err.no 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) 2005-2006 Harald Welte <laforge@gnumonks.org>
  17   *     - Adhere to Kernel CodingStyle
  18   *     - Port to 2.6.13 "new" style PCMCIA
  19   *     - Check for copy_{from,to}_user return values
  20   *     - Use nonseekable_open()
  21   *     - add class interface for udev device creation
  22   *
  23   * All rights reserved. Licensed under dual BSD/GPL license.
  24   */
  25
  26 /* #define PCMCIA_DEBUG 6 */
  27
  28 #include <linux/kernel.h>
  29 #include <linux/module.h>
  30 #include <linux/slab.h>
  31 #include <linux/init.h>
  32 #include <linux/fs.h>
  33 #include <linux/delay.h>
  34 #include <linux/bitrev.h>
  35 #include <asm/uaccess.h>
  36 #include <asm/io.h>
  37
  38 #include <pcmcia/cs_types.h>
  39 #include <pcmcia/cs.h>
  40 #include <pcmcia/cistpl.h>
  41 #include <pcmcia/cisreg.h>
  42 #include <pcmcia/ciscode.h>
  43 #include <pcmcia/ds.h>
  44
  45 #include <linux/cm4000_cs.h>
  46
  47 /* #define ATR_CSUM */
  48
  49 #ifdef PCMCIA_DEBUG
  50 #define reader_to_dev(x)        (&handle_to_dev(x->p_dev))
  51 static int pc_debug = PCMCIA_DEBUG;
  52 module_param(pc_debug, int, 0600);
  53 #define DEBUGP(n, rdr, x, args...) do {                                 \
  54         if (pc_debug >= (n))                                            \
  55                 dev_printk(KERN_DEBUG, reader_to_dev(rdr), "%s:" x,     \
  56                            __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(unsigned int iobase,
 312                                             unsigned short *s)
 313 {
 314         unsigned short tmp;
 315
 316         tmp = *s = 0;
 317         do {
 318                 *s = tmp;
 319                 tmp = inb(REG_NUM_BYTES(iobase)) |
 320                                 (inb(REG_FLAGS0(iobase)) & 4 ? 0x100 : 0);
 321         } while (tmp != *s);
 322
 323         return *s;
 324 }
 325
 326 static int parse_atr(struct cm4000_dev *dev)
 327 {
 328         unsigned char any_t1, any_t0;
 329         unsigned char ch, ifno;
 330         int ix, done;
 331
 332         DEBUGP(3, dev, "-> parse_atr: dev->atr_len = %i\n", dev->atr_len);
 333
 334         if (dev->atr_len < 3) {
 335                 DEBUGP(5, dev, "parse_atr: atr_len < 3\n");
 336                 return 0;
 337         }
 338
 339         if (dev->atr[0] == 0x3f)
 340                 set_bit(IS_INVREV, &dev->flags);
 341         else
 342                 clear_bit(IS_INVREV, &dev->flags);
 343         ix = 1;
 344         ifno = 1;
 345         ch = dev->atr[1];
 346         dev->proto = 0;         /* XXX PROTO */
 347         any_t1 = any_t0 = done = 0;
 348         dev->ta1 = 0x11;        /* defaults to 9600 baud */
 349         do {
 350                 if (ifno == 1 && (ch & 0x10)) {
 351                         /* read first interface byte and TA1 is present */
 352                         dev->ta1 = dev->atr[2];
 353                         DEBUGP(5, dev, "Card says FiDi is 0x%.2x\n", dev->ta1);
 354                         ifno++;
 355                 } else if ((ifno == 2) && (ch & 0x10)) { /* TA(2) */
 356                         dev->ta1 = 0x11;
 357                         ifno++;
 358                 }
 359
 360                 DEBUGP(5, dev, "Yi=%.2x\n", ch & 0xf0);
 361                 ix += ((ch & 0x10) >> 4)        /* no of int.face chars */
 362                     +((ch & 0x20) >> 5)
 363                     + ((ch & 0x40) >> 6)
 364                     + ((ch & 0x80) >> 7);
 365                 /* ATRLENCK(dev,ix); */
 366                 if (ch & 0x80) {        /* TDi */
 367                         ch = dev->atr[ix];
 368                         if ((ch & 0x0f)) {
 369                                 any_t1 = 1;
 370                                 DEBUGP(5, dev, "card is capable of T=1\n");
 371                         } else {
 372                                 any_t0 = 1;
 373                                 DEBUGP(5, dev, "card is capable of T=0\n");
 374                         }
 375                 } else
 376                         done = 1;
 377         } while (!done);
 378
 379         DEBUGP(5, dev, "ix=%d noHist=%d any_t1=%d\n",
 380               ix, dev->atr[1] & 15, any_t1);
 381         if (ix + 1 + (dev->atr[1] & 0x0f) + any_t1 != dev->atr_len) {
 382                 DEBUGP(5, dev, "length error\n");
 383                 return 0;
 384         }
 385         if (any_t0)
 386                 set_bit(IS_ANY_T0, &dev->flags);
 387
 388         if (any_t1) {           /* compute csum */
 389                 dev->atr_csum = 0;
 390 #ifdef ATR_CSUM
 391                 for (i = 1; i < dev->atr_len; i++)
 392                         dev->atr_csum ^= dev->atr[i];
 393                 if (dev->atr_csum) {
 394                         set_bit(IS_BAD_CSUM, &dev->flags);
 395                         DEBUGP(5, dev, "bad checksum\n");
 396                         goto return_0;
 397                 }
 398 #endif
 399                 if (any_t0 == 0)
 400                         dev->proto = 1; /* XXX PROTO */
 401                 set_bit(IS_ANY_T1, &dev->flags);
 402         }
 403
 404         return 1;
 405 }
 406
 407 struct card_fixup {
 408         char atr[12];
 409         u_int8_t atr_len;
 410         u_int8_t stopbits;
 411 };
 412
 413 static struct card_fixup card_fixups[] = {
 414         {       /* ACOS */
 415                 .atr = { 0x3b, 0xb3, 0x11, 0x00, 0x00, 0x41, 0x01 },
 416                 .atr_len = 7,
 417                 .stopbits = 0x03,
 418         },
 419         {       /* Motorola */
 420                 .atr = {0x3b, 0x76, 0x13, 0x00, 0x00, 0x80, 0x62, 0x07,
 421                         0x41, 0x81, 0x81 },
 422                 .atr_len = 11,
 423                 .stopbits = 0x04,
 424         },
 425 };
 426
 427 static void set_cardparameter(struct cm4000_dev *dev)
 428 {
 429         int i;
 430         unsigned int iobase = dev->p_dev->io.BasePort1;
 431         u_int8_t stopbits = 0x02; /* ISO default */
 432
 433         DEBUGP(3, dev, "-> set_cardparameter\n");
 434
 435         dev->flags1 = dev->flags1 | (((dev->baudv - 1) & 0x0100) >> 8);
 436         xoutb(dev->flags1, REG_FLAGS1(iobase));
 437         DEBUGP(5, dev, "flags1 = 0x%02x\n", dev->flags1);
 438
 439         /* set baudrate */
 440         xoutb((unsigned char)((dev->baudv - 1) & 0xFF), REG_BAUDRATE(iobase));
 441
 442         DEBUGP(5, dev, "baudv = %i -> write 0x%02x\n", dev->baudv,
 443               ((dev->baudv - 1) & 0xFF));
 444
 445         /* set stopbits */
 446         for (i = 0; i < ARRAY_SIZE(card_fixups); i++) {
 447                 if (!memcmp(dev->atr, card_fixups[i].atr,
 448                             card_fixups[i].atr_len))
 449                         stopbits = card_fixups[i].stopbits;
 450         }
 451         xoutb(stopbits, REG_STOPBITS(iobase));
 452
 453         DEBUGP(3, dev, "<- set_cardparameter\n");
 454 }
 455
 456 static int set_protocol(struct cm4000_dev *dev, struct ptsreq *ptsreq)
 457 {
 458
 459         unsigned long tmp, i;
 460         unsigned short num_bytes_read;
 461         unsigned char pts_reply[4];
 462         ssize_t rc;
 463         unsigned int iobase = dev->p_dev->io.BasePort1;
 464
 465         rc = 0;
 466
 467         DEBUGP(3, dev, "-> set_protocol\n");
 468         DEBUGP(5, dev, "ptsreq->Protocol = 0x%.8x, ptsreq->Flags=0x%.8x, "
 469                  "ptsreq->pts1=0x%.2x, ptsreq->pts2=0x%.2x, "
 470                  "ptsreq->pts3=0x%.2x\n", (unsigned int)ptsreq->protocol,
 471                  (unsigned int)ptsreq->flags, ptsreq->pts1, ptsreq->pts2,
 472                  ptsreq->pts3);
 473
 474         /* Fill PTS structure */
 475         dev->pts[0] = 0xff;
