linux/drivers/char/pcmcia/cm4000_cs.c
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   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 process/coding-style.rst
  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/mutex.h>
  34#include <linux/uaccess.h>
  35#include <linux/io.h>
  36
  37#include <pcmcia/cistpl.h>
  38#include <pcmcia/cisreg.h>
  39#include <pcmcia/ciscode.h>
  40#include <pcmcia/ds.h>
  41
  42#include <linux/cm4000_cs.h>
  43
  44/* #define ATR_CSUM */
  45
  46#define reader_to_dev(x)        (&x->p_dev->dev)
  47
  48/* n (debug level) is ignored */
  49/* additional debug output may be enabled by re-compiling with
  50 * CM4000_DEBUG set */
  51/* #define CM4000_DEBUG */
  52#define DEBUGP(n, rdr, x, args...) do {                 \
  53                dev_dbg(reader_to_dev(rdr), "%s:" x,    \
  54                           __func__ , ## args);         \
  55        } while (0)
  56
  57static DEFINE_MUTEX(cmm_mutex);
  58
  59#define T_1SEC          (HZ)
  60#define T_10MSEC        msecs_to_jiffies(10)
  61#define T_20MSEC        msecs_to_jiffies(20)
  62#define T_40MSEC        msecs_to_jiffies(40)
  63#define T_50MSEC        msecs_to_jiffies(50)
  64#define T_100MSEC       msecs_to_jiffies(100)
  65#define T_500MSEC       msecs_to_jiffies(500)
  66
  67static void cm4000_release(struct pcmcia_device *link);
  68
  69static int major;               /* major number we get from the kernel */
  70
  71/* note: the first state has to have number 0 always */
  72
  73#define M_FETCH_ATR     0
  74#define M_TIMEOUT_WAIT  1
  75#define M_READ_ATR_LEN  2
  76#define M_READ_ATR      3
  77#define M_ATR_PRESENT   4
  78#define M_BAD_CARD      5
  79#define M_CARDOFF       6
  80
  81#define LOCK_IO                 0
  82#define LOCK_MONITOR            1
  83
  84#define IS_AUTOPPS_ACT           6
  85#define IS_PROCBYTE_PRESENT      7
  86#define IS_INVREV                8
  87#define IS_ANY_T0                9
  88#define IS_ANY_T1               10
  89#define IS_ATR_PRESENT          11
  90#define IS_ATR_VALID            12
  91#define IS_CMM_ABSENT           13
  92#define IS_BAD_LENGTH           14
  93#define IS_BAD_CSUM             15
  94#define IS_BAD_CARD             16
  95
  96#define REG_FLAGS0(x)           (x + 0)
  97#define REG_FLAGS1(x)           (x + 1)
  98#define REG_NUM_BYTES(x)        (x + 2)
  99#define REG_BUF_ADDR(x)         (x + 3)
 100#define REG_BUF_DATA(x)         (x + 4)
 101#define REG_NUM_SEND(x)         (x + 5)
 102#define REG_BAUDRATE(x)         (x + 6)
 103#define REG_STOPBITS(x)         (x + 7)
 104
 105struct cm4000_dev {
 106        struct pcmcia_device *p_dev;
 107
 108        unsigned char atr[MAX_ATR];
 109        unsigned char rbuf[512];
 110        unsigned char sbuf[512];
 111
 112        wait_queue_head_t devq;         /* when removing cardman must not be
 113                                           zeroed! */
 114
 115        wait_queue_head_t ioq;          /* if IO is locked, wait on this Q */
 116        wait_queue_head_t atrq;         /* wait for ATR valid */
 117        wait_queue_head_t readq;        /* used by write to wake blk.read */
 118
 119        /* warning: do not move this fields.
 120         * initialising to zero depends on it - see ZERO_DEV below.  */
 121        unsigned char atr_csum;
 122        unsigned char atr_len_retry;
 123        unsigned short atr_len;
 124        unsigned short rlen;    /* bytes avail. after write */
 125        unsigned short rpos;    /* latest read pos. write zeroes */
 126        unsigned char procbyte; /* T=0 procedure byte */
 127        unsigned char mstate;   /* state of card monitor */
 128        unsigned char cwarn;    /* slow down warning */
 129        unsigned char flags0;   /* cardman IO-flags 0 */
 130        unsigned char flags1;   /* cardman IO-flags 1 */
 131        unsigned int mdelay;    /* variable monitor speeds, in jiffies */
 132
 133        unsigned int baudv;     /* baud value for speed */
 134        unsigned char ta1;
 135        unsigned char proto;    /* T=0, T=1, ... */
 136        unsigned long flags;    /* lock+flags (MONITOR,IO,ATR) * for concurrent
 137                                   access */
 138
 139        unsigned char pts[4];
 140
 141        struct timer_list timer;        /* used to keep monitor running */
 142        int monitor_running;
 143};
 144
 145#define ZERO_DEV(dev)                                           \
 146        memset(&dev->atr_csum,0,                                \
 147                sizeof(struct cm4000_dev) -                     \
 148                offsetof(struct cm4000_dev, atr_csum))
 149
 150static struct pcmcia_device *dev_table[CM4000_MAX_DEV];
 151static struct class *cmm_class;
 152
 153/* This table doesn't use spaces after the comma between fields and thus
 154 * violates process/coding-style.rst.  However, I don't really think wrapping it around will
 155 * make it any clearer to read -HW */
 156static unsigned char fi_di_table[10][14] = {
 157/*FI     00   01   02   03   04   05   06   07   08   09   10   11   12   13 */
 158/*DI */
 159/* 0 */ {0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11},
 160/* 1 */ {0x01,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x91,0x11,0x11,0x11,0x11},
 161/* 2 */ {0x02,0x12,0x22,0x32,0x11,0x11,0x11,0x11,0x11,0x92,0xA2,0xB2,0x11,0x11},
 162/* 3 */ {0x03,0x13,0x23,0x33,0x43,0x53,0x63,0x11,0x11,0x93,0xA3,0xB3,0xC3,0xD3},
 163/* 4 */ {0x04,0x14,0x24,0x34,0x44,0x54,0x64,0x11,0x11,0x94,0xA4,0xB4,0xC4,0xD4},
 164/* 5 */ {0x00,0x15,0x25,0x35,0x45,0x55,0x65,0x11,0x11,0x95,0xA5,0xB5,0xC5,0xD5},
 165/* 6 */ {0x06,0x16,0x26,0x36,0x46,0x56,0x66,0x11,0x11,0x96,0xA6,0xB6,0xC6,0xD6},
 166/* 7 */ {0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11},
 167/* 8 */ {0x08,0x11,0x28,0x38,0x48,0x58,0x68,0x11,0x11,0x98,0xA8,0xB8,0xC8,0xD8},
 168/* 9 */ {0x09,0x19,0x29,0x39,0x49,0x59,0x69,0x11,0x11,0x99,0xA9,0xB9,0xC9,0xD9}
 169};
 170
 171#ifndef CM4000_DEBUG
 172#define xoutb   outb
 173#define xinb    inb
 174#else
 175static inline void xoutb(unsigned char val, unsigned short port)
 176{
 177        pr_debug("outb(val=%.2x,port=%.4x)\n", val, port);
 178        outb(val, port);
 179}
 180static inline unsigned char xinb(unsigned short port)
 181{
 182        unsigned char val;
 183
 184        val = inb(port);
 185        pr_debug("%.2x=inb(%.4x)\n", val, port);
 186
 187        return val;
 188}
 189#endif
 190
 191static inline unsigned char invert_revert(unsigned char ch)
 192{
 193        return bitrev8(~ch);
 194}
 195
 196static void str_invert_revert(unsigned char *b, int len)
 197{
 198        int i;
 199
 200        for (i = 0; i < len; i++)
 201                b[i] = invert_revert(b[i]);
 202}
 203
 204#define ATRLENCK(dev,pos) \
 205        if (pos>=dev->atr_len || pos>=MAX_ATR) \
 206                goto return_0;
 207
 208static unsigned int calc_baudv(unsigned char fidi)
 209{
 210        unsigned int wcrcf, wbrcf, fi_rfu, di_rfu;
 211
 212        fi_rfu = 372;
 213        di_rfu = 1;
 214
 215        /* FI */
 216        switch ((fidi >> 4) & 0x0F) {
 217        case 0x00:
 218                wcrcf = 372;
 219                break;
 220        case 0x01:
 221                wcrcf = 372;
 222                break;
 223        case 0x02:
 224                wcrcf = 558;
 225                break;
 226        case 0x03:
 227                wcrcf = 744;
 228                break;
 229        case 0x04:
 230                wcrcf = 1116;
 231                break;
 232        case 0x05:
 233                wcrcf = 1488;
 234                break;
 235        case 0x06:
 236                wcrcf = 1860;
 237                break;
 238        case 0x07:
 239                wcrcf = fi_rfu;
 240                break;
 241        case 0x08:
 242                wcrcf = fi_rfu;
 243                break;
 244        case 0x09:
 245                wcrcf = 512;
 246                break;
 247        case 0x0A:
 248                wcrcf = 768;
 249                break;
 250        case 0x0B:
 251                wcrcf = 1024;
 252                break;
 253        case 0x0C:
 254                wcrcf = 1536;
 255                break;
 256        case 0x0D:
 257                wcrcf = 2048;
 258                break;
 259        default:
 260                wcrcf = fi_rfu;
 261                break;
 262        }
 263
 264        /* DI */
 265        switch (fidi & 0x0F) {
 266        case 0x00:
 267                wbrcf = di_rfu;
 268                break;
 269        case 0x01:
 270                wbrcf = 1;
 271                break;
 272        case 0x02:
 273                wbrcf = 2;
 274                break;
 275        case 0x03:
 276                wbrcf = 4;
 277                break;
 278        case 0x04:
 279                wbrcf = 8;
 280                break;
 281        case 0x05:
 282                wbrcf = 16;
 283                break;
 284        case 0x06:
 285                wbrcf = 32;
 286                break;
 287        case 0x07:
 288                wbrcf = di_rfu;
 289                break;
 290        case 0x08:
 291                wbrcf = 12;
 292                break;
 293        case 0x09:
 294                wbrcf = 20;
 295                break;
 296        default:
 297                wbrcf = di_rfu;
 298                break;
 299        }
 300
 301        return (wcrcf / wbrcf);
 302}
 303
 304static unsigned short io_read_num_rec_bytes(unsigned int iobase,
