git.oblomov.eu Git - linux-2.6/blob - drivers/char/pcmcia/cm4000_cs.c

   1  /*
   2   * A driver for the PCMCIA Smartcard Reader "Omnikey CardMan Mobile 4000"
   3   *
   4   * cm4000_cs.c support.linux@omnikey.com
   5   *
   6   * Tue Oct 23 11:32:43 GMT 2001 herp - cleaned up header files
   7   * Sun Jan 20 10:11:15 MET 2002 herp - added modversion header files
   8   * Thu Nov 14 16:34:11 GMT 2002 mh   - added PPS functionality
   9   * Tue Nov 19 16:36:27 GMT 2002 mh   - added SUSPEND/RESUME functionailty
  10   * Wed Jul 28 12:55:01 CEST 2004 mh  - kernel 2.6 adjustments
  11   *
  12   * current version: 2.4.0gm4
  13   *
  14   * (C) 2000,2001,2002,2003,2004 Omnikey AG
  15   *
  16   * (C) 2005-2006 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 <linux/smp_lock.h>
  36 #include <linux/uaccess.h>
  37 #include <linux/io.h>
  38
  39 #include <pcmcia/cs_types.h>
  40 #include <pcmcia/cs.h>
  41 #include <pcmcia/cistpl.h>
  42 #include <pcmcia/cisreg.h>
  43 #include <pcmcia/ciscode.h>
  44 #include <pcmcia/ds.h>
  45
  46 #include <linux/cm4000_cs.h>
  47
  48 /* #define ATR_CSUM */
  49
  50 #ifdef PCMCIA_DEBUG
  51 #define reader_to_dev(x)        (&handle_to_dev(x->p_dev))
  52 static int pc_debug = PCMCIA_DEBUG;
  53 module_param(pc_debug, int, 0600);
  54 #define DEBUGP(n, rdr, x, args...) do {                                 \
  55         if (pc_debug >= (n))                                            \
  56                 dev_printk(KERN_DEBUG, reader_to_dev(rdr), "%s:" x,     \
  57                            __func__ , ## args);                 \
  58         } while (0)
  59 #else
  60 #define DEBUGP(n, rdr, x, args...)
  61 #endif
  62 static char *version = "cm4000_cs.c v2.4.0gm6 - All bugs added by Harald Welte";
  63
  64 #define T_1SEC          (HZ)
  65 #define T_10MSEC        msecs_to_jiffies(10)
  66 #define T_20MSEC        msecs_to_jiffies(20)
  67 #define T_40MSEC        msecs_to_jiffies(40)
  68 #define T_50MSEC        msecs_to_jiffies(50)
  69 #define T_100MSEC       msecs_to_jiffies(100)
  70 #define T_500MSEC       msecs_to_jiffies(500)
  71
  72 static void cm4000_release(struct pcmcia_device *link);
  73
  74 static int major;               /* major number we get from the kernel */
  75
  76 /* note: the first state has to have number 0 always */
  77
  78 #define M_FETCH_ATR     0
  79 #define M_TIMEOUT_WAIT  1
  80 #define M_READ_ATR_LEN  2
  81 #define M_READ_ATR      3
  82 #define M_ATR_PRESENT   4
  83 #define M_BAD_CARD      5
  84 #define M_CARDOFF       6
  85
  86 #define LOCK_IO                 0
  87 #define LOCK_MONITOR            1
  88
  89 #define IS_AUTOPPS_ACT           6
  90 #define IS_PROCBYTE_PRESENT      7
  91 #define IS_INVREV                8
  92 #define IS_ANY_T0                9
  93 #define IS_ANY_T1               10
  94 #define IS_ATR_PRESENT          11
  95 #define IS_ATR_VALID            12
  96 #define IS_CMM_ABSENT           13
  97 #define IS_BAD_LENGTH           14
  98 #define IS_BAD_CSUM             15
  99 #define IS_BAD_CARD             16
 100
 101 #define REG_FLAGS0(x)           (x + 0)
 102 #define REG_FLAGS1(x)           (x + 1)
 103 #define REG_NUM_BYTES(x)        (x + 2)
 104 #define REG_BUF_ADDR(x)         (x + 3)
 105 #define REG_BUF_DATA(x)         (x + 4)
 106 #define REG_NUM_SEND(x)         (x + 5)
 107 #define REG_BAUDRATE(x)         (x + 6)
 108 #define REG_STOPBITS(x)         (x + 7)
 109
 110 struct cm4000_dev {
 111         struct pcmcia_device *p_dev;
 112         dev_node_t node;                /* OS node (major,minor) */
 113
 114         unsigned char atr[MAX_ATR];
 115         unsigned char rbuf[512];
 116         unsigned char sbuf[512];
 117
 118         wait_queue_head_t devq;         /* when removing cardman must not be
 119                                            zeroed! */
 120
 121         wait_queue_head_t ioq;          /* if IO is locked, wait on this Q */
 122         wait_queue_head_t atrq;         /* wait for ATR valid */
 123         wait_queue_head_t readq;        /* used by write to wake blk.read */
 124
 125         /* warning: do not move this fields.
 126          * initialising to zero depends on it - see ZERO_DEV below.  */
 127         unsigned char atr_csum;
 128         unsigned char atr_len_retry;
 129         unsigned short atr_len;
 130         unsigned short rlen;    /* bytes avail. after write */
 131         unsigned short rpos;    /* latest read pos. write zeroes */
 132         unsigned char procbyte; /* T=0 procedure byte */
 133         unsigned char mstate;   /* state of card monitor */
 134         unsigned char cwarn;    /* slow down warning */
 135         unsigned char flags0;   /* cardman IO-flags 0 */
 136         unsigned char flags1;   /* cardman IO-flags 1 */
 137         unsigned int mdelay;    /* variable monitor speeds, in jiffies */
 138
 139         unsigned int baudv;     /* baud value for speed */
 140         unsigned char ta1;
 141         unsigned char proto;    /* T=0, T=1, ... */
 142         unsigned long flags;    /* lock+flags (MONITOR,IO,ATR) * for concurrent
 143                                    access */
 144
 145         unsigned char pts[4];
 146
 147         struct timer_list timer;        /* used to keep monitor running */
 148         int monitor_running;
 149 };
 150
 151 #define ZERO_DEV(dev)                                           \
 152         memset(&dev->atr_csum,0,                                \
 153                 sizeof(struct cm4000_dev) -                     \
 154                 offsetof(struct cm4000_dev, atr_csum))
 155
 156 static struct pcmcia_device *dev_table[CM4000_MAX_DEV];
 157 static struct class *cmm_class;
 158
 159 /* This table doesn't use spaces after the comma between fields and thus
 160  * violates CodingStyle.  However, I don't really think wrapping it around will
 161  * make it any clearer to read -HW */
 162 static unsigned char fi_di_table[10][14] = {
 163 /*FI     00   01   02   03   04   05   06   07   08   09   10   11   12   13 */
 164 /*DI */
 165 /* 0 */ {0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11},
 166 /* 1 */ {0x01,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x91,0x11,0x11,0x11,0x11},
 167 /* 2 */ {0x02,0x12,0x22,0x32,0x11,0x11,0x11,0x11,0x11,0x92,0xA2,0xB2,0x11,0x11},
 168 /* 3 */ {0x03,0x13,0x23,0x33,0x43,0x53,0x63,0x11,0x11,0x93,0xA3,0xB3,0xC3,0xD3},
 169 /* 4 */ {0x04,0x14,0x24,0x34,0x44,0x54,0x64,0x11,0x11,0x94,0xA4,0xB4,0xC4,0xD4},
 170 /* 5 */ {0x00,0x15,0x25,0x35,0x45,0x55,0x65,0x11,0x11,0x95,0xA5,0xB5,0xC5,0xD5},
 171 /* 6 */ {0x06,0x16,0x26,0x36,0x46,0x56,0x66,0x11,0x11,0x96,0xA6,0xB6,0xC6,0xD6},
 172 /* 7 */ {0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11},
 173 /* 8 */ {0x08,0x11,0x28,0x38,0x48,0x58,0x68,0x11,0x11,0x98,0xA8,0xB8,0xC8,0xD8},
 174 /* 9 */ {0x09,0x19,0x29,0x39,0x49,0x59,0x69,0x11,0x11,0x99,0xA9,0xB9,0xC9,0xD9}
 175 };
 176
 177 #ifndef PCMCIA_DEBUG
 178 #define xoutb   outb
 179 #define xinb    inb
 180 #else
 181 static inline void xoutb(unsigned char val, unsigned short port)
 182 {
 183         if (pc_debug >= 7)
 184                 printk(KERN_DEBUG "outb(val=%.2x,port=%.4x)\n", val, port);
 185         outb(val, port);
 186 }
 187 static inline unsigned char xinb(unsigned short port)
 188 {
 189         unsigned char val;
 190
 191         val = inb(port);
 192         if (pc_debug >= 7)
 193                 printk(KERN_DEBUG "%.2x=inb(%.4x)\n", val, port);
 194
 195         return val;
 196 }
 197 #endif
 198
 199 static inline unsigned char invert_revert(unsigned char ch)
 200 {
 201         return bitrev8(~ch);
 202 }
 203
 204 static void str_invert_revert(unsigned char *b, int len)
 205 {
 206         int i;
 207
 208         for (i = 0; i < len; i++)
 209                 b[i] = invert_revert(b[i]);
 210 }
 211
 212 #define ATRLENCK(dev,pos) \
 213         if (pos>=dev->atr_len || pos>=MAX_ATR) \
 214                 goto return_0;
 215
 216 static unsigned int calc_baudv(unsigned char fidi)
 217 {
 218         unsigned int wcrcf, wbrcf, fi_rfu, di_rfu;
 219
 220         fi_rfu = 372;
 221         di_rfu = 1;
 222
 223         /* FI */
 224         switch ((fidi >> 4) & 0x0F) {
 225         case 0x00:
 226                 wcrcf = 372;
 227                 break;
 228         case 0x01:
 229                 wcrcf = 372;
 230                 break;
 231         case 0x02:
 232                 wcrcf = 558;
 233                 break;
 234         case 0x03:
 235                 wcrcf = 744;
 236                 break;
 237         case 0x04:
 238                 wcrcf = 1116;
 239                 break;
 240         case 0x05:
 241                 wcrcf = 1488;
 242                 break;
 243         case 0x06:
 244                 wcrcf = 1860;
 245                 break;
 246         case 0x07:
 247                 wcrcf = fi_rfu;
 248                 break;
 249         case 0x08:
 250                 wcrcf = fi_rfu;
 251                 break;
 252         case 0x09:
 253                 wcrcf = 512;
 254                 break;
 255         case 0x0A:
 256                 wcrcf = 768;
 257                 break;
 258         case 0x0B:
 259                 wcrcf = 1024;
 260                 break;
 261         case 0x0C:
 262                 wcrcf = 1536;
 263                 break;
 264         case 0x0D:
 265                 wcrcf = 2048;
 266                 break;
 267         default:
 268                 wcrcf = fi_rfu;
 269                 break;
 270         }
 271
 272         /* DI */
 273         switch (fidi & 0x0F) {
 274         case 0x00:
 275                 wbrcf = di_rfu;
 276                 break;
 277         case 0x01:
 278                 wbrcf = 1;
 279                 break;
 280         case 0x02:
 281                 wbrcf = 2;
 282                 break;
 283         case 0x03:
 284                 wbrcf = 4;
 285                 break;
 286         case 0x04:
 287                 wbrcf = 8;
 288                 break;
 289         case 0x05:
 290                 wbrcf = 16;
 291                 break;
 292         case 0x06:
 293                 wbrcf = 32;
 294                 break;
 295         case 0x07:
 296                 wbrcf = di_rfu;
 297                 break;
 298         case 0x08:
 299                 wbrcf = 12;
 300                 break;
 301         case 0x09:
 302                 wbrcf = 20;
 303                 break;
