompt immediately after insertion */
 919                 if (dev->cwarn == 0 || dev->cwarn == 10) {
 920                         set_bit(IS_BAD_CARD, &dev->flags);
 921                         printk(KERN_WARNING MODULE_NAME ": device %s: ",
 922                                dev->node.dev_name);
 923                         if (test_bit(IS_BAD_CSUM, &dev->flags)) {
 924                                 DEBUGP(4, dev, "ATR checksum (0x%.2x, should "
 925                                        "be zero) failed\n", dev->atr_csum);
 926                         }
 927 #ifdef PCMCIA_DEBUG
 928                         else if (test_bit(IS_BAD_LENGTH, &dev->flags)) {
 929                                 DEBUGP(4, dev, "ATR length error\n");
 930                         } else {
 931                                 DEBUGP(4, dev, "card damaged or wrong way "
 932                                         "inserted\n");
 933                         }
 934 #endif
 935                         dev->cwarn = 0;
 936                         wake_up_interruptible(&dev->atrq);      /* wake open */
 937                 }
 938                 dev->cwarn++;
 939                 dev->mdelay = T_100MSEC;
 940                 dev->mstate = M_FETCH_ATR;
 941                 break;
 942         default:
 943                 DEBUGP(7, dev, "Unknown action\n");
 944                 break;          /* nothing */
 945         }
 946
 947 release_io:
 948         DEBUGP(7, dev, "release_io\n");
 949         clear_bit(LOCK_IO, &dev->flags);
 950         wake_up_interruptible(&dev->ioq);       /* whoever needs IO */
 951
 952 return_with_timer:
 953         DEBUGP(7, dev, "<- monitor_card (returns with timer)\n");
 954         dev->timer.expires = jiffies + dev->mdelay;
 955         add_timer(&dev->timer);
 956         clear_bit(LOCK_MONITOR, &dev->flags);
 957 }
 958
 959 /* Interface to userland (file_operations) */
 960
 961 static ssize_t cmm_read(struct file *filp, __user char *buf, size_t count,
 962                         loff_t *ppos)
 963 {
 964         struct cm4000_dev *dev = filp->private_data;
 965         ioaddr_t iobase = dev->link.io.BasePort1;
 966         ssize_t rc;
 967         int i, j, k;
 968
 969         DEBUGP(2, dev, "-> cmm_read(%s,%d)\n", current->comm, current->pid);
 970
 971         if (count == 0)         /* according to manpage */
 972                 return 0;
 973
 974         if ((dev->link.state & DEV_PRESENT) == 0 ||     /* socket removed */
 975             test_bit(IS_CMM_ABSENT, &dev->flags))
 976                 return -ENODEV;
 977
 978         if (test_bit(IS_BAD_CSUM, &dev->flags))
 979                 return -EIO;
 980
 981         /* also see the note about this in cmm_write */
 982         if (wait_event_interruptible
 983             (dev->atrq,
 984              ((filp->f_flags & O_NONBLOCK)
 985               || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags) != 0)))) {
 986                 if (filp->f_flags & O_NONBLOCK)
 987                         return -EAGAIN;
 988                 return -ERESTARTSYS;
 989         }
 990
 991         if (test_bit(IS_ATR_VALID, &dev->flags) == 0)
 992                 return -EIO;
 993
 994         /* this one implements blocking IO */
 995         if (wait_event_interruptible
 996             (dev->readq,
 997              ((filp->f_flags & O_NONBLOCK) || (dev->rpos < dev->rlen)))) {
 998                 if (filp->f_flags & O_NONBLOCK)
 999                         return -EAGAIN;
1000                 return -ERESTARTSYS;
1001         }
1002
1003         /* lock io */
1004         if (wait_event_interruptible
1005             (dev->ioq,
1006              ((filp->f_flags & O_NONBLOCK)
1007               || (test_and_set_bit(LOCK_IO, (void *)&dev->flags) == 0)))) {
1008                 if (filp->f_flags & O_NONBLOCK)
1009                         return -EAGAIN;
1010                 return -ERESTARTSYS;
1011         }
1012
1013         rc = 0;
1014         dev->flags0 = inb(REG_FLAGS0(iobase));
1015         if ((dev->flags0 & 1) == 0      /* no smartcard inserted */
1016             || dev->flags0 == 0xff) {   /* no cardman inserted */
1017                 clear_bit(IS_ATR_VALID, &dev->flags);
1018                 if (dev->flags0 & 1) {
1019                         set_bit(IS_CMM_ABSENT, &dev->flags);
1020                         rc = -ENODEV;
1021                 }
1022                 rc = -EIO;
1023                 goto release_io;
1024         }
1025
1026         DEBUGP(4, dev, "begin read answer\n");
1027         j = min(count, (size_t)(dev->rlen - dev->rpos));
1028         k = dev->rpos;
1029         if (k + j > 255)
1030                 j = 256 - k;
1031         DEBUGP(4, dev, "read1 j=%d\n", j);
1032         for (i = 0; i < j; i++) {
1033                 xoutb(k++, REG_BUF_ADDR(iobase));
1034                 dev->rbuf[i] = xinb(REG_BUF_DATA(iobase));
1035         }
1036         j = min(count, (size_t)(dev->rlen - dev->rpos));
1037         if (k + j > 255) {
1038                 DEBUGP(4, dev, "read2 j=%d\n", j);
1039                 dev->flags1 |= 0x10;    /* MSB buf addr set */
1040                 xoutb(dev->flags1, REG_FLAGS1(iobase));
1041                 for (; i < j; i++) {
1042                         xoutb(k++, REG_BUF_ADDR(iobase));
1043                         dev->rbuf[i] = xinb(REG_BUF_DATA(iobase));
1044                 }
1045         }
1046
1047         if (dev->proto == 0 && count > dev->rlen - dev->rpos) {
1048                 DEBUGP(4, dev, "T=0 and count > buffer\n");
1049                 dev->rbuf[i] = dev->rbuf[i - 1];
1050                 dev->rbuf[i - 1] = dev->procbyte;
1051                 j++;
1052         }
1053         count = j;
1054
1055         dev->rpos = dev->rlen + 1;
1056
1057         /* Clear T1Active */
1058         DEBUGP(4, dev, "Clear T1Active\n");
1059         dev->flags1 &= 0xdf;
1060         xoutb(dev->flags1, REG_FLAGS1(iobase));
1061
1062         xoutb(0, REG_FLAGS1(iobase));   /* clear detectCMM */