 305                                            unsigned short *s)
 306{
 307        unsigned short tmp;
 308
 309        tmp = *s = 0;
 310        do {
 311                *s = tmp;
 312                tmp = inb(REG_NUM_BYTES(iobase)) |
 313                                (inb(REG_FLAGS0(iobase)) & 4 ? 0x100 : 0);
 314        } while (tmp != *s);
 315
 316        return *s;
 317}
 318
 319static int parse_atr(struct cm4000_dev *dev)
 320{
 321        unsigned char any_t1, any_t0;
 322        unsigned char ch, ifno;
 323        int ix, done;
 324
 325        DEBUGP(3, dev, "-> parse_atr: dev->atr_len = %i\n", dev->atr_len);
 326
 327        if (dev->atr_len < 3) {
 328                DEBUGP(5, dev, "parse_atr: atr_len < 3\n");
 329                return 0;
 330        }
 331
 332        if (dev->atr[0] == 0x3f)
 333                set_bit(IS_INVREV, &dev->flags);
 334        else
 335                clear_bit(IS_INVREV, &dev->flags);
 336        ix = 1;
 337        ifno = 1;
 338        ch = dev->atr[1];
 339        dev->proto = 0;         /* XXX PROTO */
 340        any_t1 = any_t0 = done = 0;
 341        dev->ta1 = 0x11;        /* defaults to 9600 baud */
 342        do {
 343                if (ifno == 1 && (ch & 0x10)) {
 344                        /* read first interface byte and TA1 is present */
 345                        dev->ta1 = dev->atr[2];
 346                        DEBUGP(5, dev, "Card says FiDi is 0x%.2x\n", dev->ta1);
 347                        ifno++;
 348                } else if ((ifno == 2) && (ch & 0x10)) { /* TA(2) */
 349                        dev->ta1 = 0x11;
 350                        ifno++;
 351                }
 352
 353                DEBUGP(5, dev, "Yi=%.2x\n", ch & 0xf0);
 354                ix += ((ch & 0x10) >> 4)        /* no of int.face chars */
 355                    +((ch & 0x20) >> 5)
 356                    + ((ch & 0x40) >> 6)
 357                    + ((ch & 0x80) >> 7);
 358                /* ATRLENCK(dev,ix); */
 359                if (ch & 0x80) {        /* TDi */
 360                        ch = dev->atr[ix];
 361                        if ((ch & 0x0f)) {
 362                                any_t1 = 1;
 363                                DEBUGP(5, dev, "card is capable of T=1\n");
 364                        } else {
 365                                any_t0 = 1;
 366                                DEBUGP(5, dev, "card is capable of T=0\n");
 367                        }
 368                } else
 369                        done = 1;
 370        } while (!done);
 371
 372        DEBUGP(5, dev, "ix=%d noHist=%d any_t1=%d\n",
 373              ix, dev->atr[1] & 15, any_t1);
 374        if (ix + 1 + (dev->atr[1] & 0x0f) + any_t1 != dev->atr_len) {
 375                DEBUGP(5, dev, "length error\n");
 376                return 0;
 377        }
 378        if (any_t0)
 379                set_bit(IS_ANY_T0, &dev->flags);
 380
 381        if (any_t1) {           /* compute csum */
 382                dev->atr_csum = 0;
 383#ifdef ATR_CSUM
 384                for (i = 1; i < dev->atr_len; i++)
 385                        dev->atr_csum ^= dev->atr[i];
 386                if (dev->atr_csum) {
 387                        set_bit(IS_BAD_CSUM, &dev->flags);
 388                        DEBUGP(5, dev, "bad checksum\n");
 389                        goto return_0;
 390                }
 391#endif
 392                if (any_t0 == 0)
 393                        dev->proto = 1; /* XXX PROTO */
 394                set_bit(IS_ANY_T1, &dev->flags);
 395        }
 396
 397        return 1;
 398}
 399
 400struct card_fixup {
 401        char atr[12];
 402        u_int8_t atr_len;
 403        u_int8_t stopbits;
 404};
 405
 406static struct card_fixup card_fixups[] = {
 407        {       /* ACOS */
 408                .atr = { 0x3b, 0xb3, 0x11, 0x00, 0x00, 0x41, 0x01 },
 409                .atr_len = 7,
 410                .stopbits = 0x03,
 411        },
 412        {       /* Motorola */
 413                .atr = {0x3b, 0x76, 0x13, 0x00, 0x00, 0x80, 0x62, 0x07,
 414                        0x41, 0x81, 0x81 },
 415                .atr_len = 11,
 416                .stopbits = 0x04,
 417        },
 418};
 419
 420static void set_cardparameter(struct cm4000_dev *dev)
 421{
 422        int i;
 423        unsigned int iobase = dev->p_dev->resource[0]->start;
 424        u_int8_t stopbits = 0x02; /* ISO default */
 425
 426        DEBUGP(3, dev, "-> set_cardparameter\n");
 427
 428        dev->flags1 = dev->flags1 | (((dev->baudv - 1) & 0x0100) >> 8);
 429        xoutb(dev->flags1, REG_FLAGS1(iobase));
 430        DEBUGP(5, dev, "flags1 = 0x%02x\n", dev->flags1);
 431
 432        /* set baudrate */
 433        xoutb((unsigned char)((dev->baudv - 1) & 0xFF), REG_BAUDRATE(iobase));
 434
 435        DEBUGP(5, dev, "baudv = %i -> write 0x%02x\n", dev->baudv,
 436              ((dev->baudv - 1) & 0xFF));
 437
 438        /* set stopbits */
 439        for (i = 0; i < ARRAY_SIZE(card_fixups); i++) {
 440                if (!memcmp(dev->atr, card_fixups[i].atr,
 441                            card_fixups[i].atr_len))
 442                        stopbits = card_fixups[i].stopbits;
 443        }
 444        xoutb(stopbits, REG_STOPBITS(iobase));
 445
 446        DEBUGP(3, dev, "<- set_cardparameter\n");
 447}
 448
 449static int set_protocol(struct cm4000_dev *dev, struct ptsreq *ptsreq)
 450{
 451
 452        unsigned long tmp, i;
 453        unsigned short num_bytes_read;
 454        unsigned char pts_reply[4];
 455        ssize_t rc;
 456        unsigned int iobase = dev->p_dev->resource[0]->start;
 457
 458        rc = 0;
 459
 460        DEBUGP(3, dev, "-> set_protocol\n");
 461        DEBUGP(5, dev, "ptsreq->Protocol = 0x%.8x, ptsreq->Flags=0x%.8x, "
 462                 "ptsreq->pts1=0x%.2x, ptsreq->pts2=0x%.2x, "
 463                 "ptsreq->pts3=0x%.2x\n", (unsigned int)ptsreq->protocol,
 464                 (unsigned int)ptsreq->flags, ptsreq->pts1, ptsreq->pts2,
 465                 ptsreq->pts3);
 466
 467        /* Fill PTS structure */
 468        dev->pts[0] = 0xff;
 469        dev->pts[1] = 0x00;
 470        tmp = ptsreq->protocol;
 471        while ((tmp = (tmp >> 1)) > 0)
 472                dev->pts[1]++;
 473        dev->proto = dev->pts[1];       /* Set new protocol */
 474        dev->pts[1] = (0x01 << 4) | (dev->pts[1]);
 475
 476        /* Correct Fi/Di according to CM4000 Fi/Di table */
 477        DEBUGP(5, dev, "Ta(1) from ATR is 0x%.2x\n", dev->ta1);
 478        /* set Fi/Di according to ATR TA(1) */
 479        dev->pts[2] = fi_di_table[dev->ta1 & 0x0F][(dev->ta1 >> 4) & 0x0F];
 480
 481        /* Calculate PCK character */
 482        dev->pts[3] = dev->pts[0] ^ dev->pts[1] ^ dev->pts[2];
 483
 484        DEBUGP(5, dev, "pts0=%.2x, pts1=%.2x, pts2=%.2x, pts3=%.2x\n",
 485               dev->pts[0], dev->pts[1], dev->pts[2], dev->pts[3]);
 486
 487        /* check card convention */
 488        if (test_bit(IS_INVREV, &dev->flags))
 489                str_invert_revert(dev->pts, 4);
 490
 491        /* reset SM */
 492        xoutb(0x80, REG_FLAGS0(iobase));
 493
 494        /* Enable access to the message buffer */
 495        DEBUGP(5, dev, "Enable access to the messages buffer\n");
 496        dev->flags1 = 0x20      /* T_Active */
 497            | (test_bit(IS_INVREV, &dev->flags) ? 0x02 : 0x00) /* inv parity */
 498            | ((dev->baudv >> 8) & 0x01);       /* MSB-baud */
 499        xoutb(dev->flags1, REG_FLAGS1(iobase));
 500
 501        DEBUGP(5, dev, "Enable message buffer -> flags1 = 0x%.2x\n",
 502               dev->flags1);
 503
 504        /* write challenge to the buffer */
 505        DEBUGP(5, dev, "Write challenge to buffer: ");
 506        for (i = 0; i < 4; i++) {
 507                xoutb(i, REG_BUF_ADDR(iobase));
 508                xoutb(dev->pts[i], REG_BUF_DATA(iobase));       /* buf data */
 509#ifdef CM4000_DEBUG
 510                pr_debug("0x%.2x ", dev->pts[i]);
 511        }
 512        pr_debug("\n");
 513#else
 514        }
 515#endif
 516
 517        /* set number of bytes to write */
 518        DEBUGP(5, dev, "Set number of bytes to write\n");
 519        xoutb(0x04, REG_NUM_SEND(iobase));
 520
 521        /* Trigger CARDMAN CONTROLLER */
 522        xoutb(0x50, REG_FLAGS0(iobase));
 523
 524        /* Monitor progress */
 525        /* wait for xmit done */
 526        DEBUGP(5, dev, "Waiting for NumRecBytes getting valid\n");
 527
 528        for (i = 0; i < 100; i++) {
 529                if (inb(REG_FLAGS0(iobase)) & 0x08) {
 530                        DEBUGP(5, dev, "NumRecBytes is valid\n");
 531                        break;
 532                }
 533                mdelay(10);
 534        }
 535        if (i == 100) {
 536                DEBUGP(5, dev, "Timeout waiting for NumRecBytes getting "
 537                       "valid\n");
 538                rc = -EIO;
 539                goto exit_setprotocol;
 540        }
 541
 542        DEBUGP(5, dev, "Reading NumRecBytes\n");
 543        for (i = 0; i < 100; i++) {
 544                io_read_num_rec_bytes(iobase, &num_bytes_read);
 545                if (num_bytes_read >= 4) {
 546                        DEBUGP(2, dev, "NumRecBytes = %i\n", num_bytes_read);
 547                        break;
 548                }
 549                mdelay(10);
 550        }
 551
 552        /* check whether it is a short PTS reply? */
 553        if (num_bytes_read == 3)
 554                i = 0;
 555
