drivers/char/pcmcia/cm4040_cs.c

   1 /*
   2  * A driver for the Omnikey PCMCIA smartcard reader CardMan 4040
   3  *
   4  * (c) 2000-2004 Omnikey AG (http://www.omnikey.com/)
   5  *
   6  * (C) 2005 Harald Welte <laforge@gnumonks.org>
   7  *      - add support for poll()
   8  *      - driver cleanup
   9  *      - add waitqueues
  10  *      - adhere to linux kernel coding style and policies
  11  *      - support 2.6.13 "new style" pcmcia interface
  12  *
  13  * The device basically is a USB CCID compliant device that has been
  14  * attached to an I/O-Mapped FIFO.
  15  *
  16  * All rights reserved, Dual BSD/GPL Licensed.
  17  */
  18
  19 /* #define PCMCIA_DEBUG 6 */
  20
  21 #include <linux/kernel.h>
  22 #include <linux/module.h>
  23 #include <linux/slab.h>
  24 #include <linux/init.h>
  25 #include <linux/fs.h>
  26 #include <linux/delay.h>
  27 #include <linux/poll.h>
  28 #include <linux/wait.h>
  29 #include <asm/uaccess.h>
  30 #include <asm/io.h>
  31
  32 #include <pcmcia/cs_types.h>
  33 #include <pcmcia/cs.h>
  34 #include <pcmcia/cistpl.h>
  35 #include <pcmcia/cisreg.h>
  36 #include <pcmcia/ciscode.h>
  37 #include <pcmcia/ds.h>
  38
  39 #include "cm4040_cs.h"
  40
  41
  42 #ifdef PCMCIA_DEBUG
  43 #define reader_to_dev(x)        (&handle_to_dev(x->link.handle))
  44 static int pc_debug = PCMCIA_DEBUG;
  45 module_param(pc_debug, int, 0600);
  46 #define DEBUGP(n, rdr, x, args...) do {                                 \
  47         if (pc_debug >= (n))                                            \
  48                 dev_printk(KERN_DEBUG, reader_to_dev(rdr), "%s:" x,     \
  49                            __FUNCTION__ , ##args);                      \
  50         } while (0)
  51 #else
  52 #define DEBUGP(n, rdr, x, args...)
  53 #endif
  54
  55 static char *version =
  56 "OMNIKEY CardMan 4040 v1.1.0gm4 - All bugs added by Harald Welte";
  57
  58 #define CCID_DRIVER_BULK_DEFAULT_TIMEOUT        (150*HZ)
  59 #define CCID_DRIVER_ASYNC_POWERUP_TIMEOUT       (35*HZ)
  60 #define CCID_DRIVER_MINIMUM_TIMEOUT             (3*HZ)
  61 #define READ_WRITE_BUFFER_SIZE 512
  62 #define POLL_LOOP_COUNT                         1000
  63
  64 /* how often to poll for fifo status change */
  65 #define POLL_PERIOD                             msecs_to_jiffies(10)
  66
  67 static void reader_release(dev_link_t *link);
  68
  69 static int major;
  70
  71 #define         BS_READABLE     0x01
  72 #define         BS_WRITABLE     0x02
  73
  74 struct reader_dev {
  75         dev_link_t              link;
  76         dev_node_t              node;
  77         wait_queue_head_t       devq;
  78         wait_queue_head_t       poll_wait;
  79         wait_queue_head_t       read_wait;
  80         wait_queue_head_t       write_wait;
  81         unsigned long           buffer_status;
  82         unsigned long           timeout;
  83         unsigned char           s_buf[READ_WRITE_BUFFER_SIZE];
  84         unsigned char           r_buf[READ_WRITE_BUFFER_SIZE];
  85         struct timer_list       poll_timer;
  86 };
  87
  88 static dev_link_t *dev_table[CM_MAX_DEV];
  89
  90 #ifndef PCMCIA_DEBUG
  91 #define xoutb   outb
  92 #define xinb    inb
  93 #else
  94 static inline void xoutb(unsigned char val, unsigned short port)
  95 {
  96         if (pc_debug >= 7)
  97                 printk(KERN_DEBUG "outb(val=%.2x,port=%.4x)\n", val, port);
  98         outb(val, port);
  99 }
 100