 304         default:
 305                 wbrcf = di_rfu;
 306                 break;
 307         }
 308
 309         return (wcrcf / wbrcf);
 310 }
 311
 312 static unsigned short io_read_num_rec_bytes(unsigned int iobase,
 313                                             unsigned short *s)
 314 {
 315         unsigned short tmp;
 316
 317         tmp = *s = 0;
 318         do {
 319                 *s = tmp;
 320                 tmp = inb(REG_NUM_BYTES(iobase)) |
 321                                 (inb(REG_FLAGS0(iobase)) & 4 ? 0x100 : 0);
 322         } while (tmp != *s);
 323
 324         return *s;
 325 }
 326
 327 static int parse_atr(struct cm4000_dev *dev)
 328 {
 329         unsigned char any_t1, any_t0;
 330         unsigned char ch, ifno;
 331         int ix, done;
 332
 333         DEBUGP(3, dev, "-> parse_atr: dev->atr_len = %i\n", dev->atr_len);
 334
 335         if (dev->atr_len < 3) {
 336                 DEBUGP(5, dev, "parse_atr: atr_len < 3\n");
 337                 return 0;
 338         }
 339
 340         if (dev->atr[0] == 0x3f)
 341                 set_bit(IS_INVREV, &dev->flags);
 342         else
 343                 clear_bit(IS_INVREV, &dev->flags);
 344         ix = 1;
 345         ifno = 1;
 346         ch = dev->atr[1];
 347         dev->proto = 0;         /* XXX PROTO */
 348         any_t1 = any_t0 = done = 0;
 349         dev->ta1 = 0x11;        /* defaults to 9600 baud */
 350         do {
 351                 if (ifno == 1 && (ch & 0x10)) {
 352                         /* read first interface byte and TA1 is present */
 353                         dev->ta1 = dev->atr[2];
 354                         DEBUGP(5, dev, "Card says FiDi is 0x%.2x\n", dev->ta1);
 355                         ifno++;
 356                 } else if ((ifno == 2) && (ch & 0x10)) { /* TA(2) */
 357                         dev->ta1 = 0x11;
 358                         ifno++;
 359                 }
 360
 361                 DEBUGP(5, dev, "Yi=%.2x\n", ch & 0xf0);
 362                 ix += ((ch & 0x10) >> 4)        /* no of int.face chars */
 363                     +((ch & 0x20) >> 5)
 364                     + ((ch & 0x40) >> 6)
 365                     + ((ch & 0x80) >> 7);
 366                 /* ATRLENCK(dev,ix); */
 367                 if (ch & 0x80) {        /* TDi */
 368                         ch = dev->atr[ix];
 369                         if ((ch & 0x0f)) {
 370                                 any_t1 = 1;
 371                                 DEBUGP(5, dev, "card is capable of T=1\n");
 372                         } else {
 373                                 any_t0 = 1;
 374                                 DEBUGP(5, dev, "card is capable of T=0\n");
 375                         }
 376                 } else
 377                         done = 1;
 378         } while (!done);
 379
 380         DEBUGP(5, dev, "ix=%d noHist=%d any_t1=%d\n",
 381               ix, dev->atr[1] & 15, any_t1);
 382         if (ix + 1 + (dev->atr[1] & 0x0f) + any_t1 != dev->atr_len) {
 383                 DEBUGP(5, dev, "length error\n");
 384                 return 0;
 385         }
 386         if (any_t0)
 387                 set_bit(IS_ANY_T0, &dev->flags);
 388
 389         if (any_t1) {           /* compute csum */
 390                 dev->atr_csum = 0;
 391 #ifdef ATR_CSUM
 392                 for (i = 1; i < dev->atr_len; i++)
 393                         dev->atr_csum ^= dev->atr[i];
 394                 if (dev->atr_csum) {
 395                         set_bit(IS_BAD_CSUM, &dev->flags);
 396                         DEBUGP(5, dev, "bad checksum\n");
 397                         goto return_0;
 398                 }
 399 #endif
 400                 if (any_t0 == 0)
 401                         dev->proto = 1; /* XXX PROTO */
 402                 set_bit(IS_ANY_T1, &dev->flags);
 403         }
 404
 405         return 1;
 406 }
 407
 408 struct card_fixup {
 409         char atr[12];
 410         u_int8_t atr_len;
 411         u_int8_t stopbits;
 412 };
 413
 414 static struct card_fixup card_fixups[] = {
 415         {       /* ACOS */
 416                 .atr = { 0x3b, 0xb3, 0x11, 0x00, 0x00, 0x41, 0x01 },
 417                 .atr_len = 7,
 418                 .stopbits = 0x03,
 419         },
 420         {       /* Motorola */
 421                 .atr = {0x3b, 0x76, 0x13, 0x00, 0x00, 0x80, 0x62, 0x07,
 422                         0x41, 0x81, 0x81 },
 423                 .atr_len = 11,
 424                 .stopbits = 0x04,
 425         },
 426 };
 427
 428 static void set_cardparameter(struct cm4000_dev *dev)
 429 {
 430         int i;
 431         unsigned int iobase = dev->p_dev->io.BasePort1;
 432         u_int8_t stopbits = 0x02; /* ISO default */
 433
 434         DEBUGP(3, dev, "-> set_cardparameter\n");
 435
 436         dev->flags1 = dev->flags1 | (((dev->baudv - 1) & 0x0100) >> 8);
 437         xoutb(dev->flags1, REG_FLAGS1(iobase));
 438         DEBUGP(5, dev, "flags1 = 0x%02x\n", dev->flags1);
 439
 440         /* set baudrate */
 441         xoutb((unsigned char)((dev->baudv - 1) & 0xFF), REG_BAUDRATE(iobase));
 442
 443         DEBUGP(5, dev, "baudv = %i -> write 0x%02x\n", dev->baudv,
 444               ((dev->baudv - 1) & 0xFF));
 445
 446         /* set stopbits */
 447         for (i = 0; i < ARRAY_SIZE(card_fixups); i++) {
 448                 if (!memcmp(dev->atr, card_fixups[i].atr,
 449                             card_fixups[i].atr_len))
 450                         stopbits = card_fixups[i].stopbits;
 451         }
 452         xoutb(stopbits, REG_STOPBITS(iobase));
 453
 454         DEBUGP(3, dev, "<- set_cardparameter\n");
 455 }
 456
 457 static int set_protocol(struct cm4000_dev *dev, struct ptsreq *ptsreq)
 458 {
 459
 460         unsigned long tmp, i;
 461         unsigned short num_bytes_read;
 462         unsigned char pts_reply[4];
 463         ssize_t rc;
 464         unsigned int iobase = dev->p_dev->io.BasePort1;
 465
 466         rc = 0;
 467
 468         DEBUGP(3, dev, "-> set_protocol\n");
 469         DEBUGP(5, dev, "ptsreq->Protocol = 0x%.8x, ptsreq->Flags=0x%.8x, "
 470                  "ptsreq->pts1=0x%.2x, ptsreq->pts2=0x%.2x, "
 471                  "ptsreq->pts3=0x%.2x\n", (unsigned int)ptsreq->protocol,
 472                  (unsigned int)ptsreq->flags, ptsreq->pts1, ptsreq->pts2,
 473                  ptsreq->pts3);
 474
 475         /* Fill PTS structure */
 476         dev->pts[0] = 0xff;
 477         dev->pts[1] = 0x00;
 478         tmp = ptsreq->protocol;
 479         while ((tmp = (tmp >> 1)) > 0)
 480                 dev->pts[1]++;
 481         dev->proto = dev->pts[1];       /* Set new protocol */
 482         dev->pts[1] = (0x01 << 4) | (dev->pts[1]);
 483
 484         /* Correct Fi/Di according to CM4000 Fi/Di table */
 485         DEBUGP(5, dev, "Ta(1) from ATR is 0x%.2x\n", dev->ta1);
 486         /* set Fi/Di according to ATR TA(1) */
 487         dev->pts[2] = fi_di_table[dev->ta1 & 0x0F][(dev->ta1 >> 4) & 0x0F];
 488
 489         /* Calculate PCK character */
 490         dev->pts[3] = dev->pts[0] ^ dev->pts[1] ^ dev->pts[2];
 491
 492         DEBUGP(5, dev, "pts0=%.2x, pts1=%.2x, pts2=%.2x, pts3=%.2x\n",
 493                dev->pts[0], dev->pts[1], dev->pts[2], dev->pts[3]);
 494
 495         /* check card convention */
 496         if (test_bit(IS_INVREV, &dev->flags))
 497                 str_invert_revert(dev->pts, 4);
 498
 499         /* reset SM */
 500         xoutb(0x80, REG_FLAGS0(iobase));
 501
 502         /* Enable access to the message buffer */
 503         DEBUGP(5, dev, "Enable access to the messages buffer\n");
 504         dev->flags1 = 0x20      /* T_Active */
 505             | (test_bit(IS_INVREV, &dev->flags) ? 0x02 : 0x00) /* inv parity */
 506             | ((dev->baudv >> 8) & 0x01);       /* MSB-baud */
 507         xoutb(dev->flags1, REG_FLAGS1(iobase));
 508
 509         DEBUGP(5, dev, "Enable message buffer -> flags1 = 0x%.2x\n",
 510                dev->flags1);
 511
 512         /* write challenge to the buffer */
 513         DEBUGP(5, dev, "Write challenge to buffer: ");
 514         for (i = 0; i < 4; i++) {
 515                 xoutb(i, REG_BUF_ADDR(iobase));
 516                 xoutb(dev->pts[i], REG_BUF_DATA(iobase));       /* buf data */
 517 #ifdef PCMCIA_DEBUG
 518                 if (pc_debug >= 5)
 519                         printk("0x%.2x ", dev->pts[i]);
 520         }
 521         if (pc_debug >= 5)
 522                 printk("\n");
 523 #else
 524         }
 525 #endif
 526
 527         /* set number of bytes to write */
 528         DEBUGP(5, dev, "Set number of bytes to write\n");
 529         xoutb(0x04, REG_NUM_SEND(iobase));
 530
 531         /* Trigger CARDMAN CONTROLLER */
 532         xoutb(0x50, REG_FLAGS0(iobase));
 533
 534         /* Monitor progress */
 535         /* wait for xmit done */
 536         DEBUGP(5, dev, "Waiting for NumRecBytes getting valid\n");
 537
 538         for (i = 0; i < 100; i++) {
 539                 if (inb(REG_FLAGS0(iobase)) & 0x08) {
 540                         DEBUGP(5, dev, "NumRecBytes is valid\n");
 541                         break;
 542                 }
 543                 mdelay(10);
 544         }
 545         if (i == 100) {
 546                 DEBUGP(5, dev, "Timeout waiting for NumRecBytes getting "
 547                        "valid\n");
 548                 rc = -EIO;
 549                 goto exit_setprotocol;
 550         }
 551
 552         DEBUGP(5, dev, "Reading NumRecBytes\n");
 553         for (i = 0; i < 100; i++) {
 554                 io_read_num_rec_bytes(iobase, &num_bytes_read);
 555                 if (num_bytes_read >= 4) {
 556                         DEBUGP(2, dev, "NumRecBytes = %i\n", num_bytes_read);
 557                         break;
 558                 }
 559                 mdelay(10);
 560         }
 561
 562         /* check whether it is a short PTS reply? */
 563         if (num_bytes_read == 3)
 564                 i = 0;
 565
 566         if (i == 100) {
 567                 DEBUGP(5, dev, "Timeout reading num_bytes_read\n");
 568                 rc = -EIO;
 569                 goto exit_setprotocol;
 570         }
 571
 572         DEBUGP(5, dev, "Reset the CARDMAN CONTROLLER\n");
 573         xoutb(0x80, REG_FLAGS0(iobase));
 574
 575         /* Read PPS reply */
 576         DEBUGP(5, dev, "Read PPS reply\n");
 577         for (i = 0; i < num_bytes_read; i++) {