 476         dev->pts[1] = 0x00;
 477         tmp = ptsreq->protocol;
 478         while ((tmp = (tmp >> 1)) > 0)
 479                 dev->pts[1]++;
 480         dev->proto = dev->pts[1];       /* Set new protocol */
 481         dev->pts[1] = (0x01 << 4) | (dev->pts[1]);
 482
 483         /* Correct Fi/Di according to CM4000 Fi/Di table */
 484         DEBUGP(5, dev, "Ta(1) from ATR is 0x%.2x\n", dev->ta1);
 485         /* set Fi/Di according to ATR TA(1) */
 486         dev->pts[2] = fi_di_table[dev->ta1 & 0x0F][(dev->ta1 >> 4) & 0x0F];
 487
 488         /* Calculate PCK character */
 489         dev->pts[3] = dev->pts[0] ^ dev->pts[1] ^ dev->pts[2];
 490
 491         DEBUGP(5, dev, "pts0=%.2x, pts1=%.2x, pts2=%.2x, pts3=%.2x\n",
 492                dev->pts[0], dev->pts[1], dev->pts[2], dev->pts[3]);
 493
 494         /* check card convention */
 495         if (test_bit(IS_INVREV, &dev->flags))
 496                 str_invert_revert(dev->pts, 4);
 497
 498         /* reset SM */
 499         xoutb(0x80, REG_FLAGS0(iobase));
 500
 501         /* Enable access to the message buffer */
 502         DEBUGP(5, dev, "Enable access to the messages buffer\n");
 503         dev->flags1 = 0x20      /* T_Active */
 504             | (test_bit(IS_INVREV, &dev->flags) ? 0x02 : 0x00) /* inv parity */
 505             | ((dev->baudv >> 8) & 0x01);       /* MSB-baud */
 506         xoutb(dev->flags1, REG_FLAGS1(iobase));
 507
 508         DEBUGP(5, dev, "Enable message buffer -> flags1 = 0x%.2x\n",
 509                dev->flags1);
 510
 511         /* write challenge to the buffer */
 512         DEBUGP(5, dev, "Write challenge to buffer: ");
 513         for (i = 0; i < 4; i++) {
 514                 xoutb(i, REG_BUF_ADDR(iobase));
 515                 xoutb(dev->pts[i], REG_BUF_DATA(iobase));       /* buf data */
 516 #ifdef PCMCIA_DEBUG
 517                 if (pc_debug >= 5)
 518                         printk("0x%.2x ", dev->pts[i]);
 519         }
 520         if (pc_debug >= 5)
 521                 printk("\n");
 522 #else
 523         }
 524 #endif
 525
 526         /* set number of bytes to write */
 527         DEBUGP(5, dev, "Set number of bytes to write\n");
 528         xoutb(0x04, REG_NUM_SEND(iobase));
 529
 530         /* Trigger CARDMAN CONTROLLER */
 531         xoutb(0x50, REG_FLAGS0(iobase));
 532
 533         /* Monitor progress */
 534         /* wait for xmit done */
 535         DEBUGP(5, dev, "Waiting for NumRecBytes getting valid\n");
 536
 537         for (i = 0; i < 100; i++) {
 538                 if (inb(REG_FLAGS0(iobase)) & 0x08) {
 539                         DEBUGP(5, dev, "NumRecBytes is valid\n");
 540                         break;
 541                 }
 542                 mdelay(10);
 543         }
 544         if (i == 100) {
 545                 DEBUGP(5, dev, "Timeout waiting for NumRecBytes getting "
 546                        "valid\n");
 547                 rc = -EIO;
 548                 goto exit_setprotocol;
 549         }
 550
 551         DEBUGP(5, dev, "Reading NumRecBytes\n");
 552         for (i = 0; i < 100; i++) {
 553                 io_read_num_rec_bytes(iobase, &num_bytes_read);
 554                 if (num_bytes_read >= 4) {
 555                         DEBUGP(2, dev, "NumRecBytes = %i\n", num_bytes_read);
 556                         break;
 557                 }
 558                 mdelay(10);
 559         }
 560
 561         /* check whether it is a short PTS reply? */
 562         if (num_bytes_read == 3)
 563                 i = 0;
 564
 565         if (i == 100) {
 566                 DEBUGP(5, dev, "Timeout reading num_bytes_read\n");
 567                 rc = -EIO;
 568                 goto exit_setprotocol;
 569         }
 570
 571         DEBUGP(5, dev, "Reset the CARDMAN CONTROLLER\n");
 572         xoutb(0x80, REG_FLAGS0(iobase));
 573
 574         /* Read PPS reply */
 575         DEBUGP(5, dev, "Read PPS reply\n");
 576         for (i = 0; i < num_bytes_read; i++) {
 577                 xoutb(i, REG_BUF_ADDR(iobase));
 578                 pts_reply[i] = inb(REG_BUF_DATA(iobase));
 579         }
 580
 581 #ifdef PCMCIA_DEBUG
 582         DEBUGP(2, dev, "PTSreply: ");
 583         for (i = 0; i < num_bytes_read; i++) {
 584                 if (pc_debug >= 5)
 585                         printk("0x%.2x ", pts_reply[i]);
 586         }
 587         printk("\n");
 588 #endif  /* PCMCIA_DEBUG */
 589
 590         DEBUGP(5, dev, "Clear Tactive in Flags1\n");
 591         xoutb(0x20, REG_FLAGS1(iobase));
 592
 593         /* Compare ptsreq and ptsreply */
 594         if ((dev->pts[0] == pts_reply[0]) &&
 595             (dev->pts[1] == pts_reply[1]) &&
 596             (dev->pts[2] == pts_reply[2]) && (dev->pts[3] == pts_reply[3])) {
 597                 /* setcardparameter according to PPS */
 598                 dev->baudv = calc_baudv(dev->pts[2]);
 599                 set_cardparameter(dev);
 600         } else if ((dev->pts[0] == pts_reply[0]) &&
 601                    ((dev->pts[1] & 0xef) == pts_reply[1]) &&
 602                    ((pts_reply[0] ^ pts_reply[1]) == pts_reply[2])) {
 603                 /* short PTS reply, set card parameter to default values */
 604                 dev->baudv = calc_baudv(0x11);
 605                 set_cardparameter(dev);
 606         } else
 607                 rc = -EIO;
 608
 609 exit_setprotocol:
 610         DEBUGP(3, dev, "<- set_protocol\n");
 611         return rc;
 612 }
 613
 614 static int io_detect_cm4000(unsigned int iobase, struct cm4000_dev *dev)
 615 {
 616
 617         /* note: statemachine is assumed to be reset */
 618         if (inb(REG_FLAGS0(iobase)) & 8) {
 619                 clear_bit(IS_ATR_VALID, &dev->flags);
 620                 set_bit(IS_CMM_ABSENT, &dev->flags);
 621                 return 0;       /* detect CMM = 1 -> failure */
 622         }
 623         /* xoutb(0x40, REG_FLAGS1(iobase)); detectCMM */
 624         xoutb(dev->flags1 | 0x40, REG_FLAGS1(iobase));
 625         if ((inb(REG_FLAGS0(iobase)) & 8) == 0) {
 626                 clear_bit(IS_ATR_VALID, &dev->flags);
 627                 set_bit(IS_CMM_ABSENT, &dev->flags);
 628                 return 0;       /* detect CMM=0 -> failure */
 629         }
 630         /* clear detectCMM again by restoring original flags1 */
 631         xoutb(dev->flags1, REG_FLAGS1(iobase));
 632         return 1;
 633 }
 634
 635 static void terminate_monitor(struct cm4000_dev *dev)
 636 {
 637
 638         /* tell the monitor to stop and wait until
 639          * it terminates.
 640          */
 641         DEBUGP(3, dev, "-> terminate_monitor\n");
 642         wait_event_interruptible(dev->devq,
 643                                  test_and_set_bit(LOCK_MONITOR,
 644                                                   (void *)&dev->flags));
 645
 646         /* now, LOCK_MONITOR has been set.
 647          * allow a last cycle in the monitor.
 648          * the monitor will indicate that it has
 649          * finished by clearing this bit.
 650          */
 651         DEBUGP(5, dev, "Now allow last cycle of monitor!\n");
 652         while (test_bit(LOCK_MONITOR, (void *)&dev->flags))
 653                 msleep(25);
 654
 655         DEBUGP(5, dev, "Delete timer\n");
 656         del_timer_sync(&dev->timer);
 657 #ifdef PCMCIA_DEBUG
 658         dev->monitor_running = 0;
 659 #endif
 660
 661         DEBUGP(3, dev, "<- terminate_monitor\n");
 662 }
 663
 664 /*
 665  * monitor the card every 50msec. as a side-effect, retrieve the
 666  * atr once a card is inserted. another side-effect of retrieving the
 667  * atr is that the card will be powered on, so there is no need to
 668  * power on the card explictely from the application: the driver
 669  * is already doing that for you.