 556        if (i == 100) {
 557                DEBUGP(5, dev, "Timeout reading num_bytes_read\n");
 558                rc = -EIO;
 559                goto exit_setprotocol;
 560        }
 561
 562        DEBUGP(5, dev, "Reset the CARDMAN CONTROLLER\n");
 563        xoutb(0x80, REG_FLAGS0(iobase));
 564
 565        /* Read PPS reply */
 566        DEBUGP(5, dev, "Read PPS reply\n");
 567        for (i = 0; i < num_bytes_read; i++) {
 568                xoutb(i, REG_BUF_ADDR(iobase));
 569                pts_reply[i] = inb(REG_BUF_DATA(iobase));
 570        }
 571
 572#ifdef CM4000_DEBUG
 573        DEBUGP(2, dev, "PTSreply: ");
 574        for (i = 0; i < num_bytes_read; i++) {
 575                pr_debug("0x%.2x ", pts_reply[i]);
 576        }
 577        pr_debug("\n");
 578#endif  /* CM4000_DEBUG */
 579
 580        DEBUGP(5, dev, "Clear Tactive in Flags1\n");
 581        xoutb(0x20, REG_FLAGS1(iobase));
 582
 583        /* Compare ptsreq and ptsreply */
 584        if ((dev->pts[0] == pts_reply[0]) &&
 585            (dev->pts[1] == pts_reply[1]) &&
 586            (dev->pts[2] == pts_reply[2]) && (dev->pts[3] == pts_reply[3])) {
 587                /* setcardparameter according to PPS */
 588                dev->baudv = calc_baudv(dev->pts[2]);
 589                set_cardparameter(dev);
 590        } else if ((dev->pts[0] == pts_reply[0]) &&
 591                   ((dev->pts[1] & 0xef) == pts_reply[1]) &&
 592                   ((pts_reply[0] ^ pts_reply[1]) == pts_reply[2])) {
 593                /* short PTS reply, set card parameter to default values */
 594                dev->baudv = calc_baudv(0x11);
 595                set_cardparameter(dev);
 596        } else
 597                rc = -EIO;
 598
 599exit_setprotocol:
 600        DEBUGP(3, dev, "<- set_protocol\n");
 601        return rc;
 602}
 603
 604static int io_detect_cm4000(unsigned int iobase, struct cm4000_dev *dev)
 605{
 606
 607        /* note: statemachine is assumed to be reset */
 608        if (inb(REG_FLAGS0(iobase)) & 8) {
 609                clear_bit(IS_ATR_VALID, &dev->flags);
 610                set_bit(IS_CMM_ABSENT, &dev->flags);
 611                return 0;       /* detect CMM = 1 -> failure */
 612        }
 613        /* xoutb(0x40, REG_FLAGS1(iobase)); detectCMM */
 614        xoutb(dev->flags1 | 0x40, REG_FLAGS1(iobase));
 615        if ((inb(REG_FLAGS0(iobase)) & 8) == 0) {
 616                clear_bit(IS_ATR_VALID, &dev->flags);
 617                set_bit(IS_CMM_ABSENT, &dev->flags);
 618                return 0;       /* detect CMM=0 -> failure */
 619        }
 620        /* clear detectCMM again by restoring original flags1 */
 621        xoutb(dev->flags1, REG_FLAGS1(iobase));
 622        return 1;
 623}
 624
 625static void terminate_monitor(struct cm4000_dev *dev)
 626{
 627
 628        /* tell the monitor to stop and wait until
 629         * it terminates.
 630         */
 631        DEBUGP(3, dev, "-> terminate_monitor\n");
 632        wait_event_interruptible(dev->devq,
 633                                 test_and_set_bit(LOCK_MONITOR,
 634                                                  (void *)&dev->flags));
 635
 636        /* now, LOCK_MONITOR has been set.
 637         * allow a last cycle in the monitor.
 638         * the monitor will indicate that it has
 639         * finished by clearing this bit.
 640         */
 641        DEBUGP(5, dev, "Now allow last cycle of monitor!\n");
 642        while (test_bit(LOCK_MONITOR, (void *)&dev->flags))
 643                msleep(25);
 644
 645        DEBUGP(5, dev, "Delete timer\n");
 646        del_timer_sync(&dev->timer);
 647#ifdef CM4000_DEBUG
 648        dev->monitor_running = 0;
 649#endif
 650
 651        DEBUGP(3, dev, "<- terminate_monitor\n");
 652}
 653
 654/*
 655 * monitor the card every 50msec. as a side-effect, retrieve the
 656 * atr once a card is inserted. another side-effect of retrieving the
 657 * atr is that the card will be powered on, so there is no need to
 658 * power on the card explicitly from the application: the driver
 659 * is already doing that for you.
 660 */
 661
 662static void monitor_card(unsigned long p)
 663{
 664        struct cm4000_dev *dev = (struct cm4000_dev *) p;
 665        unsigned int iobase = dev->p_dev->resource[0]->start;
 666        unsigned short s;
 667        struct ptsreq ptsreq;
 668        int i, atrc;
 669
 670        DEBUGP(7, dev, "->  monitor_card\n");
 671
 672        /* if someone has set the lock for us: we're done! */
 673        if (test_and_set_bit(LOCK_MONITOR, &dev->flags)) {
 674                DEBUGP(4, dev, "About to stop monitor\n");
 675                /* no */
 676                dev->rlen =
 677                    dev->rpos =
 678                    dev->atr_csum = dev->atr_len_retry = dev->cwarn = 0;
 679                dev->mstate = M_FETCH_ATR;
 680                clear_bit(LOCK_MONITOR, &dev->flags);
 681                /* close et al. are sleeping on devq, so wake it */
 682                wake_up_interruptible(&dev->devq);
 683                DEBUGP(2, dev, "<- monitor_card (we are done now)\n");
 684                return;
 685        }
 686
 687        /* try to lock io: if it is already locked, just add another timer */
 688        if (test_and_set_bit(LOCK_IO, (void *)&dev->flags)) {
 689                DEBUGP(4, dev, "Couldn't get IO lock\n");
 690                goto return_with_timer;
 691        }
 692
 693        /* is a card/a reader inserted at all ? */
 694        dev->flags0 = xinb(REG_FLAGS0(iobase));
 695        DEBUGP(7, dev, "dev->flags0 = 0x%2x\n", dev->flags0);
 696        DEBUGP(7, dev, "smartcard present: %s\n",
 697               dev->flags0 & 1 ? "yes" : "no");
 698        DEBUGP(7, dev, "cardman present: %s\n",
 699               dev->flags0 == 0xff ? "no" : "yes");
 700
 701        if ((dev->flags0 & 1) == 0      /* no smartcard inserted */
 702            || dev->flags0 == 0xff) {   /* no cardman inserted */
 703                /* no */
 704                dev->rlen =
 705                    dev->rpos =
 706                    dev->atr_csum = dev->atr_len_retry = dev->cwarn = 0;
 707                dev->mstate = M_FETCH_ATR;
 708
 709                dev->flags &= 0x000000ff; /* only keep IO and MONITOR locks */
 710
 711                if (dev->flags0 == 0xff) {
 712                        DEBUGP(4, dev, "set IS_CMM_ABSENT bit\n");
 713                        set_bit(IS_CMM_ABSENT, &dev->flags);
 714                } else if (test_bit(IS_CMM_ABSENT, &dev->flags)) {
 715                        DEBUGP(4, dev, "clear IS_CMM_ABSENT bit "
 716                               "(card is removed)\n");
 717                        clear_bit(IS_CMM_ABSENT, &dev->flags);
 718                }
 719
 720                goto release_io;
 721        } else if ((dev->flags0 & 1) && test_bit(IS_CMM_ABSENT, &dev->flags)) {
 722                /* cardman and card present but cardman was absent before
 723                 * (after suspend with inserted card) */
 724                DEBUGP(4, dev, "clear IS_CMM_ABSENT bit (card is inserted)\n");
 725                clear_bit(IS_CMM_ABSENT, &dev->flags);
 726        }
 727
 728        if (test_bit(IS_ATR_VALID, &dev->flags) == 1) {
 729                DEBUGP(7, dev, "believe ATR is already valid (do nothing)\n");
 730                goto release_io;
 731        }
 732
 733        switch (dev->mstate) {
 734                unsigned char flags0;
 735        case M_CARDOFF:
 736                DEBUGP(4, dev, "M_CARDOFF\n");
 737                flags0 = inb(REG_FLAGS0(iobase));
 738                if (flags0 & 0x02) {
 739                        /* wait until Flags0 indicate power is off */
 740                        dev->mdelay = T_10MSEC;
 741                } else {
 742                        /* Flags0 indicate power off and no card inserted now;
 743                         * Reset CARDMAN CONTROLLER */
 744                        xoutb(0x80, REG_FLAGS0(iobase));
 745
 746                        /* prepare for fetching ATR again: after card off ATR
 747                         * is read again automatically */
 748                        dev->rlen =
 749                            dev->rpos =
 750                            dev->atr_csum =
 751                            dev->atr_len_retry = dev->cwarn = 0;
 752                        dev->mstate = M_FETCH_ATR;
 753
 754                        /* minimal gap between CARDOFF and read ATR is 50msec */
 755                        dev->mdelay = T_50MSEC;
 756                }
 757                break;
 758        case M_FETCH_ATR:
 759                DEBUGP(4, dev, "M_FETCH_ATR\n");
 760                xoutb(0x80, REG_FLAGS0(iobase));
 761                DEBUGP(4, dev, "Reset BAUDV to 9600\n");
 762                dev->baudv = 0x173;     /* 9600 */
 763                xoutb(0x02, REG_STOPBITS(iobase));      /* stopbits=2 */
 764                xoutb(0x73, REG_BAUDRATE(iobase));      /* baud value */
 765                xoutb(0x21, REG_FLAGS1(iobase));        /* T_Active=1, baud
 766                                                           value */
 767                /* warm start vs. power on: */
 768                xoutb(dev->flags0 & 2 ? 0x46 : 0x44, REG_FLAGS0(iobase));
 769                dev->mdelay = T_40MSEC;
 770                dev->mstate = M_TIMEOUT_WAIT;
 771                break;
 772        case M_TIMEOUT_WAIT:
 773                DEBUGP(4, dev, "M_TIMEOUT_WAIT\n");
 774                /* numRecBytes */