1063         /* last check before exit */
1064         if (!io_detect_cm4000(iobase, dev))
1065                 count = -ENODEV;
1066
1067         if (test_bit(IS_INVREV, &dev->flags) && count > 0)
1068                 str_invert_revert(dev->rbuf, count);
1069
1070         if (copy_to_user(buf, dev->rbuf, count))
1071                 return -EFAULT;
1072
1073 release_io:
1074         clear_bit(LOCK_IO, &dev->flags);
1075         wake_up_interruptible(&dev->ioq);
1076
1077         DEBUGP(2, dev, "<- cmm_read returns: rc = %Zi\n",
1078                (rc < 0 ? rc : count));
1079         return rc < 0 ? rc : count;
1080 }
1081
1082 static ssize_t cmm_write(struct file *filp, const char __user *buf,
1083                          size_t count, loff_t *ppos)
1084 {
1085         struct cm4000_dev *dev = (struct cm4000_dev *) filp->private_data;
1086         ioaddr_t iobase = dev->link.io.BasePort1;
1087         unsigned short s;
1088         unsigned char tmp;
1089         unsigned char infolen;
1090         unsigned char sendT0;
1091         unsigned short nsend;
1092         unsigned short nr;
1093         ssize_t rc;
1094         int i;
1095
1096         DEBUGP(2, dev, "-> cmm_write(%s,%d)\n", current->comm, current->pid);
1097
1098         if (count == 0)         /* according to manpage */
1099                 return 0;
1100
1101         if (dev->proto == 0 && count < 4) {
1102                 /* T0 must have at least 4 bytes */
1103                 DEBUGP(4, dev, "T0 short write\n");
1104                 return -EIO;
1105         }
1106
1107         nr = count & 0x1ff;     /* max bytes to write */
1108
1109         sendT0 = dev->proto ? 0 : nr > 5 ? 0x08 : 0;
1110
1111         if ((dev->link.state & DEV_PRESENT) == 0 ||     /* socket removed */
1112             test_bit(IS_CMM_ABSENT, &dev->flags))
1113                 return -ENODEV;
1114
1115         if (test_bit(IS_BAD_CSUM, &dev->flags)) {
1116                 DEBUGP(4, dev, "bad csum\n");
1117                 return -EIO;
1118         }
1119
1120         /*
1121          * wait for atr to become valid.
1122          * note: it is important to lock this code. if we dont, the monitor
1123          * could be run between test_bit and the the call the sleep on the
1124          * atr-queue.  if *then* the monitor detects atr valid, it will wake up
1125          * any process on the atr-queue, *but* since we have been interrupted,
1126          * we do not yet sleep on this queue. this would result in a missed
1127          * wake_up and the calling process would sleep forever (until
1128          * interrupted).  also, do *not* restore_flags before sleep_on, because
1129          * this could result in the same situation!
1130          */
1131         if (wait_event_interruptible
1132             (dev->atrq,
1133              ((filp->f_flags & O_NONBLOCK)
1134               || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags) != 0)))) {
1135                 if (filp->f_flags & O_NONBLOCK)
1136                         return -EAGAIN;
1137                 return -ERESTARTSYS;
1138         }
1139
1140         if (test_bit(IS_ATR_VALID, &dev->flags) == 0) { /* invalid atr */
1141                 DEBUGP(4, dev, "invalid ATR\n");
1142                 return -EIO;
1143         }
1144
1145         /* lock io */
1146         if (wait_event_interruptible
1147             (dev->ioq,
1148              ((filp->f_flags & O_NONBLOCK)
1149               || (test_and_set_bit(LOCK_IO, (void *)&dev->flags) == 0)))) {
1150                 if (filp->f_flags & O_NONBLOCK)
1151                         return -EAGAIN;
1152                 return -ERESTARTSYS;
1153         }
1154
1155         if (copy_from_user(dev->sbuf, buf, ((count > 512) ? 512 : count)))
1156                 return -EFAULT;
1157
1158         rc = 0;
1159         dev->flags0 = inb(REG_FLAGS0(iobase));
1160         if ((dev->flags0 & 1) == 0      /* no smartcard inserted */
1161             || dev->flags0 == 0xff) {   /* no cardman inserted */
1162                 clear_bit(IS_ATR_VALID, &dev->flags);
1163                 if (dev->flags0 & 1) {
1164                         set_bit(IS_CMM_ABSENT, &dev->flags);
1165                         rc = -ENODEV;
1166                 } else {
1167                         DEBUGP(4, dev, "IO error\n");
1168                         rc = -EIO;
1169                 }
1170                 goto release_io;
1171         }
1172
1173         xoutb(0x80, REG_FLAGS0(iobase));        /* reset SM  */
1174
1175         if (!io_detect_cm4000(iobase, dev)) {
1176                 rc = -ENODEV;
1177                 goto release_io;
1178         }
1179
1180         /* reflect T=0 send/read mode in flags1 */
1181         dev->flags1 |= (sendT0);
1182
1183         set_cardparameter(dev);
1184
1185         /* dummy read, reset flag procedure received */
1186         tmp = inb(REG_FLAGS1(iobase));
1187
1188         dev->flags1 = 0x20      /* T_Active */
1189             | (sendT0)
1190             | (test_bit(IS_INVREV, &dev->flags) ? 2 : 0)/* inverse parity  */
1191             | (((dev->baudv - 1) & 0x0100) >> 8);       /* MSB-Baud */
1192         DEBUGP(1, dev, "set dev->flags1 = 0x%.2x\n", dev->flags1);
1193         xoutb(dev->flags1, REG_FLAGS1(iobase));
1194
1195         /* xmit data */
1196         DEBUGP(4, dev, "Xmit data\n");
1197         for (i = 0; i < nr; i++) {
1198                 if (i >= 256) {
1199                         dev->flags1 = 0x20      /* T_Active */
1200                             | (sendT0)  /* SendT0 */
1201                                 /* inverse parity: */
1202                             | (test_bit(IS_INVREV, &dev->flags) ? 2 : 0)
1203                             | (((dev->baudv - 1) & 0x0100) >> 8) /* MSB-Baud */
1204                             | 0x10;     /* set address high */
1205                         DEBUGP(4, dev, "dev->flags = 0x%.2x - set address "
1206                                "high\n", dev->flags1);