 101 static inline unsigned char xinb(unsigned short port)
 102 {
 103         unsigned char val;
 104
 105         val = inb(port);
 106         if (pc_debug >= 7)
 107                 printk(KERN_DEBUG "%.2x=inb(%.4x)\n", val, port);
 108         return val;
 109 }
 110 #endif
 111
 112 /* poll the device fifo status register.  not to be confused with
 113  * the poll syscall. */
 114 static void cm4040_do_poll(unsigned long dummy)
 115 {
 116         struct reader_dev *dev = (struct reader_dev *) dummy;
 117         unsigned int obs = xinb(dev->link.io.BasePort1
 118                                 + REG_OFFSET_BUFFER_STATUS);
 119
 120         if ((obs & BSR_BULK_IN_FULL)) {
 121                 set_bit(BS_READABLE, &dev->buffer_status);
 122                 DEBUGP(4, dev, "waking up read_wait\n");
 123                 wake_up_interruptible(&dev->read_wait);
 124         } else
 125                 clear_bit(BS_READABLE, &dev->buffer_status);
 126
 127         if (!(obs & BSR_BULK_OUT_FULL)) {
 128                 set_bit(BS_WRITABLE, &dev->buffer_status);
 129                 DEBUGP(4, dev, "waking up write_wait\n");
 130                 wake_up_interruptible(&dev->write_wait);
 131         } else
 132                 clear_bit(BS_WRITABLE, &dev->buffer_status);
 133
 134         if (dev->buffer_status)
 135                 wake_up_interruptible(&dev->poll_wait);
 136
 137         mod_timer(&dev->poll_timer, jiffies + POLL_PERIOD);
 138 }
 139
 140 static void cm4040_stop_poll(struct reader_dev *dev)
 141 {
 142         del_timer_sync(&dev->poll_timer);
 143 }
 144
 145 static int wait_for_bulk_out_ready(struct reader_dev *dev)
 146 {
 147         int i, rc;
 148         int iobase = dev->link.io.BasePort1;
 149
 150         for (i = 0; i < POLL_LOOP_COUNT; i++) {
 151                 if ((xinb(iobase + REG_OFFSET_BUFFER_STATUS)
 152                     & BSR_BULK_OUT_FULL) == 0) {
 153                         DEBUGP(4, dev, "BulkOut empty (i=%d)\n", i);
 154                         return 1;
 155                 }
 156         }
 157
 158         DEBUGP(4, dev, "wait_event_interruptible_timeout(timeout=%ld\n",
 159                 dev->timeout);
 160         rc = wait_event_interruptible_timeout(dev->write_wait,
 161                                               test_and_clear_bit(BS_WRITABLE,
 162                                                        &dev->buffer_status),
 163                                               dev->timeout);
 164
 165         if (rc > 0)
 166                 DEBUGP(4, dev, "woke up: BulkOut empty\n");
 167         else if (rc == 0)
 168                 DEBUGP(4, dev, "woke up: BulkOut full, returning 0 :(\n");
 169         else if (rc < 0)
 170                 DEBUGP(4, dev, "woke up: signal arrived\n");
 171
 172         return rc;
 173 }
 174
 175 /* Write to Sync Control Register */
 176 static int write_sync_reg(unsigned char val, struct reader_dev *dev)
 177 {
 178         int iobase = dev->link.io.BasePort1;
 179         int rc;
 180
 181         rc = wait_for_bulk_out_ready(dev);
 182         if (rc <= 0)
 183                 return rc;
 184
 185         xoutb(val, iobase + REG_OFFSET_SYNC_CONTROL);
 186         rc = wait_for_bulk_out_ready(dev);
 187         if (rc <= 0)
 188                 return rc;
 189
 190         return 1;
 191 }
 192
 193 static int wait_for_bulk_in_ready(struct reader_dev *dev)
 194 {
 195         int i, rc;