 775                io_read_num_rec_bytes(iobase, &dev->atr_len);
 776                dev->mdelay = T_10MSEC;
 777                dev->mstate = M_READ_ATR_LEN;
 778                break;
 779        case M_READ_ATR_LEN:
 780                DEBUGP(4, dev, "M_READ_ATR_LEN\n");
 781                /* infinite loop possible, since there is no timeout */
 782
 783#define MAX_ATR_LEN_RETRY       100
 784
 785                if (dev->atr_len == io_read_num_rec_bytes(iobase, &s)) {
 786                        if (dev->atr_len_retry++ >= MAX_ATR_LEN_RETRY) {                                        /* + XX msec */
 787                                dev->mdelay = T_10MSEC;
 788                                dev->mstate = M_READ_ATR;
 789                        }
 790                } else {
 791                        dev->atr_len = s;
 792                        dev->atr_len_retry = 0; /* set new timeout */
 793                }
 794
 795                DEBUGP(4, dev, "Current ATR_LEN = %i\n", dev->atr_len);
 796                break;
 797        case M_READ_ATR:
 798                DEBUGP(4, dev, "M_READ_ATR\n");
 799                xoutb(0x80, REG_FLAGS0(iobase));        /* reset SM */
 800                for (i = 0; i < dev->atr_len; i++) {
 801                        xoutb(i, REG_BUF_ADDR(iobase));
 802                        dev->atr[i] = inb(REG_BUF_DATA(iobase));
 803                }
 804                /* Deactivate T_Active flags */
 805                DEBUGP(4, dev, "Deactivate T_Active flags\n");
 806                dev->flags1 = 0x01;
 807                xoutb(dev->flags1, REG_FLAGS1(iobase));
 808
 809                /* atr is present (which doesn't mean it's valid) */
 810                set_bit(IS_ATR_PRESENT, &dev->flags);
 811                if (dev->atr[0] == 0x03)
 812                        str_invert_revert(dev->atr, dev->atr_len);
 813                atrc = parse_atr(dev);
 814                if (atrc == 0) {        /* atr invalid */
 815                        dev->mdelay = 0;
 816                        dev->mstate = M_BAD_CARD;
 817                } else {
 818                        dev->mdelay = T_50MSEC;
 819                        dev->mstate = M_ATR_PRESENT;
 820                        set_bit(IS_ATR_VALID, &dev->flags);
 821                }
 822
 823                if (test_bit(IS_ATR_VALID, &dev->flags) == 1) {
 824                        DEBUGP(4, dev, "monitor_card: ATR valid\n");
 825                        /* if ta1 == 0x11, no PPS necessary (default values) */
 826                        /* do not do PPS with multi protocol cards */
 827                        if ((test_bit(IS_AUTOPPS_ACT, &dev->flags) == 0) &&
 828                            (dev->ta1 != 0x11) &&
 829                            !(test_bit(IS_ANY_T0, &dev->flags) &&
 830                            test_bit(IS_ANY_T1, &dev->flags))) {
 831                                DEBUGP(4, dev, "Perform AUTOPPS\n");
 832                                set_bit(IS_AUTOPPS_ACT, &dev->flags);
 833                                ptsreq.protocol = (0x01 << dev->proto);
 834                                ptsreq.flags = 0x01;
 835                                ptsreq.pts1 = 0x00;
 836                                ptsreq.pts2 = 0x00;
 837                                ptsreq.pts3 = 0x00;
 838                                if (set_protocol(dev, &ptsreq) == 0) {
 839                                        DEBUGP(4, dev, "AUTOPPS ret SUCC\n");
 840                                        clear_bit(IS_AUTOPPS_ACT, &dev->flags);
 841                                        wake_up_interruptible(&dev->atrq);
 842                                } else {
 843                                        DEBUGP(4, dev, "AUTOPPS failed: "
 844                                               "repower using defaults\n");
 845                                        /* prepare for repowering  */
 846                                        clear_bit(IS_ATR_PRESENT, &dev->flags);
 847                                        clear_bit(IS_ATR_VALID, &dev->flags);
 848                                        dev->rlen =
 849                                            dev->rpos =
 850                                            dev->atr_csum =
 851                                            dev->atr_len_retry = dev->cwarn = 0;
 852                                        dev->mstate = M_FETCH_ATR;
 853
 854                                        dev->mdelay = T_50MSEC;
 855                                }
 856                        } else {
 857                                /* for cards which use slightly different
 858                                 * params (extra guard time) */
 859                                set_cardparameter(dev);
 860                                if (test_bit(IS_AUTOPPS_ACT, &dev->flags) == 1)
 861                                        DEBUGP(4, dev, "AUTOPPS already active "
 862                                               "2nd try:use default values\n");
 863                                if (dev->ta1 == 0x11)
 864                                        DEBUGP(4, dev, "No AUTOPPS necessary "
 865                                               "TA(1)==0x11\n");
 866                                if (test_bit(IS_ANY_T0, &dev->flags)
 867                                    && test_bit(IS_ANY_T1, &dev->flags))
 868                                        DEBUGP(4, dev, "Do NOT perform AUTOPPS "
 869                                               "with multiprotocol cards\n");
 870                                clear_bit(IS_AUTOPPS_ACT, &dev->flags);
 871                                wake_up_interruptible(&dev->atrq);
 872                        }
 873                } else {
 874                        DEBUGP(4, dev, "ATR invalid\n");
 875                        wake_up_interruptible(&dev->atrq);
 876                }
 877                break;
 878        case M_BAD_CARD:
 879                DEBUGP(4, dev, "M_BAD_CARD\n");
 880                /* slow down warning, but prompt immediately after insertion */
 881                if (dev->cwarn == 0 || dev->cwarn == 10) {
 882                        set_bit(IS_BAD_CARD, &dev->flags);
 883                        dev_warn(&dev->p_dev->dev, MODULE_NAME ": ");
 884                        if (test_bit(IS_BAD_CSUM, &dev->flags)) {
 885                                DEBUGP(4, dev, "ATR checksum (0x%.2x, should "
 886                                       "be zero) failed\n", dev->atr_csum);
 887                        }
 888#ifdef CM4000_DEBUG
 889                        else if (test_bit(IS_BAD_LENGTH, &dev->flags)) {
 890                                DEBUGP(4, dev, "ATR length error\n");
 891                        } else {
 892                                DEBUGP(4, dev, "card damaged or wrong way "
 893                                        "inserted\n");
 894                        }
 895#endif
 896                        dev->cwarn = 0;
 897                        wake_up_interruptible(&dev->atrq);      /* wake open */
 898                }
 899                dev->cwarn++;
 900                dev->mdelay = T_100MSEC;
 901                dev->mstate = M_FETCH_ATR;
 902                break;
 903        default:
 904                DEBUGP(7, dev, "Unknown action\n");
 905                break;          /* nothing */
 906        }
 907
 908release_io:
 909        DEBUGP(7, dev, "release_io\n");
 910        clear_bit(LOCK_IO, &dev->flags);
 911        wake_up_interruptible(&dev->ioq);       /* whoever needs IO */
 912
 913return_with_timer:
 914        DEBUGP(7, dev, "<- monitor_card (returns with timer)\n");
 915        mod_timer(&dev->timer, jiffies + dev->mdelay);
 916        clear_bit(LOCK_MONITOR, &dev->flags);
 917}
 918
 919/* Interface to userland (file_operations) */
 920
 921static ssize_t cmm_read(struct file *filp, __user char *buf, size_t count,
 922                        loff_t *ppos)
 923{
 924        struct cm4000_dev *dev = filp->private_data;
 925        unsigned int iobase = dev->p_dev->resource[0]->start;
 926        ssize_t rc;
 927        int i, j, k;
 928
 929        DEBUGP(2, dev, "-> cmm_read(%s,%d)\n", current->comm, current->pid);
 930
 931        if (count == 0)         /* according to manpage */
 932                return 0;
 933
 934        if (!pcmcia_dev_present(dev->p_dev) || /* device removed */
 935            test_bit(IS_CMM_ABSENT, &dev->flags))
 936                return -ENODEV;
 937
 938        if (test_bit(IS_BAD_CSUM, &dev->flags))
 939                return -EIO;
 940
 941        /* also see the note about this in cmm_write */
 942        if (wait_event_interruptible
 943            (dev->atrq,
 944             ((filp->f_flags & O_NONBLOCK)
 945              || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags) != 0)))) {
 946                if (filp->f_flags & O_NONBLOCK)
 947                        return -EAGAIN;
 948                return -ERESTARTSYS;
 949        }
 950
 951        if (test_bit(IS_ATR_VALID, &dev->flags) == 0)
 952                return -EIO;
 953
 954        /* this one implements blocking IO */
 955        if (wait_event_interruptible
 956            (dev->readq,
 957             ((filp->f_flags & O_NONBLOCK) || (dev->rpos < dev->rlen)))) {
 958                if (filp->f_flags & O_NONBLOCK)
 959                        return -EAGAIN;
 960                return -ERESTARTSYS;
 961        }
 962
 963        /* lock io */
