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 #include <linux/kernel.h>
  27 #include <linux/module.h>
  28 #include <linux/slab.h>
  29 #include <linux/init.h>
  30 #include <linux/fs.h>
  31 #include <linux/delay.h>
  32 #include <linux/bitrev.h>
  33 #include <linux/smp_lock.h>
  34 #include <linux/uaccess.h>
  35 #include <linux/io.h>
  36
  37 #include <pcmcia/cs_types.h>
  38 #include <pcmcia/cs.h>
  39 #include <pcmcia/cistpl.h>
  40 #include <pcmcia/cisreg.h>
  41 #include <pcmcia/ciscode.h>
  42 #include <pcmcia/ds.h>
  43
  44 #include <linux/cm4000_cs.h>
  45
  46 /* #define ATR_CSUM */
  47
  48 #define reader_to_dev(x)        (&x->p_dev->dev)
  49
  50 /* n (debug level) is ignored */
  51 /* additional debug output may be enabled by re-compiling with
  52  * CM4000_DEBUG set */
  53 /* #define CM4000_DEBUG */
  54 #define DEBUGP(n, rdr, x, args...) do {                 \
  55                 dev_dbg(reader_to_dev(rdr), "%s:" x,    \
  56                            __func__ , ## args);         \
  57         } while (0)
  58
  59 static char *version = "cm4000_cs.c v2.4.0gm6 - 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_release(struct pcmcia_device *link);
  70
  71 static int major;               /* major number we get from the kernel */
  72
  73 /* note: the first state has to have number 0 always */
  74
  75 #define M_FETCH_ATR     0
  76 #define M_TIMEOUT_WAIT  1
  77 #define M_READ_ATR_LEN  2
  78 #define M_READ_ATR      3
  79 #define M_ATR_PRESENT   4
  80 #define M_BAD_CARD      5
  81 #define M_CARDOFF       6
  82
  83 #define LOCK_IO                 0
  84 #define LOCK_MONITOR            1
  85
  86 #define IS_AUTOPPS_ACT           6
  87 #define IS_PROCBYTE_PRESENT      7
  88 #define IS_INVREV                8
  89 #define IS_ANY_T0                9
  90 #define IS_ANY_T1               10
  91 #define IS_ATR_PRESENT          11
  92 #define IS_ATR_VALID            12
  93 #define IS_CMM_ABSENT           13
  94 #define IS_BAD_LENGTH           14
  95 #define IS_BAD_CSUM             15
  96 #define IS_BAD_CARD             16
  97
  98 #define REG_FLAGS0(x)           (x + 0)
  99 #define REG_FLAGS1(x)           (x + 1)
 100 #define REG_NUM_BYTES(x)        (x + 2)
 101 #define REG_BUF_ADDR(x)         (x + 3)
 102 #define REG_BUF_DATA(x)         (x + 4)
 103 #define REG_NUM_SEND(x)         (x + 5)
 104 #define REG_BAUDRATE(x)         (x + 6)
 105 #define REG_STOPBITS(x)         (x + 7)
 106
 107 struct cm4000_dev {
 108         struct pcmcia_device *p_dev;
 109         dev_node_t node;                /* OS node (major,minor) */
 110
 111         unsigned char atr[MAX_ATR];
 112         unsigned char rbuf[512];
 113         unsigned char sbuf[512];
 114
 115         wait_queue_head_t devq;         /* when removing cardman must not be
 116                                            zeroed! */
 117
 118         wait_queue_head_t ioq;          /* if IO is locked, wait on this Q */
 119         wait_queue_head_t atrq;         /* wait for ATR valid */
 120         wait_queue_head_t readq;        /* used by write to wake blk.read */
 121
 122         /* warning: do not move this fields.
 123          * initialising to zero depends on it - see ZERO_DEV below.  */
 124         unsigned char atr_csum;
 125         unsigned char atr_len_retry;
 126         unsigned short atr_len;
 127         unsigned short rlen;    /* bytes avail. after write */
 128         unsigned short rpos;    /* latest read pos. write zeroes */
 129         unsigned char procbyte; /* T=0 procedure byte */
 130         unsigned char mstate;   /* state of card monitor */
 131         unsigned char cwarn;    /* slow down warning */
 132         unsigned char flags0;   /* cardman IO-flags 0 */
 133         unsigned char flags1;   /* cardman IO-flags 1 */
 134         unsigned int mdelay;    /* variable monitor speeds, in jiffies */
 135
 136         unsigned int baudv;     /* baud value for speed */
 137         unsigned char ta1;
 138         unsigned char proto;    /* T=0, T=1, ... */
 139         unsigned long flags;    /* lock+flags (MONITOR,IO,ATR) * for concurrent
 140                                    access */
 141
 142         unsigned char pts[4];
 143
 144         struct timer_list timer;        /* used to keep monitor running */
 145         int monitor_running;
 146 };
 147
 148 #define ZERO_DEV(dev)                                           \
 149         memset(&dev->atr_csum,0,                                \
 150                 sizeof(struct cm4000_dev) -                     \
 151                 offsetof(struct cm4000_dev, atr_csum))
 152
 153 static struct pcmcia_device *dev_table[CM4000_MAX_DEV];
 154 static struct class *cmm_class;
 155
 156 /* This table doesn't use spaces after the comma between fields and thus
 157  * violates CodingStyle.  However, I don't really think wrapping it around will
 158  * make it any clearer to read -HW */
 159 static unsigned char fi_di_table[10][14] = {
 160 /*FI     00   01   02   03   04   05   06   07   08   09   10   11   12   13 */
 161 /*DI */
 162 /* 0 */ {0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11},
 163 /* 1 */ {0x01,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x91,0x11,0x11,0x11,0x11},
 164 /* 2 */ {0x02,0x12,0x22,0x32,0x11,0x11,0x11,0x11,0x11,0x92,0xA2,0xB2,0x11,0x11},
 165 /* 3 */ {0x03,0x13,0x23,0x33,0x43,0x53,0x63,0x11,0x11,0x93,0xA3,0xB3,0xC3,0xD3},
 166 /* 4 */ {0x04,0x14,0x24,0x34,0x44,0x54,0x64,0x11,0x11,0x94,0xA4,0xB4,0xC4,0xD4},
 167 /* 5 */ {0x00,0x15,0x25,0x35,0x45,0x55,0x65,0x11,0x11,0x95,0xA5,0xB5,0xC5,0xD5},
 168 /* 6 */ {0x06,0x16,0x26,0x36,0x46,0x56,0x66,0x11,0x11,0x96,0xA6,0xB6,0xC6,0xD6},
 169 /* 7 */ {0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11},
 170 /* 8 */ {0x08,0x11,0x28,0x38,0x48,0x58,0x68,0x11,0x11,0x98,0xA8,0xB8,0xC8,0xD8},
 171 /* 9 */ {0x09,0x19,0x29,0x39,0x49,0x59,0x69,0x11,0x11,0x99,0xA9,0xB9,0xC9,0xD9}
 172 };
 173
 174 #ifndef CM4000_DEBUG
 175 #define xoutb   outb
 176 #define xinb    inb
 177 #else
 178 static inline void xoutb(unsigned char val, unsigned short port)
 179 {
 180         pr_debug("outb(val=%.2x,port=%.4x)\n", val, port);
 181         outb(val, port);
 182 }
 183 static inline unsigned char xinb(unsigned short port)
 184 {
 185         unsigned char val;
 186
 187         val = inb(port);
 188         pr_debug("%.2x=inb(%.4x)\n", val, port);
 189
 190         return val;
 191 }
 192 #endif
 193
 194 static inline unsigned char invert_revert(unsigned char ch)
 195 {
 196         return bitrev8(~ch);
 197 }
 198
 199 static void str_invert_revert(unsigned char *b, int len)
 200 {
 201         int i;
 202
 203         for (i = 0; i < len; i++)
 204                 b[i] = invert_revert(b[i]);
 205 }
 206
 207 #define ATRLENCK(dev,pos) \
 208         if (pos>=dev->atr_len || pos>=MAX_ATR) \
 209                 goto return_0;
 210
 211 static unsigned int calc_baudv(unsigned char fidi)
 212 {
 213         unsigned int wcrcf, wbrcf, fi_rfu, di_rfu;
 214
 215         fi_rfu = 372;
 216         di_rfu = 1;
 217
 218         /* FI */
 219         switch ((fidi >> 4) & 0x0F) {
 220         case 0x00:
 221                 wcrcf = 372;
 222                 break;
 223         case 0x01:
 224                 wcrcf = 372;
 225                 break;
 226         case 0x02:
 227                 wcrcf = 558;
 228                 break;
 229         case 0x03:
 230                 wcrcf = 744;
 231                 break;
 232         case 0x04:
 233                 wcrcf = 1116;
 234                 break;
 235         case 0x05:
 236                 wcrcf = 1488;
 237                 break;
 238         case 0x06:
 239                 wcrcf = 1860;
 240                 break;
 241         case 0x07:
 242                 wcrcf = fi_rfu;
 243                 break;
 244         case 0x08:
 245                 wcrcf = fi_rfu;
 246                 break;
 247         case 0x09:
 248                 wcrcf = 512;
 249                 break;
 250         case 0x0A:
 251                 wcrcf = 768;
 252                 break;
 253         case 0x0B:
 254                 wcrcf = 1024;
 255                 break;
 256         case 0x0C:
 257                 wcrcf = 1536;
 258                 break;
 259         case 0x0D:
 260                 wcrcf = 2048;
 261                 break;
 262         default:
 263                 wcrcf = fi_rfu;
 264                 break;
 265         }
 266
 267         /* DI */
 268         switch (fidi & 0x0F) {
 269         case 0x00:
 270                 wbrcf = di_rfu;
 271                 break;
 272         case 0x01:
 273                 wbrcf = 1;
 274                 break;
 275         case 0x02:
 276                 wbrcf = 2;
 277                 break;
 278         case 0x03:
 279                 wbrcf = 4;
 280                 break;
 281         case 0x04:
 282                 wbrcf = 8;
 283                 break;
 284         case 0x05:
 285                 wbrcf = 16;
 286                 break;
 287         case 0x06:
 288                 wbrcf = 32;
 289                 break;
 290         case 0x07:
 291                 wbrcf = di_rfu;
 292                 break;
 293         case 0x08:
 294                 wbrcf = 12;
 295                 break;
 296         case 0x09:
 297                 wbrcf = 20;
 298                 break;
 299         default:
 300                 wbrcf = di_rfu;
 301                 break;
 302         }
 303
 304         return (wcrcf / wbrcf);
 305 }
 306
 307 static unsigned short io_read_num_rec_bytes(unsigned int iobase,
 308                                             unsigned short *s)
 309 {
 310         unsigned short tmp;
 311
 312         tmp = *s = 0;
 313         do {
 314                 *s = tmp;
 315                 tmp = inb(REG_NUM_BYTES(iobase)) |
 316                                 (inb(REG_FLAGS0(iobase)) & 4 ? 0x100 : 0);
 317         } while (tmp != *s);
 318
 319         return *s;
 320 }
 321
 322 static int parse_atr(struct cm4000_dev *dev)
 323 {
 324         unsigned char any_t1, any_t0;
 325         unsigned char ch, ifno;
 326         int ix, done;
 327