 196         int iobase = dev->link.io.BasePort1;
 197
 198         for (i = 0; i < POLL_LOOP_COUNT; i++) {
 199                 if ((xinb(iobase + REG_OFFSET_BUFFER_STATUS)
 200                     & BSR_BULK_IN_FULL) == BSR_BULK_IN_FULL) {
 201                         DEBUGP(3, dev, "BulkIn full (i=%d)\n", i);
 202                         return 1;
 203                 }
 204         }
 205
 206         DEBUGP(4, dev, "wait_event_interruptible_timeout(timeout=%ld\n",
 207                 dev->timeout);
 208         rc = wait_event_interruptible_timeout(dev->read_wait,
 209                                               test_and_clear_bit(BS_READABLE,
 210                                                         &dev->buffer_status),
 211                                               dev->timeout);
 212         if (rc > 0)
 213                 DEBUGP(4, dev, "woke up: BulkIn full\n");
 214         else if (rc == 0)
 215                 DEBUGP(4, dev, "woke up: BulkIn not full, returning 0 :(\n");
 216         else if (rc < 0)
 217                 DEBUGP(4, dev, "woke up: signal arrived\n");
 218
 219         return rc;
 220 }
 221
 222 static ssize_t cm4040_read(struct file *filp, char __user *buf,
 223                         size_t count, loff_t *ppos)
 224 {
 225         struct reader_dev *dev = filp->private_data;
 226         int iobase = dev->link.io.BasePort1;
 227         size_t bytes_to_read;
 228         unsigned long i;
 229         size_t min_bytes_to_read;
 230         int rc;
 231         unsigned char uc;
 232
 233         DEBUGP(2, dev, "-> cm4040_read(%s,%d)\n", current->comm, current->pid);
 234
 235         if (count == 0)
 236                 return 0;
 237
 238         if (count < 10)
 239                 return -EFAULT;
 240
 241         if (filp->f_flags & O_NONBLOCK) {
 242                 DEBUGP(4, dev, "filep->f_flags O_NONBLOCK set\n");
 243                 DEBUGP(2, dev, "<- cm4040_read (failure)\n");
 244                 return -EAGAIN;
 245         }
 246
 247         if ((dev->link.state & DEV_PRESENT)==0)
 248                 return -ENODEV;
 249
 250         for (i = 0; i < 5; i++) {
 251                 rc = wait_for_bulk_in_ready(dev);
 252                 if (rc <= 0) {
 253                         DEBUGP(5, dev, "wait_for_bulk_in_ready rc=%.2x\n", rc);
 254                         DEBUGP(2, dev, "<- cm4040_read (failed)\n");
 255                         if (rc == -ERESTARTSYS)
 256                                 return rc;
 257                         return -EIO;
 258                 }
 259                 dev->r_buf[i] = xinb(iobase + REG_OFFSET_BULK_IN);
 260 #ifdef PCMCIA_DEBUG
 261                 if (pc_debug >= 6)
 262                         printk(KERN_DEBUG "%lu:%2x ", i, dev->r_buf[i]);
 263         }
 264         printk("\n");
 265 #else
 266         }
 267 #endif
 268
 269         bytes_to_read = 5 + le32_to_cpu(*(__le32 *)&dev->r_buf[1]);
 270
 271         DEBUGP(6, dev, "BytesToRead=%lu\n", bytes_to_read);
 272
 273         min_bytes_to_read = min(count, bytes_to_read + 5);
 274
 275         DEBUGP(6, dev, "Min=%lu\n", min_bytes_to_read);
 276
 277         for (i = 0; i < (min_bytes_to_read-5); i++) {
 278                 rc = wait_for_bulk_in_ready(dev);
 279                 if (rc <= 0) {
 280                         DEBUGP(5, dev, "wait_for_bulk_in_ready rc=%.2x\n", rc);
 281                         DEBUGP(2, dev, "<- cm4040_read (failed)\n");