 578                 xoutb(i, REG_BUF_ADDR(iobase));
 579                 pts_reply[i] = inb(REG_BUF_DATA(iobase));
 580         }
 581
 582 #ifdef PCMCIA_DEBUG
 583         DEBUGP(2, dev, "PTSreply: ");
 584         for (i = 0; i < num_bytes_read; i++) {
 585                 if (pc_debug >= 5)
 586                         printk("0x%.2x ", pts_reply[i]);
 587         }
 588         printk("\n");
 589 #endif  /* PCMCIA_DEBUG */
 590
 591         DEBUGP(5, dev, "Clear Tactive in Flags1\n");
 592         xoutb(0x20, REG_FLAGS1(iobase));
 593
 594         /* Compare ptsreq and ptsreply */
 595         if ((dev->pts[0] == pts_reply[0]) &&
 596             (dev->pts[1] == pts_reply[1]) &&
 597             (dev->pts[2] == pts_reply[2]) && (dev->pts[3] == pts_reply[3])) {
 598                 /* setcardparameter according to PPS */
 599                 dev->baudv = calc_baudv(dev->pts[2]);
 600                 set_cardparameter(dev);
 601         } else if ((dev->pts[0] == pts_reply[0]) &&
 602                    ((dev->pts[1] & 0xef) == pts_reply[1]) &&
 603                    ((pts_reply[0] ^ pts_reply[1]) == pts_reply[2])) {
 604                 /* short PTS reply, set card parameter to default values */
 605                 dev->baudv = calc_baudv(0x11);
 606                 set_cardparameter(dev);
 607         } else
 608                 rc = -EIO;
 609
 610 exit_setprotocol:
 611         DEBUGP(3, dev, "<- set_protocol\n");
 612         return rc;
 613 }
 614
 615 static int io_detect_cm4000(unsigned int iobase, struct cm4000_dev *dev)
 616 {
 617
 618         /* note: statemachine is assumed to be reset */
 619         if (inb(REG_FLAGS0(iobase)) & 8) {
 620                 clear_bit(IS_ATR_VALID, &dev->flags);
 621                 set_bit(IS_CMM_ABSENT, &dev->flags);
 622                 return 0;       /* detect CMM = 1 -> failure */
 623         }
 624         /* xoutb(0x40, REG_FLAGS1(iobase)); detectCMM */
 625         xoutb(dev->flags1 | 0x40, REG_FLAGS1(iobase));
 626         if ((inb(REG_FLAGS0(iobase)) & 8) == 0) {
 627                 clear_bit(IS_ATR_VALID, &dev->flags);
 628                 set_bit(IS_CMM_ABSENT, &dev->flags);
 629                 return 0;       /* detect CMM=0 -> failure */
 630         }
 631         /* clear detectCMM again by restoring original flags1 */
 632         xoutb(dev->flags1, REG_FLAGS1(iobase));
 633         return 1;
 634 }
 635
 636 static void terminate_monitor(struct cm4000_dev *dev)
 637 {
 638
 639         /* tell the monitor to stop and wait until
 640          * it terminates.
 641          */
 642         DEBUGP(3, dev, "-> terminate_monitor\n");
 643         wait_event_interruptible(dev->devq,
 644                                  test_and_set_bit(LOCK_MONITOR,
 645                                                   (void *)&dev->flags));
 646
 647         /* now, LOCK_MONITOR has been set.
 648          * allow a last cycle in the monitor.
 649          * the monitor will indicate that it has
 650          * finished by clearing this bit.
 651          */
 652         DEBUGP(5, dev, "Now allow last cycle of monitor!\n");
 653         while (test_bit(LOCK_MONITOR, (void *)&dev->flags))
 654                 msleep(25);
 655
 656         DEBUGP(5, dev, "Delete timer\n");
 657         del_timer_sync(&dev->timer);
 658 #ifdef PCMCIA_DEBUG
 659         dev->monitor_running = 0;
 660 #endif
 661
 662         DEBUGP(3, dev, "<- terminate_monitor\n");
 663 }
 664
 665 /*
 666  * monitor the card every 50msec. as a side-effect, retrieve the
 667  * atr once a card is inserted. another side-effect of retrieving the
 668  * atr is that the card will be powered on, so there is no need to
 669  * power on the card explictely from the application: the driver
 670  * is already doing that for you.
 671  */
 672
 673 static void monitor_card(unsigned long p)
 674 {
 675         struct cm4000_dev *dev = (struct cm4000_dev *) p;
 676         unsigned int iobase = dev->p_dev->io.BasePort1;
 677         unsigned short s;
 678         struct ptsreq ptsreq;
 679         int i, atrc;
 680
 681         DEBUGP(7, dev, "->  monitor_card\n");
 682
 683         /* if someone has set the lock for us: we're done! */
 684         if (test_and_set_bit(LOCK_MONITOR, &dev->flags)) {
 685                 DEBUGP(4, dev, "About to stop monitor\n");
 686                 /* no */
 687                 dev->rlen =
 688                     dev->rpos =
 689                     dev->atr_csum = dev->atr_len_retry = dev->cwarn = 0;
 690                 dev->mstate = M_FETCH_ATR;
 691                 clear_bit(LOCK_MONITOR, &dev->flags);
 692                 /* close et al. are sleeping on devq, so wake it */
 693                 wake_up_interruptible(&dev->devq);
 694                 DEBUGP(2, dev, "<- monitor_card (we are done now)\n");
 695                 return;
 696         }
 697
 698         /* try to lock io: if it is already locked, just add another timer */
 699         if (test_and_set_bit(LOCK_IO, (void *)&dev->flags)) {
 700                 DEBUGP(4, dev, "Couldn't get IO lock\n");
 701                 goto return_with_timer;
 702         }
 703
 704         /* is a card/a reader inserted at all ? */
 705         dev->flags0 = xinb(REG_FLAGS0(iobase));
 706         DEBUGP(7, dev, "dev->flags0 = 0x%2x\n", dev->flags0);
 707         DEBUGP(7, dev, "smartcard present: %s\n",
 708                dev->flags0 & 1 ? "yes" : "no");
 709         DEBUGP(7, dev, "cardman present: %s\n",
 710                dev->flags0 == 0xff ? "no" : "yes");
 711
 712         if ((dev->flags0 & 1) == 0      /* no smartcard inserted */
 713             || dev->flags0 == 0xff) {   /* no cardman inserted */
 714                 /* no */
 715                 dev->rlen =
 716                     dev->rpos =
 717                     dev->atr_csum = dev->atr_len_retry = dev->cwarn = 0;
 718                 dev->mstate = M_FETCH_ATR;
 719
 720                 dev->flags &= 0x000000ff; /* only keep IO and MONITOR locks */
 721
 722                 if (dev->flags0 == 0xff) {
 723                         DEBUGP(4, dev, "set IS_CMM_ABSENT bit\n");
 724                         set_bit(IS_CMM_ABSENT, &dev->flags);
 725                 } else if (test_bit(IS_CMM_ABSENT, &dev->flags)) {
 726                         DEBUGP(4, dev, "clear IS_CMM_ABSENT bit "
 727                                "(card is removed)\n");
 728                         clear_bit(IS_CMM_ABSENT, &dev->flags);
 729                 }
 730
 731                 goto release_io;
 732         } else if ((dev->flags0 & 1) && test_bit(IS_CMM_ABSENT, &dev->flags)) {
 733                 /* cardman and card present but cardman was absent before
 734                  * (after suspend with inserted card) */
 735                 DEBUGP(4, dev, "clear IS_CMM_ABSENT bit (card is inserted)\n");
 736                 clear_bit(IS_CMM_ABSENT, &dev->flags);
 737         }
 738
 739         if (test_bit(IS_ATR_VALID, &dev->flags) == 1) {
 740                 DEBUGP(7, dev, "believe ATR is already valid (do nothing)\n");
 741                 goto release_io;
 742         }
 743
 744         switch (dev->mstate) {
 745                 unsigned char flags0;
 746         case M_CARDOFF:
 747                 DEBUGP(4, dev, "M_CARDOFF\n");
 748                 flags0 = inb(REG_FLAGS0(iobase));
 749                 if (flags0 & 0x02) {
 750                         /* wait until Flags0 indicate power is off */
 751                         dev->mdelay = T_10MSEC;
 752                 } else {
 753                         /* Flags0 indicate power off and no card inserted now;
 754                          * Reset CARDMAN CONTROLLER */
 755                         xoutb(0x80, REG_FLAGS0(iobase));
 756
 757                         /* prepare for fetching ATR again: after card off ATR
 758                          * is read again automatically */
 759                         dev->rlen =
 760                             dev->rpos =
 761                             dev->atr_csum =
 762                             dev->atr_len_retry = dev->cwarn = 0;
 763                         dev->mstate = M_FETCH_ATR;
 764
 765                         /* minimal gap between CARDOFF and read ATR is 50msec */
 766                         dev->mdelay = T_50MSEC;
 767                 }
 768                 break;
 769         case M_FETCH_ATR:
 770                 DEBUGP(4, dev, "M_FETCH_ATR\n");
 771                 xoutb(0x80, REG_FLAGS0(iobase));
 772                 DEBUGP(4, dev, "Reset BAUDV to 9600\n");
 773                 dev->baudv = 0x173;     /* 9600 */
 774                 xoutb(0x02, REG_STOPBITS(iobase));      /* stopbits=2 */
 775                 xoutb(0x73, REG_BAUDRATE(iobase));      /* baud value */
 776                 xoutb(0x21, REG_FLAGS1(iobase));        /* T_Active=1, baud
 777                                                            value */
 778                 /* warm start vs. power on: */
 779                 xoutb(dev->flags0 & 2 ? 0x46 : 0x44, REG_FLAGS0(iobase));
 780                 dev->mdelay = T_40MSEC;
 781                 dev->mstate = M_TIMEOUT_WAIT;
 782                 break;
 783         case M_TIMEOUT_WAIT:
 784                 DEBUGP(4, dev, "M_TIMEOUT_WAIT\n");
 785                 /* numRecBytes */
 786                 io_read_num_rec_bytes(iobase, &dev->atr_len);
 787                 dev->mdelay = T_10MSEC;
 788                 dev->mstate = M_READ_ATR_LEN;
 789                 break;
 790         case M_READ_ATR_LEN:
 791                 DEBUGP(4, dev, "M_READ_ATR_LEN\n");
 792                 /* infinite loop possible, since there is no timeout */
 793
 794 #define MAX_ATR_LEN_RETRY       100
 795
 796                 if (dev->atr_len == io_read_num_rec_bytes(iobase, &s)) {
 797                         if (dev->atr_len_retry++ >= MAX_ATR_LEN_RETRY) {                                        /* + XX msec */
 798                                 dev->mdelay = T_10MSEC;
 799                                 dev->mstate = M_READ_ATR;
 800                         }
 801                 } else {
 802                         dev->atr_len = s;
 803                         dev->atr_len_retry = 0; /* set new timeout */
 804                 }
 805
 806                 DEBUGP(4, dev, "Current ATR_LEN = %i\n", dev->atr_len);
 807                 break;
 808         case M_READ_ATR:
 809                 DEBUGP(4, dev, "M_READ_ATR\n");