 670  */
 671
 672 static void monitor_card(unsigned long p)
 673 {
 674         struct cm4000_dev *dev = (struct cm4000_dev *) p;
 675         unsigned int iobase = dev->p_dev->io.BasePort1;
 676         unsigned short s;
 677         struct ptsreq ptsreq;
 678         int i, atrc;
 679
 680         DEBUGP(7, dev, "->  monitor_card\n");
 681
 682         /* if someone has set the lock for us: we're done! */
 683         if (test_and_set_bit(LOCK_MONITOR, &dev->flags)) {
 684                 DEBUGP(4, dev, "About to stop monitor\n");
 685                 /* no */
 686                 dev->rlen =
 687                     dev->rpos =
 688                     dev->atr_csum = dev->atr_len_retry = dev->cwarn = 0;
 689                 dev->mstate = M_FETCH_ATR;
 690                 clear_bit(LOCK_MONITOR, &dev->flags);
 691                 /* close et al. are sleeping on devq, so wake it */
 692                 wake_up_interruptible(&dev->devq);
 693                 DEBUGP(2, dev, "<- monitor_card (we are done now)\n");
 694                 return;
 695         }
 696
 697         /* try to lock io: if it is already locked, just add another timer */
 698         if (test_and_set_bit(LOCK_IO, (void *)&dev->flags)) {
 699                 DEBUGP(4, dev, "Couldn't get IO lock\n");
 700                 goto return_with_timer;
 701         }
 702
 703         /* is a card/a reader inserted at all ? */
 704         dev->flags0 = xinb(REG_FLAGS0(iobase));
 705         DEBUGP(7, dev, "dev->flags0 = 0x%2x\n", dev->flags0);
 706         DEBUGP(7, dev, "smartcard present: %s\n",
 707                dev->flags0 & 1 ? "yes" : "no");
 708         DEBUGP(7, dev, "cardman present: %s\n",
 709                dev->flags0 == 0xff ? "no" : "yes");
 710
 711         if ((dev->flags0 & 1) == 0      /* no smartcard inserted */
 712             || dev->flags0 == 0xff) {   /* no cardman inserted */
 713                 /* no */
 714                 dev->rlen =
 715                     dev->rpos =
 716                     dev->atr_csum = dev->atr_len_retry = dev->cwarn = 0;
 717                 dev->mstate = M_FETCH_ATR;
 718
 719                 dev->flags &= 0x000000ff; /* only keep IO and MONITOR locks */
 720
 721                 if (dev->flags0 == 0xff) {
 722                         DEBUGP(4, dev, "set IS_CMM_ABSENT bit\n");
 723                         set_bit(IS_CMM_ABSENT, &dev->flags);
 724                 } else if (test_bit(IS_CMM_ABSENT, &dev->flags)) {
 725                         DEBUGP(4, dev, "clear IS_CMM_ABSENT bit "
 726                                "(card is removed)\n");
 727                         clear_bit(IS_CMM_ABSENT, &dev->flags);
 728                 }
 729
 730                 goto release_io;
 731         } else if ((dev->flags0 & 1) && test_bit(IS_CMM_ABSENT, &dev->flags)) {
 732                 /* cardman and card present but cardman was absent before
 733                  * (after suspend with inserted card) */
 734                 DEBUGP(4, dev, "clear IS_CMM_ABSENT bit (card is inserted)\n");
 735                 clear_bit(IS_CMM_ABSENT, &dev->flags);
 736         }
 737
 738         if (test_bit(IS_ATR_VALID, &dev->flags) == 1) {
 739                 DEBUGP(7, dev, "believe ATR is already valid (do nothing)\n");
 740                 goto release_io;
 741         }
 742
 743         switch (dev->mstate) {
 744                 unsigned char flags0;
 745         case M_CARDOFF:
 746                 DEBUGP(4, dev, "M_CARDOFF\n");
 747                 flags0 = inb(REG_FLAGS0(iobase));
 748                 if (flags0 & 0x02) {
 749                         /* wait until Flags0 indicate power is off */
 750                         dev->mdelay = T_10MSEC;
 751                 } else {
 752                         /* Flags0 indicate power off and no card inserted now;
 753                          * Reset CARDMAN CONTROLLER */
 754                         xoutb(0x80, REG_FLAGS0(iobase));
 755
 756                         /* prepare for fetching ATR again: after card off ATR
 757                          * is read again automatically */
 758                         dev->rlen =
 759                             dev->rpos =
 760                             dev->atr_csum =
 761                             dev->atr_len_retry = dev->cwarn = 0;
 762                         dev->mstate = M_FETCH_ATR;
 763
 764                         /* minimal gap between CARDOFF and read ATR is 50msec */
 765                         dev->mdelay = T_50MSEC;
 766                 }
 767                 break;
 768         case M_FETCH_ATR:
 769                 DEBUGP(4, dev, "M_FETCH_ATR\n");
 770                 xoutb(0x80, REG_FLAGS0(iobase));
 771                 DEBUGP(4, dev, "Reset BAUDV to 9600\n");
 772                 dev->baudv = 0x173;     /* 9600 */
 773                 xoutb(0x02, REG_STOPBITS(iobase));      /* stopbits=2 */
 774                 xoutb(0x73, REG_BAUDRATE(iobase));      /* baud value */
 775                 xoutb(0x21, REG_FLAGS1(iobase));        /* T_Active=1, baud
 776                                                            value */
 777                 /* warm start vs. power on: */
 778                 xoutb(dev->flags0 & 2 ? 0x46 : 0x44, REG_FLAGS0(iobase));
 779                 dev->mdelay = T_40MSEC;
 780                 dev->mstate = M_TIMEOUT_WAIT;
 781                 break;
 782         case M_TIMEOUT_WAIT:
 783                 DEBUGP(4, dev, "M_TIMEOUT_WAIT\n");
 784                 /* numRecBytes */
 785                 io_read_num_rec_bytes(iobase, &dev->atr_len);
 786                 dev->mdelay = T_10MSEC;
 787                 dev->mstate = M_READ_ATR_LEN;
 788                 break;
 789         case M_READ_ATR_LEN:
 790                 DEBUGP(4, dev, "M_READ_ATR_LEN\n");
 791                 /* infinite loop possible, since there is no timeout */
 792
 793 #define MAX_ATR_LEN_RETRY       100
 794
 795                 if (dev->atr_len == io_read_num_rec_bytes(iobase, &s)) {
 796                         if (dev->atr_len_retry++ >= MAX_ATR_LEN_RETRY) {                                        /* + XX msec */
 797                                 dev->mdelay = T_10MSEC;
 798                                 dev->mstate = M_READ_ATR;
 799                         }
 800                 } else {
 801                         dev->atr_len = s;
 802                         dev->atr_len_retry = 0; /* set new timeout */
 803                 }
 804
 805                 DEBUGP(4, dev, "Current ATR_LEN = %i\n", dev->atr_len);
 806                 break;
 807         case M_READ_ATR:
 808                 DEBUGP(4, dev, "M_READ_ATR\n");
 809                 xoutb(0x80, REG_FLAGS0(iobase));        /* reset SM */
 810                 for (i = 0; i < dev->atr_len; i++) {
 811                         xoutb(i, REG_BUF_ADDR(iobase));
 812                         dev->atr[i] = inb(REG_BUF_DATA(iobase));
 813                 }
 814                 /* Deactivate T_Active flags */
 815                 DEBUGP(4, dev, "Deactivate T_Active flags\n");
 816                 dev->flags1 = 0x01;
 817                 xoutb(dev->flags1, REG_FLAGS1(iobase));
 818
 819                 /* atr is present (which doesnt mean it's valid) */
 820                 set_bit(IS_ATR_PRESENT, &dev->flags);
 821                 if (dev->atr[0] == 0x03)
 822                         str_invert_revert(dev->atr, dev->atr_len);
 823                 atrc = parse_atr(dev);
 824                 if (atrc == 0) {        /* atr invalid */
 825                         dev->mdelay = 0;
 826                         dev->mstate = M_BAD_CARD;
 827                 } else {
 828                         dev->mdelay = T_50MSEC;
 829                         dev->mstate = M_ATR_PRESENT;
 830                         set_bit(IS_ATR_VALID, &dev->flags);
 831                 }
 832
 833                 if (test_bit(IS_ATR_VALID, &dev->flags) == 1) {
 834                         DEBUGP(4, dev, "monitor_card: ATR valid\n");
 835                         /* if ta1 == 0x11, no PPS necessary (default values) */
 836                         /* do not do PPS with multi protocol cards */
 837                         if ((test_bit(IS_AUTOPPS_ACT, &dev->flags) == 0) &&
 838                             (dev->ta1 != 0x11) &&
 839                             !(test_bit(IS_ANY_T0, &dev->flags) &&
 840                             test_bit(IS_ANY_T1, &dev->flags))) {
 841                                 DEBUGP(4, dev, "Perform AUTOPPS\n");
 842                                 set_bit(IS_AUTOPPS_ACT, &dev->flags);
 843                                 ptsreq.protocol = ptsreq.protocol =
 844                                     (0x01 << dev->proto);
 845                                 ptsreq.flags = 0x01;
 846                                 ptsreq.pts1 = 0x00;
 847                                 ptsreq.pts2 = 0x00;
 848                                 ptsreq.pts3 = 0x00;
 849                                 if (set_protocol(dev, &ptsreq) == 0) {
 850                                         DEBUGP(4, dev, "AUTOPPS ret SUCC\n");
 851                                         clear_bit(IS_AUTOPPS_ACT, &dev->flags);
 852                                         wake_up_interruptible(&dev->atrq);
 853                                 } else {
 854                                         DEBUGP(4, dev, "AUTOPPS failed: "
 855                                                "repower using defaults\n");
 856                                         /* prepare for repowering  */
 857                                         clear_bit(IS_ATR_PRESENT, &dev->flags);
 858                                         clear_bit(IS_ATR_VALID, &dev->flags);
 859                                         dev->rlen =
 860                                             dev->rpos =
 861                                             dev->atr_csum =