 282                         if (rc == -ERESTARTSYS)
 283                                 return rc;
 284                         return -EIO;
 285                 }
 286                 dev->r_buf[i+5] = xinb(iobase + REG_OFFSET_BULK_IN);
 287 #ifdef PCMCIA_DEBUG
 288                 if (pc_debug >= 6)
 289                         printk(KERN_DEBUG "%lu:%2x ", i, dev->r_buf[i]);
 290         }
 291         printk("\n");
 292 #else
 293         }
 294 #endif
 295
 296         *ppos = min_bytes_to_read;
 297         if (copy_to_user(buf, dev->r_buf, min_bytes_to_read))
 298                 return -EFAULT;
 299
 300         rc = wait_for_bulk_in_ready(dev);
 301         if (rc <= 0) {
 302                 DEBUGP(5, dev, "wait_for_bulk_in_ready rc=%.2x\n", rc);
 303                 DEBUGP(2, dev, "<- cm4040_read (failed)\n");
 304                 if (rc == -ERESTARTSYS)
 305                         return rc;
 306                 return -EIO;
 307         }
 308
 309         rc = write_sync_reg(SCR_READER_TO_HOST_DONE, dev);
 310         if (rc <= 0) {
 311                 DEBUGP(5, dev, "write_sync_reg c=%.2x\n", rc);
 312                 DEBUGP(2, dev, "<- cm4040_read (failed)\n");
 313                 if (rc == -ERESTARTSYS)
 314                         return rc;
 315                 else
 316                         return -EIO;
 317         }
 318
 319         uc = xinb(iobase + REG_OFFSET_BULK_IN);
 320
 321         DEBUGP(2, dev, "<- cm4040_read (successfully)\n");
 322         return min_bytes_to_read;
 323 }
 324
 325 static ssize_t cm4040_write(struct file *filp, const char __user *buf,
 326                          size_t count, loff_t *ppos)
 327 {
 328         struct reader_dev *dev = filp->private_data;
 329         int iobase = dev->link.io.BasePort1;
 330         ssize_t rc;
 331         int i;
 332         unsigned int bytes_to_write;
 333
 334         DEBUGP(2, dev, "-> cm4040_write(%s,%d)\n", current->comm, current->pid);
 335
 336         if (count == 0) {
 337                 DEBUGP(2, dev, "<- cm4040_write empty read (successfully)\n");
 338                 return 0;
 339         }
 340
 341         if (count < 5) {
 342                 DEBUGP(2, dev, "<- cm4040_write buffersize=%Zd < 5\n", count);
 343                 return -EIO;
 344         }
 345
 346         if (filp->f_flags & O_NONBLOCK) {
 347                 DEBUGP(4, dev, "filep->f_flags O_NONBLOCK set\n");
 348                 DEBUGP(4, dev, "<- cm4040_write (failure)\n");
 349                 return -EAGAIN;
 350         }
 351
 352         if ((dev->link.state & DEV_PRESENT) == 0)
 353                 return -ENODEV;
 354
 355         bytes_to_write = count;
 356         if (copy_from_user(dev->s_buf, buf, bytes_to_write))
 357                 return -EFAULT;
 358
 359         switch (dev->s_buf[0]) {
 360                 case CMD_PC_TO_RDR_XFRBLOCK:
 361                 case CMD_PC_TO_RDR_SECURE:
 362                 case CMD_PC_TO_RDR_TEST_SECURE:
 363                 case CMD_PC_TO_RDR_OK_SECURE:
 364                         dev->timeout = CCID_DRIVER_BULK_DEFAULT_TIMEOUT;
 365                         break;
 366
 367                 case CMD_PC_TO_RDR_ICCPOWERON:
 368                         dev->timeout = CCID_DRIVER_ASYNC_POWERUP_TIMEOUT;
 369                         break;
 370
 371                 case CMD_PC_TO_RDR_GETSLOTSTATUS:
 372                 case CMD_PC_TO_RDR_ICCPOWEROFF:
 373                 case CMD_PC_TO_RDR_GETPARAMETERS:
 374                 case CMD_PC_TO_RDR_RESETPARAMETERS:
 375                 case CMD_PC_TO_RDR_SETPARAMETERS:
 376                 case CMD_PC_TO_RDR_ESCAPE:
 377                 case CMD_PC_TO_RDR_ICCCLOCK:
 378                 default:
 379                         dev->timeout = CCID_DRIVER_MINIMUM_TIMEOUT;
 380                         break;
 381         }
 382
 383         rc = write_sync_reg(SCR_HOST_TO_READER_START, dev);
 384         if (rc <= 0) {
 385                 DEBUGP(5, dev, "write_sync_reg c=%.2Zx\n", rc);
 386                 DEBUGP(2, dev, "<- cm4040_write (failed)\n");
 387                 if (rc == -ERESTARTSYS)
 388                         return rc;
 389                 else
 390                         return -EIO;
 391         }
 392
 393         DEBUGP(4, dev, "start \n");
 394
 395         for (i = 0; i < bytes_to_write; i++) {
 396                 rc = wait_for_bulk_out_ready(dev);
 397                 if (rc <= 0) {
 398                         DEBUGP(5, dev, "wait_for_bulk_out_ready rc=%.2Zx\n",
 399                                rc);
 400                         DEBUGP(2, dev, "<- cm4040_write (failed)\n");
 401                         if (rc == -ERESTARTSYS)
 402                                 return rc;
 403                         else
 404                                 return -EIO;
 405                 }
 406
 407                 xoutb(dev->s_buf[i],iobase + REG_OFFSET_BULK_OUT);
 408         }
 409         DEBUGP(4, dev, "end\n");
 410
 411         rc = write_sync_reg(SCR_HOST_TO_READER_DONE, dev);
 412
 413         if (rc <= 0) {
 414                 DEBUGP(5, dev, "write_sync_reg c=%.2Zx\n", rc);
 415                 DEBUGP(2, dev, "<- cm4040_write (failed)\n");
 416                 if (rc == -ERESTARTSYS)
 417                         return rc;
 418                 else
 419                         return -EIO;
 420         }
 421
 422         DEBUGP(2, dev, "<- cm4040_write (successfully)\n");
 423         return count;
 424 }
 425
 426 static unsigned int cm4040_poll(struct file *filp, poll_table *wait)
 427 {
 428         struct reader_dev *dev = filp->private_data;
 429         unsigned int mask = 0;
 430
 431         poll_wait(filp, &dev->poll_wait, wait);
 432
 433         if (test_and_clear_bit(BS_READABLE, &dev->buffer_status))
 434                 mask |= POLLIN | POLLRDNORM;
 435         if (test_and_clear_bit(BS_WRITABLE, &dev->buffer_status))
 436                 mask |= POLLOUT | POLLWRNORM;
 437
 438         DEBUGP(2, dev, "<- cm4040_poll(%u)\n", mask);
 439
 440         return mask;
 441 }
 442
 443 static int cm4040_open(struct inode *inode, struct file *filp)
 444 {
 445         struct reader_dev *dev;
 446         dev_link_t *link;
 447         int minor = iminor(inode);
 448
 449         if (minor >= CM_MAX_DEV)
 450                 return -ENODEV;
 451
 452         link = dev_table[minor];
 453         if (link == NULL || !(DEV_OK(link)))
 454                 return -ENODEV;
 455
 456         if (link->open)
 457                 return -EBUSY;
 458
 459         dev = link->priv;
 460         filp->private_data = dev;
 461
 462         if (filp->f_flags & O_NONBLOCK) {
 463                 DEBUGP(4, dev, "filep->f_flags O_NONBLOCK set\n");
 464                 return -EAGAIN;
 465         }
 466
 467         link->open = 1;
 468
 469         dev->poll_timer.data = (unsigned long) dev;
 470         mod_timer(&dev->poll_timer, jiffies + POLL_PERIOD);