 810                 xoutb(0x80, REG_FLAGS0(iobase));        /* reset SM */
 811                 for (i = 0; i < dev->atr_len; i++) {
 812                         xoutb(i, REG_BUF_ADDR(iobase));
 813                         dev->atr[i] = inb(REG_BUF_DATA(iobase));
 814                 }
 815                 /* Deactivate T_Active flags */
 816                 DEBUGP(4, dev, "Deactivate T_Active flags\n");
 817                 dev->flags1 = 0x01;
 818                 xoutb(dev->flags1, REG_FLAGS1(iobase));
 819
 820                 /* atr is present (which doesnt mean it's valid) */
 821                 set_bit(IS_ATR_PRESENT, &dev->flags);
 822                 if (dev->atr[0] == 0x03)
 823                         str_invert_revert(dev->atr, dev->atr_len);
 824                 atrc = parse_atr(dev);
 825                 if (atrc == 0) {        /* atr invalid */
 826                         dev->mdelay = 0;
 827                         dev->mstate = M_BAD_CARD;
 828                 } else {
 829                         dev->mdelay = T_50MSEC;
 830                         dev->mstate = M_ATR_PRESENT;
 831                         set_bit(IS_ATR_VALID, &dev->flags);
 832                 }
 833
 834                 if (test_bit(IS_ATR_VALID, &dev->flags) == 1) {
 835                         DEBUGP(4, dev, "monitor_card: ATR valid\n");
 836                         /* if ta1 == 0x11, no PPS necessary (default values) */
 837                         /* do not do PPS with multi protocol cards */
 838                         if ((test_bit(IS_AUTOPPS_ACT, &dev->flags) == 0) &&
 839                             (dev->ta1 != 0x11) &&
 840                             !(test_bit(IS_ANY_T0, &dev->flags) &&
 841                             test_bit(IS_ANY_T1, &dev->flags))) {
 842                                 DEBUGP(4, dev, "Perform AUTOPPS\n");
 843                                 set_bit(IS_AUTOPPS_ACT, &dev->flags);
 844                                 ptsreq.protocol = ptsreq.protocol =
 845                                     (0x01 << dev->proto);
 846                                 ptsreq.flags = 0x01;
 847                                 ptsreq.pts1 = 0x00;
 848                                 ptsreq.pts2 = 0x00;
 849                                 ptsreq.pts3 = 0x00;
 850                                 if (set_protocol(dev, &ptsreq) == 0) {
 851                                         DEBUGP(4, dev, "AUTOPPS ret SUCC\n");
 852                                         clear_bit(IS_AUTOPPS_ACT, &dev->flags);
 853                                         wake_up_interruptible(&dev->atrq);
 854                                 } else {
 855                                         DEBUGP(4, dev, "AUTOPPS failed: "
 856                                                "repower using defaults\n");
 857                                         /* prepare for repowering  */
 858                                         clear_bit(IS_ATR_PRESENT, &dev->flags);
 859                                         clear_bit(IS_ATR_VALID, &dev->flags);
 860                                         dev->rlen =
 861                                             dev->rpos =
 862                                             dev->atr_csum =
 863                                             dev->atr_len_retry = dev->cwarn = 0;
 864                                         dev->mstate = M_FETCH_ATR;
 865
 866                                         dev->mdelay = T_50MSEC;
 867                                 }
 868                         } else {
 869                                 /* for cards which use slightly different
 870                                  * params (extra guard time) */
 871                                 set_cardparameter(dev);
 872                                 if (test_bit(IS_AUTOPPS_ACT, &dev->flags) == 1)
 873                                         DEBUGP(4, dev, "AUTOPPS already active "
 874                                                "2nd try:use default values\n");
 875                                 if (dev->ta1 == 0x11)
 876                                         DEBUGP(4, dev, "No AUTOPPS necessary "
 877                                                "TA(1)==0x11\n");
 878                                 if (test_bit(IS_ANY_T0, &dev->flags)
 879                                     && test_bit(IS_ANY_T1, &dev->flags))
 880                                         DEBUGP(4, dev, "Do NOT perform AUTOPPS "
 881                                                "with multiprotocol cards\n");
 882                                 clear_bit(IS_AUTOPPS_ACT, &dev->flags);
 883                                 wake_up_interruptible(&dev->atrq);
 884                         }
 885                 } else {
 886                         DEBUGP(4, dev, "ATR invalid\n");
 887                         wake_up_interruptible(&dev->atrq);
 888                 }
 889                 break;
 890         case M_BAD_CARD:
 891                 DEBUGP(4, dev, "M_BAD_CARD\n");
 892                 /* slow down warning, but prompt immediately after insertion */
 893                 if (dev->cwarn == 0 || dev->cwarn == 10) {
 894                         set_bit(IS_BAD_CARD, &dev->flags);
 895                         printk(KERN_WARNING MODULE_NAME ": device %s: ",
 896                                dev->node.dev_name);
 897                         if (test_bit(IS_BAD_CSUM, &dev->flags)) {
 898                                 DEBUGP(4, dev, "ATR checksum (0x%.2x, should "
 899                                        "be zero) failed\n", dev->atr_csum);
 900                         }
 901 #ifdef PCMCIA_DEBUG
 902                         else if (test_bit(IS_BAD_LENGTH, &dev->flags)) {
 903                                 DEBUGP(4, dev, "ATR length error\n");
 904                         } else {
 905                                 DEBUGP(4, dev, "card damaged or wrong way "
 906                                         "inserted\n");
 907                         }
 908 #endif
 909                         dev->cwarn = 0;
 910                         wake_up_interruptible(&dev->atrq);      /* wake open */
 911                 }
 912                 dev->cwarn++;
 913                 dev->mdelay = T_100MSEC;
 914                 dev->mstate = M_FETCH_ATR;
 915                 break;
 916         default:
 917                 DEBUGP(7, dev, "Unknown action\n");
 918                 break;          /* nothing */
 919         }
 920
 921 release_io:
 922         DEBUGP(7, dev, "release_io\n");
 923         clear_bit(LOCK_IO, &dev->flags);
 924         wake_up_interruptible(&dev->ioq);       /* whoever needs IO */
 925
 926 return_with_timer:
 927         DEBUGP(7, dev, "<- monitor_card (returns with timer)\n");
 928         mod_timer(&dev->timer, jiffies + dev->mdelay);
 929         clear_bit(LOCK_MONITOR, &dev->flags);
 930 }
 931
 932 /* Interface to userland (file_operations) */
 933
 934 static ssize_t cmm_read(struct file *filp, __user char *buf, size_t count,
 935                         loff_t *ppos)
 936 {
 937         struct cm4000_dev *dev = filp->private_data;
 938         unsigned int iobase = dev->p_dev->io.BasePort1;
 939         ssize_t rc;
 940         int i, j, k;
 941
 942         DEBUGP(2, dev, "-> cmm_read(%s,%d)\n", current->comm, current->pid);
 943
 944         if (count == 0)         /* according to manpage */
 945                 return 0;
 946
 947         if (!pcmcia_dev_present(dev->p_dev) || /* device removed */
 948             test_bit(IS_CMM_ABSENT, &dev->flags))
 949                 return -ENODEV;
 950
 951         if (test_bit(IS_BAD_CSUM, &dev->flags))
 952                 return -EIO;
 953
 954         /* also see the note about this in cmm_write */
 955         if (wait_event_interruptible
 956             (dev->atrq,
 957              ((filp->f_flags & O_NONBLOCK)
 958               || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags) != 0)))) {
 959                 if (filp->f_flags & O_NONBLOCK)
 960                         return -EAGAIN;
 961                 return -ERESTARTSYS;
 962         }
 963
 964         if (test_bit(IS_ATR_VALID, &dev->flags) == 0)
 965                 return -EIO;
 966
 967         /* this one implements blocking IO */
 968         if (wait_event_interruptible
 969             (dev->readq,
 970              ((filp->f_flags & O_NONBLOCK) || (dev->rpos < dev->rlen)))) {
 971                 if (filp->f_flags & O_NONBLOCK)
 972                         return -EAGAIN;
 973                 return -ERESTARTSYS;
 974         }
 975
 976         /* lock io */
 977         if (wait_event_interruptible
 978             (dev->ioq,
 979              ((filp->f_flags & O_NONBLOCK)
 980               || (test_and_set_bit(LOCK_IO, (void *)&dev->flags) == 0)))) {
 981                 if (filp->f_flags & O_NONBLOCK)
 982                         return -EAGAIN;
 983                 return -ERESTARTSYS;
 984         }
 985
 986         rc = 0;
 987         dev->flags0 = inb(REG_FLAGS0(iobase));
 988         if ((dev->flags0 & 1) == 0      /* no smartcard inserted */
 989             || dev->flags0 == 0xff) {   /* no cardman inserted */
 990                 clear_bit(IS_ATR_VALID, &dev->flags);
 991                 if (dev->flags0 & 1) {
 992                         set_bit(IS_CMM_ABSENT, &dev->flags);
 993                         rc = -ENODEV;
 994                 }
 995                 rc = -EIO;
 996                 goto release_io;
 997         }
 998
 999         DEBUGP(4, dev, "begin read answer\n");
1000         j = min(count, (size_t)(dev->rlen - dev->rpos));
1001         k = dev->rpos;
1002         if (k + j > 255)
1003                 j = 256 - k;
1004         DEBUGP(4, dev, "read1 j=%d\n", j);
1005         for (i = 0; i < j; i++) {
1006                 xoutb(k++, REG_BUF_ADDR(iobase));
1007                 dev->rbuf[i] = xinb(REG_BUF_DATA(iobase));
1008         }
1009         j = min(count, (size_t)(dev->rlen - dev->rpos));
1010         if (k + j > 255) {
1011                 DEBUGP(4, dev, "read2 j=%d\n", j);
1012                 dev->flags1 |= 0x10;    /* MSB buf addr set */
1013                 xoutb(dev->flags1, REG_FLAGS1(iobase));
1014                 for (; i < j; i++) {
1015                         xoutb(k++, REG_BUF_ADDR(iobase));
1016                         dev->rbuf[i] = xinb(REG_BUF_DATA(iobase));