 862                                             dev->atr_len_retry = dev->cwarn = 0;
 863                                         dev->mstate = M_FETCH_ATR;
 864
 865                                         dev->mdelay = T_50MSEC;
 866                                 }
 867                         } else {
 868                                 /* for cards which use slightly different
 869                                  * params (extra guard time) */
 870                                 set_cardparameter(dev);
 871                                 if (test_bit(IS_AUTOPPS_ACT, &dev->flags) == 1)
 872                                         DEBUGP(4, dev, "AUTOPPS already active "
 873                                                "2nd try:use default values\n");
 874                                 if (dev->ta1 == 0x11)
 875                                         DEBUGP(4, dev, "No AUTOPPS necessary "
 876                                                "TA(1)==0x11\n");
 877                                 if (test_bit(IS_ANY_T0, &dev->flags)
 878                                     && test_bit(IS_ANY_T1, &dev->flags))
 879                                         DEBUGP(4, dev, "Do NOT perform AUTOPPS "
 880                                                "with multiprotocol cards\n");
 881                                 clear_bit(IS_AUTOPPS_ACT, &dev->flags);
 882                                 wake_up_interruptible(&dev->atrq);
 883                         }
 884                 } else {
 885                         DEBUGP(4, dev, "ATR invalid\n");
 886                         wake_up_interruptible(&dev->atrq);
 887                 }
 888                 break;
 889         case M_BAD_CARD:
 890                 DEBUGP(4, dev, "M_BAD_CARD\n");
 891                 /* slow down warning, but prompt immediately after insertion */
 892                 if (dev->cwarn == 0 || dev->cwarn == 10) {
 893                         set_bit(IS_BAD_CARD, &dev->flags);
 894                         printk(KERN_WARNING MODULE_NAME ": device %s: ",
 895                                dev->node.dev_name);
 896                         if (test_bit(IS_BAD_CSUM, &dev->flags)) {
 897                                 DEBUGP(4, dev, "ATR checksum (0x%.2x, should "
 898                                        "be zero) failed\n", dev->atr_csum);
 899                         }
 900 #ifdef PCMCIA_DEBUG
 901                         else if (test_bit(IS_BAD_LENGTH, &dev->flags)) {
 902                                 DEBUGP(4, dev, "ATR length error\n");
 903                         } else {
 904                                 DEBUGP(4, dev, "card damaged or wrong way "
 905                                         "inserted\n");
 906                         }
 907 #endif
 908                         dev->cwarn = 0;
 909                         wake_up_interruptible(&dev->atrq);      /* wake open */
 910                 }
 911                 dev->cwarn++;
 912                 dev->mdelay = T_100MSEC;
 913                 dev->mstate = M_FETCH_ATR;
 914                 break;
 915         default:
 916                 DEBUGP(7, dev, "Unknown action\n");
 917                 break;          /* nothing */
 918         }
 919
 920 release_io:
 921         DEBUGP(7, dev, "release_io\n");
 922         clear_bit(LOCK_IO, &dev->flags);
 923         wake_up_interruptible(&dev->ioq);       /* whoever needs IO */
 924
 925 return_with_timer:
 926         DEBUGP(7, dev, "<- monitor_card (returns with timer)\n");
 927         mod_timer(&dev->timer, jiffies + dev->mdelay);
 928         clear_bit(LOCK_MONITOR, &dev->flags);
 929 }
 930
 931 /* Interface to userland (file_operations) */
 932
 933 static ssize_t cmm_read(struct file *filp, __user char *buf, size_t count,
 934                         loff_t *ppos)
 935 {
 936         struct cm4000_dev *dev = filp->private_data;
 937         unsigned int iobase = dev->p_dev->io.BasePort1;
 938         ssize_t rc;
 939         int i, j, k;
 940
 941         DEBUGP(2, dev, "-> cmm_read(%s,%d)\n", current->comm, current->pid);
 942
 943         if (count == 0)         /* according to manpage */
 944                 return 0;
 945
 946         if (!pcmcia_dev_present(dev->p_dev) || /* device removed */
 947             test_bit(IS_CMM_ABSENT, &dev->flags))
 948                 return -ENODEV;
 949
 950         if (test_bit(IS_BAD_CSUM, &dev->flags))
 951                 return -EIO;
 952
 953         /* also see the note about this in cmm_write */
 954         if (wait_event_interruptible
 955             (dev->atrq,
 956              ((filp->f_flags & O_NONBLOCK)
 957               || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags) != 0)))) {
 958                 if (filp->f_flags & O_NONBLOCK)
 959                         return -EAGAIN;
 960                 return -ERESTARTSYS;
 961         }
 962
 963         if (test_bit(IS_ATR_VALID, &dev->flags) == 0)
 964                 return -EIO;
 965
 966         /* this one implements blocking IO */
 967         if (wait_event_interruptible
 968             (dev->readq,
 969              ((filp->f_flags & O_NONBLOCK) || (dev->rpos < dev->rlen)))) {
 970                 if (filp->f_flags & O_NONBLOCK)
 971                         return -EAGAIN;
 972                 return -ERESTARTSYS;
 973         }
 974
 975         /* lock io */
 976         if (wait_event_interruptible
 977             (dev->ioq,
 978              ((filp->f_flags & O_NONBLOCK)
 979               || (test_and_set_bit(LOCK_IO, (void *)&dev->flags) == 0)))) {
 980                 if (filp->f_flags & O_NONBLOCK)
 981                         return -EAGAIN;
 982                 return -ERESTARTSYS;
 983         }
 984
 985         rc = 0;
 986         dev->flags0 = inb(REG_FLAGS0(iobase));
 987         if ((dev->flags0 & 1) == 0      /* no smartcard inserted */
 988             || dev->flags0 == 0xff) {   /* no cardman inserted */
 989                 clear_bit(IS_ATR_VALID, &dev->flags);
 990                 if (dev->flags0 & 1) {
 991                         set_bit(IS_CMM_ABSENT, &dev->flags);
 992                         rc = -ENODEV;
 993                 }
 994                 rc = -EIO;
 995                 goto release_io;
 996         }
 997
 998         DEBUGP(4, dev, "begin read answer\n");
 999         j = min(count, (size_t)(dev->rlen - dev->rpos));
1000         k = dev->rpos;
1001         if (k + j > 255)
1002                 j = 256 - k;
1003         DEBUGP(4, dev, "read1 j=%d\n", j);
1004         for (i = 0; i < j; i++) {
1005                 xoutb(k++, REG_BUF_ADDR(iobase));
1006                 dev->rbuf[i] = xinb(REG_BUF_DATA(iobase));
1007         }
1008         j = min(count, (size_t)(dev->rlen - dev->rpos));
1009         if (k + j > 255) {
1010                 DEBUGP(4, dev, "read2 j=%d\n", j);
1011                 dev->flags1 |= 0x10;    /* MSB buf addr set */
1012                 xoutb(dev->flags1, REG_FLAGS1(iobase));
1013                 for (; i < j; i++) {
1014                         xoutb(k++, REG_BUF_ADDR(iobase));
1015                         dev->rbuf[i] = xinb(REG_BUF_DATA(iobase));
1016                 }
1017         }
1018
1019         if (dev->proto == 0 && count > dev->rlen - dev->rpos) {
1020                 DEBUGP(4, dev, "T=0 and count > buffer\n");
1021                 dev->rbuf[i] = dev->rbuf[i - 1];
1022                 dev->rbuf[i - 1] = dev->procbyte;
1023                 j++;
1024         }
1025         count = j;
1026
1027         dev->rpos = dev->rlen + 1;
1028
1029         /* Clear T1Active */
1030         DEBUGP(4, dev, "Clear T1Active\n");
1031         dev->flags1 &= 0xdf;
1032         xoutb(dev->flags1, REG_FLAGS1(iobase));
1033
1034         xoutb(0, REG_FLAGS1(iobase));   /* clear detectCMM */
1035         /* last check before exit */
1036         if (!io_detect_cm4000(iobase, dev))
1037                 count = -ENODEV;
1038
1039         if (test_bit(IS_INVREV, &dev->flags) && count > 0)
1040                 str_invert_revert(dev->rbuf, count);
1041
1042         if (copy_to_user(buf, dev->rbuf, count))
1043                 return -EFAULT;
1044
1045 release_io:
1046         clear_bit(LOCK_IO, &dev->flags);
1047         wake_up_interruptible(&dev->ioq);
1048
1049         DEBUGP(2, dev, "<- cmm_read returns: rc = %Zi\n",
1050                (rc < 0 ? rc : count));
1051         return rc < 0 ? rc : count;
1052 }
1053
1054 static ssize_t cmm_write(struct file *filp, const char __user *buf,
1055                          size_t count, loff_t *ppos)
1056 {
1057         struct cm4000_dev *dev = (struct cm4000_dev *) filp->private_data;
1058         unsigned int iobase = dev->p_dev->io.BasePort1;
1059         unsigned short s;
1060         unsigned char tmp;
1061         unsigned char infolen;
1062         unsigned char sendT0;
1063         unsigned short nsend;
1064         unsigned short nr;
1065         ssize_t rc;
1066         int i;
1067
1068         DEBUGP(2, dev, "-> cmm_write(%s,%d)\n", current->comm, current->pid);
1069
1070         if (count == 0)         /* according to manpage */
1071                 return 0;
1072
1073         if (dev->proto == 0 && count < 4) {
1074                 /* T0 must have at least 4 bytes */
1075                 DEBUGP(4, dev, "T0 short write\n");
1076                 return -EIO;
1077         }
1078
1079         nr = count & 0x1ff;     /* max bytes to write */
1080
1081         sendT0 = dev->proto ? 0 : nr > 5 ? 0x08 : 0;
1082
1083         if (!pcmcia_dev_present(dev->p_dev) || /* device removed */
1084             test_bit(IS_CMM_ABSENT, &dev->flags))
1085                 return -ENODEV;
1086
1087         if (test_bit(IS_BAD_CSUM, &dev->flags)) {
1088                 DEBUGP(4, dev, "bad csum\n");
1089                 return -EIO;
1090         }
1091
1092         /*
1093          * wait for atr to become valid.