 471
 472         DEBUGP(2, dev, "<- cm4040_open (successfully)\n");
 473         return nonseekable_open(inode, filp);
 474 }
 475
 476 static int cm4040_close(struct inode *inode, struct file *filp)
 477 {
 478         struct reader_dev *dev = filp->private_data;
 479         dev_link_t *link;
 480         int minor = iminor(inode);
 481
 482         DEBUGP(2, dev, "-> cm4040_close(maj/min=%d.%d)\n", imajor(inode),
 483               iminor(inode));
 484
 485         if (minor >= CM_MAX_DEV)
 486                 return -ENODEV;
 487
 488         link = dev_table[minor];
 489         if (link == NULL)
 490                 return -ENODEV;
 491
 492         cm4040_stop_poll(dev);
 493
 494         link->open = 0;
 495         wake_up(&dev->devq);
 496
 497         DEBUGP(2, dev, "<- cm4040_close\n");
 498         return 0;
 499 }
 500
 501 static void cm4040_reader_release(dev_link_t *link)
 502 {
 503         struct reader_dev *dev = link->priv;
 504
 505         DEBUGP(3, dev, "-> cm4040_reader_release\n");
 506         while (link->open) {
 507                 DEBUGP(3, dev, KERN_INFO MODULE_NAME ": delaying release "
 508                        "until process has terminated\n");
 509                 wait_event(dev->devq, (link->open == 0));
 510         }
 511         DEBUGP(3, dev, "<- cm4040_reader_release\n");
 512         return;
 513 }
 514
 515 static void reader_config(dev_link_t *link, int devno)
 516 {
 517         client_handle_t handle;
 518         struct reader_dev *dev;
 519         tuple_t tuple;
 520         cisparse_t parse;
 521         config_info_t conf;
 522         u_char buf[64];
 523         int fail_fn, fail_rc;
 524         int rc;
 525
 526         handle = link->handle;
 527
 528         tuple.DesiredTuple = CISTPL_CONFIG;
 529         tuple.Attributes = 0;
 530         tuple.TupleData = buf;
 531         tuple.TupleDataMax = sizeof(buf);
 532         tuple.TupleOffset = 0;
 533
 534         if ((fail_rc = pcmcia_get_first_tuple(handle, &tuple)) != CS_SUCCESS) {
 535                 fail_fn = GetFirstTuple;
 536                 goto cs_failed;
 537         }
 538         if ((fail_rc = pcmcia_get_tuple_data(handle, &tuple)) != CS_SUCCESS) {
 539                 fail_fn = GetTupleData;
 540                 goto cs_failed;
 541         }
 542         if ((fail_rc = pcmcia_parse_tuple(handle, &tuple, &parse))
 543                                                         != CS_SUCCESS) {
 544                 fail_fn = ParseTuple;
 545                 goto cs_failed;
 546         }
 547         if ((fail_rc = pcmcia_get_configuration_info(handle, &conf))
 548                                                         != CS_SUCCESS) {
 549                 fail_fn = GetConfigurationInfo;
 550                 goto cs_failed;
 551         }
 552
 553         link->state |= DEV_CONFIG;
 554         link->conf.ConfigBase = parse.config.base;
 555         link->conf.Present = parse.config.rmask[0];
 556         link->conf.Vcc = conf.Vcc;
 557
 558         link->io.BasePort2 = 0;
 559         link->io.NumPorts2 = 0;
 560         link->io.Attributes2 = 0;
 561         tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
 562         for (rc = pcmcia_get_first_tuple(handle, &tuple);
 563              rc == CS_SUCCESS;
 564              rc = pcmcia_get_next_tuple(handle, &tuple)) {
 565                 rc = pcmcia_get_tuple_data(handle, &tuple);
 566                 if (rc != CS_SUCCESS)