 328         DEBUGP(3, dev, "-> parse_atr: dev->atr_len = %i\n", dev->atr_len);
 329
 330         if (dev->atr_len < 3) {
 331                 DEBUGP(5, dev, "parse_atr: atr_len < 3\n");
 332                 return 0;
 333         }
 334
 335         if (dev->atr[0] == 0x3f)
 336                 set_bit(IS_INVREV, &dev->flags);
 337         else
 338                 clear_bit(IS_INVREV, &dev->flags);
 339         ix = 1;
 340         ifno = 1;
 341         ch = dev->atr[1];
 342         dev->proto = 0;         /* XXX PROTO */
 343         any_t1 = any_t0 = done = 0;
 344         dev->ta1 = 0x11;        /* defaults to 9600 baud */
 345         do {
 346                 if (ifno == 1 && (ch & 0x10)) {
 347                         /* read first interface byte and TA1 is present */
 348                         dev->ta1 = dev->atr[2];
 349                         DEBUGP(5, dev, "Card says FiDi is 0x%.2x\n", dev->ta1);
 350                         ifno++;
 351                 } else if ((ifno == 2) && (ch & 0x10)) { /* TA(2) */
 352                         dev->ta1 = 0x11;
 353                         ifno++;
 354                 }
 355
 356                 DEBUGP(5, dev, "Yi=%.2x\n", ch & 0xf0);
 357                 ix += ((ch & 0x10) >> 4)        /* no of int.face chars */
 358                     +((ch & 0x20) >> 5)
 359                     + ((ch & 0x40) >> 6)
 360                     + ((ch & 0x80) >> 7);
 361                 /* ATRLENCK(dev,ix); */
 362                 if (ch & 0x80) {        /* TDi */
 363                         ch = dev->atr[ix];
 364                         if ((ch & 0x0f)) {
 365                                 any_t1 = 1;
 366                                 DEBUGP(5, dev, "card is capable of T=1\n");
 367                         } else {
 368                                 any_t0 = 1;
 369                                 DEBUGP(5, dev, "card is capable of T=0\n");
 370                         }
 371                 } else
 372                         done = 1;
 373         } while (!done);
 374
 375         DEBUGP(5, dev, "ix=%d noHist=%d any_t1=%d\n",
 376               ix, dev->atr[1] & 15, any_t1);
 377         if (ix + 1 + (dev->atr[1] & 0x0f) + any_t1 != dev->atr_len) {
 378                 DEBUGP(5, dev, "length error\n");
 379                 return 0;
 380         }
 381         if (any_t0)
 382                 set_bit(IS_ANY_T0, &dev->flags);
 383
 384         if (any_t1) {           /* compute csum */
 385                 dev->atr_csum = 0;
 386 #ifdef ATR_CSUM
 387                 for (i = 1; i < dev->atr_len; i++)
 388                         dev->atr_csum ^= dev->atr[i];
 389                 if (dev->atr_csum) {
 390                         set_bit(IS_BAD_CSUM, &dev->flags);
 391                         DEBUGP(5, dev, "bad checksum\n");
 392                         goto return_0;
 393                 }
 394 #endif
 395                 if (any_t0 == 0)
 396                         dev->proto = 1; /* XXX PROTO */
 397                 set_bit(IS_ANY_T1, &dev->flags);
 398         }
 399
 400         return 1;
 401 }
 402
 403 struct card_fixup {
 404         char atr[12];
 405         u_int8_t atr_len;
 406         u_int8_t stopbits;
 407 };
 408
 409 static struct card_fixup card_fixups[] = {
 410         {       /* ACOS */
 411                 .atr = { 0x3b, 0xb3, 0x11, 0x00, 0x00, 0x41, 0x01 },
 412                 .atr_len = 7,
 413                 .stopbits = 0x03,
 414         },
 415         {       /* Motorola */
 416                 .atr = {0x3b, 0x76, 0x13, 0x00, 0x00, 0x80, 0x62, 0x07,
 417                         0x41, 0x81, 0x81 },
 418                 .atr_len = 11,
 419                 .stopbits = 0x04,
 420         },
 421 };
 422
 423 static void set_cardparameter(struct cm4000_dev *dev)
 424 {
 425         int i;
 426         unsigned int iobase = dev->p_dev->io.BasePort1;
 427         u_int8_t stopbits = 0x02; /* ISO default */
 428
 429         DEBUGP(3, dev, "-> set_cardparameter\n");
 430
 431         dev->flags1 = dev->flags1 | (((dev->baudv - 1) & 0x0100) >> 8);
 432         xoutb(dev->flags1, REG_FLAGS1(iobase));
 433         DEBUGP(5, dev, "flags1 = 0x%02x\n", dev->flags1);
 434
 435         /* set baudrate */
 436         xoutb((unsigned char)((dev->baudv - 1) & 0xFF), REG_BAUDRATE(iobase));
 437
 438         DEBUGP(5, dev, "baudv = %i -> write 0x%02x\n", dev->baudv,
 439               ((dev->baudv - 1) & 0xFF));
 440
 441         /* set stopbits */
 442         for (i = 0; i < ARRAY_SIZE(card_fixups); i++) {
 443                 if (!memcmp(dev->atr, card_fixups[i].atr,
 444                             card_fixups[i].atr_len))
 445                         stopbits = card_fixups[i].stopbits;
 446         }
 447         xoutb(stopbits, REG_STOPBITS(iobase));
 448
 449         DEBUGP(3, dev, "<- set_cardparameter\n");
 450 }
 451
 452 static int set_protocol(struct cm4000_dev *dev, struct ptsreq *ptsreq)
 453 {
 454
 455         unsigned long tmp, i;
 456         unsigned short num_bytes_read;
 457         unsigned char pts_reply[4];
 458         ssize_t rc;
 459         unsigned int iobase = dev->p_dev->io.BasePort1;
 460
 461         rc = 0;
 462
 463         DEBUGP(3, dev, "-> set_protocol\n");
 464         DEBUGP(5, dev, "ptsreq->Protocol = 0x%.8x, ptsreq->Flags=0x%.8x, "
 465                  "ptsreq->pts1=0x%.2x, ptsreq->pts2=0x%.2x, "
 466                  "ptsreq->pts3=0x%.2x\n", (unsigned int)ptsreq->protocol,
 467                  (unsigned int)ptsreq->flags, ptsreq->pts1, ptsreq->pts2,
 468                  ptsreq->pts3);
 469
 470         /* Fill PTS structure */
 471         dev->pts[0] = 0xff;
 472         dev->pts[1] = 0x00;
 473         tmp = ptsreq->protocol;
 474         while ((tmp = (tmp >> 1)) > 0)
 475                 dev->pts[1]++;
 476         dev->proto = dev->pts[1];       /* Set new protocol */
 477         dev->pts[1] = (0x01 << 4) | (dev->pts[1]);
 478
 479         /* Correct Fi/Di according to CM4000 Fi/Di table */
 480         DEBUGP(5, dev, "Ta(1) from ATR is 0x%.2x\n", dev->ta1);
 481         /* set Fi/Di according to ATR TA(1) */
 482         dev->pts[2] = fi_di_table[dev->ta1 & 0x0F][(dev->ta1 >> 4) & 0x0F];
 483
 484         /* Calculate PCK character */
 485         dev->pts[3] = dev->pts[0] ^ dev->pts[1] ^ dev->pts[2];
 486
 487         DEBUGP(5, dev, "pts0=%.2x, pts1=%.2x, pts2=%.2x, pts3=%.2x\n",
 488                dev->pts[0], dev->pts[1], dev->pts[2], dev->pts[3]);
 489
 490         /* check card convention */
 491         if (test_bit(IS_INVREV, &dev->flags))
 492                 str_invert_revert(dev->pts, 4);
 493
 494         /* reset SM */
 495         xoutb(0x80, REG_FLAGS0(iobase));
 496
 497         /* Enable access to the message buffer */
 498         DEBUGP(5, dev, "Enable access to the messages buffer\n");
 499         dev->flags1 = 0x20      /* T_Active */
 500             | (test_bit(IS_INVREV, &dev->flags) ? 0x02 : 0x00) /* inv parity */
 501             | ((dev->baudv >> 8) & 0x01);       /* MSB-baud */
 502         xoutb(dev->flags1, REG_FLAGS1(iobase));
 503
 504         DEBUGP(5, dev, "Enable message buffer -> flags1 = 0x%.2x\n",
 505                dev->flags1);
 506
 507         /* write challenge to the buffer */
 508         DEBUGP(5, dev, "Write challenge to buffer: ");
 509         for (i = 0; i < 4; i++) {
 510                 xoutb(i, REG_BUF_ADDR(iobase));
 511                 xoutb(dev->pts[i], REG_BUF_DATA(iobase));       /* buf data */
 512 #ifdef CM4000_DEBUG
 513                 pr_debug("0x%.2x ", dev->pts[i]);
 514         }
 515         pr_debug("\n");
 516 #else
 517         }
 518 #endif
 519
 520         /* set number of bytes to write */
 521         DEBUGP(5, dev, "Set number of bytes to write\n");
 522         xoutb(0x04, REG_NUM_SEND(iobase));
 523
 524         /* Trigger CARDMAN CONTROLLER */
 525         xoutb(0x50, REG_FLAGS0(iobase));
 526
 527         /* Monitor progress */
 528         /* wait for xmit done */
 529         DEBUGP(5, dev, "Waiting for NumRecBytes getting valid\n");
 530
 531         for (i = 0; i < 100; i++) {
 532                 if (inb(REG_FLAGS0(iobase)) & 0x08) {
 533                         DEBUGP(5, dev, "NumRecBytes is valid\n");
 534                         break;
 535                 }
 536                 mdelay(10);
 537         }
 538         if (i == 100) {
 539                 DEBUGP(5, dev, "Timeout waiting for NumRecBytes getting "
 540                        "valid\n");
 541                 rc = -EIO;
 542                 goto exit_setprotocol;
 543         }
 544
 545         DEBUGP(5, dev, "Reading NumRecBytes\n");
 546         for (i = 0; i < 100; i++) {
 547                 io_read_num_rec_bytes(iobase, &num_bytes_read);
 548                 if (num_bytes_read >= 4) {
 549                         DEBUGP(2, dev, "NumRecBytes = %i\n", num_bytes_read);
 550                         break;
 551                 }
 552                 mdelay(10);
 553         }
 554
 555         /* check whether it is a short PTS reply? */
 556         if (num_bytes_read == 3)
 557                 i = 0;
 558
 559         if (i == 100) {
 560                 DEBUGP(5, dev, "Timeout reading num_bytes_read\n");
 561                 rc = -EIO;
 562                 goto exit_setprotocol;
 563         }
 564
 565         DEBUGP(5, dev, "Reset the CARDMAN CONTROLLER\n");
 566         xoutb(0x80, REG_FLAGS0(iobase));
 567
 568         /* Read PPS reply */
 569         DEBUGP(5, dev, "Read PPS reply\n");
 570         for (i = 0; i < num_bytes_read; i++) {
 571                 xoutb(i, REG_BUF_ADDR(iobase));
 572                 pts_reply[i] = inb(REG_BUF_DATA(iobase));
 573         }
 574
 575 #ifdef CM4000_DEBUG
 576         DEBUGP(2, dev, "PTSreply: ");
 577         for (i = 0; i < num_bytes_read; i++) {
 578                 pr_debug("0x%.2x ", pts_reply[i]);
 579         }
 580         pr_debug("\n");
 581 #endif  /* CM4000_DEBUG */
 582
 583         DEBUGP(5, dev, "Clear Tactive in Flags1\n");
 584         xoutb(0x20, REG_FLAGS1(iobase));
 585
 586         /* Compare ptsreq and ptsreply */
 587         if ((dev->pts[0] == pts_reply[0]) &&