 964        if (wait_event_interruptible
 965            (dev->ioq,
 966             ((filp->f_flags & O_NONBLOCK)
 967              || (test_and_set_bit(LOCK_IO, (void *)&dev->flags) == 0)))) {
 968                if (filp->f_flags & O_NONBLOCK)
 969                        return -EAGAIN;
 970                return -ERESTARTSYS;
 971        }
 972
 973        rc = 0;
 974        dev->flags0 = inb(REG_FLAGS0(iobase));
 975        if ((dev->flags0 & 1) == 0      /* no smartcard inserted */
 976            || dev->flags0 == 0xff) {   /* no cardman inserted */
 977                clear_bit(IS_ATR_VALID, &dev->flags);
 978                if (dev->flags0 & 1) {
 979                        set_bit(IS_CMM_ABSENT, &dev->flags);
 980                        rc = -ENODEV;
 981                } else {
 982                        rc = -EIO;
 983                }
 984                goto release_io;
 985        }
 986
 987        DEBUGP(4, dev, "begin read answer\n");
 988        j = min(count, (size_t)(dev->rlen - dev->rpos));
 989        k = dev->rpos;
 990        if (k + j > 255)
 991                j = 256 - k;
 992        DEBUGP(4, dev, "read1 j=%d\n", j);
 993        for (i = 0; i < j; i++) {
 994                xoutb(k++, REG_BUF_ADDR(iobase));
 995                dev->rbuf[i] = xinb(REG_BUF_DATA(iobase));
 996        }
 997        j = min(count, (size_t)(dev->rlen - dev->rpos));
 998        if (k + j > 255) {
 999                DEBUGP(4, dev, "read2 j=%d\n", j);
1000                dev->flags1 |= 0x10;    /* MSB buf addr set */
1001                xoutb(dev->flags1, REG_FLAGS1(iobase));
1002                for (; i < j; i++) {
1003                        xoutb(k++, REG_BUF_ADDR(iobase));
1004                        dev->rbuf[i] = xinb(REG_BUF_DATA(iobase));
1005                }
1006        }
1007
1008        if (dev->proto == 0 && count > dev->rlen - dev->rpos && i) {
1009                DEBUGP(4, dev, "T=0 and count > buffer\n");
1010                dev->rbuf[i] = dev->rbuf[i - 1];
1011                dev->rbuf[i - 1] = dev->procbyte;
1012                j++;
1013        }
1014        count = j;
1015
1016        dev->rpos = dev->rlen + 1;
1017
1018        /* Clear T1Active */
1019        DEBUGP(4, dev, "Clear T1Active\n");
1020        dev->flags1 &= 0xdf;
1021        xoutb(dev->flags1, REG_FLAGS1(iobase));
1022
1023        xoutb(0, REG_FLAGS1(iobase));   /* clear detectCMM */
1024        /* last check before exit */
1025        if (!io_detect_cm4000(iobase, dev)) {
1026                rc = -ENODEV;
1027                goto release_io;
1028        }
1029
1030        if (test_bit(IS_INVREV, &dev->flags) && count > 0)
1031                str_invert_revert(dev->rbuf, count);
1032
1033        if (copy_to_user(buf, dev->rbuf, count))
1034                rc = -EFAULT;
1035
1036release_io:
1037        clear_bit(LOCK_IO, &dev->flags);
1038        wake_up_interruptible(&dev->ioq);
1039
1040        DEBUGP(2, dev, "<- cmm_read returns: rc = %zi\n",
1041               (rc < 0 ? rc : count));
1042        return rc < 0 ? rc : count;
1043}
1044
1045static ssize_t cmm_write(struct file *filp, const char __user *buf,
1046                         size_t count, loff_t *ppos)
1047{
1048        struct cm4000_dev *dev = filp->private_data;
1049        unsigned int iobase = dev->p_dev->resource[0]->start;
1050        unsigned short s;
1051        unsigned char tmp;
1052        unsigned char infolen;
1053        unsigned char sendT0;
1054        unsigned short nsend;
1055        unsigned short nr;
1056        ssize_t rc;
1057        int i;
1058
1059        DEBUGP(2, dev, "-> cmm_write(%s,%d)\n", current->comm, current->pid);
1060
1061        if (count == 0)         /* according to manpage */
1062                return 0;
1063
1064        if (dev->proto == 0 && count < 4) {
1065                /* T0 must have at least 4 bytes */
1066                DEBUGP(4, dev, "T0 short write\n");
1067                return -EIO;
1068        }
1069
1070        nr = count & 0x1ff;     /* max bytes to write */
1071
1072        sendT0 = dev->proto ? 0 : nr > 5 ? 0x08 : 0;
1073
1074        if (!pcmcia_dev_present(dev->p_dev) || /* device removed */
1075            test_bit(IS_CMM_ABSENT, &dev->flags))
1076                return -ENODEV;
1077
1078        if (test_bit(IS_BAD_CSUM, &dev->flags)) {
1079                DEBUGP(4, dev, "bad csum\n");
1080                return -EIO;
1081        }
1082
1083        /*
1084         * wait for atr to become valid.
1085         * note: it is important to lock this code. if we dont, the monitor
1086         * could be run between test_bit and the call to sleep on the
1087         * atr-queue.  if *then* the monitor detects atr valid, it will wake up
1088         * any process on the atr-queue, *but* since we have been interrupted,
1089         * we do not yet sleep on this queue. this would result in a missed
1090         * wake_up and the calling process would sleep forever (until
1091         * interrupted).  also, do *not* restore_flags before sleep_on, because
1092         * this could result in the same situation!
1093         */
1094        if (wait_event_interruptible
1095            (dev->atrq,
1096             ((filp->f_flags & O_NONBLOCK)
1097              || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags) != 0)))) {
1098                if (filp->f_flags & O_NONBLOCK)
1099                        return -EAGAIN;
1100                return -ERESTARTSYS;
1101        }
1102
1103        if (test_bit(IS_ATR_VALID, &dev->flags) == 0) { /* invalid atr */
1104                DEBUGP(4, dev, "invalid ATR\n");
1105                return -EIO;
1106        }
1107
1108        /* lock io */
1109        if (wait_event_interruptible
1110            (dev->ioq,
1111             ((filp->f_flags & O_NONBLOCK)
1112              || (test_and_set_bit(LOCK_IO, (void *)&dev->flags) == 0)))) {
1113                if (filp->f_flags & O_NONBLOCK)
1114                        return -EAGAIN;
1115                return -ERESTARTSYS;
1116        }
1117
1118        if (copy_from_user(dev->sbuf, buf, ((count > 512) ? 512 : count)))
1119                return -EFAULT;
1120
1121        rc = 0;
1122        dev->flags0 = inb(REG_FLAGS0(iobase));
1123        if ((dev->flags0 & 1) == 0      /* no smartcard inserted */
1124            || dev->flags0 == 0xff) {   /* no cardman inserted */
1125                clear_bit(IS_ATR_VALID, &dev->flags);
1126                if (dev->flags0 & 1) {
1127                        set_bit(IS_CMM_ABSENT, &dev->flags);
1128                        rc = -ENODEV;
1129                } else {
1130                        DEBUGP(4, dev, "IO error\n");
1131                        rc = -EIO;
1132                }
1133                goto release_io;
1134        }
1135
1136        xoutb(0x80, REG_FLAGS0(iobase));        /* reset SM  */
1137
1138        if (!io_detect_cm4000(iobase, dev)) {
1139                rc = -ENODEV;
1140                goto release_io;
1141        }
1142
1143        /* reflect T=0 send/read mode in flags1 */
1144        dev->flags1 |= (sendT0);
1145
1146        set_cardparameter(dev);
1147
1148        /* dummy read, reset flag procedure received */
1149        tmp = inb(REG_FLAGS1(iobase));
1150
1151        dev->flags1 = 0x20      /* T_Active */
1152            | (sendT0)
1153            | (test_bit(IS_INVREV, &dev->flags) ? 2 : 0)/* inverse parity  */
1154            | (((dev->baudv - 1) & 0x0100) >> 8);       /* MSB-Baud */
1155        DEBUGP(1, dev, "set dev->flags1 = 0x%.2x\n", dev->flags1);
1156        xoutb(dev->flags1, REG_FLAGS1(iobase));
1157
1158        /* xmit data */
1159        DEBUGP(4, dev, "Xmit data\n");
1160        for (i = 0; i < nr; i++) {
1161                if (i >= 256) {
1162                        dev->flags1 = 0x20      /* T_Active */
1163                            | (sendT0)  /* SendT0 */
1164                                /* inverse parity: */
1165                            | (test_bit(IS_INVREV, &dev->flags) ? 2 : 0)
1166                            | (((dev->baudv - 1) & 0x0100) >> 8) /* MSB-Baud */
1167                            | 0x10;     /* set address high */
1168                        DEBUGP(4, dev, "dev->flags = 0x%.2x - set address "
1169                               "high\n", dev->flags1);
1170                        xoutb(dev->flags1, REG_FLAGS1(iobase));
1171                }
1172                if (test_bit(IS_INVREV, &dev->flags)) {
1173                        DEBUGP(4, dev, "Apply inverse convention for 0x%.2x "
1174                                "-> 0x%.2x\n", (unsigned char)dev->sbuf[i],
1175                              invert_revert(dev->sbuf[i]));
1176                        xoutb(i, REG_BUF_ADDR(iobase));
1177                        xoutb(invert_revert(dev->sbuf[i]),
1178                              REG_BUF_DATA(iobase));
1179                } else {
1180                        xoutb(i, REG_BUF_ADDR(iobase));
1181                        xoutb(dev->sbuf[i], REG_BUF_DATA(iobase));
1182                }
1183        }
1184        DEBUGP(4, dev, "Xmit done\n");
1185
1186        if (dev->proto == 0) {
1187                /* T=0 proto: 0 byte reply  */
1188                if (nr == 4) {
1189                        DEBUGP(4, dev, "T=0 assumes 0 byte reply\n");
1190                        xoutb(i, REG_BUF_ADDR(iobase));
1191                        if (test_bit(IS_INVREV, &dev->flags))
1192                                xoutb(0xff, REG_BUF_DATA(iobase));
1193                        else