 567                         continue;
 568                 rc = pcmcia_parse_tuple(handle, &tuple, &parse);
 569                 if (rc != CS_SUCCESS)
 570                         continue;
 571
 572                 link->conf.ConfigIndex = parse.cftable_entry.index;
 573
 574                 if (!parse.cftable_entry.io.nwin)
 575                         continue;
 576
 577                 link->io.BasePort1 = parse.cftable_entry.io.win[0].base;
 578                 link->io.NumPorts1 = parse.cftable_entry.io.win[0].len;
 579                 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
 580                 if (!(parse.cftable_entry.io.flags & CISTPL_IO_8BIT))
 581                         link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
 582                 if (!(parse.cftable_entry.io.flags & CISTPL_IO_16BIT))
 583                         link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
 584                 link->io.IOAddrLines = parse.cftable_entry.io.flags
 585                                                 & CISTPL_IO_LINES_MASK;
 586                 rc = pcmcia_request_io(handle, &link->io);
 587
 588                 dev_printk(KERN_INFO, &handle_to_dev(handle), "foo");
 589                 if (rc == CS_SUCCESS)
 590                         break;
 591                 else
 592                         dev_printk(KERN_INFO, &handle_to_dev(handle),
 593                                    "pcmcia_request_io failed 0x%x\n", rc);
 594         }
 595         if (rc != CS_SUCCESS)
 596                 goto cs_release;
 597
 598         link->conf.IntType = 00000002;
 599
 600         if ((fail_rc = pcmcia_request_configuration(handle,&link->conf))
 601                                                                 !=CS_SUCCESS) {
 602                 fail_fn = RequestConfiguration;
 603                 dev_printk(KERN_INFO, &handle_to_dev(handle),
 604                            "pcmcia_request_configuration failed 0x%x\n",
 605                            fail_rc);
 606                 goto cs_release;
 607         }
 608
 609         dev = link->priv;
 610         sprintf(dev->node.dev_name, DEVICE_NAME "%d", devno);
 611         dev->node.major = major;
 612         dev->node.minor = devno;
 613         dev->node.next = NULL;
 614         link->dev = &dev->node;
 615         link->state &= ~DEV_CONFIG_PENDING;
 616
 617         DEBUGP(2, dev, "device " DEVICE_NAME "%d at 0x%.4x-0x%.4x\n", devno,
 618               link->io.BasePort1, link->io.BasePort1+link->io.NumPorts1);
 619         DEBUGP(2, dev, "<- reader_config (succ)\n");
 620
 621         return;
 622
 623 cs_failed:
 624         cs_error(handle, fail_fn, fail_rc);
 625 cs_release:
 626         reader_release(link);
 627         link->state &= ~DEV_CONFIG_PENDING;
 628 }
 629
 630 static int reader_suspend(struct pcmcia_device *p_dev)
 631 {
 632         dev_link_t *link = dev_to_instance(p_dev);
 633
 634         link->state |= DEV_SUSPEND;
 635         if (link->state & DEV_CONFIG)
 636                 pcmcia_release_configuration(link->handle);
 637
 638         return 0;
 639 }
 640
 641 static int reader_resume(struct pcmcia_device *p_dev)
 642 {
 643         dev_link_t *link = dev_to_instance(p_dev);
 644
 645         link->state &= ~DEV_SUSPEND;
 646         if (link->state & DEV_CONFIG)
 647                 pcmcia_request_configuration(link->handle, &link->conf);
 648
 649         return 0;
 650 }