 588             (dev->pts[1] == pts_reply[1]) &&
 589             (dev->pts[2] == pts_reply[2]) && (dev->pts[3] == pts_reply[3])) {
 590                 /* setcardparameter according to PPS */
 591                 dev->baudv = calc_baudv(dev->pts[2]);
 592                 set_cardparameter(dev);
 593         } else if ((dev->pts[0] == pts_reply[0]) &&
 594                    ((dev->pts[1] & 0xef) == pts_reply[1]) &&
 595                    ((pts_reply[0] ^ pts_reply[1]) == pts_reply[2])) {
 596                 /* short PTS reply, set card parameter to default values */
 597                 dev->baudv = calc_baudv(0x11);
 598                 set_cardparameter(dev);
 599         } else
 600                 rc = -EIO;
 601
 602 exit_setprotocol:
 603         DEBUGP(3, dev, "<- set_protocol\n");
 604         return rc;
 605 }
 606
 607 static int io_detect_cm4000(unsigned int iobase, struct cm4000_dev *dev)
 608 {
 609
 610         /* note: statemachine is assumed to be reset */
 611         if (inb(REG_FLAGS0(iobase)) & 8) {
 612                 clear_bit(IS_ATR_VALID, &dev->flags);
 613                 set_bit(IS_CMM_ABSENT, &dev->flags);
 614                 return 0;       /* detect CMM = 1 -> failure */
 615         }
 616         /* xoutb(0x40, REG_FLAGS1(iobase)); detectCMM */
 617         xoutb(dev->flags1 | 0x40, REG_FLAGS1(iobase));
 618         if ((inb(REG_FLAGS0(iobase)) & 8) == 0) {
 619                 clear_bit(IS_ATR_VALID, &dev->flags);
 620                 set_bit(IS_CMM_ABSENT, &dev->flags);
 621                 return 0;       /* detect CMM=0 -> failure */
 622         }
 623         /* clear detectCMM again by restoring original flags1 */
 624         xoutb(dev->flags1, REG_FLAGS1(iobase));
 625         return 1;
 626 }
 627
 628 static void terminate_monitor(struct cm4000_dev *dev)
 629 {
 630
 631         /* tell the monitor to stop and wait until
 632          * it terminates.
 633          */
 634         DEBUGP(3, dev, "-> terminate_monitor\n");
 635         wait_event_interruptible(dev->devq,
 636                                  test_and_set_bit(LOCK_MONITOR,
 637                                                   (void *)&dev->flags));
 638
 639         /* now, LOCK_MONITOR has been set.
 640          * allow a last cycle in the monitor.
 641          * the monitor will indicate that it has
 642          * finished by clearing this bit.
 643          */
 644         DEBUGP(5, dev, "Now allow last cycle of monitor!\n");
 645         while (test_bit(LOCK_MONITOR, (void *)&dev->flags))
 646                 msleep(25);
 647
 648         DEBUGP(5, dev, "Delete timer\n");
 649         del_timer_sync(&dev->timer);
 650 #ifdef CM4000_DEBUG
 651         dev->monitor_running = 0;
 652 #endif
 653
 654         DEBUGP(3, dev, "<- terminate_monitor\n");
 655 }
 656
 657 /*
 658  * monitor the card every 50msec. as a side-effect, retrieve the
 659  * atr once a card is inserted. another side-effect of retrieving the
 660  * atr is that the card will be powered on, so there is no need to
 661  * power on the card explictely from the application: the driver
 662  * is already doing that for you.
 663  */
 664
 665 static void monitor_card(unsigned long p)
 666 {
 667         struct cm4000_dev *dev = (struct cm4000_dev *) p;
 668         unsigned int iobase = dev->p_dev->io.BasePort1;
 669         unsigned short s;
 670         struct ptsreq ptsreq;
 671         int i, atrc;
 672
 673         DEBUGP(7, dev, "->  monitor_card\n");
 674
 675         /* if someone has set the lock for us: we're done! */
 676         if (test_and_set_bit(LOCK_MONITOR, &dev->flags)) {
 677                 DEBUGP(4, dev, "About to stop monitor\n");
 678                 /* no */
 679                 dev->rlen =
 680                     dev->rpos =
 681                     dev->atr_csum = dev->atr_len_retry = dev->cwarn = 0;
 682                 dev->mstate = M_FETCH_ATR;
 683                 clear_bit(LOCK_MONITOR, &dev->flags);
 684                 /* close et al. are sleeping on devq, so wake it */
 685                 wake_up_interruptible(&dev->devq);
 686                 DEBUGP(2, dev, "<- monitor_card (we are done now)\n");
 687                 return;
 688         }
 689
 690         /* try to lock io: if it is already locked, just add another timer */
 691         if (test_and_set_bit(LOCK_IO, (void *)&dev->flags)) {
 692                 DEBUGP(4, dev, "Couldn't get IO lock\n");
 693                 goto return_with_timer;
 694         }
 695
 696         /* is a card/a reader inserted at all ? */
 697         dev->flags0 = xinb(REG_FLAGS0(iobase));
 698         DEBUGP(7, dev, "dev->flags0 = 0x%2x\n", dev->flags0);
 699         DEBUGP(7, dev, "smartcard present: %s\n",
 700                dev->flags0 & 1 ? "yes" : "no");
 701         DEBUGP(7, dev, "cardman present: %s\n",
 702                dev->flags0 == 0xff ? "no" : "yes");
 703
 704         if ((dev->flags0 & 1) == 0      /* no smartcard inserted */
 705             || dev->flags0 == 0xff) {   /* no cardman inserted */
 706                 /* no */
 707                 dev->rlen =
 708                     dev->rpos =
 709                     dev->atr_csum = dev->atr_len_retry = dev->cwarn = 0;
 710                 dev->mstate = M_FETCH_ATR;
 711
 712                 dev->flags &= 0x000000ff; /* only keep IO and MONITOR locks */
 713
 714                 if (dev->flags0 == 0xff) {
 715                         DEBUGP(4, dev, "set IS_CMM_ABSENT bit\n");
 716                         set_bit(IS_CMM_ABSENT, &dev->flags);
 717                 } else if (test_bit(IS_CMM_ABSENT, &dev->flags)) {
 718                         DEBUGP(4, dev, "clear IS_CMM_ABSENT bit "
 719                                "(card is removed)\n");
 720                         clear_bit(IS_CMM_ABSENT, &dev->flags);
 721                 }
 722
 723                 goto release_io;
 724         } else if ((dev->flags0 & 1) && test_bit(IS_CMM_ABSENT, &dev->flags)) {
 725                 /* cardman and card present but cardman was absent before
 726                  * (after suspend with inserted card) */
 727                 DEBUGP(4, dev, "clear IS_CMM_ABSENT bit (card is inserted)\n");
 728                 clear_bit(IS_CMM_ABSENT, &dev->flags);
 729         }
 730
 731         if (test_bit(IS_ATR_VALID, &dev->flags) == 1) {
 732                 DEBUGP(7, dev, "believe ATR is already valid (do nothing)\n");
 733                 goto release_io;
 734         }
 735
 736         switch (dev->mstate) {
 737                 unsigned char flags0;
 738         case M_CARDOFF:
 739                 DEBUGP(4, dev, "M_CARDOFF\n");
 740                 flags0 = inb(REG_FLAGS0(iobase));
 741                 if (flags0 & 0x02) {
 742                         /* wait until Flags0 indicate power is off */
 743                         dev->mdelay = T_10MSEC;
 744                 } else {
 745                         /* Flags0 indicate power off and no card inserted now;
 746                          * Reset CARDMAN CONTROLLER */
 747                         xoutb(0x80, REG_FLAGS0(iobase));
 748
 749                         /* prepare for fetching ATR again: after card off ATR
 750                          * is read again automatically */
 751                         dev->rlen =
 752                             dev->rpos =
 753                             dev->atr_csum =
 754                             dev->atr_len_retry = dev->cwarn = 0;
 755                         dev->mstate = M_FETCH_ATR;
 756
 757                         /* minimal gap between CARDOFF and read ATR is 50msec */
 758                         dev->mdelay = T_50MSEC;
 759                 }
 760                 break;
 761         case M_FETCH_ATR:
 762                 DEBUGP(4, dev, "M_FETCH_ATR\n");
 763                 xoutb(0x80, REG_FLAGS0(iobase));
 764                 DEBUGP(4, dev, "Reset BAUDV to 9600\n");
 765                 dev->baudv = 0x173;     /* 9600 */
 766                 xoutb(0x02, REG_STOPBITS(iobase));      /* stopbits=2 */
 767                 xoutb(0x73, REG_BAUDRATE(iobase));      /* baud value */
 768                 xoutb(0x21, REG_FLAGS1(iobase));        /* T_Active=1, baud
 769                                                            value */
 770                 /* warm start vs. power on: */
 771                 xoutb(dev->flags0 & 2 ? 0x46 : 0x44, REG_FLAGS0(iobase));
 772                 dev->mdelay = T_40MSEC;
 773                 dev->mstate = M_TIMEOUT_WAIT;
 774                 break;
 775         case M_TIMEOUT_WAIT:
 776                 DEBUGP(4, dev, "M_TIMEOUT_WAIT\n");
 777                 /* numRecBytes */
 778                 io_read_num_rec_bytes(iobase, &dev->atr_len);
 779                 dev->mdelay = T_10MSEC;
 780                 dev->mstate = M_READ_ATR_LEN;
 781                 break;
 782         case M_READ_ATR_LEN:
 783                 DEBUGP(4, dev, "M_READ_ATR_LEN\n");
 784                 /* infinite loop possible, since there is no timeout */
 785
 786 #define MAX_ATR_LEN_RETRY       100
 787
 788                 if (dev->atr_len == io_read_num_rec_bytes(iobase, &s)) {
 789                         if (dev->atr_len_retry++ >= MAX_ATR_LEN_RETRY) {                                        /* + XX msec */
 790                                 dev->mdelay = T_10MSEC;
 791                                 dev->mstate = M_READ_ATR;
 792                         }
 793                 } else {
 794                         dev->atr_len = s;
 795                         dev->atr_len_retry = 0; /* set new timeout */
 796                 }
 797
 798                 DEBUGP(4, dev, "Current ATR_LEN = %i\n", dev->atr_len);
 799                 break;
 800         case M_READ_ATR:
 801                 DEBUGP(4, dev, "M_READ_ATR\n");
 802                 xoutb(0x80, REG_FLAGS0(iobase));        /* reset SM */
 803                 for (i = 0; i < dev->atr_len; i++) {
 804                         xoutb(i, REG_BUF_ADDR(iobase));
 805                         dev->atr[i] = inb(REG_BUF_DATA(iobase));
 806                 }
 807                 /* Deactivate T_Active flags */