1207                         xoutb(dev->flags1, REG_FLAGS1(iobase));
1208                 }
1209                 if (test_bit(IS_INVREV, &dev->flags)) {
1210                         DEBUGP(4, dev, "Apply inverse convention for 0x%.2x "
1211                                 "-> 0x%.2x\n", (unsigned char)dev->sbuf[i],
1212                               invert_revert(dev->sbuf[i]));
1213                         xoutb(i, REG_BUF_ADDR(iobase));
1214                         xoutb(invert_revert(dev->sbuf[i]),
1215                               REG_BUF_DATA(iobase));
1216                 } else {
1217                         xoutb(i, REG_BUF_ADDR(iobase));
1218                         xoutb(dev->sbuf[i], REG_BUF_DATA(iobase));
1219                 }
1220         }
1221         DEBUGP(4, dev, "Xmit done\n");
1222
1223         if (dev->proto == 0) {
1224                 /* T=0 proto: 0 byte reply  */
1225                 if (nr == 4) {
1226                         DEBUGP(4, dev, "T=0 assumes 0 byte reply\n");
1227                         xoutb(i, REG_BUF_ADDR(iobase));
1228                         if (test_bit(IS_INVREV, &dev->flags))
1229                                 xoutb(0xff, REG_BUF_DATA(iobase));
1230                         else
1231                                 xoutb(0x00, REG_BUF_DATA(iobase));
1232                 }
1233
1234                 /* numSendBytes */
1235                 if (sendT0)
1236                         nsend = nr;
1237                 else {
1238                         if (nr == 4)
1239                                 nsend = 5;
1240                         else {
1241                                 nsend = 5 + (unsigned char)dev->sbuf[4];
1242                                 if (dev->sbuf[4] == 0)
1243                                         nsend += 0x100;
1244                         }
1245                 }
1246         } else
1247                 nsend = nr;
1248
1249         /* T0: output procedure byte */
1250         if (test_bit(IS_INVREV, &dev->flags)) {
1251                 DEBUGP(4, dev, "T=0 set Procedure byte (inverse-reverse) "
1252                        "0x%.2x\n", invert_revert(dev->sbuf[1]));
1253                 xoutb(invert_revert(dev->sbuf[1]), REG_NUM_BYTES(iobase));
1254         } else {
1255                 DEBUGP(4, dev, "T=0 set Procedure byte 0x%.2x\n", dev->sbuf[1]);
1256                 xoutb(dev->sbuf[1], REG_NUM_BYTES(iobase));
1257         }
1258
1259         DEBUGP(1, dev, "set NumSendBytes = 0x%.2x\n",
1260                (unsigned char)(nsend & 0xff));
1261         xoutb((unsigned char)(nsend & 0xff), REG_NUM_SEND(iobase));
1262
1263         DEBUGP(1, dev, "Trigger CARDMAN CONTROLLER (0x%.2x)\n",
1264                0x40     /* SM_Active */
1265               | (dev->flags0 & 2 ? 0 : 4)       /* power on if needed */
1266               |(dev->proto ? 0x10 : 0x08)       /* T=1/T=0 */
1267               |(nsend & 0x100) >> 8 /* MSB numSendBytes */ );
1268         xoutb(0x40              /* SM_Active */
1269               | (dev->flags0 & 2 ? 0 : 4)       /* power on if needed */
1270               |(dev->proto ? 0x10 : 0x08)       /* T=1/T=0 */
1271               |(nsend & 0x100) >> 8,    /* MSB numSendBytes */
1272               REG_FLAGS0(iobase));
1273
1274         /* wait for xmit done */
1275         if (dev->proto == 1) {
1276                 DEBUGP(4, dev, "Wait for xmit done\n");
1277                 for (i = 0; i < 1000; i++) {
1278                         if (inb(REG_FLAGS0(iobase)) & 0x08)
1279                                 break;
1280                         msleep_interruptible(10);
1281                 }
1282                 if (i == 1000) {
1283                         DEBUGP(4, dev, "timeout waiting for xmit done\n");
1284                         rc = -EIO;
1285                         goto release_io;
1286                 }
1287         }
1288
1289         /* T=1: wait for infoLen */
1290
1291         infolen = 0;
1292         if (dev->proto) {
1293                 /* wait until infoLen is valid */
1294                 for (i = 0; i < 6000; i++) {    /* max waiting time of 1 min */
1295                         io_read_num_rec_bytes(iobase, &s);
1296                         if (s >= 3) {
1297                                 infolen = inb(REG_FLAGS1(iobase));
1298                                 DEBUGP(4, dev, "infolen=%d\n", infolen);
1299                                 break;
1300                         }
1301                         msleep_interruptible(10);
1302                 }
1303                 if (i == 6000) {
1304                         DEBUGP(4, dev, "timeout waiting for infoLen\n");
1305                         rc = -EIO;
1306                         goto release_io;
1307                 }
1308         } else
1309                 clear_bit(IS_PROCBYTE_PRESENT, &dev->flags);
1310
1311         /* numRecBytes | bit9 of numRecytes */
1312         io_read_num_rec_bytes(iobase, &dev->rlen);
1313         for (i = 0; i < 600; i++) {     /* max waiting time of 2 sec */
1314                 if (dev->proto) {
1315                         if (dev->rlen >= infolen + 4)
1316                                 break;
1317                 }
1318                 msleep_interruptible(10);
1319                 /* numRecBytes | bit9 of numRecytes */
1320                 io_read_num_rec_bytes(iobase, &s);
1321                 if (s > dev->rlen) {
1322                         DEBUGP(1, dev, "NumRecBytes inc (reset timeout)\n");
1323                         i = 0;  /* reset timeout */
1324                         dev->rlen = s;
1325                 }
1326                 /* T=0: we are done when numRecBytes doesn't
1327                  *      increment any more and NoProcedureByte
1328                  *      is set and numRecBytes == bytes sent + 6
1329                  *      (header bytes + data + 1 for sw2)
1330                  *      except when the card replies an error
1331                  *      which means, no data will be sent back.