1017                 }
1018         }
1019
1020         if (dev->proto == 0 && count > dev->rlen - dev->rpos) {
1021                 DEBUGP(4, dev, "T=0 and count > buffer\n");
1022                 dev->rbuf[i] = dev->rbuf[i - 1];
1023                 dev->rbuf[i - 1] = dev->procbyte;
1024                 j++;
1025         }
1026         count = j;
1027
1028         dev->rpos = dev->rlen + 1;
1029
1030         /* Clear T1Active */
1031         DEBUGP(4, dev, "Clear T1Active\n");
1032         dev->flags1 &= 0xdf;
1033         xoutb(dev->flags1, REG_FLAGS1(iobase));
1034
1035         xoutb(0, REG_FLAGS1(iobase));   /* clear detectCMM */
1036         /* last check before exit */
1037         if (!io_detect_cm4000(iobase, dev))
1038                 count = -ENODEV;
1039
1040         if (test_bit(IS_INVREV, &dev->flags) && count > 0)
1041                 str_invert_revert(dev->rbuf, count);
1042
1043         if (copy_to_user(buf, dev->rbuf, count))
1044                 return -EFAULT;
1045
1046 release_io:
1047         clear_bit(LOCK_IO, &dev->flags);
1048         wake_up_interruptible(&dev->ioq);
1049
1050         DEBUGP(2, dev, "<- cmm_read returns: rc = %Zi\n",
1051                (rc < 0 ? rc : count));
1052         return rc < 0 ? rc : count;
1053 }
1054
1055 static ssize_t cmm_write(struct file *filp, const char __user *buf,
1056                          size_t count, loff_t *ppos)
1057 {
1058         struct cm4000_dev *dev = (struct cm4000_dev *) filp->private_data;
1059         unsigned int iobase = dev->p_dev->io.BasePort1;
1060         unsigned short s;
1061         unsigned char tmp;
1062         unsigned char infolen;
1063         unsigned char sendT0;
1064         unsigned short nsend;
1065         unsigned short nr;
1066         ssize_t rc;
1067         int i;
1068
1069         DEBUGP(2, dev, "-> cmm_write(%s,%d)\n", current->comm, current->pid);
1070
1071         if (count == 0)         /* according to manpage */
1072                 return 0;
1073
1074         if (dev->proto == 0 && count < 4) {
1075                 /* T0 must have at least 4 bytes */
1076                 DEBUGP(4, dev, "T0 short write\n");
1077                 return -EIO;
1078         }
1079
1080         nr = count & 0x1ff;     /* max bytes to write */
1081
1082         sendT0 = dev->proto ? 0 : nr > 5 ? 0x08 : 0;
1083
1084         if (!pcmcia_dev_present(dev->p_dev) || /* device removed */
1085             test_bit(IS_CMM_ABSENT, &dev->flags))
1086                 return -ENODEV;
1087
1088         if (test_bit(IS_BAD_CSUM, &dev->flags)) {
1089                 DEBUGP(4, dev, "bad csum\n");
1090                 return -EIO;
1091         }
1092
1093         /*
1094          * wait for atr to become valid.
1095          * note: it is important to lock this code. if we dont, the monitor
1096          * could be run between test_bit and the call to sleep on the
1097          * atr-queue.  if *then* the monitor detects atr valid, it will wake up
1098          * any process on the atr-queue, *but* since we have been interrupted,
1099          * we do not yet sleep on this queue. this would result in a missed
1100          * wake_up and the calling process would sleep forever (until
1101          * interrupted).  also, do *not* restore_flags before sleep_on, because
1102          * this could result in the same situation!
1103          */
1104         if (wait_event_interruptible
1105             (dev->atrq,
1106              ((filp->f_flags & O_NONBLOCK)
1107               || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags) != 0)))) {
1108                 if (filp->f_flags & O_NONBLOCK)
1109                         return -EAGAIN;
1110                 return -ERESTARTSYS;
1111         }
1112
1113         if (test_bit(IS_ATR_VALID, &dev->flags) == 0) { /* invalid atr */
1114                 DEBUGP(4, dev, "invalid ATR\n");
1115                 return -EIO;
1116         }
1117
1118         /* lock io */
1119         if (wait_event_interruptible
1120             (dev->ioq,
1121              ((filp->f_flags & O_NONBLOCK)
1122               || (test_and_set_bit(LOCK_IO, (void *)&dev->flags) == 0)))) {
1123                 if (filp->f_flags & O_NONBLOCK)
1124                         return -EAGAIN;
1125                 return -ERESTARTSYS;
1126         }
1127
1128         if (copy_from_user(dev->sbuf, buf, ((count > 512) ? 512 : count)))
1129                 return -EFAULT;
1130
1131         rc = 0;
1132         dev->flags0 = inb(REG_FLAGS0(iobase));
1133         if ((dev->flags0 & 1) == 0      /* no smartcard inserted */
1134             || dev->flags0 == 0xff) {   /* no cardman inserted */
1135                 clear_bit(IS_ATR_VALID, &dev->flags);
1136                 if (dev->flags0 & 1) {
1137                         set_bit(IS_CMM_ABSENT, &dev->flags);
1138                         rc = -ENODEV;
1139                 } else {
1140                         DEBUGP(4, dev, "IO error\n");
1141                         rc = -EIO;
1142                 }
1143                 goto release_io;
1144         }
1145
1146         xoutb(0x80, REG_FLAGS0(iobase));        /* reset SM  */
1147
1148         if (!io_detect_cm4000(iobase, dev)) {
1149                 rc = -ENODEV;
1150                 goto release_io;
1151         }
1152
1153         /* reflect T=0 send/read mode in flags1 */
1154         dev->flags1 |= (sendT0);
1155
1156         set_cardparameter(dev);
1157
1158         /* dummy read, reset flag procedure received */
1159         tmp = inb(REG_FLAGS1(iobase));
1160
1161         dev->flags1 = 0x20      /* T_Active */
1162             | (sendT0)
1163             | (test_bit(IS_INVREV, &dev->flags) ? 2 : 0)/* inverse parity  */
1164             | (((dev->baudv - 1) & 0x0100) >> 8);       /* MSB-Baud */
1165         DEBUGP(1, dev, "set dev->flags1 = 0x%.2x\n", dev->flags1);
1166         xoutb(dev->flags1, REG_FLAGS1(iobase));
1167
1168         /* xmit data */
1169         DEBUGP(4, dev, "Xmit data\n");
1170         for (i = 0; i < nr; i++) {
1171                 if (i >= 256) {
1172                         dev->flags1 = 0x20      /* T_Active */
1173                             | (sendT0)  /* SendT0 */
1174                                 /* inverse parity: */
1175                             | (test_bit(IS_INVREV, &dev->flags) ? 2 : 0)
1176                             | (((dev->baudv - 1) & 0x0100) >> 8) /* MSB-Baud */
1177                             | 0x10;     /* set address high */
1178                         DEBUGP(4, dev, "dev->flags = 0x%.2x - set address "
1179                                "high\n", dev->flags1);
1180                         xoutb(dev->flags1, REG_FLAGS1(iobase));
1181                 }
1182                 if (test_bit(IS_INVREV, &dev->flags)) {
1183                         DEBUGP(4, dev, "Apply inverse convention for 0x%.2x "
1184                                 "-> 0x%.2x\n", (unsigned char)dev->sbuf[i],
1185                               invert_revert(dev->sbuf[i]));
1186                         xoutb(i, REG_BUF_ADDR(iobase));
1187                         xoutb(invert_revert(dev->sbuf[i]),
1188                               REG_BUF_DATA(iobase));
1189                 } else {
1190                         xoutb(i, REG_BUF_ADDR(iobase));
1191                         xoutb(dev->sbuf[i], REG_BUF_DATA(iobase));
1192                 }
1193         }
1194         DEBUGP(4, dev, "Xmit done\n");
1195
1196         if (dev->proto == 0) {
1197                 /* T=0 proto: 0 byte reply  */
1198                 if (nr == 4) {
1199                         DEBUGP(4, dev, "T=0 assumes 0 byte reply\n");
1200                         xoutb(i, REG_BUF_ADDR(iobase));
1201                         if (test_bit(IS_INVREV, &dev->flags))
1202                                 xoutb(0xff, REG_BUF_DATA(iobase));
1203                         else
1204                                 xoutb(0x00, REG_BUF_DATA(iobase));
1205                 }
1206
1207                 /* numSendBytes */
1208                 if (sendT0)
1209                         nsend = nr;
1210                 else {
1211                         if (nr == 4)
1212                                 nsend = 5;
1213                         else {
1214                                 nsend = 5 + (unsigned char)dev->sbuf[4];
1215                                 if (dev->sbuf[4] == 0)
1216                                         nsend += 0x100;
1217                         }
1218                 }
1219         } else
1220                 nsend = nr;
1221
1222         /* T0: output procedure byte */
1223         if (test_bit(IS_INVREV, &dev->flags)) {
1224                 DEBUGP(4, dev, "T=0 set Procedure byte (inverse-reverse) "
1225                        "0x%.2x\n", invert_revert(dev->sbuf[1]));
1226                 xoutb(invert_revert(dev->sbuf[1]), REG_NUM_BYTES(iobase));
1227         } else {
1228                 DEBUGP(4, dev, "T=0 set Procedure byte 0x%.2x\n", dev->sbuf[1]);
1229                 xoutb(dev->sbuf[1], REG_NUM_BYTES(iobase));
1230         }
1231
1232         DEBUGP(1, dev, "set NumSendBytes = 0x%.2x\n",
1233                (unsigned char)(nsend & 0xff));
1234         xoutb((unsigned char)(nsend & 0xff), REG_NUM_SEND(iobase));
1235
1236         DEBUGP(1, dev, "Trigger CARDMAN CONTROLLER (0x%.2x)\n",
1237                0x40     /* SM_Active */
1238               | (dev->flags0 & 2 ? 0 : 4)       /* power on if needed */
1239               |(dev->proto ? 0x10 : 0x08)       /* T=1/T=0 */
1240               |(nsend & 0x100) >> 8 /* MSB numSendBytes */ );
1241         xoutb(0x40              /* SM_Active */
1242               | (dev->flags0 & 2 ? 0 : 4)       /* power on if needed */
1243               |(dev->proto ? 0x10 : 0x08)       /* T=1/T=0 */
1244               |(nsend & 0x100) >> 8,    /* MSB numSendBytes */
1245               REG_FLAGS0(iobase));
1246
1247         /* wait for xmit done */
1248         if (dev->proto == 1) {
1249                 DEBUGP(4, dev, "Wait for xmit done\n");
1250                 for (i = 0; i < 1000; i++) {
1251                         if (inb(REG_FLAGS0(iobase)) & 0x08)
1252                                 break;
1253                         msleep_interruptible(10);
1254                 }
1255                 if (i == 1000) {
1256                         DEBUGP(4, dev, "timeout waiting for xmit done\n");
1257                         rc = -EIO;
1258                         goto release_io;