1094          * note: it is important to lock this code. if we dont, the monitor
1095          * could be run between test_bit and the call to sleep on the
1096          * atr-queue.  if *then* the monitor detects atr valid, it will wake up
1097          * any process on the atr-queue, *but* since we have been interrupted,
1098          * we do not yet sleep on this queue. this would result in a missed
1099          * wake_up and the calling process would sleep forever (until
1100          * interrupted).  also, do *not* restore_flags before sleep_on, because
1101          * this could result in the same situation!
1102          */
1103         if (wait_event_interruptible
1104             (dev->atrq,
1105              ((filp->f_flags & O_NONBLOCK)
1106               || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags) != 0)))) {
1107                 if (filp->f_flags & O_NONBLOCK)
1108                         return -EAGAIN;
1109                 return -ERESTARTSYS;
1110         }
1111
1112         if (test_bit(IS_ATR_VALID, &dev->flags) == 0) { /* invalid atr */
1113                 DEBUGP(4, dev, "invalid ATR\n");
1114                 return -EIO;
1115         }
1116
1117         /* lock io */
1118         if (wait_event_interruptible
1119             (dev->ioq,
1120              ((filp->f_flags & O_NONBLOCK)
1121               || (test_and_set_bit(LOCK_IO, (void *)&dev->flags) == 0)))) {
1122                 if (filp->f_flags & O_NONBLOCK)
1123                         return -EAGAIN;
1124                 return -ERESTARTSYS;
1125         }
1126
1127         if (copy_from_user(dev->sbuf, buf, ((count > 512) ? 512 : count)))
1128                 return -EFAULT;
1129
1130         rc = 0;
1131         dev->flags0 = inb(REG_FLAGS0(iobase));
1132         if ((dev->flags0 & 1) == 0      /* no smartcard inserted */
1133             || dev->flags0 == 0xff) {   /* no cardman inserted */
1134                 clear_bit(IS_ATR_VALID, &dev->flags);
1135                 if (dev->flags0 & 1) {
1136                         set_bit(IS_CMM_ABSENT, &dev->flags);
1137                         rc = -ENODEV;
1138                 } else {
1139                         DEBUGP(4, dev, "IO error\n");
1140                         rc = -EIO;
1141                 }
1142                 goto release_io;
1143         }
1144
1145         xoutb(0x80, REG_FLAGS0(iobase));        /* reset SM  */
1146
1147         if (!io_detect_cm4000(iobase, dev)) {
1148                 rc = -ENODEV;
1149                 goto release_io;
1150         }
1151
1152         /* reflect T=0 send/read mode in flags1 */
1153         dev->flags1 |= (sendT0);
1154
1155         set_cardparameter(dev);
1156
1157         /* dummy read, reset flag procedure received */
1158         tmp = inb(REG_FLAGS1(iobase));
1159
1160         dev->flags1 = 0x20      /* T_Active */
1161             | (sendT0)
1162             | (test_bit(IS_INVREV, &dev->flags) ? 2 : 0)/* inverse parity  */
1163             | (((dev->baudv - 1) & 0x0100) >> 8);       /* MSB-Baud */
1164         DEBUGP(1, dev, "set dev->flags1 = 0x%.2x\n", dev->flags1);
1165         xoutb(dev->flags1, REG_FLAGS1(iobase));
1166
1167         /* xmit data */
1168         DEBUGP(4, dev, "Xmit data\n");
1169         for (i = 0; i < nr; i++) {
1170                 if (i >= 256) {
1171                         dev->flags1 = 0x20      /* T_Active */
1172                             | (sendT0)  /* SendT0 */
1173                                 /* inverse parity: */
1174                             | (test_bit(IS_INVREV, &dev->flags) ? 2 : 0)
1175                             | (((dev->baudv - 1) & 0x0100) >> 8) /* MSB-Baud */
1176                             | 0x10;     /* set address high */
1177                         DEBUGP(4, dev, "dev->flags = 0x%.2x - set address "
1178                                "high\n", dev->flags1);
1179                         xoutb(dev->flags1, REG_FLAGS1(iobase));
1180                 }
1181                 if (test_bit(IS_INVREV, &dev->flags)) {
1182                         DEBUGP(4, dev, "Apply inverse convention for 0x%.2x "
1183                                 "-> 0x%.2x\n", (unsigned char)dev->sbuf[i],
1184                               invert_revert(dev->sbuf[i]));
1185                         xoutb(i, REG_BUF_ADDR(iobase));
1186                         xoutb(invert_revert(dev->sbuf[i]),
1187                               REG_BUF_DATA(iobase));
1188                 } else {
1189                         xoutb(i, REG_BUF_ADDR(iobase));
1190                         xoutb(dev->sbuf[i], REG_BUF_DATA(iobase));
1191                 }
1192         }
1193         DEBUGP(4, dev, "Xmit done\n");
1194
1195         if (dev->proto == 0) {
1196                 /* T=0 proto: 0 byte reply  */
1197                 if (nr == 4) {
1198                         DEBUGP(4, dev, "T=0 assumes 0 byte reply\n");
1199                         xoutb(i, REG_BUF_ADDR(iobase));
1200                         if (test_bit(IS_INVREV, &dev->flags))
1201                                 xoutb(0xff, REG_BUF_DATA(iobase));
1202                         else
1203                                 xoutb(0x00, REG_BUF_DATA(iobase));
1204                 }
1205
1206                 /* numSendBytes */
1207                 if (sendT0)
1208                         nsend = nr;
1209                 else {
1210                         if (nr == 4)
1211                                 nsend = 5;
1212                         else {
1213                                 nsend = 5 + (unsigned char)dev->sbuf[4];
1214                                 if (dev->sbuf[4] == 0)
1215                                         nsend += 0x100;
1216                         }
1217                 }
1218         } else
1219                 nsend = nr;
1220
1221         /* T0: output procedure byte */
1222         if (test_bit(IS_INVREV, &dev->flags)) {
1223                 DEBUGP(4, dev, "T=0 set Procedure byte (inverse-reverse) "
1224                        "0x%.2x\n", invert_revert(dev->sbuf[1]));
1225                 xoutb(invert_revert(dev->sbuf[1]), REG_NUM_BYTES(iobase));
1226         } else {
1227                 DEBUGP(4, dev, "T=0 set Procedure byte 0x%.2x\n", dev->sbuf[1]);
1228                 xoutb(dev->sbuf[1], REG_NUM_BYTES(iobase));
1229         }
1230
1231         DEBUGP(1, dev, "set NumSendBytes = 0x%.2x\n",
1232                (unsigned char)(nsend & 0xff));
1233         xoutb((unsigned char)(nsend & 0xff), REG_NUM_SEND(iobase));
1234
1235         DEBUGP(1, dev, "Trigger CARDMAN CONTROLLER (0x%.2x)\n",
1236                0x40     /* SM_Active */
1237               | (dev->flags0 & 2 ? 0 : 4)       /* power on if needed */
1238               |(dev->proto ? 0x10 : 0x08)       /* T=1/T=0 */
1239               |(nsend & 0x100) >> 8 /* MSB numSendBytes */ );
1240         xoutb(0x40              /* SM_Active */
1241               | (dev->flags0 & 2 ? 0 : 4)       /* power on if needed */
1242               |(dev->proto ? 0x10 : 0x08)       /* T=1/T=0 */
1243               |(nsend & 0x100) >> 8,    /* MSB numSendBytes */
1244               REG_FLAGS0(iobase));
1245
1246         /* wait for xmit done */
1247         if (dev->proto == 1) {
1248                 DEBUGP(4, dev, "Wait for xmit done\n");
1249                 for (i = 0; i < 1000; i++) {
1250                         if (inb(REG_FLAGS0(iobase)) & 0x08)
1251                                 break;
1252                         msleep_interruptible(10);
1253                 }
1254                 if (i == 1000) {
1255                         DEBUGP(4, dev, "timeout waiting for xmit done\n");
1256                         rc = -EIO;
1257                         goto release_io;
1258                 }
1259         }
1260
1261         /* T=1: wait for infoLen */
1262
1263         infolen = 0;
1264         if (dev->proto) {
1265                 /* wait until infoLen is valid */
1266                 for (i = 0; i < 6000; i++) {    /* max waiting time of 1 min */
1267                         io_read_num_rec_bytes(iobase, &s);
1268                         if (s >= 3) {
1269                                 infolen = inb(REG_FLAGS1(iobase));
1270                                 DEBUGP(4, dev, "infolen=%d\n", infolen);
1271                                 break;
1272                         }
1273                         msleep_interruptible(10);
1274                 }
1275                 if (i == 6000) {
1276                         DEBUGP(4, dev, "timeout waiting for infoLen\n");
1277                         rc = -EIO;
1278                         goto release_io;
1279                 }
1280         } else
1281                 clear_bit(IS_PROCBYTE_PRESENT, &dev->flags);
1282
1283         /* numRecBytes | bit9 of numRecytes */
1284         io_read_num_rec_bytes(iobase, &dev->rlen);
1285         for (i = 0; i < 600; i++) {     /* max waiting time of 2 sec */
1286                 if (dev->proto) {
1287                         if (dev->rlen >= infolen + 4)
1288                                 break;
1289                 }
1290                 msleep_interruptible(10);
1291                 /* numRecBytes | bit9 of numRecytes */
1292                 io_read_num_rec_bytes(iobase, &s);
1293                 if (s > dev->rlen) {
1294                         DEBUGP(1, dev, "NumRecBytes inc (reset timeout)\n");
1295                         i = 0;  /* reset timeout */
1296                         dev->rlen = s;
1297                 }
1298                 /* T=0: we are done when numRecBytes doesn't
1299                  *      increment any more and NoProcedureByte
1300                  *      is set and numRecBytes == bytes sent + 6
1301                  *      (header bytes + data + 1 for sw2)
1302                  *      except when the card replies an error
1303                  *      which means, no data will be sent back.