1332                  */
1333                 else if (dev->proto == 0) {
1334                         if ((inb(REG_BUF_ADDR(iobase)) & 0x80)) {
1335                                 /* no procedure byte received since last read */
1336                                 DEBUGP(1, dev, "NoProcedure byte set\n");
1337                                 /* i=0; */
1338                         } else {
1339                                 /* procedure byte received since last read */
1340                                 DEBUGP(1, dev, "NoProcedure byte unset "
1341                                         "(reset timeout)\n");
1342                                 dev->procbyte = inb(REG_FLAGS1(iobase));
1343                                 DEBUGP(1, dev, "Read procedure byte 0x%.2x\n",
1344                                       dev->procbyte);
1345                                 i = 0;  /* resettimeout */
1346                         }
1347                         if (inb(REG_FLAGS0(iobase)) & 0x08) {
1348                                 DEBUGP(1, dev, "T0Done flag (read reply)\n");
1349                                 break;
1350                         }
1351                 }
1352                 if (dev->proto)
1353                         infolen = inb(REG_FLAGS1(iobase));
1354         }
1355         if (i == 600) {
1356                 DEBUGP(1, dev, "timeout waiting for numRecBytes\n");
1357                 rc = -EIO;
1358                 goto release_io;
1359         } else {
1360                 if (dev->proto == 0) {
1361                         DEBUGP(1, dev, "Wait for T0Done bit to be  set\n");
1362                         for (i = 0; i < 1000; i++) {
1363                                 if (inb(REG_FLAGS0(iobase)) & 0x08)
1364                                         break;
1365                                 msleep_interruptible(10);
1366                         }
1367                         if (i == 1000) {
1368                                 DEBUGP(1, dev, "timeout waiting for T0Done\n");
1369                                 rc = -EIO;
1370                                 goto release_io;
1371                         }
1372
1373                         dev->procbyte = inb(REG_FLAGS1(iobase));
1374                         DEBUGP(4, dev, "Read procedure byte 0x%.2x\n",
1375                               dev->procbyte);
1376
1377                         io_read_num_rec_bytes(iobase, &dev->rlen);
1378                         DEBUGP(4, dev, "Read NumRecBytes = %i\n", dev->rlen);
1379
1380                 }
1381         }
1382         /* T=1: read offset=zero, T=0: read offset=after challenge */
1383         dev->rpos = dev->proto ? 0 : nr == 4 ? 5 : nr > dev->rlen ? 5 : nr;
1384         DEBUGP(4, dev, "dev->rlen = %i,  dev->rpos = %i, nr = %i\n",
1385               dev->rlen, dev->rpos, nr);
1386
1387 release_io:
1388         DEBUGP(4, dev, "Reset SM\n");
1389         xoutb(0x80, REG_FLAGS0(iobase));        /* reset SM */
1390
1391         if (rc < 0) {
1392                 DEBUGP(4, dev, "Write failed but clear T_Active\n");
1393                 dev->flags1 &= 0xdf;
1394                 xoutb(dev->flags1, REG_FLAGS1(iobase));
1395         }
1396
1397         clear_bit(LOCK_IO, &dev->flags);
1398         wake_up_interruptible(&dev->ioq);
1399         wake_up_interruptible(&dev->readq);     /* tell read we have data */
1400
1401         /* ITSEC E2: clear write buffer */
1402         memset((char *)dev->sbuf, 0, 512);
1403
1404         /* return error or actually written bytes */
1405         DEBUGP(2, dev, "<- cmm_write\n");
1406         return rc < 0 ? rc : nr;
1407 }
1408
1409 static void start_monitor(struct cm4000_dev *dev)
1410 {
1411         DEBUGP(3, dev, "-> start_monitor\n");
1412         if (!dev->monitor_running) {
1413                 DEBUGP(5, dev, "create, init and add timer\n");
1414                 init_timer(&dev->timer);
1415                 dev->monitor_running = 1;
1416                 dev->timer.expires = jiffies;
1417                 dev->timer.data = (unsigned long) dev;
1418                 dev->timer.function = monitor_card;
1419                 add_timer(&dev->timer);
1420         } else
1421                 DEBUGP(5, dev, "monitor already running\n");
1422         DEBUGP(3, dev, "<- start_monitor\n");
1423 }
1424
1425 static void stop_monitor(struct cm4000_dev *dev)
1426 {
1427         DEBUGP(3, dev, "-> stop_monitor\n");
1428         if (dev->monitor_running) {
1429                 DEBUGP(5, dev, "stopping monitor\n");
1430                 terminate_monitor(dev);
1431                 /* reset monitor SM */
1432                 clear_bit(IS_ATR_VALID, &dev->flags);
1433                 clear_bit(IS_ATR_PRESENT, &dev->flags);
1434         } else
1435                 DEBUGP(5, dev, "monitor already stopped\n");
1436         DEBUGP(3, dev, "<- stop_monitor\n");
1437 }
1438
1439 static int cmm_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
1440                      unsigned long arg)
1441 {
1442         struct cm4000_dev *dev = filp->private_data;
1443         ioaddr_t iobase = dev->link.io.BasePort1;
1444         dev_link_t *link;
1445         int size;
1446         int rc;
1447 #ifdef PCMCIA_DEBUG
1448         char *ioctl_names[CM_IOC_MAXNR + 1] = {
1449                 [_IOC_NR(CM_IOCGSTATUS)] "CM_IOCGSTATUS",
1450                 [_IOC_NR(CM_IOCGATR)] "CM_IOCGATR",
1451                 [_IOC_NR(CM_IOCARDOFF)] "CM_IOCARDOFF",
1452                 [_IOC_NR(CM_IOCSPTS)] "CM_IOCSPTS",
1453                 [_IOC_NR(CM_IOSDBGLVL)] "CM4000_DBGLVL",
1454         };
1455 #endif
1456         DEBUGP(3, dev, "cmm_ioctl(device=%d.%d) %s\n", imajor(inode),
1457                iminor(inode), ioctl_names[_IOC_NR(cmd)]);
1458
1459         link = dev_table[iminor(inode)];
1460         if (!(DEV_OK(link))) {
1461                 DEBUGP(4, dev, "DEV_OK false\n");
1462                 return -ENODEV;
1463         }
1464
1465         if (test_bit(IS_CMM_ABSENT, &dev->flags)) {
1466                 DEBUGP(4, dev, "CMM_ABSENT flag set\n");