1259                 }
1260         }
1261
1262         /* T=1: wait for infoLen */
1263
1264         infolen = 0;
1265         if (dev->proto) {
1266                 /* wait until infoLen is valid */
1267                 for (i = 0; i < 6000; i++) {    /* max waiting time of 1 min */
1268                         io_read_num_rec_bytes(iobase, &s);
1269                         if (s >= 3) {
1270                                 infolen = inb(REG_FLAGS1(iobase));
1271                                 DEBUGP(4, dev, "infolen=%d\n", infolen);
1272                                 break;
1273                         }
1274                         msleep_interruptible(10);
1275                 }
1276                 if (i == 6000) {
1277                         DEBUGP(4, dev, "timeout waiting for infoLen\n");
1278                         rc = -EIO;
1279                         goto release_io;
1280                 }
1281         } else
1282                 clear_bit(IS_PROCBYTE_PRESENT, &dev->flags);
1283
1284         /* numRecBytes | bit9 of numRecytes */
1285         io_read_num_rec_bytes(iobase, &dev->rlen);
1286         for (i = 0; i < 600; i++) {     /* max waiting time of 2 sec */
1287                 if (dev->proto) {
1288                         if (dev->rlen >= infolen + 4)
1289                                 break;
1290                 }
1291                 msleep_interruptible(10);
1292                 /* numRecBytes | bit9 of numRecytes */
1293                 io_read_num_rec_bytes(iobase, &s);
1294                 if (s > dev->rlen) {
1295                         DEBUGP(1, dev, "NumRecBytes inc (reset timeout)\n");
1296                         i = 0;  /* reset timeout */
1297                         dev->rlen = s;
1298                 }
1299                 /* T=0: we are done when numRecBytes doesn't
1300                  *      increment any more and NoProcedureByte
1301                  *      is set and numRecBytes == bytes sent + 6
1302                  *      (header bytes + data + 1 for sw2)
1303                  *      except when the card replies an error
1304                  *      which means, no data will be sent back.
1305                  */
1306                 else if (dev->proto == 0) {
1307                         if ((inb(REG_BUF_ADDR(iobase)) & 0x80)) {
1308                                 /* no procedure byte received since last read */
1309                                 DEBUGP(1, dev, "NoProcedure byte set\n");
1310                                 /* i=0; */
1311                         } else {
1312                                 /* procedure byte received since last read */
1313                                 DEBUGP(1, dev, "NoProcedure byte unset "
1314                                         "(reset timeout)\n");
1315                                 dev->procbyte = inb(REG_FLAGS1(iobase));
1316                                 DEBUGP(1, dev, "Read procedure byte 0x%.2x\n",
1317                                       dev->procbyte);
1318                                 i = 0;  /* resettimeout */
1319                         }
1320                         if (inb(REG_FLAGS0(iobase)) & 0x08) {
1321                                 DEBUGP(1, dev, "T0Done flag (read reply)\n");
1322                                 break;
1323                         }
1324                 }
1325                 if (dev->proto)
1326                         infolen = inb(REG_FLAGS1(iobase));
1327         }
1328         if (i == 600) {
1329                 DEBUGP(1, dev, "timeout waiting for numRecBytes\n");
1330                 rc = -EIO;
1331                 goto release_io;
1332         } else {
1333                 if (dev->proto == 0) {
1334                         DEBUGP(1, dev, "Wait for T0Done bit to be  set\n");
1335                         for (i = 0; i < 1000; i++) {
1336                                 if (inb(REG_FLAGS0(iobase)) & 0x08)
1337                                         break;
1338                                 msleep_interruptible(10);
1339                         }
1340                         if (i == 1000) {
1341                                 DEBUGP(1, dev, "timeout waiting for T0Done\n");
1342                                 rc = -EIO;
1343                                 goto release_io;
1344                         }
1345
1346                         dev->procbyte = inb(REG_FLAGS1(iobase));
1347                         DEBUGP(4, dev, "Read procedure byte 0x%.2x\n",
1348                               dev->procbyte);
1349
1350                         io_read_num_rec_bytes(iobase, &dev->rlen);
1351                         DEBUGP(4, dev, "Read NumRecBytes = %i\n", dev->rlen);
1352
1353                 }
1354         }
1355         /* T=1: read offset=zero, T=0: read offset=after challenge */
1356         dev->rpos = dev->proto ? 0 : nr == 4 ? 5 : nr > dev->rlen ? 5 : nr;
1357         DEBUGP(4, dev, "dev->rlen = %i,  dev->rpos = %i, nr = %i\n",
1358               dev->rlen, dev->rpos, nr);
1359
1360 release_io:
1361         DEBUGP(4, dev, "Reset SM\n");
1362         xoutb(0x80, REG_FLAGS0(iobase));        /* reset SM */
1363
1364         if (rc < 0) {
1365                 DEBUGP(4, dev, "Write failed but clear T_Active\n");
1366                 dev->flags1 &= 0xdf;
1367                 xoutb(dev->flags1, REG_FLAGS1(iobase));
1368         }
1369
1370         clear_bit(LOCK_IO, &dev->flags);
1371         wake_up_interruptible(&dev->ioq);
1372         wake_up_interruptible(&dev->readq);     /* tell read we have data */
1373
1374         /* ITSEC E2: clear write buffer */
1375         memset((char *)dev->sbuf, 0, 512);
1376
1377         /* return error or actually written bytes */
1378         DEBUGP(2, dev, "<- cmm_write\n");
1379         return rc < 0 ? rc : nr;
1380 }
1381
1382 static void start_monitor(struct cm4000_dev *dev)
1383 {
1384         DEBUGP(3, dev, "-> start_monitor\n");
1385         if (!dev->monitor_running) {
1386                 DEBUGP(5, dev, "create, init and add timer\n");
1387                 setup_timer(&dev->timer, monitor_card, (unsigned long)dev);
1388                 dev->monitor_running = 1;
1389                 mod_timer(&dev->timer, jiffies);
1390         } else
1391                 DEBUGP(5, dev, "monitor already running\n");
1392         DEBUGP(3, dev, "<- start_monitor\n");
1393 }
1394
1395 static void stop_monitor(struct cm4000_dev *dev)
1396 {
1397         DEBUGP(3, dev, "-> stop_monitor\n");
1398         if (dev->monitor_running) {
1399                 DEBUGP(5, dev, "stopping monitor\n");
1400                 terminate_monitor(dev);
1401                 /* reset monitor SM */
1402                 clear_bit(IS_ATR_VALID, &dev->flags);
1403                 clear_bit(IS_ATR_PRESENT, &dev->flags);
1404         } else
1405                 DEBUGP(5, dev, "monitor already stopped\n");
1406         DEBUGP(3, dev, "<- stop_monitor\n");
1407 }
1408
1409 static long cmm_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
1410 {
1411         struct cm4000_dev *dev = filp->private_data;
1412         unsigned int iobase = dev->p_dev->io.BasePort1;
1413         struct inode *inode = filp->f_path.dentry->d_inode;
1414         struct pcmcia_device *link;
1415         int size;
1416         int rc;
1417         void __user *argp = (void __user *)arg;
1418 #ifdef PCMCIA_DEBUG
1419         char *ioctl_names[CM_IOC_MAXNR + 1] = {
1420                 [_IOC_NR(CM_IOCGSTATUS)] "CM_IOCGSTATUS",
1421                 [_IOC_NR(CM_IOCGATR)] "CM_IOCGATR",
1422                 [_IOC_NR(CM_IOCARDOFF)] "CM_IOCARDOFF",
1423                 [_IOC_NR(CM_IOCSPTS)] "CM_IOCSPTS",
1424                 [_IOC_NR(CM_IOSDBGLVL)] "CM4000_DBGLVL",
1425         };
1426 #endif
1427         DEBUGP(3, dev, "cmm_ioctl(device=%d.%d) %s\n", imajor(inode),
1428                iminor(inode), ioctl_names[_IOC_NR(cmd)]);
1429
1430         lock_kernel();
1431         rc = -ENODEV;
1432         link = dev_table[iminor(inode)];
1433         if (!pcmcia_dev_present(link)) {
1434                 DEBUGP(4, dev, "DEV_OK false\n");
1435                 goto out;
1436         }
1437
1438         if (test_bit(IS_CMM_ABSENT, &dev->flags)) {
1439                 DEBUGP(4, dev, "CMM_ABSENT flag set\n");
1440                 goto out;
1441         }
1442         rc = -EINVAL;
1443
1444         if (_IOC_TYPE(cmd) != CM_IOC_MAGIC) {
1445                 DEBUGP(4, dev, "ioctype mismatch\n");
1446                 goto out;
1447         }
1448         if (_IOC_NR(cmd) > CM_IOC_MAXNR) {
1449                 DEBUGP(4, dev, "iocnr mismatch\n");
1450                 goto out;
1451         }
1452         size = _IOC_SIZE(cmd);
1453         rc = -EFAULT;
1454         DEBUGP(4, dev, "iocdir=%.4x iocr=%.4x iocw=%.4x iocsize=%d cmd=%.4x\n",
1455               _IOC_DIR(cmd), _IOC_READ, _IOC_WRITE, size, cmd);
1456
1457         if (_IOC_DIR(cmd) & _IOC_READ) {
1458                 if (!access_ok(VERIFY_WRITE, argp, size))
1459                         goto out;
1460         }
1461         if (_IOC_DIR(cmd) & _IOC_WRITE) {
1462                 if (!access_ok(VERIFY_READ, argp, size))
1463                         goto out;
1464         }
1465         rc = 0;
1466
1467         switch (cmd) {
1468         case CM_IOCGSTATUS:
1469                 DEBUGP(4, dev, " ... in CM_IOCGSTATUS\n");
1470                 {
1471                         int status;
1472
1473                         /* clear other bits, but leave inserted & powered as
1474                          * they are */
1475                         status = dev->flags0 & 3;
1476                         if (test_bit(IS_ATR_PRESENT, &dev->flags))
1477                                 status |= CM_ATR_PRESENT;
1478                         if (test_bit(IS_ATR_VALID, &dev->flags))
1479                                 status |= CM_ATR_VALID;
1480                         if (test_bit(IS_CMM_ABSENT, &dev->flags))
1481                                 status |= CM_NO_READER;
1482                         if (test_bit(IS_BAD_CARD, &dev->flags))
1483                                 status |= CM_BAD_CARD;
1484                         if (copy_to_user(argp, &status, sizeof(int)))
1485                                 rc = -EFAULT;
1486                 }
1487                 break;
1488         case CM_IOCGATR:
1489                 DEBUGP(4, dev, "... in CM_IOCGATR\n");
1490                 {
1491                         struct atreq __user *atreq = argp;