1304                  */
1305                 else if (dev->proto == 0) {
1306                         if ((inb(REG_BUF_ADDR(iobase)) & 0x80)) {
1307                                 /* no procedure byte received since last read */
1308                                 DEBUGP(1, dev, "NoProcedure byte set\n");
1309                                 /* i=0; */
1310                         } else {
1311                                 /* procedure byte received since last read */
1312                                 DEBUGP(1, dev, "NoProcedure byte unset "
1313                                         "(reset timeout)\n");
1314                                 dev->procbyte = inb(REG_FLAGS1(iobase));
1315                                 DEBUGP(1, dev, "Read procedure byte 0x%.2x\n",
1316                                       dev->procbyte);
1317                                 i = 0;  /* resettimeout */
1318                         }
1319                         if (inb(REG_FLAGS0(iobase)) & 0x08) {
1320                                 DEBUGP(1, dev, "T0Done flag (read reply)\n");
1321                                 break;
1322                         }
1323                 }
1324                 if (dev->proto)
1325                         infolen = inb(REG_FLAGS1(iobase));
1326         }
1327         if (i == 600) {
1328                 DEBUGP(1, dev, "timeout waiting for numRecBytes\n");
1329                 rc = -EIO;
1330                 goto release_io;
1331         } else {
1332                 if (dev->proto == 0) {
1333                         DEBUGP(1, dev, "Wait for T0Done bit to be  set\n");
1334                         for (i = 0; i < 1000; i++) {
1335                                 if (inb(REG_FLAGS0(iobase)) & 0x08)
1336                                         break;
1337                                 msleep_interruptible(10);
1338                         }
1339                         if (i == 1000) {
1340                                 DEBUGP(1, dev, "timeout waiting for T0Done\n");
1341                                 rc = -EIO;
1342                                 goto release_io;
1343                         }
1344
1345                         dev->procbyte = inb(REG_FLAGS1(iobase));
1346                         DEBUGP(4, dev, "Read procedure byte 0x%.2x\n",
1347                               dev->procbyte);
1348
1349                         io_read_num_rec_bytes(iobase, &dev->rlen);
1350                         DEBUGP(4, dev, "Read NumRecBytes = %i\n", dev->rlen);
1351
1352                 }
1353         }
1354         /* T=1: read offset=zero, T=0: read offset=after challenge */
1355         dev->rpos = dev->proto ? 0 : nr == 4 ? 5 : nr > dev->rlen ? 5 : nr;
1356         DEBUGP(4, dev, "dev->rlen = %i,  dev->rpos = %i, nr = %i\n",
1357               dev->rlen, dev->rpos, nr);
1358
1359 release_io:
1360         DEBUGP(4, dev, "Reset SM\n");
1361         xoutb(0x80, REG_FLAGS0(iobase));        /* reset SM */
1362
1363         if (rc < 0) {
1364                 DEBUGP(4, dev, "Write failed but clear T_Active\n");
1365                 dev->flags1 &= 0xdf;
1366                 xoutb(dev->flags1, REG_FLAGS1(iobase));
1367         }
1368
1369         clear_bit(LOCK_IO, &dev->flags);
1370         wake_up_interruptible(&dev->ioq);
1371         wake_up_interruptible(&dev->readq);     /* tell read we have data */
1372
1373         /* ITSEC E2: clear write buffer */
1374         memset((char *)dev->sbuf, 0, 512);
1375
1376         /* return error or actually written bytes */
1377         DEBUGP(2, dev, "<- cmm_write\n");
1378         return rc < 0 ? rc : nr;
1379 }
1380
1381 static void start_monitor(struct cm4000_dev *dev)
1382 {
1383         DEBUGP(3, dev, "-> start_monitor\n");
1384         if (!dev->monitor_running) {
1385                 DEBUGP(5, dev, "create, init and add timer\n");
1386                 setup_timer(&dev->timer, monitor_card, (unsigned long)dev);
1387                 dev->monitor_running = 1;
1388                 mod_timer(&dev->timer, jiffies);
1389         } else
1390                 DEBUGP(5, dev, "monitor already running\n");
1391         DEBUGP(3, dev, "<- start_monitor\n");
1392 }
1393
1394 static void stop_monitor(struct cm4000_dev *dev)
1395 {
1396         DEBUGP(3, dev, "-> stop_monitor\n");
1397         if (dev->monitor_running) {
1398                 DEBUGP(5, dev, "stopping monitor\n");
1399                 terminate_monitor(dev);
1400                 /* reset monitor SM */
1401                 clear_bit(IS_ATR_VALID, &dev->flags);
1402                 clear_bit(IS_ATR_PRESENT, &dev->flags);
1403         } else
1404                 DEBUGP(5, dev, "monitor already stopped\n");
1405         DEBUGP(3, dev, "<- stop_monitor\n");
1406 }
1407
1408 static int cmm_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
1409                      unsigned long arg)
1410 {
1411         struct cm4000_dev *dev = filp->private_data;
1412         unsigned int iobase = dev->p_dev->io.BasePort1;
1413         struct pcmcia_device *link;
1414         int size;
1415         int rc;
1416         void __user *argp = (void __user *)arg;
1417 #ifdef PCMCIA_DEBUG
1418         char *ioctl_names[CM_IOC_MAXNR + 1] = {
1419                 [_IOC_NR(CM_IOCGSTATUS)] "CM_IOCGSTATUS",
1420                 [_IOC_NR(CM_IOCGATR)] "CM_IOCGATR",
1421                 [_IOC_NR(CM_IOCARDOFF)] "CM_IOCARDOFF",
1422                 [_IOC_NR(CM_IOCSPTS)] "CM_IOCSPTS",
1423                 [_IOC_NR(CM_IOSDBGLVL)] "CM4000_DBGLVL",
1424         };
1425 #endif
1426         DEBUGP(3, dev, "cmm_ioctl(device=%d.%d) %s\n", imajor(inode),
1427                iminor(inode), ioctl_names[_IOC_NR(cmd)]);
1428
1429         link = dev_table[iminor(inode)];
1430         if (!pcmcia_dev_present(link)) {
1431                 DEBUGP(4, dev, "DEV_OK false\n");
1432                 return -ENODEV;
1433         }
1434
1435         if (test_bit(IS_CMM_ABSENT, &dev->flags)) {
1436                 DEBUGP(4, dev, "CMM_ABSENT flag set\n");
1437                 return -ENODEV;
1438         }
1439
1440         if (_IOC_TYPE(cmd) != CM_IOC_MAGIC) {
1441                 DEBUGP(4, dev, "ioctype mismatch\n");
1442                 return -EINVAL;
1443         }
1444         if (_IOC_NR(cmd) > CM_IOC_MAXNR) {
1445                 DEBUGP(4, dev, "iocnr mismatch\n");
1446                 return -EINVAL;
1447         }
1448         size = _IOC_SIZE(cmd);
1449         rc = 0;
1450         DEBUGP(4, dev, "iocdir=%.4x iocr=%.4x iocw=%.4x iocsize=%d cmd=%.4x\n",
1451               _IOC_DIR(cmd), _IOC_READ, _IOC_WRITE, size, cmd);
1452
1453         if (_IOC_DIR(cmd) & _IOC_READ) {
1454                 if (!access_ok(VERIFY_WRITE, argp, size))
1455                         return -EFAULT;
1456         }
1457         if (_IOC_DIR(cmd) & _IOC_WRITE) {
1458                 if (!access_ok(VERIFY_READ, argp, size))
1459                         return -EFAULT;
1460         }
1461
1462         switch (cmd) {
1463         case CM_IOCGSTATUS:
1464                 DEBUGP(4, dev, " ... in CM_IOCGSTATUS\n");
1465                 {
1466                         int status;
1467
1468                         /* clear other bits, but leave inserted & powered as
1469                          * they are */
1470                         status = dev->flags0 & 3;
1471                         if (test_bit(IS_ATR_PRESENT, &dev->flags))
1472                                 status |= CM_ATR_PRESENT;
1473                         if (test_bit(IS_ATR_VALID, &dev->flags))
1474                                 status |= CM_ATR_VALID;
1475                         if (test_bit(IS_CMM_ABSENT, &dev->flags))
1476                                 status |= CM_NO_READER;
1477                         if (test_bit(IS_BAD_CARD, &dev->flags))
1478                                 status |= CM_BAD_CARD;
1479                         if (copy_to_user(argp, &status, sizeof(int)))
1480                                 return -EFAULT;
1481                 }
1482                 return 0;
1483         case CM_IOCGATR:
1484                 DEBUGP(4, dev, "... in CM_IOCGATR\n");
1485                 {
1486                         struct atreq __user *atreq = argp;
1487                         int tmp;
1488                         /* allow nonblocking io and being interrupted */
1489                         if (wait_event_interruptible
1490                             (dev->atrq,
1491                              ((filp->f_flags & O_NONBLOCK)
1492                               || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags)
1493                                   != 0)))) {
1494                                 if (filp->f_flags & O_NONBLOCK)
1495                                         return -EAGAIN;
1496                                 return -ERESTARTSYS;
1497                         }
1498