 808                 DEBUGP(4, dev, "Deactivate T_Active flags\n");
 809                 dev->flags1 = 0x01;
 810                 xoutb(dev->flags1, REG_FLAGS1(iobase));
 811
 812                 /* atr is present (which doesnt mean it's valid) */
 813                 set_bit(IS_ATR_PRESENT, &dev->flags);
 814                 if (dev->atr[0] == 0x03)
 815                         str_invert_revert(dev->atr, dev->atr_len);
 816                 atrc = parse_atr(dev);
 817                 if (atrc == 0) {        /* atr invalid */
 818                         dev->mdelay = 0;
 819                         dev->mstate = M_BAD_CARD;
 820                 } else {
 821                         dev->mdelay = T_50MSEC;
 822                         dev->mstate = M_ATR_PRESENT;
 823                         set_bit(IS_ATR_VALID, &dev->flags);
 824                 }
 825
 826                 if (test_bit(IS_ATR_VALID, &dev->flags) == 1) {
 827                         DEBUGP(4, dev, "monitor_card: ATR valid\n");
 828                         /* if ta1 == 0x11, no PPS necessary (default values) */
 829                         /* do not do PPS with multi protocol cards */
 830                         if ((test_bit(IS_AUTOPPS_ACT, &dev->flags) == 0) &&
 831                             (dev->ta1 != 0x11) &&
 832                             !(test_bit(IS_ANY_T0, &dev->flags) &&
 833                             test_bit(IS_ANY_T1, &dev->flags))) {
 834                                 DEBUGP(4, dev, "Perform AUTOPPS\n");
 835                                 set_bit(IS_AUTOPPS_ACT, &dev->flags);
 836                                 ptsreq.protocol = ptsreq.protocol =
 837                                     (0x01 << dev->proto);
 838                                 ptsreq.flags = 0x01;
 839                                 ptsreq.pts1 = 0x00;
 840                                 ptsreq.pts2 = 0x00;
 841                                 ptsreq.pts3 = 0x00;
 842                                 if (set_protocol(dev, &ptsreq) == 0) {
 843                                         DEBUGP(4, dev, "AUTOPPS ret SUCC\n");
 844                                         clear_bit(IS_AUTOPPS_ACT, &dev->flags);
 845                                         wake_up_interruptible(&dev->atrq);
 846                                 } else {
 847                                         DEBUGP(4, dev, "AUTOPPS failed: "
 848                                                "repower using defaults\n");
 849                                         /* prepare for repowering  */
 850                                         clear_bit(IS_ATR_PRESENT, &dev->flags);
 851                                         clear_bit(IS_ATR_VALID, &dev->flags);
 852                                         dev->rlen =
 853                                             dev->rpos =
 854                                             dev->atr_csum =
 855                                             dev->atr_len_retry = dev->cwarn = 0;
 856                                         dev->mstate = M_FETCH_ATR;
 857
 858                                         dev->mdelay = T_50MSEC;
 859                                 }
 860                         } else {
 861                                 /* for cards which use slightly different
 862                                  * params (extra guard time) */
 863                                 set_cardparameter(dev);
 864                                 if (test_bit(IS_AUTOPPS_ACT, &dev->flags) == 1)
 865                                         DEBUGP(4, dev, "AUTOPPS already active "
 866                                                "2nd try:use default values\n");
 867                                 if (dev->ta1 == 0x11)
 868                                         DEBUGP(4, dev, "No AUTOPPS necessary "
 869                                                "TA(1)==0x11\n");
 870                                 if (test_bit(IS_ANY_T0, &dev->flags)
 871                                     && test_bit(IS_ANY_T1, &dev->flags))
 872                                         DEBUGP(4, dev, "Do NOT perform AUTOPPS "
 873                                                "with multiprotocol cards\n");
 874                                 clear_bit(IS_AUTOPPS_ACT, &dev->flags);
 875                                 wake_up_interruptible(&dev->atrq);
 876                         }
 877                 } else {
 878                         DEBUGP(4, dev, "ATR invalid\n");
 879                         wake_up_interruptible(&dev->atrq);
 880                 }
 881                 break;
 882         case M_BAD_CARD:
 883                 DEBUGP(4, dev, "M_BAD_CARD\n");
 884                 /* slow down warning, but prompt immediately after insertion */
 885                 if (dev->cwarn == 0 || dev->cwarn == 10) {
 886                         set_bit(IS_BAD_CARD, &dev->flags);
 887                         printk(KERN_WARNING MODULE_NAME ": device %s: ",
 888                                dev->node.dev_name);
 889                         if (test_bit(IS_BAD_CSUM, &dev->flags)) {
 890                                 DEBUGP(4, dev, "ATR checksum (0x%.2x, should "
 891                                        "be zero) failed\n", dev->atr_csum);
 892                         }
 893 #ifdef CM4000_DEBUG
 894                         else if (test_bit(IS_BAD_LENGTH, &dev->flags)) {
 895                                 DEBUGP(4, dev, "ATR length error\n");
 896                         } else {
 897                                 DEBUGP(4, dev, "card damaged or wrong way "
 898                                         "inserted\n");
 899                         }
 900 #endif
 901                         dev->cwarn = 0;
 902                         wake_up_interruptible(&dev->atrq);      /* wake open */
 903                 }
 904                 dev->cwarn++;
 905                 dev->mdelay = T_100MSEC;
 906                 dev->mstate = M_FETCH_ATR;
 907                 break;
 908         default:
 909                 DEBUGP(7, dev, "Unknown action\n");
 910                 break;          /* nothing */
 911         }
 912
 913 release_io:
 914         DEBUGP(7, dev, "release_io\n");
 915         clear_bit(LOCK_IO, &dev->flags);
 916         wake_up_interruptible(&dev->ioq);       /* whoever needs IO */
 917
 918 return_with_timer:
 919         DEBUGP(7, dev, "<- monitor_card (returns with timer)\n");
 920         mod_timer(&dev->timer, jiffies + dev->mdelay);
 921         clear_bit(LOCK_MONITOR, &dev->flags);
 922 }
 923
 924 /* Interface to userland (file_operations) */
 925
 926 static ssize_t cmm_read(struct file *filp, __user char *buf, size_t count,
 927                         loff_t *ppos)
 928 {
 929         struct cm4000_dev *dev = filp->private_data;
 930         unsigned int iobase = dev->p_dev->io.BasePort1;
 931         ssize_t rc;
 932         int i, j, k;
 933
 934         DEBUGP(2, dev, "-> cmm_read(%s,%d)\n", current->comm, current->pid);
 935
 936         if (count == 0)         /* according to manpage */
 937                 return 0;
 938
 939         if (!pcmcia_dev_present(dev->p_dev) || /* device removed */
 940             test_bit(IS_CMM_ABSENT, &dev->flags))
 941                 return -ENODEV;
 942
 943         if (test_bit(IS_BAD_CSUM, &dev->flags))
 944                 return -EIO;
 945
 946         /* also see the note about this in cmm_write */
 947         if (wait_event_interruptible
 948             (dev->atrq,
 949              ((filp->f_flags & O_NONBLOCK)
 950               || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags) != 0)))) {
 951                 if (filp->f_flags & O_NONBLOCK)
 952                         return -EAGAIN;
 953                 return -ERESTARTSYS;
 954         }
 955
 956         if (test_bit(IS_ATR_VALID, &dev->flags) == 0)
 957                 return -EIO;
 958
 959         /* this one implements blocking IO */
 960         if (wait_event_interruptible
 961             (dev->readq,
 962              ((filp->f_flags & O_NONBLOCK) || (dev->rpos < dev->rlen)))) {
 963                 if (filp->f_flags & O_NONBLOCK)
 964                         return -EAGAIN;
 965                 return -ERESTARTSYS;
 966         }
 967
 968         /* lock io */
 969         if (wait_event_interruptible
 970             (dev->ioq,
 971              ((filp->f_flags & O_NONBLOCK)
 972               || (test_and_set_bit(LOCK_IO, (void *)&dev->flags) == 0)))) {
 973                 if (filp->f_flags & O_NONBLOCK)
 974                         return -EAGAIN;
 975                 return -ERESTARTSYS;
 976         }
 977
 978         rc = 0;
 979         dev->flags0 = inb(REG_FLAGS0(iobase));
 980         if ((dev->flags0 & 1) == 0      /* no smartcard inserted */
 981             || dev->flags0 == 0xff) {   /* no cardman inserted */
 982                 clear_bit(IS_ATR_VALID, &dev->flags);
 983                 if (dev->flags0 & 1) {
 984                         set_bit(IS_CMM_ABSENT, &dev->flags);
 985                         rc = -ENODEV;
 986                 }
 987                 rc = -EIO;
 988                 goto release_io;
 989         }
 990
 991         DEBUGP(4, dev, "begin read answer\n");
 992         j = min(count, (size_t)(dev->rlen - dev->rpos));
 993         k = dev->rpos;
 994         if (k + j > 255)
 995                 j = 256 - k;
 996         DEBUGP(4, dev, "read1 j=%d\n", j);
 997         for (i = 0; i < j; i++) {
 998                 xoutb(k++, REG_BUF_ADDR(iobase));
 999                 dev->rbuf[i] = xinb(REG_BUF_DATA(iobase));
1000         }
1001         j = min(count, (size_t)(dev->rlen - dev->rpos));
1002         if (k + j > 255) {
1003                 DEBUGP(4, dev, "read2 j=%d\n", j);
1004                 dev->flags1 |= 0x10;    /* MSB buf addr set */
1005                 xoutb(dev->flags1, REG_FLAGS1(iobase));
1006                 for (; i < j; i++) {
1007                         xoutb(k++, REG_BUF_ADDR(iobase));
1008                         dev->rbuf[i] = xinb(REG_BUF_DATA(iobase));
1009                 }
1010         }
1011
1012         if (dev->proto == 0 && count > dev->rlen - dev->rpos && i) {