1492                         int tmp;
1493                         /* allow nonblocking io and being interrupted */
1494                         if (wait_event_interruptible
1495                             (dev->atrq,
1496                              ((filp->f_flags & O_NONBLOCK)
1497                               || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags)
1498                                   != 0)))) {
1499                                 if (filp->f_flags & O_NONBLOCK)
1500                                         rc = -EAGAIN;
1501                                 else
1502                                         rc = -ERESTARTSYS;
1503                                 break;
1504                         }
1505
1506                         rc = -EFAULT;
1507                         if (test_bit(IS_ATR_VALID, &dev->flags) == 0) {
1508                                 tmp = -1;
1509                                 if (copy_to_user(&(atreq->atr_len), &tmp,
1510                                                  sizeof(int)))
1511                                         break;
1512                         } else {
1513                                 if (copy_to_user(atreq->atr, dev->atr,
1514                                                  dev->atr_len))
1515                                         break;
1516
1517                                 tmp = dev->atr_len;
1518                                 if (copy_to_user(&(atreq->atr_len), &tmp, sizeof(int)))
1519                                         break;
1520                         }
1521                         rc = 0;
1522                         break;
1523                 }
1524         case CM_IOCARDOFF:
1525
1526 #ifdef PCMCIA_DEBUG
1527                 DEBUGP(4, dev, "... in CM_IOCARDOFF\n");
1528                 if (dev->flags0 & 0x01) {
1529                         DEBUGP(4, dev, "    Card inserted\n");
1530                 } else {
1531                         DEBUGP(2, dev, "    No card inserted\n");
1532                 }
1533                 if (dev->flags0 & 0x02) {
1534                         DEBUGP(4, dev, "    Card powered\n");
1535                 } else {
1536                         DEBUGP(2, dev, "    Card not powered\n");
1537                 }
1538 #endif
1539
1540                 /* is a card inserted and powered? */
1541                 if ((dev->flags0 & 0x01) && (dev->flags0 & 0x02)) {
1542
1543                         /* get IO lock */
1544                         if (wait_event_interruptible
1545                             (dev->ioq,
1546                              ((filp->f_flags & O_NONBLOCK)
1547                               || (test_and_set_bit(LOCK_IO, (void *)&dev->flags)
1548                                   == 0)))) {
1549                                 if (filp->f_flags & O_NONBLOCK)
1550                                         rc = -EAGAIN;
1551                                 else
1552                                         rc = -ERESTARTSYS;
1553                                 break;
1554                         }
1555                         /* Set Flags0 = 0x42 */
1556                         DEBUGP(4, dev, "Set Flags0=0x42 \n");
1557                         xoutb(0x42, REG_FLAGS0(iobase));
1558                         clear_bit(IS_ATR_PRESENT, &dev->flags);
1559                         clear_bit(IS_ATR_VALID, &dev->flags);
1560                         dev->mstate = M_CARDOFF;
1561                         clear_bit(LOCK_IO, &dev->flags);
1562                         if (wait_event_interruptible
1563                             (dev->atrq,
1564                              ((filp->f_flags & O_NONBLOCK)
1565                               || (test_bit(IS_ATR_VALID, (void *)&dev->flags) !=
1566                                   0)))) {
1567                                 if (filp->f_flags & O_NONBLOCK)
1568                                         rc = -EAGAIN;
1569                                 else
1570                                         rc = -ERESTARTSYS;
1571                                 break;
1572                         }
1573                 }
1574                 /* release lock */
1575                 clear_bit(LOCK_IO, &dev->flags);
1576                 wake_up_interruptible(&dev->ioq);
1577
1578                 return 0;
1579         case CM_IOCSPTS:
1580                 {
1581                         struct ptsreq krnptsreq;
1582
1583                         if (copy_from_user(&krnptsreq, argp,
1584                                            sizeof(struct ptsreq))) {
1585                                 rc = -EFAULT;
1586                                 break;
1587                         }
1588
1589                         rc = 0;
1590                         DEBUGP(4, dev, "... in CM_IOCSPTS\n");
1591                         /* wait for ATR to get valid */
1592                         if (wait_event_interruptible
1593                             (dev->atrq,
1594                              ((filp->f_flags & O_NONBLOCK)
1595                               || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags)
1596                                   != 0)))) {
1597                                 if (filp->f_flags & O_NONBLOCK)
1598                                         rc = -EAGAIN;
1599                                 else
1600                                         rc = -ERESTARTSYS;
1601                                 break;
1602                         }
1603                         /* get IO lock */
1604                         if (wait_event_interruptible
1605                             (dev->ioq,
1606                              ((filp->f_flags & O_NONBLOCK)
1607                               || (test_and_set_bit(LOCK_IO, (void *)&dev->flags)
1608                                   == 0)))) {
1609                                 if (filp->f_flags & O_NONBLOCK)
1610                                         rc = -EAGAIN;
1611                                 else
1612                                         rc = -ERESTARTSYS;
1613                                 break;
1614                         }
1615
1616                         if ((rc = set_protocol(dev, &krnptsreq)) != 0) {
1617                                 /* auto power_on again */
1618                                 dev->mstate = M_FETCH_ATR;
1619                                 clear_bit(IS_ATR_VALID, &dev->flags);
1620                         }
1621                         /* release lock */
1622                         clear_bit(LOCK_IO, &dev->flags);
1623                         wake_up_interruptible(&dev->ioq);
1624
1625                 }
1626                 break;
1627 #ifdef PCMCIA_DEBUG
1628         case CM_IOSDBGLVL:      /* set debug log level */
1629                 {
1630                         int old_pc_debug = 0;
1631
1632                         old_pc_debug = pc_debug;
1633                         if (copy_from_user(&pc_debug, argp, sizeof(int)))
1634                                 rc = -EFAULT;
1635                         else if (old_pc_debug != pc_debug)
1636                                 DEBUGP(0, dev, "Changed debug log level "
1637                                        "to %i\n", pc_debug);
1638                 }
1639                 break;
1640 #endif
1641         default:
1642                 DEBUGP(4, dev, "... in default (unknown IOCTL code)\n");
1643                 rc = -ENOTTY;
1644         }
1645 out:
1646         unlock_kernel();
1647         return rc;
1648 }
1649
1650 static int cmm_open(struct inode *inode, struct file *filp)
1651 {
1652         struct cm4000_dev *dev;
1653         struct pcmcia_device *link;
1654         int minor = iminor(inode);
1655         int ret;
1656
1657         if (minor >= CM4000_MAX_DEV)
1658                 return -ENODEV;
1659
1660         lock_kernel();
1661         link = dev_table[minor];
1662         if (link == NULL || !pcmcia_dev_present(link)) {
1663                 ret = -ENODEV;
1664                 goto out;
1665         }
1666
1667         if (link->open) {
1668                 ret = -EBUSY;
1669                 goto out;
1670         }
1671
1672         dev = link->priv;
1673         filp->private_data = dev;
1674
1675         DEBUGP(2, dev, "-> cmm_open(device=%d.%d process=%s,%d)\n",
1676               imajor(inode), minor, current->comm, current->pid);
1677
1678         /* init device variables, they may be "polluted" after close
1679          * or, the device may never have been closed (i.e. open failed)
1680          */
1681
1682         ZERO_DEV(dev);
1683
1684         /* opening will always block since the
1685          * monitor will be started by open, which
1686          * means we have to wait for ATR becoming
1687          * vaild = block until valid (or card
1688          * inserted)
1689          */
1690         if (filp->f_flags & O_NONBLOCK) {
1691                 ret = -EAGAIN;
1692                 goto out;
1693         }
1694
1695         dev->mdelay = T_50MSEC;
1696
1697         /* start monitoring the cardstatus */
1698         start_monitor(dev);
1699
1700         link->open = 1;         /* only one open per device */
1701
1702         DEBUGP(2, dev, "<- cmm_open\n");
1703         ret = nonseekable_open(inode, filp);
1704 out:
1705         unlock_kernel();
1706         return ret;
1707 }
1708
1709 static int cmm_close(struct inode *inode, struct file *filp)
1710 {
1711         struct cm4000_dev *dev;
1712         struct pcmcia_device *link;
1713         int minor = iminor(inode);
1714
1715         if (minor >= CM4000_MAX_DEV)
1716                 return -ENODEV;
1717
1718         link = dev_table[minor];
1719         if (link == NULL)
1720                 return -ENODEV;
1721
1722         dev = link->priv;
1723
1724         DEBUGP(2, dev, "-> cmm_close(maj/min=%d.%d)\n",
1725                imajor(inode), minor);
1726
1727         stop_monitor(dev);
1728
1729         ZERO_DEV(dev);
1730
1731         link->open = 0;         /* only one open per device */
1732         wake_up(&dev->devq);    /* socket removed? */
1733
1734         DEBUGP(2, dev, "cmm_close\n");
1735         return 0;
1736 }
1737
1738 static void cmm_cm4000_release(struct pcmcia_device * link)
1739 {
1740         struct cm4000_dev *dev = link->priv;
1741
1742         /* dont terminate the monitor, rather rely on
1743          * close doing that for us.