1499                         if (test_bit(IS_ATR_VALID, &dev->flags) == 0) {
1500                                 tmp = -1;
1501                                 if (copy_to_user(&(atreq->atr_len), &tmp,
1502                                                  sizeof(int)))
1503                                         return -EFAULT;
1504                         } else {
1505                                 if (copy_to_user(atreq->atr, dev->atr,
1506                                                  dev->atr_len))
1507                                         return -EFAULT;
1508
1509                                 tmp = dev->atr_len;
1510                                 if (copy_to_user(&(atreq->atr_len), &tmp, sizeof(int)))
1511                                         return -EFAULT;
1512                         }
1513                         return 0;
1514                 }
1515         case CM_IOCARDOFF:
1516
1517 #ifdef PCMCIA_DEBUG
1518                 DEBUGP(4, dev, "... in CM_IOCARDOFF\n");
1519                 if (dev->flags0 & 0x01) {
1520                         DEBUGP(4, dev, "    Card inserted\n");
1521                 } else {
1522                         DEBUGP(2, dev, "    No card inserted\n");
1523                 }
1524                 if (dev->flags0 & 0x02) {
1525                         DEBUGP(4, dev, "    Card powered\n");
1526                 } else {
1527                         DEBUGP(2, dev, "    Card not powered\n");
1528                 }
1529 #endif
1530
1531                 /* is a card inserted and powered? */
1532                 if ((dev->flags0 & 0x01) && (dev->flags0 & 0x02)) {
1533
1534                         /* get IO lock */
1535                         if (wait_event_interruptible
1536                             (dev->ioq,
1537                              ((filp->f_flags & O_NONBLOCK)
1538                               || (test_and_set_bit(LOCK_IO, (void *)&dev->flags)
1539                                   == 0)))) {
1540                                 if (filp->f_flags & O_NONBLOCK)
1541                                         return -EAGAIN;
1542                                 return -ERESTARTSYS;
1543                         }
1544                         /* Set Flags0 = 0x42 */
1545                         DEBUGP(4, dev, "Set Flags0=0x42 \n");
1546                         xoutb(0x42, REG_FLAGS0(iobase));
1547                         clear_bit(IS_ATR_PRESENT, &dev->flags);
1548                         clear_bit(IS_ATR_VALID, &dev->flags);
1549                         dev->mstate = M_CARDOFF;
1550                         clear_bit(LOCK_IO, &dev->flags);
1551                         if (wait_event_interruptible
1552                             (dev->atrq,
1553                              ((filp->f_flags & O_NONBLOCK)
1554                               || (test_bit(IS_ATR_VALID, (void *)&dev->flags) !=
1555                                   0)))) {
1556                                 if (filp->f_flags & O_NONBLOCK)
1557                                         return -EAGAIN;
1558                                 return -ERESTARTSYS;
1559                         }
1560                 }
1561                 /* release lock */
1562                 clear_bit(LOCK_IO, &dev->flags);
1563                 wake_up_interruptible(&dev->ioq);
1564
1565                 return 0;
1566         case CM_IOCSPTS:
1567                 {
1568                         struct ptsreq krnptsreq;
1569
1570                         if (copy_from_user(&krnptsreq, argp,
1571                                            sizeof(struct ptsreq)))
1572                                 return -EFAULT;
1573
1574                         rc = 0;
1575                         DEBUGP(4, dev, "... in CM_IOCSPTS\n");
1576                         /* wait for ATR to get valid */
1577                         if (wait_event_interruptible
1578                             (dev->atrq,
1579                              ((filp->f_flags & O_NONBLOCK)
1580                               || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags)
1581                                   != 0)))) {
1582                                 if (filp->f_flags & O_NONBLOCK)
1583                                         return -EAGAIN;
1584                                 return -ERESTARTSYS;
1585                         }
1586                         /* get IO lock */
1587                         if (wait_event_interruptible
1588                             (dev->ioq,
1589                              ((filp->f_flags & O_NONBLOCK)
1590                               || (test_and_set_bit(LOCK_IO, (void *)&dev->flags)
1591                                   == 0)))) {
1592                                 if (filp->f_flags & O_NONBLOCK)
1593                                         return -EAGAIN;
1594                                 return -ERESTARTSYS;
1595                         }
1596
1597                         if ((rc = set_protocol(dev, &krnptsreq)) != 0) {
1598                                 /* auto power_on again */
1599                                 dev->mstate = M_FETCH_ATR;
1600                                 clear_bit(IS_ATR_VALID, &dev->flags);
1601                         }
1602                         /* release lock */
1603                         clear_bit(LOCK_IO, &dev->flags);
1604                         wake_up_interruptible(&dev->ioq);
1605
1606                 }
1607                 return rc;
1608 #ifdef PCMCIA_DEBUG
1609         case CM_IOSDBGLVL:      /* set debug log level */
1610                 {
1611                         int old_pc_debug = 0;
1612
1613                         old_pc_debug = pc_debug;
1614                         if (copy_from_user(&pc_debug, argp, sizeof(int)))
1615                                 return -EFAULT;
1616
1617                         if (old_pc_debug != pc_debug)
1618                                 DEBUGP(0, dev, "Changed debug log level "
1619                                        "to %i\n", pc_debug);
1620                 }
1621                 return rc;
1622 #endif
1623         default:
1624                 DEBUGP(4, dev, "... in default (unknown IOCTL code)\n");
1625                 return -EINVAL;
1626         }
1627 }
1628
1629 static int cmm_open(struct inode *inode, struct file *filp)
1630 {
1631         struct cm4000_dev *dev;
1632         struct pcmcia_device *link;
1633         int minor = iminor(inode);
1634
1635         if (minor >= CM4000_MAX_DEV)
1636                 return -ENODEV;
1637
1638         link = dev_table[minor];
1639         if (link == NULL || !pcmcia_dev_present(link))
1640                 return -ENODEV;
1641
1642         if (link->open)
1643                 return -EBUSY;
1644
1645         dev = link->priv;
1646         filp->private_data = dev;
1647
1648         DEBUGP(2, dev, "-> cmm_open(device=%d.%d process=%s,%d)\n",
1649               imajor(inode), minor, current->comm, current->pid);
1650
1651         /* init device variables, they may be "polluted" after close
1652          * or, the device may never have been closed (i.e. open failed)
1653          */
1654
1655         ZERO_DEV(dev);
1656
1657         /* opening will always block since the
1658          * monitor will be started by open, which
1659          * means we have to wait for ATR becoming
1660          * vaild = block until valid (or card
1661          * inserted)
1662          */
1663         if (filp->f_flags & O_NONBLOCK)
1664                 return -EAGAIN;
1665
1666         dev->mdelay = T_50MSEC;
1667
1668         /* start monitoring the cardstatus */
1669         start_monitor(dev);
1670
1671         link->open = 1;         /* only one open per device */
1672
1673         DEBUGP(2, dev, "<- cmm_open\n");
1674         return nonseekable_open(inode, filp);
1675 }
1676
1677 static int cmm_close(struct inode *inode, struct file *filp)
1678 {
1679         struct cm4000_dev *dev;
1680         struct pcmcia_device *link;
1681         int minor = iminor(inode);
1682
1683         if (minor >= CM4000_MAX_DEV)
1684                 return -ENODEV;
1685
1686         link = dev_table[minor];
1687         if (link == NULL)
1688                 return -ENODEV;
1689
1690         dev = link->priv;
1691
1692         DEBUGP(2, dev, "-> cmm_close(maj/min=%d.%d)\n",
1693                imajor(inode), minor);
1694
1695         stop_monitor(dev);
1696
1697         ZERO_DEV(dev);
1698
1699         link->open = 0;         /* only one open per device */
1700         wake_up(&dev->devq);    /* socket removed? */
1701
1702         DEBUGP(2, dev, "cmm_close\n");
1703         return 0;
1704 }
1705
1706 static void cmm_cm4000_release(struct pcmcia_device * link)
1707 {
1708         struct cm4000_dev *dev = link->priv;
1709
1710         /* dont terminate the monitor, rather rely on
1711          * close doing that for us.