1013                 DEBUGP(4, dev, "T=0 and count > buffer\n");
1014                 dev->rbuf[i] = dev->rbuf[i - 1];
1015                 dev->rbuf[i - 1] = dev->procbyte;
1016                 j++;
1017         }
1018         count = j;
1019
1020         dev->rpos = dev->rlen + 1;
1021
1022         /* Clear T1Active */
1023         DEBUGP(4, dev, "Clear T1Active\n");
1024         dev->flags1 &= 0xdf;
1025         xoutb(dev->flags1, REG_FLAGS1(iobase));
1026
1027         xoutb(0, REG_FLAGS1(iobase));   /* clear detectCMM */
1028         /* last check before exit */
1029         if (!io_detect_cm4000(iobase, dev))
1030                 count = -ENODEV;
1031
1032         if (test_bit(IS_INVREV, &dev->flags) && count > 0)
1033                 str_invert_revert(dev->rbuf, count);
1034
1035         if (copy_to_user(buf, dev->rbuf, count))
1036                 return -EFAULT;
1037
1038 release_io:
1039         clear_bit(LOCK_IO, &dev->flags);
1040         wake_up_interruptible(&dev->ioq);
1041
1042         DEBUGP(2, dev, "<- cmm_read returns: rc = %Zi\n",
1043                (rc < 0 ? rc : count));
1044         return rc < 0 ? rc : count;
1045 }
1046
1047 static ssize_t cmm_write(struct file *filp, const char __user *buf,
1048                          size_t count, loff_t *ppos)
1049 {
1050         struct cm4000_dev *dev = (struct cm4000_dev *) filp->private_data;
1051         unsigned int iobase = dev->p_dev->io.BasePort1;
1052         unsigned short s;
1053         unsigned char tmp;
1054         unsigned char infolen;
1055         unsigned char sendT0;
1056         unsigned short nsend;
1057         unsigned short nr;
1058         ssize_t rc;
1059         int i;
1060
1061         DEBUGP(2, dev, "-> cmm_write(%s,%d)\n", current->comm, current->pid);
1062
1063         if (count == 0)         /* according to manpage */
1064                 return 0;
1065
1066         if (dev->proto == 0 && count < 4) {
1067                 /* T0 must have at least 4 bytes */
1068                 DEBUGP(4, dev, "T0 short write\n");
1069                 return -EIO;
1070         }
1071
1072         nr = count & 0x1ff;     /* max bytes to write */
1073
1074         sendT0 = dev->proto ? 0 : nr > 5 ? 0x08 : 0;
1075
1076         if (!pcmcia_dev_present(dev->p_dev) || /* device removed */
1077             test_bit(IS_CMM_ABSENT, &dev->flags))
1078                 return -ENODEV;
1079
1080         if (test_bit(IS_BAD_CSUM, &dev->flags)) {
1081                 DEBUGP(4, dev, "bad csum\n");
1082                 return -EIO;
1083         }
1084
1085         /*
1086          * wait for atr to become valid.
1087          * note: it is important to lock this code. if we dont, the monitor
1088          * could be run between test_bit and the call to sleep on the
1089          * atr-queue.  if *then* the monitor detects atr valid, it will wake up
1090          * any process on the atr-queue, *but* since we have been interrupted,
1091          * we do not yet sleep on this queue. this would result in a missed
1092          * wake_up and the calling process would sleep forever (until
1093          * interrupted).  also, do *not* restore_flags before sleep_on, because
1094          * this could result in the same situation!
1095          */
1096         if (wait_event_interruptible
1097             (dev->atrq,
1098              ((filp->f_flags & O_NONBLOCK)
1099               || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags) != 0)))) {
1100                 if (filp->f_flags & O_NONBLOCK)
1101                         return -EAGAIN;
1102                 return -ERESTARTSYS;
1103         }
1104
1105         if (test_bit(IS_ATR_VALID, &dev->flags) == 0) { /* invalid atr */
1106                 DEBUGP(4, dev, "invalid ATR\n");
1107                 return -EIO;
1108         }
1109
1110         /* lock io */
1111         if (wait_event_interruptible
1112             (dev->ioq,
1113              ((filp->f_flags & O_NONBLOCK)
1114               || (test_and_set_bit(LOCK_IO, (void *)&dev->flags) == 0)))) {
1115                 if (filp->f_flags & O_NONBLOCK)
1116                         return -EAGAIN;
1117                 return -ERESTARTSYS;
1118         }
1119
1120         if (copy_from_user(dev->sbuf, buf, ((count > 512) ? 512 : count)))
1121                 return -EFAULT;
1122
1123         rc = 0;
1124         dev->flags0 = inb(REG_FLAGS0(iobase));
1125         if ((dev->flags0 & 1) == 0      /* no smartcard inserted */
1126             || dev->flags0 == 0xff) {   /* no cardman inserted */
1127                 clear_bit(IS_ATR_VALID, &dev->flags);
1128                 if (dev->flags0 & 1) {
1129                         set_bit(IS_CMM_ABSENT, &dev->flags);
1130                         rc = -ENODEV;
1131                 } else {
1132                         DEBUGP(4, dev, "IO error\n");
1133                         rc = -EIO;
1134                 }
1135                 goto release_io;
1136         }
1137
1138         xoutb(0x80, REG_FLAGS0(iobase));        /* reset SM  */
1139
1140         if (!io_detect_cm4000(iobase, dev)) {
1141                 rc = -ENODEV;
1142                 goto release_io;
1143         }
1144
1145         /* reflect T=0 send/read mode in flags1 */
1146         dev->flags1 |= (sendT0);
1147
1148         set_cardparameter(dev);
1149
1150         /* dummy read, reset flag procedure received */
1151         tmp = inb(REG_FLAGS1(iobase));
1152
1153         dev->flags1 = 0x20      /* T_Active */
1154             | (sendT0)
1155             | (test_bit(IS_INVREV, &dev->flags) ? 2 : 0)/* inverse parity  */
1156             | (((dev->baudv - 1) & 0x0100) >> 8);       /* MSB-Baud */
1157         DEBUGP(1, dev, "set dev->flags1 = 0x%.2x\n", dev->flags1);
1158         xoutb(dev->flags1, REG_FLAGS1(iobase));
1159
1160         /* xmit data */
1161         DEBUGP(4, dev, "Xmit data\n");
1162         for (i = 0; i < nr; i++) {
1163                 if (i >= 256) {
1164                         dev->flags1 = 0x20      /* T_Active */
1165                             | (sendT0)  /* SendT0 */
1166                                 /* inverse parity: */
1167                             | (test_bit(IS_INVREV, &dev->flags) ? 2 : 0)
1168                             | (((dev->baudv - 1) & 0x0100) >> 8) /* MSB-Baud */
1169                             | 0x10;     /* set address high */
1170                         DEBUGP(4, dev, "dev->flags = 0x%.2x - set address "
1171                                "high\n", dev->flags1);
1172                         xoutb(dev->flags1, REG_FLAGS1(iobase));
1173                 }
1174                 if (test_bit(IS_INVREV, &dev->flags)) {
1175                         DEBUGP(4, dev, "Apply inverse convention for 0x%.2x "
1176                                 "-> 0x%.2x\n", (unsigned char)dev->sbuf[i],
1177                               invert_revert(dev->sbuf[i]));
1178                         xoutb(i, REG_BUF_ADDR(iobase));
1179                         xoutb(invert_revert(dev->sbuf[i]),
1180                               REG_BUF_DATA(iobase));
1181                 } else {
1182                         xoutb(i, REG_BUF_ADDR(iobase));
1183                         xoutb(dev->sbuf[i], REG_BUF_DATA(iobase));
1184                 }
1185         }
1186         DEBUGP(4, dev, "Xmit done\n");
1187
1188         if (dev->proto == 0) {
1189                 /* T=0 proto: 0 byte reply  */
1190                 if (nr == 4) {
1191                         DEBUGP(4, dev, "T=0 assumes 0 byte reply\n");
1192                         xoutb(i, REG_BUF_ADDR(iobase));
1193                         if (test_bit(IS_INVREV, &dev->flags))
1194                                 xoutb(0xff, REG_BUF_DATA(iobase));
1195                         else
1196                                 xoutb(0x00, REG_BUF_DATA(iobase));
1197                 }
1198
1199                 /* numSendBytes */
1200                 if (sendT0)
1201                         nsend = nr;
1202                 else {
1203                         if (nr == 4)
1204                                 nsend = 5;
1205                         else {
1206                                 nsend = 5 + (unsigned char)dev->sbuf[4];
1207                                 if (dev->sbuf[4] == 0)
1208                                         nsend += 0x100;
1209                         }
1210                 }
1211         } else
1212                 nsend = nr;
1213
1214         /* T0: output procedure byte */
1215         if (test_bit(IS_INVREV, &dev->flags)) {
1216                 DEBUGP(4, dev, "T=0 set Procedure byte (inverse-reverse) "
1217                        "0x%.2x\n", invert_revert(dev->sbuf[1]));
1218                 xoutb(invert_revert(dev->sbuf[1]), REG_NUM_BYTES(iobase));
1219         } else {
1220                 DEBUGP(4, dev, "T=0 set Procedure byte 0x%.2x\n", dev->sbuf[1]);
1221                 xoutb(dev->sbuf[1], REG_NUM_BYTES(iobase));
1222         }
1223
1224         DEBUGP(1, dev, "set NumSendBytes = 0x%.2x\n",
1225                (unsigned char)(nsend & 0xff));
1226         xoutb((unsigned char)(nsend & 0xff), REG_NUM_SEND(iobase));
1227
1228         DEBUGP(1, dev, "Trigger CARDMAN CONTROLLER (0x%.2x)\n",
1229                0x40     /* SM_Active */
1230               | (dev->flags0 & 2 ? 0 : 4)       /* power on if needed */
1231               |(dev->proto ? 0x10 : 0x08)       /* T=1/T=0 */
1232               |(nsend & 0x100) >> 8 /* MSB numSendBytes */ );
1233         xoutb(0x40              /* SM_Active */
1234               | (dev->flags0 & 2 ? 0 : 4)       /* power on if needed */
1235               |(dev->proto ? 0x10 : 0x08)       /* T=1/T=0 */
1236               |(nsend & 0x100) >> 8,    /* MSB numSendBytes */
1237               REG_FLAGS0(iobase));
1238
1239         /* wait for xmit done */
1240         if (dev->proto == 1) {
1241                 DEBUGP(4, dev, "Wait for xmit done\n");
1242                 for (i = 0; i < 1000; i++) {
1243                         if (inb(REG_FLAGS0(iobase)) & 0x08)
1244                                 break;
1245                         msleep_interruptible(10);
1246                 }
1247                 if (i == 1000) {