1194                                xoutb(0x00, REG_BUF_DATA(iobase));
1195                }
1196
1197                /* numSendBytes */
1198                if (sendT0)
1199                        nsend = nr;
1200                else {
1201                        if (nr == 4)
1202                                nsend = 5;
1203                        else {
1204                                nsend = 5 + (unsigned char)dev->sbuf[4];
1205                                if (dev->sbuf[4] == 0)
1206                                        nsend += 0x100;
1207                        }
1208                }
1209        } else
1210                nsend = nr;
1211
1212        /* T0: output procedure byte */
1213        if (test_bit(IS_INVREV, &dev->flags)) {
1214                DEBUGP(4, dev, "T=0 set Procedure byte (inverse-reverse) "
1215                       "0x%.2x\n", invert_revert(dev->sbuf[1]));
1216                xoutb(invert_revert(dev->sbuf[1]), REG_NUM_BYTES(iobase));
1217        } else {
1218                DEBUGP(4, dev, "T=0 set Procedure byte 0x%.2x\n", dev->sbuf[1]);
1219                xoutb(dev->sbuf[1], REG_NUM_BYTES(iobase));
1220        }
1221
1222        DEBUGP(1, dev, "set NumSendBytes = 0x%.2x\n",
1223               (unsigned char)(nsend & 0xff));
1224        xoutb((unsigned char)(nsend & 0xff), REG_NUM_SEND(iobase));
1225
1226        DEBUGP(1, dev, "Trigger CARDMAN CONTROLLER (0x%.2x)\n",
1227               0x40     /* SM_Active */
1228              | (dev->flags0 & 2 ? 0 : 4)       /* power on if needed */
1229              |(dev->proto ? 0x10 : 0x08)       /* T=1/T=0 */
1230              |(nsend & 0x100) >> 8 /* MSB numSendBytes */ );
1231        xoutb(0x40              /* SM_Active */
1232              | (dev->flags0 & 2 ? 0 : 4)       /* power on if needed */
1233              |(dev->proto ? 0x10 : 0x08)       /* T=1/T=0 */
1234              |(nsend & 0x100) >> 8,    /* MSB numSendBytes */
1235              REG_FLAGS0(iobase));
1236
1237        /* wait for xmit done */
1238        if (dev->proto == 1) {
1239                DEBUGP(4, dev, "Wait for xmit done\n");
1240                for (i = 0; i < 1000; i++) {
1241                        if (inb(REG_FLAGS0(iobase)) & 0x08)
1242                                break;
1243                        msleep_interruptible(10);
1244                }
1245                if (i == 1000) {
1246                        DEBUGP(4, dev, "timeout waiting for xmit done\n");
1247                        rc = -EIO;
1248                        goto release_io;
1249                }
1250        }
1251
1252        /* T=1: wait for infoLen */
1253
1254        infolen = 0;
1255        if (dev->proto) {
1256                /* wait until infoLen is valid */
1257                for (i = 0; i < 6000; i++) {    /* max waiting time of 1 min */
1258                        io_read_num_rec_bytes(iobase, &s);
1259                        if (s >= 3) {
1260                                infolen = inb(REG_FLAGS1(iobase));
1261                                DEBUGP(4, dev, "infolen=%d\n", infolen);
1262                                break;
1263                        }
1264                        msleep_interruptible(10);
1265                }
1266                if (i == 6000) {
1267                        DEBUGP(4, dev, "timeout waiting for infoLen\n");
1268                        rc = -EIO;
1269                        goto release_io;
1270                }
1271        } else
1272                clear_bit(IS_PROCBYTE_PRESENT, &dev->flags);
1273
1274        /* numRecBytes | bit9 of numRecytes */
1275        io_read_num_rec_bytes(iobase, &dev->rlen);
1276        for (i = 0; i < 600; i++) {     /* max waiting time of 2 sec */
1277                if (dev->proto) {
1278                        if (dev->rlen >= infolen + 4)
1279                                break;
1280                }
1281                msleep_interruptible(10);
1282                /* numRecBytes | bit9 of numRecytes */
1283                io_read_num_rec_bytes(iobase, &s);
1284                if (s > dev->rlen) {
1285                        DEBUGP(1, dev, "NumRecBytes inc (reset timeout)\n");
1286                        i = 0;  /* reset timeout */
1287                        dev->rlen = s;
1288                }
1289                /* T=0: we are done when numRecBytes doesn't
1290                 *      increment any more and NoProcedureByte
1291                 *      is set and numRecBytes == bytes sent + 6
1292                 *      (header bytes + data + 1 for sw2)
1293                 *      except when the card replies an error
1294                 *      which means, no data will be sent back.
1295                 */
1296                else if (dev->proto == 0) {
1297                        if ((inb(REG_BUF_ADDR(iobase)) & 0x80)) {
1298                                /* no procedure byte received since last read */
1299                                DEBUGP(1, dev, "NoProcedure byte set\n");
1300                                /* i=0; */
1301                        } else {
1302                                /* procedure byte received since last read */
1303                                DEBUGP(1, dev, "NoProcedure byte unset "
1304                                        "(reset timeout)\n");
1305                                dev->procbyte = inb(REG_FLAGS1(iobase));
1306                                DEBUGP(1, dev, "Read procedure byte 0x%.2x\n",
1307                                      dev->procbyte);
1308                                i = 0;  /* resettimeout */
1309                        }
1310                        if (inb(REG_FLAGS0(iobase)) & 0x08) {
1311                                DEBUGP(1, dev, "T0Done flag (read reply)\n");
1312                                break;
1313                        }
1314                }
1315                if (dev->proto)
1316                        infolen = inb(REG_FLAGS1(iobase));
1317        }
1318        if (i == 600) {
1319                DEBUGP(1, dev, "timeout waiting for numRecBytes\n");
1320                rc = -EIO;
1321                goto release_io;
1322        } else {
1323                if (dev->proto == 0) {
1324                        DEBUGP(1, dev, "Wait for T0Done bit to be  set\n");
1325                        for (i = 0; i < 1000; i++) {
1326                                if (inb(REG_FLAGS0(iobase)) & 0x08)
1327                                        break;
1328                                msleep_interruptible(10);
1329                        }
1330                        if (i == 1000) {
1331                                DEBUGP(1, dev, "timeout waiting for T0Done\n");
1332                                rc = -EIO;
1333                                goto release_io;
1334                        }
1335
1336                        dev->procbyte = inb(REG_FLAGS1(iobase));
1337                        DEBUGP(4, dev, "Read procedure byte 0x%.2x\n",
1338                              dev->procbyte);
1339
1340                        io_read_num_rec_bytes(iobase, &dev->rlen);
1341                        DEBUGP(4, dev, "Read NumRecBytes = %i\n", dev->rlen);
1342
1343                }
1344        }
1345        /* T=1: read offset=zero, T=0: read offset=after challenge */
1346        dev->rpos = dev->proto ? 0 : nr == 4 ? 5 : nr > dev->rlen ? 5 : nr;
1347        DEBUGP(4, dev, "dev->rlen = %i,  dev->rpos = %i, nr = %i\n",
1348              dev->rlen, dev->rpos, nr);
1349
1350release_io:
1351        DEBUGP(4, dev, "Reset SM\n");
1352        xoutb(0x80, REG_FLAGS0(iobase));        /* reset SM */
1353
1354        if (rc < 0) {
1355                DEBUGP(4, dev, "Write failed but clear T_Active\n");
1356                dev->flags1 &= 0xdf;
1357                xoutb(dev->flags1, REG_FLAGS1(iobase));
1358        }
1359
1360        clear_bit(LOCK_IO, &dev->flags);
1361        wake_up_interruptible(&dev->ioq);
1362        wake_up_interruptible(&dev->readq);     /* tell read we have data */
1363
1364        /* ITSEC E2: clear write buffer */
1365        memset((char *)dev->sbuf, 0, 512);
1366
1367        /* return error or actually written bytes */
1368        DEBUGP(2, dev, "<- cmm_write\n");
1369        return rc < 0 ? rc : nr;
1370}
1371
1372static void start_monitor(struct cm4000_dev *dev)
1373{
1374        DEBUGP(3, dev, "-> start_monitor\n");
1375        if (!dev->monitor_running) {
1376                DEBUGP(5, dev, "create, init and add timer\n");
1377                setup_timer(&dev->timer, monitor_card, (unsigned long)dev);
1378                dev->monitor_running = 1;
1379                mod_timer(&dev->timer, jiffies);
1380        } else
1381                DEBUGP(5, dev, "monitor already running\n");
1382        DEBUGP(3, dev, "<- start_monitor\n");
1383}
1384
1385static void stop_monitor(struct cm4000_dev *dev)
1386{
1387        DEBUGP(3, dev, "-> stop_monitor\n");
1388        if (dev->monitor_running) {
1389                DEBUGP(5, dev, "stopping monitor\n");
1390                terminate_monitor(dev);
1391                /* reset monitor SM */
1392                clear_bit(IS_ATR_VALID, &dev->flags);
1393                clear_bit(IS_ATR_PRESENT, &dev->flags);
1394        } else
1395                DEBUGP(5, dev, "monitor already stopped\n");
1396        DEBUGP(3, dev, "<- stop_monitor\n");
1397}
1398
1399static long cmm_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
1400{
1401        struct cm4000_dev *dev = filp->private_data;