1712          */
1713         DEBUGP(3, dev, "-> cmm_cm4000_release\n");
1714         while (link->open) {
1715                 printk(KERN_INFO MODULE_NAME ": delaying release until "
1716                        "process has terminated\n");
1717                 /* note: don't interrupt us:
1718                  * close the applications which own
1719                  * the devices _first_ !
1720                  */
1721                 wait_event(dev->devq, (link->open == 0));
1722         }
1723         /* dev->devq=NULL;      this cannot be zeroed earlier */
1724         DEBUGP(3, dev, "<- cmm_cm4000_release\n");
1725         return;
1726 }
1727
1728 /*==== Interface to PCMCIA Layer =======================================*/
1729
1730 static int cm4000_config(struct pcmcia_device * link, int devno)
1731 {
1732         struct cm4000_dev *dev;
1733         tuple_t tuple;
1734         cisparse_t parse;
1735         u_char buf[64];
1736         int fail_fn, fail_rc;
1737         int rc;
1738
1739         /* read the config-tuples */
1740         tuple.Attributes = 0;
1741         tuple.TupleData = buf;
1742         tuple.TupleDataMax = sizeof(buf);
1743         tuple.TupleOffset = 0;
1744
1745         link->io.BasePort2 = 0;
1746         link->io.NumPorts2 = 0;
1747         link->io.Attributes2 = 0;
1748         tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
1749         for (rc = pcmcia_get_first_tuple(link, &tuple);
1750              rc == CS_SUCCESS; rc = pcmcia_get_next_tuple(link, &tuple)) {
1751
1752                 rc = pcmcia_get_tuple_data(link, &tuple);
1753                 if (rc != CS_SUCCESS)
1754                         continue;
1755                 rc = pcmcia_parse_tuple(link, &tuple, &parse);
1756                 if (rc != CS_SUCCESS)
1757                         continue;
1758
1759                 link->conf.ConfigIndex = parse.cftable_entry.index;
1760
1761                 if (!parse.cftable_entry.io.nwin)
1762                         continue;
1763
1764                 /* Get the IOaddr */
1765                 link->io.BasePort1 = parse.cftable_entry.io.win[0].base;
1766                 link->io.NumPorts1 = parse.cftable_entry.io.win[0].len;
1767                 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
1768                 if (!(parse.cftable_entry.io.flags & CISTPL_IO_8BIT))
1769                         link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
1770                 if (!(parse.cftable_entry.io.flags & CISTPL_IO_16BIT))
1771                         link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
1772                 link->io.IOAddrLines = parse.cftable_entry.io.flags
1773                     & CISTPL_IO_LINES_MASK;
1774
1775                 rc = pcmcia_request_io(link, &link->io);
1776                 if (rc == CS_SUCCESS)
1777                         break;  /* we are done */
1778         }
1779         if (rc != CS_SUCCESS)
1780                 goto cs_release;
1781
1782         link->conf.IntType = 00000002;
1783
1784         if ((fail_rc =
1785              pcmcia_request_configuration(link, &link->conf)) != CS_SUCCESS) {
1786                 fail_fn = RequestConfiguration;
1787                 goto cs_release;
1788         }
1789
1790         dev = link->priv;
1791         sprintf(dev->node.dev_name, DEVICE_NAME "%d", devno);
1792         dev->node.major = major;
1793         dev->node.minor = devno;
1794         dev->node.next = NULL;
1795         link->dev_node = &dev->node;
1796
1797         return 0;
1798
1799 cs_release:
1800         cm4000_release(link);
1801         return -ENODEV;
1802 }
1803
1804 static int cm4000_suspend(struct pcmcia_device *link)
1805 {
1806         struct cm4000_dev *dev;
1807
1808         dev = link->priv;
1809         stop_monitor(dev);
1810
1811         return 0;
1812 }
1813
1814 static int cm4000_resume(struct pcmcia_device *link)
1815 {
1816         struct cm4000_dev *dev;
1817
1818         dev = link->priv;
1819         if (link->open)
1820                 start_monitor(dev);
1821
1822         return 0;
1823 }
1824
1825 static void cm4000_release(struct pcmcia_device *link)
1826 {
1827         cmm_cm4000_release(link);       /* delay release until device closed */
1828         pcmcia_disable_device(link);
1829 }
1830
1831 static int cm4000_probe(struct pcmcia_device *link)
1832 {
1833         struct cm4000_dev *dev;
1834         int i, ret;
1835
1836         for (i = 0; i < CM4000_MAX_DEV; i++)
1837                 if (dev_table[i] == NULL)
1838                         break;
1839
1840         if (i == CM4000_MAX_DEV) {
1841                 printk(KERN_NOTICE MODULE_NAME ": all devices in use\n");
1842                 return -ENODEV;
1843         }
1844
1845         /* create a new cm4000_cs device */
1846         dev = kzalloc(sizeof(struct cm4000_dev), GFP_KERNEL);
1847         if (dev == NULL)
1848                 return -ENOMEM;
1849
1850         dev->p_dev = link;
1851         link->priv = dev;
1852         link->conf.IntType = INT_MEMORY_AND_IO;
1853         dev_table[i] = link;
1854
1855         init_waitqueue_head(&dev->devq);
1856         init_waitqueue_head(&dev->ioq);
1857         init_waitqueue_head(&dev->atrq);
1858         init_waitqueue_head(&dev->readq);
1859
1860         ret = cm4000_config(link, i);
1861         if (ret) {
1862                 dev_table[i] = NULL;
1863                 kfree(dev);
1864                 return ret;
1865         }
1866
1867         device_create(cmm_class, NULL, MKDEV(major, i), "cmm%d", i);
1868
1869         return 0;
1870 }
1871
1872 static void cm4000_detach(struct pcmcia_device *link)
1873 {
1874         struct cm4000_dev *dev = link->priv;
1875         int devno;
1876
1877         /* find device */
1878         for (devno = 0; devno < CM4000_MAX_DEV; devno++)
1879                 if (dev_table[devno] == link)
1880                         break;
1881         if (devno == CM4000_MAX_DEV)
1882                 return;
1883
1884         stop_monitor(dev);
1885
1886         cm4000_release(link);
1887
1888         dev_table[devno] = NULL;
1889         kfree(dev);
1890
1891         device_destroy(cmm_class, MKDEV(major, devno));
1892
1893         return;
1894 }
1895
1896 static const struct file_operations cm4000_fops = {
1897         .owner  = THIS_MODULE,
1898         .read   = cmm_read,
1899         .write  = cmm_write,
1900         .ioctl  = cmm_ioctl,
1901         .open   = cmm_open,
1902         .release= cmm_close,
1903 };
1904
1905 static struct pcmcia_device_id cm4000_ids[] = {
1906         PCMCIA_DEVICE_MANF_CARD(0x0223, 0x0002),
1907         PCMCIA_DEVICE_PROD_ID12("CardMan", "4000", 0x2FB368CA, 0xA2BD8C39),
1908         PCMCIA_DEVICE_NULL,
1909 };
1910 MODULE_DEVICE_TABLE(pcmcia, cm4000_ids);
1911
1912 static struct pcmcia_driver cm4000_driver = {
1913         .owner    = THIS_MODULE,
1914         .drv      = {
1915                 .name = "cm4000_cs",
1916                 },
1917         .probe    = cm4000_probe,
1918         .remove   = cm4000_detach,
1919         .suspend  = cm4000_suspend,
1920         .resume   = cm4000_resume,
1921         .id_table = cm4000_ids,
1922 };
1923
1924 static int __init cmm_init(void)
1925 {
1926         int rc;
1927
1928         printk(KERN_INFO "%s\n", version);
1929
1930         cmm_class = class_create(THIS_MODULE, "cardman_4000");
1931         if (IS_ERR(cmm_class))
1932                 return PTR_ERR(cmm_class);
1933
1934         major = register_chrdev(0, DEVICE_NAME, &cm4000_fops);
1935         if (major < 0) {
1936                 printk(KERN_WARNING MODULE_NAME
1937                         ": could not get major number\n");
1938                 class_destroy(cmm_class);
1939                 return major;
1940         }
1941
1942         rc = pcmcia_register_driver(&cm4000_driver);
1943         if (rc < 0) {
1944                 unregister_chrdev(major, DEVICE_NAME);
1945                 class_destroy(cmm_class);
1946                 return rc;
1947         }
1948
1949         return 0;
1950 }
1951
1952 static void __exit cmm_exit(void)
1953 {
1954         printk(KERN_INFO MODULE_NAME ": unloading\n");
1955         pcmcia_unregister_driver(&cm4000_driver);
1956         unregister_chrdev(major, DEVICE_NAME);
1957         class_destroy(cmm_class);
1958 };
1959
1960 module_init(cmm_init);
1961 module_exit(cmm_exit);
1962 MODULE_LICENSE("Dual BSD/GPL");