1467                 return -ENODEV;
1468         }
1469
1470         if (_IOC_TYPE(cmd) != CM_IOC_MAGIC) {
1471                 DEBUGP(4, dev, "ioctype mismatch\n");
1472                 return -EINVAL;
1473         }
1474         if (_IOC_NR(cmd) > CM_IOC_MAXNR) {
1475                 DEBUGP(4, dev, "iocnr mismatch\n");
1476                 return -EINVAL;
1477         }
1478         size = _IOC_SIZE(cmd);
1479         rc = 0;
1480         DEBUGP(4, dev, "iocdir=%.4x iocr=%.4x iocw=%.4x iocsize=%d cmd=%.4x\n",
1481               _IOC_DIR(cmd), _IOC_READ, _IOC_WRITE, size, cmd);
1482
1483         if (_IOC_DIR(cmd) & _IOC_READ) {
1484                 if (!access_ok(VERIFY_WRITE, (void *)arg, size))
1485                         return -EFAULT;
1486         }
1487         if (_IOC_DIR(cmd) & _IOC_WRITE) {
1488                 if (!access_ok(VERIFY_READ, (void *)arg, size))
1489                         return -EFAULT;
1490         }
1491
1492         switch (cmd) {
1493         case CM_IOCGSTATUS:
1494                 DEBUGP(4, dev, " ... in CM_IOCGSTATUS\n");
1495                 {
1496                         int status;
1497
1498                         /* clear other bits, but leave inserted & powered as
1499                          * they are */
1500                         status = dev->flags0 & 3;
1501                         if (test_bit(IS_ATR_PRESENT, &dev->flags))
1502                                 status |= CM_ATR_PRESENT;
1503                         if (test_bit(IS_ATR_VALID, &dev->flags))
1504                                 status |= CM_ATR_VALID;
1505                         if (test_bit(IS_CMM_ABSENT, &dev->flags))
1506                                 status |= CM_NO_READER;
1507                         if (test_bit(IS_BAD_CARD, &dev->flags))
1508                                 status |= CM_BAD_CARD;
1509                         if (copy_to_user((int *)arg, &status, sizeof(int)))
1510                                 return -EFAULT;
1511                 }
1512                 return 0;
1513         case CM_IOCGATR:
1514                 DEBUGP(4, dev, "... in CM_IOCGATR\n");
1515                 {
1516                         struct atreq *atreq = (struct atreq *) arg;
1517                         int tmp;
1518                         /* allow nonblocking io and being interrupted */
1519                         if (wait_event_interruptible
1520                             (dev->atrq,
1521                              ((filp->f_flags & O_NONBLOCK)
1522                               || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags)
1523                                   != 0)))) {
1524                                 if (filp->f_flags & O_NONBLOCK)
1525                                         return -EAGAIN;
1526                                 return -ERESTARTSYS;
1527                         }
1528
1529                         if (test_bit(IS_ATR_VALID, &dev->flags) == 0) {
1530                                 tmp = -1;
1531                                 if (copy_to_user(&(atreq->atr_len), &tmp,
1532                                                  sizeof(int)))
1533                                         return -EFAULT;
1534                         } else {
1535                                 if (copy_to_user(atreq->atr, dev->atr,
1536                                                  dev->atr_len))
1537                                         return -EFAULT;
1538
1539                                 tmp = dev->atr_len;
1540                                 if (copy_to_user(&(atreq->atr_len), &tmp, sizeof(int)))
1541                                         return -EFAULT;
1542                         }
1543                         return 0;
1544                 }
1545         case CM_IOCARDOFF:
1546
1547 #ifdef PCMCIA_DEBUG
1548                 DEBUGP(4, dev, "... in CM_IOCARDOFF\n");
1549                 if (dev->flags0 & 0x01) {
1550                         DEBUGP(4, dev, "    Card inserted\n");
1551                 } else {
1552                         DEBUGP(2, dev, "    No card inserted\n");
1553                 }
1554                 if (dev->flags0 & 0x02) {
1555                         DEBUGP(4, dev, "    Card powered\n");
1556                 } else {
1557                         DEBUGP(2, dev, "    Card not powered\n");
1558                 }
1559 #endif
1560
1561                 /* is a card inserted and powered? */
1562                 if ((dev->flags0 & 0x01) && (dev->flags0 & 0x02)) {
1563
1564                         /* get IO lock */
1565                         if (wait_event_interruptible
1566                             (dev->ioq,
1567                              ((filp->f_flags & O_NONBLOCK)
1568                               || (test_and_set_bit(LOCK_IO, (void *)&dev->flags)
1569                                   == 0)))) {
1570                                 if (filp->f_flags & O_NONBLOCK)
1571                                         return -EAGAIN;
1572                                 return -ERESTARTSYS;
1573                         }
1574                         /* Set Flags0 = 0x42 */
1575                         DEBUGP(4, dev, "Set Flags0=0x42 \n");
1576                         xoutb(0x42, REG_FLAGS0(iobase));
1577                         clear_bit(IS_ATR_PRESENT, &dev->flags);
1578                         clear_bit(IS_ATR_VALID, &dev->flags);
1579                         dev->mstate = M_CARDOFF;
1580                         clear_bit(LOCK_IO, &dev->flags);
1581                         if (wait_event_interruptible
1582                             (dev->atrq,
1583                              ((filp->f_flags & O_NONBLOCK)
1584                               || (test_bit(IS_ATR_VALID, (void *)&dev->flags) !=
1585                                   0)))) {
1586                                 if (filp->f_flags & O_NONBLOCK)
1587                                         return -EAGAIN;
1588                                 return -ERESTARTSYS;
1589                         }
1590                 }
1591                 /* release lock */