1248                         DEBUGP(4, dev, "timeout waiting for xmit done\n");
1249                         rc = -EIO;
1250                         goto release_io;
1251                 }
1252         }
1253
1254         /* T=1: wait for infoLen */
1255
1256         infolen = 0;
1257         if (dev->proto) {
1258                 /* wait until infoLen is valid */
1259                 for (i = 0; i < 6000; i++) {    /* max waiting time of 1 min */
1260                         io_read_num_rec_bytes(iobase, &s);
1261                         if (s >= 3) {
1262                                 infolen = inb(REG_FLAGS1(iobase));
1263                                 DEBUGP(4, dev, "infolen=%d\n", infolen);
1264                                 break;
1265                         }
1266                         msleep_interruptible(10);
1267                 }
1268                 if (i == 6000) {
1269                         DEBUGP(4, dev, "timeout waiting for infoLen\n");
1270                         rc = -EIO;
1271                         goto release_io;
1272                 }
1273         } else
1274                 clear_bit(IS_PROCBYTE_PRESENT, &dev->flags);
1275
1276         /* numRecBytes | bit9 of numRecytes */
1277         io_read_num_rec_bytes(iobase, &dev->rlen);
1278         for (i = 0; i < 600; i++) {     /* max waiting time of 2 sec */
1279                 if (dev->proto) {
1280                         if (dev->rlen >= infolen + 4)
1281                                 break;
1282                 }
1283                 msleep_interruptible(10);
1284                 /* numRecBytes | bit9 of numRecytes */
1285                 io_read_num_rec_bytes(iobase, &s);
1286                 if (s > dev->rlen) {
1287                         DEBUGP(1, dev, "NumRecBytes inc (reset timeout)\n");
1288                         i = 0;  /* reset timeout */
1289                         dev->rlen = s;
1290                 }
1291                 /* T=0: we are done when numRecBytes doesn't
1292                  *      increment any more and NoProcedureByte
1293                  *      is set and numRecBytes == bytes sent + 6
1294                  *      (header bytes + data + 1 for sw2)
1295                  *      except when the card replies an error
1296                  *      which means, no data will be sent back.
1297                  */
1298                 else if (dev->proto == 0) {
1299                         if ((inb(REG_BUF_ADDR(iobase)) & 0x80)) {
1300                                 /* no procedure byte received since last read */
1301                                 DEBUGP(1, dev, "NoProcedure byte set\n");
1302                                 /* i=0; */
1303                         } else {
1304                                 /* procedure byte received since last read */
1305                                 DEBUGP(1, dev, "NoProcedure byte unset "
1306                                         "(reset timeout)\n");
1307                                 dev->procbyte = inb(REG_FLAGS1(iobase));
1308                                 DEBUGP(1, dev, "Read procedure byte 0x%.2x\n",
1309                                       dev->procbyte);
1310                                 i = 0;  /* resettimeout */
1311                         }
1312                         if (inb(REG_FLAGS0(iobase)) & 0x08) {
1313                                 DEBUGP(1, dev, "T0Done flag (read reply)\n");
1314                                 break;
1315                         }
1316                 }
1317                 if (dev->proto)
1318                         infolen = inb(REG_FLAGS1(iobase));
1319         }
1320         if (i == 600) {
1321                 DEBUGP(1, dev, "timeout waiting for numRecBytes\n");
1322                 rc = -EIO;
1323                 goto release_io;
1324         } else {
1325                 if (dev->proto == 0) {
1326                         DEBUGP(1, dev, "Wait for T0Done bit to be  set\n");
1327                         for (i = 0; i < 1000; i++) {
1328                                 if (inb(REG_FLAGS0(iobase)) & 0x08)
1329                                         break;
1330                                 msleep_interruptible(10);
1331                         }
1332                         if (i == 1000) {
1333                                 DEBUGP(1, dev, "timeout waiting for T0Done\n");
1334                                 rc = -EIO;
1335                                 goto release_io;
1336                         }
1337
1338                         dev->procbyte = inb(REG_FLAGS1(iobase));
1339                         DEBUGP(4, dev, "Read procedure byte 0x%.2x\n",
1340                               dev->procbyte);
1341
1342                         io_read_num_rec_bytes(iobase, &dev->rlen);
1343                         DEBUGP(4, dev, "Read NumRecBytes = %i\n", dev->rlen);
1344
1345                 }
1346         }
1347         /* T=1: read offset=zero, T=0: read offset=after challenge */
1348         dev->rpos = dev->proto ? 0 : nr == 4 ? 5 : nr > dev->rlen ? 5 : nr;
1349         DEBUGP(4, dev, "dev->rlen = %i,  dev->rpos = %i, nr = %i\n",
1350               dev->rlen, dev->rpos, nr);
1351
1352 release_io:
1353         DEBUGP(4, dev, "Reset SM\n");
1354         xoutb(0x80, REG_FLAGS0(iobase));        /* reset SM */
1355
1356         if (rc < 0) {
1357                 DEBUGP(4, dev, "Write failed but clear T_Active\n");
1358                 dev->flags1 &= 0xdf;
1359                 xoutb(dev->flags1, REG_FLAGS1(iobase));
1360         }
1361
1362         clear_bit(LOCK_IO, &dev->flags);
1363         wake_up_interruptible(&dev->ioq);
1364         wake_up_interruptible(&dev->readq);     /* tell read we have data */
1365
1366         /* ITSEC E2: clear write buffer */
1367         memset((char *)dev->sbuf, 0, 512);
1368
1369         /* return error or actually written bytes */
1370         DEBUGP(2, dev, "<- cmm_write\n");
1371         return rc < 0 ? rc : nr;
1372 }
1373
1374 static void start_monitor(struct cm4000_dev *dev)
1375 {
1376         DEBUGP(3, dev, "-> start_monitor\n");
1377         if (!dev->monitor_running) {
1378                 DEBUGP(5, dev, "create, init and add timer\n");
1379                 setup_timer(&dev->timer, monitor_card, (unsigned long)dev);
1380                 dev->monitor_running = 1;
1381                 mod_timer(&dev->timer, jiffies);
1382         } else
1383                 DEBUGP(5, dev, "monitor already running\n");
1384         DEBUGP(3, dev, "<- start_monitor\n");
1385 }
1386
1387 static void stop_monitor(struct cm4000_dev *dev)
1388 {
1389         DEBUGP(3, dev, "-> stop_monitor\n");
1390         if (dev->monitor_running) {
1391                 DEBUGP(5, dev, "stopping monitor\n");
1392                 terminate_monitor(dev);
1393                 /* reset monitor SM */
1394                 clear_bit(IS_ATR_VALID, &dev->flags);
1395                 clear_bit(IS_ATR_PRESENT, &dev->flags);
1396         } else
1397                 DEBUGP(5, dev, "monitor already stopped\n");
1398         DEBUGP(3, dev, "<- stop_monitor\n");
1399 }
1400
1401 static long cmm_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
1402 {
1403         struct cm4000_dev *dev = filp->private_data;
1404         unsigned int iobase = dev->p_dev->io.BasePort1;
1405         struct inode *inode = filp->f_path.dentry->d_inode;
1406         struct pcmcia_device *link;
1407         int size;
1408         int rc;
1409         void __user *argp = (void __user *)arg;
1410 #ifdef CM4000_DEBUG
1411         char *ioctl_names[CM_IOC_MAXNR + 1] = {
1412                 [_IOC_NR(CM_IOCGSTATUS)] "CM_IOCGSTATUS",
1413                 [_IOC_NR(CM_IOCGATR)] "CM_IOCGATR",
1414                 [_IOC_NR(CM_IOCARDOFF)] "CM_IOCARDOFF",
1415                 [_IOC_NR(CM_IOCSPTS)] "CM_IOCSPTS",
1416                 [_IOC_NR(CM_IOSDBGLVL)] "CM4000_DBGLVL",
1417         };
1418         DEBUGP(3, dev, "cmm_ioctl(device=%d.%d) %s\n", imajor(inode),
1419                iminor(inode), ioctl_names[_IOC_NR(cmd)]);
1420 #endif
1421
1422         lock_kernel();
1423         rc = -ENODEV;
1424         link = dev_table[iminor(inode)];
1425         if (!pcmcia_dev_present(link)) {
1426                 DEBUGP(4, dev, "DEV_OK false\n");
1427                 goto out;
1428         }
1429
1430         if (test_bit(IS_CMM_ABSENT, &dev->flags)) {
1431                 DEBUGP(4, dev, "CMM_ABSENT flag set\n");
1432                 goto out;
1433         }
1434         rc = -EINVAL;
1435
1436         if (_IOC_TYPE(cmd) != CM_IOC_MAGIC) {
1437                 DEBUGP(4, dev, "ioctype mismatch\n");
1438                 goto out;
1439         }
1440         if (_IOC_NR(cmd) > CM_IOC_MAXNR) {
1441                 DEBUGP(4, dev, "iocnr mismatch\n");
1442                 goto out;
1443         }
1444         size = _IOC_SIZE(cmd);
1445         rc = -EFAULT;
1446         DEBUGP(4, dev, "iocdir=%.4x iocr=%.4x iocw=%.4x iocsize=%d cmd=%.4x\n",
1447               _IOC_DIR(cmd), _IOC_READ, _IOC_WRITE, size, cmd);
1448
1449         if (_IOC_DIR(cmd) & _IOC_READ) {
1450                 if (!access_ok(VERIFY_WRITE, argp, size))
1451                         goto out;
1452         }
1453         if (_IOC_DIR(cmd) & _IOC_WRITE) {
1454                 if (!access_ok(VERIFY_READ, argp, size))
1455                         goto out;
1456         }
1457         rc = 0;
1458
1459         switch (cmd) {
1460         case CM_IOCGSTATUS:
1461                 DEBUGP(4, dev, " ... in CM_IOCGSTATUS\n");
1462                 {
1463                         int status;
1464
1465                         /* clear other bits, but leave inserted & powered as
1466                          * they are */
1467                         status = dev->flags0 & 3;
1468                         if (test_bit(IS_ATR_PRESENT, &dev->flags))
1469                                 status |= CM_ATR_PRESENT;
1470                         if (test_bit(IS_ATR_VALID, &dev->flags))
1471                                 status |= CM_ATR_VALID;
1472                         if (test_bit(IS_CMM_ABSENT, &dev->flags))
1473                                 status |= CM_NO_READER;
1474                         if (test_bit(IS_BAD_CARD, &dev->flags))