1402        unsigned int iobase = dev->p_dev->resource[0]->start;
1403        struct inode *inode = file_inode(filp);
1404        struct pcmcia_device *link;
1405        int size;
1406        int rc;
1407        void __user *argp = (void __user *)arg;
1408#ifdef CM4000_DEBUG
1409        char *ioctl_names[CM_IOC_MAXNR + 1] = {
1410                [_IOC_NR(CM_IOCGSTATUS)] "CM_IOCGSTATUS",
1411                [_IOC_NR(CM_IOCGATR)] "CM_IOCGATR",
1412                [_IOC_NR(CM_IOCARDOFF)] "CM_IOCARDOFF",
1413                [_IOC_NR(CM_IOCSPTS)] "CM_IOCSPTS",
1414                [_IOC_NR(CM_IOSDBGLVL)] "CM4000_DBGLVL",
1415        };
1416        DEBUGP(3, dev, "cmm_ioctl(device=%d.%d) %s\n", imajor(inode),
1417               iminor(inode), ioctl_names[_IOC_NR(cmd)]);
1418#endif
1419
1420        mutex_lock(&cmm_mutex);
1421        rc = -ENODEV;
1422        link = dev_table[iminor(inode)];
1423        if (!pcmcia_dev_present(link)) {
1424                DEBUGP(4, dev, "DEV_OK false\n");
1425                goto out;
1426        }
1427
1428        if (test_bit(IS_CMM_ABSENT, &dev->flags)) {
1429                DEBUGP(4, dev, "CMM_ABSENT flag set\n");
1430                goto out;
1431        }
1432        rc = -EINVAL;
1433
1434        if (_IOC_TYPE(cmd) != CM_IOC_MAGIC) {
1435                DEBUGP(4, dev, "ioctype mismatch\n");
1436                goto out;
1437        }
1438        if (_IOC_NR(cmd) > CM_IOC_MAXNR) {
1439                DEBUGP(4, dev, "iocnr mismatch\n");
1440                goto out;
1441        }
1442        size = _IOC_SIZE(cmd);
1443        rc = -EFAULT;
1444        DEBUGP(4, dev, "iocdir=%.4x iocr=%.4x iocw=%.4x iocsize=%d cmd=%.4x\n",
1445              _IOC_DIR(cmd), _IOC_READ, _IOC_WRITE, size, cmd);
1446
1447        if (_IOC_DIR(cmd) & _IOC_READ) {
1448                if (!access_ok(VERIFY_WRITE, argp, size))
1449                        goto out;
1450        }
1451        if (_IOC_DIR(cmd) & _IOC_WRITE) {
1452                if (!access_ok(VERIFY_READ, argp, size))
1453                        goto out;
1454        }
1455        rc = 0;
1456
1457        switch (cmd) {
1458        case CM_IOCGSTATUS:
1459                DEBUGP(4, dev, " ... in CM_IOCGSTATUS\n");
1460                {
1461                        int status;
1462
1463                        /* clear other bits, but leave inserted & powered as
1464                         * they are */
1465                        status = dev->flags0 & 3;
1466                        if (test_bit(IS_ATR_PRESENT, &dev->flags))
1467                                status |= CM_ATR_PRESENT;
1468                        if (test_bit(IS_ATR_VALID, &dev->flags))
1469                                status |= CM_ATR_VALID;
1470                        if (test_bit(IS_CMM_ABSENT, &dev->flags))
1471                                status |= CM_NO_READER;
1472                        if (test_bit(IS_BAD_CARD, &dev->flags))
1473                                status |= CM_BAD_CARD;
1474                        if (copy_to_user(argp, &status, sizeof(int)))
1475                                rc = -EFAULT;
1476                }
1477                break;
1478        case CM_IOCGATR:
1479                DEBUGP(4, dev, "... in CM_IOCGATR\n");
1480                {
1481                        struct atreq __user *atreq = argp;
1482                        int tmp;
1483                        /* allow nonblocking io and being interrupted */
1484                        if (wait_event_interruptible
1485                            (dev->atrq,
1486                             ((filp->f_flags & O_NONBLOCK)
1487                              || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags)
1488                                  != 0)))) {
1489                                if (filp->f_flags & O_NONBLOCK)
1490                                        rc = -EAGAIN;
1491                                else
1492                                        rc = -ERESTARTSYS;
1493                                break;
1494                        }
1495
1496                        rc = -EFAULT;
1497                        if (test_bit(IS_ATR_VALID, &dev->flags) == 0) {
1498                                tmp = -1;
1499                                if (copy_to_user(&(atreq->atr_len), &tmp,
1500                                                 sizeof(int)))
1501                                        break;
1502                        } else {
1503                                if (copy_to_user(atreq->atr, dev->atr,
1504                                                 dev->atr_len))
1505                                        break;
1506
1507                                tmp = dev->atr_len;
1508                                if (copy_to_user(&(atreq->atr_len), &tmp, sizeof(int)))
1509                                        break;
1510                        }
1511                        rc = 0;
1512                        break;
1513                }
1514        case CM_IOCARDOFF:
1515
1516#ifdef CM4000_DEBUG
1517                DEBUGP(4, dev, "... in CM_IOCARDOFF\n");
1518                if (dev->flags0 & 0x01) {
1519                        DEBUGP(4, dev, "    Card inserted\n");
1520                } else {
1521                        DEBUGP(2, dev, "    No card inserted\n");
1522                }
1523                if (dev->flags0 & 0x02) {
1524                        DEBUGP(4, dev, "    Card powered\n");
1525                } else {
1526                        DEBUGP(2, dev, "    Card not powered\n");
1527                }
1528#endif
1529
1530                /* is a card inserted and powered? */
1531                if ((dev->flags0 & 0x01) && (dev->flags0 & 0x02)) {
1532
1533                        /* get IO lock */
1534                        if (wait_event_interruptible
1535                            (dev->ioq,
1536                             ((filp->f_flags & O_NONBLOCK)
1537                              || (test_and_set_bit(LOCK_IO, (void *)&dev->flags)
1538                                  == 0)))) {
1539                                if (filp->f_flags & O_NONBLOCK)
1540                                        rc = -EAGAIN;
1541                                else
1542                                        rc = -ERESTARTSYS;
1543                                break;
1544                        }
1545                        /* Set Flags0 = 0x42 */
1546                        DEBUGP(4, dev, "Set Flags0=0x42 \n");
1547                        xoutb(0x42, REG_FLAGS0(iobase));
1548                        clear_bit(IS_ATR_PRESENT, &dev->flags);
1549                        clear_bit(IS_ATR_VALID, &dev->flags);
1550                        dev->mstate = M_CARDOFF;
1551                        clear_bit(LOCK_IO, &dev->flags);
1552                        if (wait_event_interruptible
1553                            (dev->atrq,
1554                             ((filp->f_flags & O_NONBLOCK)
1555                              || (test_bit(IS_ATR_VALID, (void *)&dev->flags) !=
1556                                  0)))) {
1557                                if (filp->f_flags & O_NONBLOCK)
1558                                        rc = -EAGAIN;
1559                                else
1560                                        rc = -ERESTARTSYS;
1561                                break;
1562                        }
1563                }
1564                /* release lock */
1565                clear_bit(LOCK_IO, &dev->flags);
1566                wake_up_interruptible(&dev->ioq);
1567
1568                rc = 0;
1569                break;
1570        case CM_IOCSPTS:
1571                {
1572                        struct ptsreq krnptsreq;
1573
1574                        if (copy_from_user(&krnptsreq, argp,
1575                                           sizeof(struct ptsreq))) {
1576                                rc = -EFAULT;
1577                                break;
1578                        }
1579
1580                        rc = 0;
1581                        DEBUGP(4, dev, "... in CM_IOCSPTS\n");
1582                        /* wait for ATR to get valid */
1583                        if (wait_event_interruptible
1584                            (dev->atrq,
1585                             ((filp->f_flags & O_NONBLOCK)
1586                              || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags)
1587                                  != 0)))) {
1588                                if (filp->f_flags & O_NONBLOCK)
1589                                        rc = -EAGAIN;
1590                                else
1591                                        rc = -ERESTARTSYS;
1592                                break;
1593                        }
1594                        /* get IO lock */
1595                        if (wait_event_interruptible
1596                            (dev->ioq,
1597                             ((filp->f_flags & O_NONBLOCK)
1598                              || (test_and_set_bit(LOCK_IO, (void *)&dev->flags)
1599                                  == 0)))) {
1600                                if (filp->f_flags & O_NONBLOCK)
1601                                        rc = -EAGAIN;
1602                                else
1603                                        rc = -ERESTARTSYS;
1604                                break;
1605                        }
1606
1607                        if ((rc = set_protocol(dev, &krnptsreq)) != 0) {
1608                                /* auto power_on again */