1592                 clear_bit(LOCK_IO, &dev->flags);
1593                 wake_up_interruptible(&dev->ioq);
1594
1595                 return 0;
1596         case CM_IOCSPTS:
1597                 {
1598                         struct ptsreq krnptsreq;
1599
1600                         if (copy_from_user(&krnptsreq, (struct ptsreq *) arg,
1601                                            sizeof(struct ptsreq)))
1602                                 return -EFAULT;
1603
1604                         rc = 0;
1605                         DEBUGP(4, dev, "... in CM_IOCSPTS\n");
1606                         /* wait for ATR to get valid */
1607                         if (wait_event_interruptible
1608                             (dev->atrq,
1609                              ((filp->f_flags & O_NONBLOCK)
1610                               || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags)
1611                                   != 0)))) {
1612                                 if (filp->f_flags & O_NONBLOCK)
1613                                         return -EAGAIN;
1614                                 return -ERESTARTSYS;
1615                         }
1616                         /* get IO lock */
1617                         if (wait_event_interruptible
1618                             (dev->ioq,
1619                              ((filp->f_flags & O_NONBLOCK)
1620                               || (test_and_set_bit(LOCK_IO, (void *)&dev->flags)
1621                                   == 0)))) {
1622                                 if (filp->f_flags & O_NONBLOCK)
1623                                         return -EAGAIN;
1624                                 return -ERESTARTSYS;
1625                         }
1626
1627                         if ((rc = set_protocol(dev, &krnptsreq)) != 0) {
1628                                 /* auto power_on again */
1629                                 dev->mstate = M_FETCH_ATR;
1630                                 clear_bit(IS_ATR_VALID, &dev->flags);
1631                         }
1632                         /* release lock */
1633                         clear_bit(LOCK_IO, &dev->flags);
1634                         wake_up_interruptible(&dev->ioq);
1635
1636                 }
1637                 return rc;
1638 #ifdef PCMCIA_DEBUG
1639         case CM_IOSDBGLVL:      /* set debug log level */
1640                 {
1641                         int old_pc_debug = 0;
1642
1643                         old_pc_debug = pc_debug;
1644                         if (copy_from_user(&pc_debug, (int *)arg, sizeof(int)))
1645                                 return -EFAULT;
1646
1647                         if (old_pc_debug != pc_debug)
1648                                 DEBUGP(0, dev, "Changed debug log level "
1649                                        "to %i\n", pc_debug);
1650                 }
1651                 return rc;
1652 #endif
1653         default:
1654                 DEBUGP(4, dev, "... in default (unknown IOCTL code)\n");
1655                 return -EINVAL;
1656         }
1657 }
1658
1659 static int cmm_open(struct inode *inode, struct file *filp)
1660 {
1661         struct cm4000_dev *dev;
1662         dev_link_t *link;
1663         int rc, minor = iminor(inode);
1664
1665         if (minor >= CM4000_MAX_DEV)
1666                 return -ENODEV;
1667
1668         link = dev_table[minor];
1669         if (link == NULL || !(DEV_OK(link)))
1670                 return -ENODEV;
1671
1672         if (link->open)
1673                 return -EBUSY;
1674
1675         dev = link->priv;
1676         filp->private_data = dev;
1677
1678         DEBUGP(2, dev, "-> cmm_open(device=%d.%d process=%s,%d)\n",
1679               imajor(inode), minor, current->comm, current->pid);
1680
1681         /* init device variables, they may be "polluted" after close
1682          * or, the device may never have been closed (i.e. open failed)
1683          */
1684
1685         ZERO_DEV(dev);
1686
1687         /* opening will always block since the
1688          * monitor will be started by open, which
1689          * means we have to wait for ATR becoming
1690          * vaild = block until valid (or card
1691          * inserted)
1692          */
1693         if (filp->f_flags & O_NONBLOCK)
1694                 return -EAGAIN;
1695
1696         dev->mdelay = T_50MSEC;
1697
1698         /* start monitoring the cardstatus */
1699         start_monitor(dev);
1700
1701         link->open = 1;         /* only one open per device */
1702         rc = 0;
1703
1704         DEBUGP(2, dev, "<- cmm_open\n");
1705         return nonseekable_open(inode, filp);
1706 }
1707
1708 static int cmm_close(struct inode *inode, struct file *filp)
1709 {
1710         struct cm4000_dev *dev;
1711         dev_link_t *link;
1712         int minor = iminor(inode);
1713
1714         if (minor >= CM4000_MAX_DEV)
1715                 return -ENODEV;
1716
1717         link = dev_table[minor];
1718         if (link == NULL)
1719                 return -ENODEV;
1720
1721         dev = link->priv;
1722
1723         DEBUGP(2, dev, "-> cmm_close(maj/min=%d.%d)\n",
1724                imajor(inode), minor);
1725
1726         stop_monitor(dev);
1727
1728         ZERO_DEV(dev);
1729
1730         link->open = 0;         /* only one open per device */
1731         wake_up(&dev->devq);    /* socket removed? */
1732
1733         DEBUGP(2, dev, "cmm_close\n");
1734         return 0;
1735 }
1736
1737 static void cmm_cm4000_release(dev_link_t * link)
1738 {
1739         struct cm4000_dev *dev = link->priv;
1740
1741         /* dont terminate the monitor, rather rely on
1742          * close doing that for us.
1743          */
1744         DEBUGP(3, dev, "-> cmm_cm4000_release\n");
1745         while (link->open) {
1746                 printk(KERN_INFO MODULE_NAME ": delaying release until "
1747                        "process has terminated\n");
1748                 /* note: don't interrupt us:
1749                  * close the applications which own
1750                  * the devices _first_ !