1475                                 status |= CM_BAD_CARD;
1476                         if (copy_to_user(argp, &status, sizeof(int)))
1477                                 rc = -EFAULT;
1478                 }
1479                 break;
1480         case CM_IOCGATR:
1481                 DEBUGP(4, dev, "... in CM_IOCGATR\n");
1482                 {
1483                         struct atreq __user *atreq = argp;
1484                         int tmp;
1485                         /* allow nonblocking io and being interrupted */
1486                         if (wait_event_interruptible
1487                             (dev->atrq,
1488                              ((filp->f_flags & O_NONBLOCK)
1489                               || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags)
1490                                   != 0)))) {
1491                                 if (filp->f_flags & O_NONBLOCK)
1492                                         rc = -EAGAIN;
1493                                 else
1494                                         rc = -ERESTARTSYS;
1495                                 break;
1496                         }
1497
1498                         rc = -EFAULT;
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                                         break;
1504                         } else {
1505                                 if (copy_to_user(atreq->atr, dev->atr,
1506                                                  dev->atr_len))
1507                                         break;
1508
1509                                 tmp = dev->atr_len;
1510                                 if (copy_to_user(&(atreq->atr_len), &tmp, sizeof(int)))
1511                                         break;
1512                         }
1513                         rc = 0;
1514                         break;
1515                 }
1516         case CM_IOCARDOFF:
1517
1518 #ifdef CM4000_DEBUG
1519                 DEBUGP(4, dev, "... in CM_IOCARDOFF\n");
1520                 if (dev->flags0 & 0x01) {
1521                         DEBUGP(4, dev, "    Card inserted\n");
1522                 } else {
1523                         DEBUGP(2, dev, "    No card inserted\n");
1524                 }
1525                 if (dev->flags0 & 0x02) {
1526                         DEBUGP(4, dev, "    Card powered\n");
1527                 } else {
1528                         DEBUGP(2, dev, "    Card not powered\n");
1529                 }
1530 #endif
1531
1532                 /* is a card inserted and powered? */
1533                 if ((dev->flags0 & 0x01) && (dev->flags0 & 0x02)) {
1534
1535                         /* get IO lock */
1536                         if (wait_event_interruptible
1537                             (dev->ioq,
1538                              ((filp->f_flags & O_NONBLOCK)
1539                               || (test_and_set_bit(LOCK_IO, (void *)&dev->flags)
1540                                   == 0)))) {
1541                                 if (filp->f_flags & O_NONBLOCK)
1542                                         rc = -EAGAIN;
1543                                 else
1544                                         rc = -ERESTARTSYS;
1545                                 break;
1546                         }
1547                         /* Set Flags0 = 0x42 */
1548                         DEBUGP(4, dev, "Set Flags0=0x42 \n");
1549                         xoutb(0x42, REG_FLAGS0(iobase));
1550                         clear_bit(IS_ATR_PRESENT, &dev->flags);
1551                         clear_bit(IS_ATR_VALID, &dev->flags);
1552                         dev->mstate = M_CARDOFF;
1553                         clear_bit(LOCK_IO, &dev->flags);
1554                         if (wait_event_interruptible
1555                             (dev->atrq,
1556                              ((filp->f_flags & O_NONBLOCK)
1557                               || (test_bit(IS_ATR_VALID, (void *)&dev->flags) !=
1558                                   0)))) {
1559                                 if (filp->f_flags & O_NONBLOCK)
1560                                         rc = -EAGAIN;
1561                                 else
1562                                         rc = -ERESTARTSYS;
1563                                 break;
1564                         }
1565                 }
1566                 /* release lock */
1567                 clear_bit(LOCK_IO, &dev->flags);
1568                 wake_up_interruptible(&dev->ioq);
1569
1570                 rc = 0;
1571                 break;
1572         case CM_IOCSPTS:
1573                 {
1574                         struct ptsreq krnptsreq;
1575
1576                         if (copy_from_user(&krnptsreq, argp,
1577                                            sizeof(struct ptsreq))) {
1578                                 rc = -EFAULT;
1579                                 break;
1580                         }
1581
1582                         rc = 0;
1583                         DEBUGP(4, dev, "... in CM_IOCSPTS\n");
1584                         /* wait for ATR to get valid */
1585                         if (wait_event_interruptible
1586                             (dev->atrq,
1587                              ((filp->f_flags & O_NONBLOCK)
1588                               || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags)
1589                                   != 0)))) {
1590                                 if (filp->f_flags & O_NONBLOCK)
1591                                         rc = -EAGAIN;
1592                                 else
1593                                         rc = -ERESTARTSYS;
1594                                 break;
1595                         }
1596                         /* get IO lock */
1597                         if (wait_event_interruptible
1598                             (dev->ioq,
1599                              ((filp->f_flags & O_NONBLOCK)
1600                               || (test_and_set_bit(LOCK_IO, (void *)&dev->flags)
1601                                   == 0)))) {
1602                                 if (filp->f_flags & O_NONBLOCK)
1603                                         rc = -EAGAIN;
1604                                 else
1605                                         rc = -ERESTARTSYS;
1606                                 break;
1607                         }
1608
1609                         if ((rc = set_protocol(dev, &krnptsreq)) != 0) {
1610                                 /* auto power_on again */
1611                                 dev->mstate = M_FETCH_ATR;
1612                                 clear_bit(IS_ATR_VALID, &dev->flags);
1613                         }
1614                         /* release lock */
1615                         clear_bit(LOCK_IO, &dev->flags);
1616                         wake_up_interruptible(&dev->ioq);
1617
1618                 }
1619                 break;
1620 #ifdef CM4000_DEBUG
1621         case CM_IOSDBGLVL:
1622                 rc = -ENOTTY;
1623                 break;
1624 #endif
1625         default:
1626                 DEBUGP(4, dev, "... in default (unknown IOCTL code)\n");
1627                 rc = -ENOTTY;
1628         }
1629 out:
1630         unlock_kernel();
1631         return rc;
1632 }
1633
1634 static int cmm_open(struct inode *inode, struct file *filp)
1635 {
1636         struct cm4000_dev *dev;
1637         struct pcmcia_device *link;
1638         int minor = iminor(inode);
1639         int ret;
1640
1641         if (minor >= CM4000_MAX_DEV)
1642                 return -ENODEV;
1643
1644         lock_kernel();
1645         link = dev_table[minor];
1646         if (link == NULL || !pcmcia_dev_present(link)) {
1647                 ret = -ENODEV;
1648                 goto out;
1649         }
1650
1651         if (link->open) {
1652                 ret = -EBUSY;
1653                 goto out;
1654         }
1655
1656         dev = link->priv;
1657         filp->private_data = dev;
1658
1659         DEBUGP(2, dev, "-> cmm_open(device=%d.%d process=%s,%d)\n",
1660               imajor(inode), minor, current->comm, current->pid);
1661
1662         /* init device variables, they may be "polluted" after close
1663          * or, the device may never have been closed (i.e. open failed)
1664          */
1665
1666         ZERO_DEV(dev);
1667
1668         /* opening will always block since the
1669          * monitor will be started by open, which
1670          * means we have to wait for ATR becoming
1671          * vaild = block until valid (or card
1672          * inserted)
1673          */
1674         if (filp->f_flags & O_NONBLOCK) {
1675                 ret = -EAGAIN;
1676                 goto out;
1677         }
1678
1679         dev->mdelay = T_50MSEC;
1680
1681         /* start monitoring the cardstatus */
1682         start_monitor(dev);
1683
1684         link->open = 1;         /* only one open per device */
1685
1686         DEBUGP(2, dev, "<- cmm_open\n");
1687         ret = nonseekable_open(inode, filp);
1688 out:
1689         unlock_kernel();
1690         return ret;
1691 }
1692
1693 static int cmm_close(struct inode *inode, struct file *filp)
1694 {
1695         struct cm4000_dev *dev;
1696         struct pcmcia_device *link;
1697         int minor = iminor(inode);
1698
1699         if (minor >= CM4000_MAX_DEV)
1700                 return -ENODEV;
1701
1702         link = dev_table[minor];
1703         if (link == NULL)
1704                 return -ENODEV;
1705
1706         dev = link->priv;
1707
1708         DEBUGP(2, dev, "-> cmm_close(maj/min=%d.%d)\n",
1709                imajor(inode), minor);
1710
1711         stop_monitor(dev);
1712
1713         ZERO_DEV(dev);
1714
1715         link->open = 0;         /* only one open per device */
1716         wake_up(&dev->devq);    /* socket removed? */
1717
1718         DEBUGP(2, dev, "cmm_close\n");
1719         return 0;
1720 }
1721
1722 static void cmm_cm4000_release(struct pcmcia_device * link)
1723 {
1724         struct cm4000_dev *dev = link->priv;
1725
1726         /* dont terminate the monitor, rather rely on
1727          * close doing that for us.