1744          */
1745         DEBUGP(3, dev, "-> cmm_cm4000_release\n");
1746         while (link->open) {
1747                 printk(KERN_INFO MODULE_NAME ": delaying release until "
1748                        "process has terminated\n");
1749                 /* note: don't interrupt us:
1750                  * close the applications which own
1751                  * the devices _first_ !
1752                  */
1753                 wait_event(dev->devq, (link->open == 0));
1754         }
1755         /* dev->devq=NULL;      this cannot be zeroed earlier */
1756         DEBUGP(3, dev, "<- cmm_cm4000_release\n");
1757         return;
1758 }
1759
1760 /*==== Interface to PCMCIA Layer =======================================*/
1761
1762 static int cm4000_config_check(struct pcmcia_device *p_dev,
1763                                cistpl_cftable_entry_t *cfg,
1764                                cistpl_cftable_entry_t *dflt,
1765                                unsigned int vcc,
1766                                void *priv_data)
1767 {
1768         if (!cfg->io.nwin)
1769                 return -ENODEV;
1770
1771         /* Get the IOaddr */
1772         p_dev->io.BasePort1 = cfg->io.win[0].base;
1773         p_dev->io.NumPorts1 = cfg->io.win[0].len;
1774         p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
1775         if (!(cfg->io.flags & CISTPL_IO_8BIT))
1776                 p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
1777         if (!(cfg->io.flags & CISTPL_IO_16BIT))
1778                 p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
1779         p_dev->io.IOAddrLines = cfg->io.flags & CISTPL_IO_LINES_MASK;
1780
1781         return pcmcia_request_io(p_dev, &p_dev->io);
1782 }
1783
1784 static int cm4000_config(struct pcmcia_device * link, int devno)
1785 {
1786         struct cm4000_dev *dev;
1787
1788         /* read the config-tuples */
1789         if (pcmcia_loop_config(link, cm4000_config_check, NULL))
1790                 goto cs_release;
1791
1792         link->conf.IntType = 00000002;
1793
1794         if (pcmcia_request_configuration(link, &link->conf))
1795                 goto cs_release;
1796
1797         dev = link->priv;
1798         sprintf(dev->node.dev_name, DEVICE_NAME "%d", devno);
1799         dev->node.major = major;
1800         dev->node.minor = devno;
1801         dev->node.next = NULL;
1802         link->dev_node = &dev->node;
1803
1804         return 0;
1805
1806 cs_release:
1807         cm4000_release(link);
1808         return -ENODEV;
1809 }
1810
1811 static int cm4000_suspend(struct pcmcia_device *link)
1812 {
1813         struct cm4000_dev *dev;
1814
1815         dev = link->priv;
1816         stop_monitor(dev);
1817
1818         return 0;
1819 }
1820
1821 static int cm4000_resume(struct pcmcia_device *link)
1822 {
1823         struct cm4000_dev *dev;
1824
1825         dev = link->priv;
1826         if (link->open)
1827                 start_monitor(dev);
1828
1829         return 0;
1830 }
1831
1832 static void cm4000_release(struct pcmcia_device *link)
1833 {
1834         cmm_cm4000_release(link);       /* delay release until device closed */
1835         pcmcia_disable_device(link);
1836 }
1837
1838 static int cm4000_probe(struct pcmcia_device *link)
1839 {
1840         struct cm4000_dev *dev;
1841         int i, ret;
1842
1843         for (i = 0; i < CM4000_MAX_DEV; i++)
1844                 if (dev_table[i] == NULL)
1845                         break;
1846
1847         if (i == CM4000_MAX_DEV) {
1848                 printk(KERN_NOTICE MODULE_NAME ": all devices in use\n");
1849                 return -ENODEV;
1850         }
1851
1852         /* create a new cm4000_cs device */
1853         dev = kzalloc(sizeof(struct cm4000_dev), GFP_KERNEL);
1854         if (dev == NULL)
1855                 return -ENOMEM;
1856
1857         dev->p_dev = link;
1858         link->priv = dev;
1859         link->conf.IntType = INT_MEMORY_AND_IO;
1860         dev_table[i] = link;
1861
1862         init_waitqueue_head(&dev->devq);
1863         init_waitqueue_head(&dev->ioq);
1864         init_waitqueue_head(&dev->atrq);
1865         init_waitqueue_head(&dev->readq);
1866
1867         ret = cm4000_config(link, i);
1868         if (ret) {
1869                 dev_table[i] = NULL;
1870                 kfree(dev);
1871                 return ret;
1872         }
1873
1874         device_create(cmm_class, NULL, MKDEV(major, i), NULL, "cmm%d", i);
1875
1876         return 0;
1877 }
1878
1879 static void cm4000_detach(struct pcmcia_device *link)
1880 {
1881         struct cm4000_dev *dev = link->priv;
1882         int devno;
1883
1884         /* find device */
1885         for (devno = 0; devno < CM4000_MAX_DEV; devno++)
1886                 if (dev_table[devno] == link)
1887                         break;
1888         if (devno == CM4000_MAX_DEV)
1889                 return;
1890
1891         stop_monitor(dev);
1892
1893         cm4000_release(link);
1894
1895         dev_table[devno] = NULL;
1896         kfree(dev);
1897
1898         device_destroy(cmm_class, MKDEV(major, devno));
1899
1900         return;
1901 }
1902
1903 static const struct file_operations cm4000_fops = {
1904         .owner  = THIS_MODULE,
1905         .read   = cmm_read,
1906         .write  = cmm_write,
1907         .unlocked_ioctl = cmm_ioctl,
1908         .open   = cmm_open,
1909         .release= cmm_close,
1910 };
1911
1912 static struct pcmcia_device_id cm4000_ids[] = {
1913         PCMCIA_DEVICE_MANF_CARD(0x0223, 0x0002),
1914         PCMCIA_DEVICE_PROD_ID12("CardMan", "4000", 0x2FB368CA, 0xA2BD8C39),
1915         PCMCIA_DEVICE_NULL,
1916 };
1917 MODULE_DEVICE_TABLE(pcmcia, cm4000_ids);
1918
1919 static struct pcmcia_driver cm4000_driver = {
1920         .owner    = THIS_MODULE,
1921         .drv      = {
1922                 .name = "cm4000_cs",
1923                 },
1924         .probe    = cm4000_probe,
1925         .remove   = cm4000_detach,
1926         .suspend  = cm4000_suspend,
1927         .resume   = cm4000_resume,
1928         .id_table = cm4000_ids,
1929 };
1930
1931 static int __init cmm_init(void)
1932 {
1933         int rc;
1934
1935         printk(KERN_INFO "%s\n", version);
1936
1937         cmm_class = class_create(THIS_MODULE, "cardman_4000");
1938         if (IS_ERR(cmm_class))
1939                 return PTR_ERR(cmm_class);
1940
1941         major = register_chrdev(0, DEVICE_NAME, &cm4000_fops);
1942         if (major < 0) {
1943                 printk(KERN_WARNING MODULE_NAME
1944                         ": could not get major number\n");
1945                 class_destroy(cmm_class);
1946                 return major;
1947         }
1948
1949         rc = pcmcia_register_driver(&cm4000_driver);
1950         if (rc < 0) {
1951                 unregister_chrdev(major, DEVICE_NAME);
1952                 class_destroy(cmm_class);
1953                 return rc;
1954         }
1955
1956         return 0;
1957 }
1958
1959 static void __exit cmm_exit(void)
1960 {
1961         printk(KERN_INFO MODULE_NAME ": unloading\n");
1962         pcmcia_unregister_driver(&cm4000_driver);
1963         unregister_chrdev(major, DEVICE_NAME);
1964         class_destroy(cmm_class);
1965 };
1966
1967 module_init(cmm_init);
1968 module_exit(cmm_exit);
1969 MODULE_LICENSE("Dual BSD/GPL");