1751                  */
1752                 wait_event(dev->devq, (link->open == 0));
1753         }
1754         /* dev->devq=NULL;      this cannot be zeroed earlier */
1755         DEBUGP(3, dev, "<- cmm_cm4000_release\n");
1756         return;
1757 }
1758
1759 /*==== Interface to PCMCIA Layer =======================================*/
1760
1761 static void cm4000_config(dev_link_t * link, int devno)
1762 {
1763         client_handle_t handle = link->handle;
1764         struct cm4000_dev *dev;
1765         tuple_t tuple;
1766         cisparse_t parse;
1767         config_info_t conf;
1768         u_char buf[64];
1769         int fail_fn, fail_rc;
1770         int rc;
1771
1772         /* read the config-tuples */
1773         tuple.DesiredTuple = CISTPL_CONFIG;
1774         tuple.Attributes = 0;
1775         tuple.TupleData = buf;
1776         tuple.TupleDataMax = sizeof(buf);
1777         tuple.TupleOffset = 0;
1778
1779         if ((fail_rc = pcmcia_get_first_tuple(handle, &tuple)) != CS_SUCCESS) {
1780                 fail_fn = GetFirstTuple;
1781                 goto cs_failed;
1782         }
1783         if ((fail_rc = pcmcia_get_tuple_data(handle, &tuple)) != CS_SUCCESS) {
1784                 fail_fn = GetTupleData;
1785                 goto cs_failed;
1786         }
1787         if ((fail_rc =
1788              pcmcia_parse_tuple(handle, &tuple, &parse)) != CS_SUCCESS) {
1789                 fail_fn = ParseTuple;
1790                 goto cs_failed;
1791         }
1792         if ((fail_rc =
1793              pcmcia_get_configuration_info(handle, &conf)) != CS_SUCCESS) {
1794                 fail_fn = GetConfigurationInfo;
1795                 goto cs_failed;
1796         }
1797
1798         link->state |= DEV_CONFIG;
1799         link->conf.ConfigBase = parse.config.base;
1800         link->conf.Present = parse.config.rmask[0];
1801         link->conf.Vcc = conf.Vcc;
1802
1803         link->io.BasePort2 = 0;
1804         link->io.NumPorts2 = 0;
1805         link->io.Attributes2 = 0;
1806         tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
1807         for (rc = pcmcia_get_first_tuple(handle, &tuple);
1808              rc == CS_SUCCESS; rc = pcmcia_get_next_tuple(handle, &tuple)) {
1809
1810                 rc = pcmcia_get_tuple_data(handle, &tuple);
1811                 if (rc != CS_SUCCESS)
1812                         continue;
1813                 rc = pcmcia_parse_tuple(handle, &tuple, &parse);
1814                 if (rc != CS_SUCCESS)
1815                         continue;
1816
1817                 link->conf.ConfigIndex = parse.cftable_entry.index;
1818
1819                 if (!parse.cftable_entry.io.nwin)
1820                         continue;
1821
1822                 /* Get the IOaddr */
1823                 link->io.BasePort1 = parse.cftable_entry.io.win[0].base;
1824                 link->io.NumPorts1 = parse.cftable_entry.io.win[0].len;
1825                 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
1826                 if (!(parse.cftable_entry.io.flags & CISTPL_IO_8BIT))
1827                         link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
1828                 if (!(parse.cftable_entry.io.flags & CISTPL_IO_16BIT))
1829                         link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
1830                 link->io.IOAddrLines = parse.cftable_entry.io.flags
1831                     & CISTPL_IO_LINES_MASK;
1832
1833                 rc = pcmcia_request_io(handle, &link->io);
1834                 if (rc == CS_SUCCESS)
1835                         break;  /* we are done */
1836         }
1837         if (rc != CS_SUCCESS)
1838                 goto cs_release;
1839
1840         link->conf.IntType = 00000002;
1841
1842         if ((fail_rc =
1843              pcmcia_request_configuration(handle, &link->conf)) != CS_SUCCESS) {
1844                 fail_fn = RequestConfiguration;
1845                 goto cs_release;
1846         }
1847
1848         dev = link->priv;
1849         sprintf(dev->node.dev_name, DEVICE_NAME "%d", devno);
1850         dev->node.major = major;
1851         dev->node.minor = devno;
1852         dev->node.next = NULL;
1853         link->dev = &dev->node;
1854         link->state &= ~DEV_CONFIG_PENDING;
1855
1856         return;
1857
1858 cs_failed:
1859         cs_error(handle, fail_fn, fail_rc);
1860 cs_release:
1861         cm4000_release(link);
1862
1863         link->state &= ~DEV_CONFIG_PENDING;
1864 }
1865
1866 static int cm4000_event(event_t event, int priority,
1867                         event_callback_args_t *args)
1868 {
1869         dev_link_t *link;
1870         struct cm4000_dev *dev;
1871         int devno;
1872
1873         link = args->client_data;
1874         dev = link->priv;
1875
1876         DEBUGP(3, dev, "-> cm4000_event\n");
1877         for (devno = 0; devno < CM4000_MAX_DEV; devno++)
1878                 if (dev_table[devno] == link)
1879                         break;
1880
1881         if (devno == CM4000_MAX_DEV)
1882                 return CS_BAD_ADAPTER;
1883
1884         switch (event) {
1885         case CS_EVENT_CARD_INSERTION:
1886                 DEBUGP(5, dev, "CS_EVENT_CARD_INSERTION\n");
1887                 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
1888                 cm4000_config(link, devno);
1889                 break;
1890         case CS_EVENT_CARD_REMOVAL:
1891                 DEBUGP(5, dev, "CS_EVENT_CARD_REMOVAL\n");
1892                 link->state &= ~DEV_PRESENT;
1893                 stop_monitor(dev);
1894                 break;
1895         case CS_EVENT_PM_SUSPEND:
1896                 DEBUGP(5, dev, "CS_EVENT_PM_SUSPEND "
1897                       "(fall-through to CS_EVENT_RESET_PHYSICAL)\n");
1898                 link->state |= DEV_SUSPEND;
1899                 /* fall-through */
1900         case CS_EVENT_RESET_PHYSICAL:
1901                 DEBUGP(5, dev, "CS_EVENT_RESET_PHYSICAL\n");
1902                 if (link->state & DEV_CONFIG) {