1609                                dev->mstate = M_FETCH_ATR;
1610                                clear_bit(IS_ATR_VALID, &dev->flags);
1611                        }
1612                        /* release lock */
1613                        clear_bit(LOCK_IO, &dev->flags);
1614                        wake_up_interruptible(&dev->ioq);
1615
1616                }
1617                break;
1618#ifdef CM4000_DEBUG
1619        case CM_IOSDBGLVL:
1620                rc = -ENOTTY;
1621                break;
1622#endif
1623        default:
1624                DEBUGP(4, dev, "... in default (unknown IOCTL code)\n");
1625                rc = -ENOTTY;
1626        }
1627out:
1628        mutex_unlock(&cmm_mutex);
1629        return rc;
1630}
1631
1632static int cmm_open(struct inode *inode, struct file *filp)
1633{
1634        struct cm4000_dev *dev;
1635        struct pcmcia_device *link;
1636        int minor = iminor(inode);
1637        int ret;
1638
1639        if (minor >= CM4000_MAX_DEV)
1640                return -ENODEV;
1641
1642        mutex_lock(&cmm_mutex);
1643        link = dev_table[minor];
1644        if (link == NULL || !pcmcia_dev_present(link)) {
1645                ret = -ENODEV;
1646                goto out;
1647        }
1648
1649        if (link->open) {
1650                ret = -EBUSY;
1651                goto out;
1652        }
1653
1654        dev = link->priv;
1655        filp->private_data = dev;
1656
1657        DEBUGP(2, dev, "-> cmm_open(device=%d.%d process=%s,%d)\n",
1658              imajor(inode), minor, current->comm, current->pid);
1659
1660        /* init device variables, they may be "polluted" after close
1661         * or, the device may never have been closed (i.e. open failed)
1662         */
1663
1664        ZERO_DEV(dev);
1665
1666        /* opening will always block since the
1667         * monitor will be started by open, which
1668         * means we have to wait for ATR becoming
1669         * valid = block until valid (or card
1670         * inserted)
1671         */
1672        if (filp->f_flags & O_NONBLOCK) {
1673                ret = -EAGAIN;
1674                goto out;
1675        }
1676
1677        dev->mdelay = T_50MSEC;
1678
1679        /* start monitoring the cardstatus */
1680        start_monitor(dev);
1681
1682        link->open = 1;         /* only one open per device */
1683
1684        DEBUGP(2, dev, "<- cmm_open\n");
1685        ret = nonseekable_open(inode, filp);
1686out:
1687        mutex_unlock(&cmm_mutex);
1688        return ret;
1689}
1690
1691static int cmm_close(struct inode *inode, struct file *filp)
1692{
1693        struct cm4000_dev *dev;
1694        struct pcmcia_device *link;
1695        int minor = iminor(inode);
1696
1697        if (minor >= CM4000_MAX_DEV)
1698                return -ENODEV;
1699
1700        link = dev_table[minor];
1701        if (link == NULL)
1702                return -ENODEV;
1703
1704        dev = link->priv;
1705
1706        DEBUGP(2, dev, "-> cmm_close(maj/min=%d.%d)\n",
1707               imajor(inode), minor);
1708
1709        stop_monitor(dev);
1710
1711        ZERO_DEV(dev);
1712
1713        link->open = 0;         /* only one open per device */
1714        wake_up(&dev->devq);    /* socket removed? */
1715
1716        DEBUGP(2, dev, "cmm_close\n");
1717        return 0;
1718}
1719
1720static void cmm_cm4000_release(struct pcmcia_device * link)
1721{
1722        struct cm4000_dev *dev = link->priv;
1723
1724        /* dont terminate the monitor, rather rely on
1725         * close doing that for us.
1726         */
1727        DEBUGP(3, dev, "-> cmm_cm4000_release\n");
1728        while (link->open) {
1729                printk(KERN_INFO MODULE_NAME ": delaying release until "
1730                       "process has terminated\n");
1731                /* note: don't interrupt us:
1732                 * close the applications which own
1733                 * the devices _first_ !
1734                 */
1735                wait_event(dev->devq, (link->open == 0));
1736        }
1737        /* dev->devq=NULL;      this cannot be zeroed earlier */
1738        DEBUGP(3, dev, "<- cmm_cm4000_release\n");
1739        return;
1740}
1741
1742/*==== Interface to PCMCIA Layer =======================================*/
1743
1744static int cm4000_config_check(struct pcmcia_device *p_dev, void *priv_data)
1745{
1746        return pcmcia_request_io(p_dev);
1747}
1748
1749static int cm4000_config(struct pcmcia_device * link, int devno)
1750{
1751        struct cm4000_dev *dev;
1752
1753        link->config_flags |= CONF_AUTO_SET_IO;
1754
1755        /* read the config-tuples */
1756        if (pcmcia_loop_config(link, cm4000_config_check, NULL))
1757                goto cs_release;
1758
1759        if (pcmcia_enable_device(link))
1760                goto cs_release;
1761
1762        dev = link->priv;
1763
1764        return 0;
1765
1766cs_release:
1767        cm4000_release(link);
1768        return -ENODEV;
1769}
1770
1771static int cm4000_suspend(struct pcmcia_device *link)
1772{
1773        struct cm4000_dev *dev;
1774
1775        dev = link->priv;
1776        stop_monitor(dev);
1777
1778        return 0;
1779}
1780
1781static int cm4000_resume(struct pcmcia_device *link)
1782{
1783        struct cm4000_dev *dev;
1784
1785        dev = link->priv;
1786        if (link->open)
1787                start_monitor(dev);
1788
1789        return 0;
1790}
1791
1792static void cm4000_release(struct pcmcia_device *link)
1793{
1794        cmm_cm4000_release(link);       /* delay release until device closed */
1795        pcmcia_disable_device(link);
1796}
1797
1798static int cm4000_probe(struct pcmcia_device *link)
1799{
1800        struct cm4000_dev *dev;
1801        int i, ret;
1802
1803        for (i = 0; i < CM4000_MAX_DEV; i++)
1804                if (dev_table[i] == NULL)
1805                        break;
1806
1807        if (i == CM4000_MAX_DEV) {
1808                printk(KERN_NOTICE MODULE_NAME ": all devices in use\n");
1809                return -ENODEV;
1810        }
1811
1812        /* create a new cm4000_cs device */
1813        dev = kzalloc(sizeof(struct cm4000_dev), GFP_KERNEL);
1814        if (dev == NULL)
1815                return -ENOMEM;
1816
1817        dev->p_dev = link;
1818        link->priv = dev;
1819        dev_table[i] = link;
1820
1821        init_waitqueue_head(&dev->devq);
1822        init_waitqueue_head(&dev->ioq);
1823        init_waitqueue_head(&dev->atrq);
1824        init_waitqueue_head(&dev->readq);
1825
1826        ret = cm4000_config(link, i);
1827        if (ret) {
1828                dev_table[i] = NULL;
1829                kfree(dev);
1830                return ret;
1831        }
1832
1833        device_create(cmm_class, NULL, MKDEV(major, i), NULL, "cmm%d", i);
1834
1835        return 0;
1836}
1837
1838static void cm4000_detach(struct pcmcia_device *link)
1839{
1840        struct cm4000_dev *dev = link->priv;
1841        int devno;
1842
1843        /* find device */
1844        for (devno = 0; devno < CM4000_MAX_DEV; devno++)
1845                if (dev_table[devno] == link)
1846                        break;
1847        if (devno == CM4000_MAX_DEV)
1848                return;
1849
1850        stop_monitor(dev);
1851
1852        cm4000_release(link);
1853
1854        dev_table[devno] = NULL;
1855        kfree(dev);
1856
1857        device_destroy(cmm_class, MKDEV(major, devno));
1858
1859        return;
1860}
1861
1862static const struct file_operations cm4000_fops = {
1863        .owner  = THIS_MODULE,
1864        .read   = cmm_read,
1865        .write  = cmm_write,
1866        .unlocked_ioctl = cmm_ioctl,
1867        .open   = cmm_open,
1868        .release= cmm_close,
1869        .llseek = no_llseek,
1870};
1871
1872static const struct pcmcia_device_id cm4000_ids[] = {
1873        PCMCIA_DEVICE_MANF_CARD(0x0223, 0x0002),
1874        PCMCIA_DEVICE_PROD_ID12("CardMan", "4000", 0x2FB368CA, 0xA2BD8C39),
1875        PCMCIA_DEVICE_NULL,
1876};
1877MODULE_DEVICE_TABLE(pcmcia, cm4000_ids);
1878
1879static struct pcmcia_driver cm4000_driver = {
1880        .owner    = THIS_MODULE,
1881        .name     = "cm4000_cs",
1882        .probe    = cm4000_probe,
1883        .remove   = cm4000_detach,
1884        .suspend  = cm4000_suspend,
1885        .resume   = cm4000_resume,
1886        .id_table = cm4000_ids,
1887};
1888
1889static int __init cmm_init(void)
1890{
1891        int rc;
1892
1893        cmm_class = class_create(THIS_MODULE, "cardman_4000");
1894        if (IS_ERR(cmm_class))
1895                return PTR_ERR(cmm_class);
1896
1897        major = register_chrdev(0, DEVICE_NAME, &cm4000_fops);
1898        if (major < 0) {
1899                printk(KERN_WARNING MODULE_NAME
1900                        ": could not get major number\n");
1901                class_destroy(cmm_class);
1902                return major;
1903        }
1904
1905        rc = pcmcia_register_driver(&cm4000_driver);
1906        if (rc < 0) {
1907                unregister_chrdev(major, DEVICE_NAME);
1908                class_destroy(cmm_class);
1909                return rc;
1910        }
1911
1912        return 0;
1913}
1914
1915static void __exit cmm_exit(void)
1916{
1917        pcmcia_unregister_driver(&cm4000_driver);
1918        unregister_chrdev(major, DEVICE_NAME);
1919        class_destroy(cmm_class);
1920};
1921
1922module_init(cmm_init);
1923module_exit(cmm_exit);
1924MODULE_LICENSE("Dual BSD/GPL");
1925