1728          */
1729         DEBUGP(3, dev, "-> cmm_cm4000_release\n");
1730         while (link->open) {
1731                 printk(KERN_INFO MODULE_NAME ": delaying release until "
1732                        "process has terminated\n");
1733                 /* note: don't interrupt us:
1734                  * close the applications which own
1735                  * the devices _first_ !
1736                  */
1737                 wait_event(dev->devq, (link->open == 0));
1738         }
1739         /* dev->devq=NULL;      this cannot be zeroed earlier */
1740         DEBUGP(3, dev, "<- cmm_cm4000_release\n");
1741         return;
1742 }
1743
1744 /*==== Interface to PCMCIA Layer =======================================*/
1745
1746 static int cm4000_config_check(struct pcmcia_device *p_dev,
1747                                cistpl_cftable_entry_t *cfg,
1748                                cistpl_cftable_entry_t *dflt,
1749                                unsigned int vcc,
1750                                void *priv_data)
1751 {
1752         if (!cfg->io.nwin)
1753                 return -ENODEV;
1754
1755         /* Get the IOaddr */
1756         p_dev->io.BasePort1 = cfg->io.win[0].base;
1757         p_dev->io.NumPorts1 = cfg->io.win[0].len;
1758         p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
1759         if (!(cfg->io.flags & CISTPL_IO_8BIT))
1760                 p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
1761         if (!(cfg->io.flags & CISTPL_IO_16BIT))
1762                 p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
1763         p_dev->io.IOAddrLines = cfg->io.flags & CISTPL_IO_LINES_MASK;
1764
1765         return pcmcia_request_io(p_dev, &p_dev->io);
1766 }
1767
1768 static int cm4000_config(struct pcmcia_device * link, int devno)
1769 {
1770         struct cm4000_dev *dev;
1771
1772         /* read the config-tuples */
1773         if (pcmcia_loop_config(link, cm4000_config_check, NULL))
1774                 goto cs_release;
1775
1776         link->conf.IntType = 00000002;
1777
1778         if (pcmcia_request_configuration(link, &link->conf))
1779                 goto cs_release;
1780
1781         dev = link->priv;
1782         sprintf(dev->node.dev_name, DEVICE_NAME "%d", devno);
1783         dev->node.major = major;
1784         dev->node.minor = devno;
1785         dev->node.next = NULL;
1786         link->dev_node = &dev->node;
1787
1788         return 0;
1789
1790 cs_release:
1791         cm4000_release(link);
1792         return -ENODEV;
1793 }
1794
1795 static int cm4000_suspend(struct pcmcia_device *link)
1796 {
1797         struct cm4000_dev *dev;
1798
1799         dev = link->priv;
1800         stop_monitor(dev);
1801
1802         return 0;
1803 }
1804
1805 static int cm4000_resume(struct pcmcia_device *link)
1806 {
1807         struct cm4000_dev *dev;
1808
1809         dev = link->priv;
1810         if (link->open)
1811                 start_monitor(dev);
1812
1813         return 0;
1814 }
1815
1816 static void cm4000_release(struct pcmcia_device *link)
1817 {
1818         cmm_cm4000_release(link);       /* delay release until device closed */
1819         pcmcia_disable_device(link);
1820 }
1821
1822 static int cm4000_probe(struct pcmcia_device *link)
1823 {
1824         struct cm4000_dev *dev;
1825         int i, ret;
1826
1827         for (i = 0; i < CM4000_MAX_DEV; i++)
1828                 if (dev_table[i] == NULL)
1829                         break;
1830
1831         if (i == CM4000_MAX_DEV) {
1832                 printk(KERN_NOTICE MODULE_NAME ": all devices in use\n");
1833                 return -ENODEV;
1834         }
1835
1836         /* create a new cm4000_cs device */
1837         dev = kzalloc(sizeof(struct cm4000_dev), GFP_KERNEL);
1838         if (dev == NULL)
1839                 return -ENOMEM;
1840
1841         dev->p_dev = link;
1842         link->priv = dev;
1843         link->conf.IntType = INT_MEMORY_AND_IO;
1844         dev_table[i] = link;
1845
1846         init_waitqueue_head(&dev->devq);
1847         init_waitqueue_head(&dev->ioq);
1848         init_waitqueue_head(&dev->atrq);
1849         init_waitqueue_head(&dev->readq);
1850
1851         ret = cm4000_config(link, i);
1852         if (ret) {
1853                 dev_table[i] = NULL;
1854                 kfree(dev);
1855                 return ret;
1856         }
1857
1858         device_create(cmm_class, NULL, MKDEV(major, i), NULL, "cmm%d", i);
1859
1860         return 0;
1861 }
1862
1863 static void cm4000_detach(struct pcmcia_device *link)
1864 {
1865         struct cm4000_dev *dev = link->priv;
1866         int devno;
1867
1868         /* find device */
1869         for (devno = 0; devno < CM4000_MAX_DEV; devno++)
1870                 if (dev_table[devno] == link)
1871                         break;
1872         if (devno == CM4000_MAX_DEV)
1873                 return;
1874
1875         stop_monitor(dev);
1876
1877         cm4000_release(link);
1878
1879         dev_table[devno] = NULL;
1880         kfree(dev);
1881
1882         device_destroy(cmm_class, MKDEV(major, devno));
1883
1884         return;
1885 }
1886
1887 static const struct file_operations cm4000_fops = {
1888         .owner  = THIS_MODULE,
1889         .read   = cmm_read,
1890         .write  = cmm_write,
1891         .unlocked_ioctl = cmm_ioctl,
1892         .open   = cmm_open,
1893         .release= cmm_close,
1894 };
1895
1896 static struct pcmcia_device_id cm4000_ids[] = {
1897         PCMCIA_DEVICE_MANF_CARD(0x0223, 0x0002),
1898         PCMCIA_DEVICE_PROD_ID12("CardMan", "4000", 0x2FB368CA, 0xA2BD8C39),
1899         PCMCIA_DEVICE_NULL,
1900 };
1901 MODULE_DEVICE_TABLE(pcmcia, cm4000_ids);
1902
1903 static struct pcmcia_driver cm4000_driver = {
1904         .owner    = THIS_MODULE,
1905         .drv      = {
1906                 .name = "cm4000_cs",
1907                 },
1908         .probe    = cm4000_probe,
1909         .remove   = cm4000_detach,
1910         .suspend  = cm4000_suspend,
1911         .resume   = cm4000_resume,
1912         .id_table = cm4000_ids,
1913 };
1914
1915 static int __init cmm_init(void)
1916 {
1917         int rc;
1918
1919         printk(KERN_INFO "%s\n", version);
1920
1921         cmm_class = class_create(THIS_MODULE, "cardman_4000");
1922         if (IS_ERR(cmm_class))
1923                 return PTR_ERR(cmm_class);
1924
1925         major = register_chrdev(0, DEVICE_NAME, &cm4000_fops);
1926         if (major < 0) {
1927                 printk(KERN_WARNING MODULE_NAME
1928                         ": could not get major number\n");
1929                 class_destroy(cmm_class);
1930                 return major;
1931         }
1932
1933         rc = pcmcia_register_driver(&cm4000_driver);
1934         if (rc < 0) {
1935                 unregister_chrdev(major, DEVICE_NAME);
1936                 class_destroy(cmm_class);
1937                 return rc;
1938         }
1939
1940         return 0;
1941 }
1942
1943 static void __exit cmm_exit(void)
1944 {
1945         printk(KERN_INFO MODULE_NAME ": unloading\n");
1946         pcmcia_unregister_driver(&cm4000_driver);
1947         unregister_chrdev(major, DEVICE_NAME);
1948         class_destroy(cmm_class);
1949 };
1950
1951 module_init(cmm_init);
1952 module_exit(cmm_exit);
1953 MODULE_LICENSE("Dual BSD/GPL");