1903                         DEBUGP(5, dev, "ReleaseConfiguration\n");
1904                         pcmcia_release_configuration(link->handle);
1905                 }
1906                 stop_monitor(dev);
1907                 break;
1908         case CS_EVENT_PM_RESUME:
1909                 DEBUGP(5, dev, "CS_EVENT_PM_RESUME "
1910                       "(fall-through to CS_EVENT_CARD_RESET)\n");
1911                 link->state &= ~DEV_SUSPEND;
1912                 /* fall-through */
1913         case CS_EVENT_CARD_RESET:
1914                 DEBUGP(5, dev, "CS_EVENT_CARD_RESET\n");
1915                 if ((link->state & DEV_CONFIG)) {
1916                         DEBUGP(5, dev, "RequestConfiguration\n");
1917                         pcmcia_request_configuration(link->handle, &link->conf);
1918                 }
1919                 if (link->open)
1920                         start_monitor(dev);
1921                 break;
1922         default:
1923                 DEBUGP(5, dev, "unknown event %.2x\n", event);
1924                 break;
1925         }
1926         DEBUGP(3, dev, "<- cm4000_event\n");
1927         return CS_SUCCESS;
1928 }
1929
1930 static void cm4000_release(dev_link_t *link)
1931 {
1932         cmm_cm4000_release(link->priv); /* delay release until device closed */
1933         pcmcia_release_configuration(link->handle);
1934         pcmcia_release_io(link->handle, &link->io);
1935 }
1936
1937 static dev_link_t *cm4000_attach(void)
1938 {
1939         struct cm4000_dev *dev;
1940         dev_link_t *link;
1941         client_reg_t client_reg;
1942         int i;
1943
1944         for (i = 0; i < CM4000_MAX_DEV; i++)
1945                 if (dev_table[i] == NULL)
1946                         break;
1947
1948         if (i == CM4000_MAX_DEV) {
1949                 printk(KERN_NOTICE MODULE_NAME ": all devices in use\n");
1950                 return NULL;
1951         }
1952
1953         /* create a new cm4000_cs device */
1954         dev = kzalloc(sizeof(struct cm4000_dev), GFP_KERNEL);
1955         if (dev == NULL)
1956                 return NULL;
1957
1958         link = &dev->link;
1959         link->priv = dev;
1960         link->conf.IntType = INT_MEMORY_AND_IO;
1961         dev_table[i] = link;
1962
1963         /* register with card services */
1964         client_reg.dev_info = &dev_info;
1965         client_reg.EventMask =
1966             CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
1967             CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
1968             CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
1969         client_reg.Version = 0x0210;
1970         client_reg.event_callback_args.client_data = link;
1971
1972         i = pcmcia_register_client(&link->handle, &client_reg);
1973         if (i) {
1974                 cs_error(link->handle, RegisterClient, i);
1975                 cm4000_detach(link);
1976                 return NULL;
1977         }
1978
1979         init_waitqueue_head(&dev->devq);
1980         init_waitqueue_head(&dev->ioq);
1981         init_waitqueue_head(&dev->atrq);
1982         init_waitqueue_head(&dev->readq);
1983
1984         return link;
1985 }
1986
1987 static void cm4000_detach_by_devno(int devno, dev_link_t * link)
1988 {
1989         struct cm4000_dev *dev = link->priv;
1990
1991         DEBUGP(3, dev, "-> detach_by_devno(devno=%d)\n", devno);
1992
1993         if (link->state & DEV_CONFIG) {
1994                 DEBUGP(5, dev, "device still configured (try to release it)\n");
1995                 cm4000_release(link);
1996         }
1997
1998         if (link->handle) {
1999                 pcmcia_deregister_client(link->handle);
2000         }
2001
2002         dev_table[devno] = NULL;
2003         kfree(dev);
2004         return;
2005 }
2006
2007 static void cm4000_detach(dev_link_t * link)
2008 {
2009         int i;
2010
2011         /* find device */
2012         for (i = 0; i < CM4000_MAX_DEV; i++)
2013                 if (dev_table[i] == link)
2014                         break;
2015
2016         if (i == CM4000_MAX_DEV)
2017                 return;
2018
2019         cm4000_detach_by_devno(i, link);
2020         return;
2021 }
2022
2023 static struct file_operations cm4000_fops = {
2024         .owner  = THIS_MODULE,
2025         .read   = cmm_read,
2026         .write  = cmm_write,
2027         .ioctl  = cmm_ioctl,
2028         .open   = cmm_open,
2029         .release= cmm_close,
2030 };
2031
2032 static struct pcmcia_device_id cm4000_ids[] = {
2033         PCMCIA_DEVICE_MANF_CARD(0x0223, 0x0002),
2034         PCMCIA_DEVICE_PROD_ID12("CardMan", "4000", 0x2FB368CA, 0xA2BD8C39),
2035         PCMCIA_DEVICE_NULL,
2036 };
2037 MODULE_DEVICE_TABLE(pcmcia, cm4000_ids);
2038
2039 static struct pcmcia_driver cm4000_driver = {
2040         .owner    = THIS_MODULE,
2041         .drv      = {
2042                 .name = "cm4000_cs",
2043                 },
2044         .attach   = cm4000_attach,
2045         .detach   = cm4000_detach,
2046         .event    = cm4000_event,
2047         .id_table = cm4000_ids,
2048 };
2049
2050 static int __init cmm_init(void)
2051 {
2052         printk(KERN_INFO "%s\n", version);
2053         pcmcia_register_driver(&cm4000_driver);
2054         major = register_chrdev(0, DEVICE_NAME, &cm4000_fops);
2055         if (major < 0) {
2056                 printk(KERN_WARNING MODULE_NAME
2057                         ": could not get major number\n");
2058                 return -1;
2059         }
2060
2061         return 0;
2062 }
2063
2064 static void __exit cmm_exit(void)
2065 {
2066         int i;
2067
2068         printk(KERN_INFO MODULE_NAME ": unloading\n");
2069         pcmcia_unregister_driver(&cm4000_driver);
2070         for (i = 0; i < CM4000_MAX_DEV; i++)
2071                 if (dev_table[i])
2072                         cm4000_detach_by_devno(i, dev_table[i]);
2073         unregister_chrdev(major, DEVICE_NAME);
2074 };
2075
2076 module_init(cmm_init);
2077 module_exit(cmm_exit);
2078 MODULE_LICENSE("Dual BSD/GPL");