 651
 652 static void reader_release(dev_link_t *link)
 653 {
 654         cm4040_reader_release(link->priv);
 655         pcmcia_release_configuration(link->handle);
 656         pcmcia_release_io(link->handle, &link->io);
 657 }
 658
 659 static int reader_attach(struct pcmcia_device *p_dev)
 660 {
 661         struct reader_dev *dev;
 662         dev_link_t *link;
 663         int i;
 664
 665         for (i = 0; i < CM_MAX_DEV; i++) {
 666                 if (dev_table[i] == NULL)
 667                         break;
 668         }
 669
 670         if (i == CM_MAX_DEV)
 671                 return -ENODEV;
 672
 673         dev = kzalloc(sizeof(struct reader_dev), GFP_KERNEL);
 674         if (dev == NULL)
 675                 return -ENOMEM;
 676
 677         dev->timeout = CCID_DRIVER_MINIMUM_TIMEOUT;
 678         dev->buffer_status = 0;
 679
 680         link = &dev->link;
 681         link->priv = dev;
 682
 683         link->conf.IntType = INT_MEMORY_AND_IO;
 684         dev_table[i] = link;
 685
 686         init_waitqueue_head(&dev->devq);
 687         init_waitqueue_head(&dev->poll_wait);
 688         init_waitqueue_head(&dev->read_wait);
 689         init_waitqueue_head(&dev->write_wait);
 690         init_timer(&dev->poll_timer);
 691         dev->poll_timer.function = &cm4040_do_poll;
 692
 693         link->handle = p_dev;
 694         p_dev->instance = link;
 695
 696         link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
 697         reader_config(link, i);
 698
 699         return 0;
 700 }
 701
 702 static void reader_detach(struct pcmcia_device *p_dev)
 703 {
 704         dev_link_t *link = dev_to_instance(p_dev);
 705         struct reader_dev *dev = link->priv;
 706         int devno;
 707
 708         /* find device */
 709         for (devno = 0; devno < CM_MAX_DEV; devno++) {
 710                 if (dev_table[devno] == link)
 711                         break;
 712         }
 713         if (devno == CM_MAX_DEV)
 714                 return;
 715
 716         link->state &= ~DEV_PRESENT;
 717
 718         if (link->state & DEV_CONFIG)
 719                 reader_release(link);
 720
 721         dev_table[devno] = NULL;
 722         kfree(dev);
 723
 724         return;
 725 }
 726
 727 static struct file_operations reader_fops = {
 728         .owner          = THIS_MODULE,
 729         .read           = cm4040_read,
 730         .write          = cm4040_write,
 731         .open           = cm4040_open,
 732         .release        = cm4040_close,
 733         .poll           = cm4040_poll,
 734 };
 735
 736 static struct pcmcia_device_id cm4040_ids[] = {
 737         PCMCIA_DEVICE_MANF_CARD(0x0223, 0x0200),
 738         PCMCIA_DEVICE_PROD_ID12("OMNIKEY", "CardMan 4040",
 739                                 0xE32CDD8C, 0x8F23318B),
 740         PCMCIA_DEVICE_NULL,
 741 };
 742 MODULE_DEVICE_TABLE(pcmcia, cm4040_ids);
 743
 744 static struct pcmcia_driver reader_driver = {
 745         .owner          = THIS_MODULE,
 746         .drv            = {
 747                 .name   = "cm4040_cs",
 748         },
 749         .probe          = reader_attach,
 750         .remove         = reader_detach,
 751         .suspend        = reader_suspend,
 752         .resume         = reader_resume,
 753         .id_table       = cm4040_ids,
 754 };
 755
 756 static int __init cm4040_init(void)
 757 {
 758         printk(KERN_INFO "%s\n", version);
 759         pcmcia_register_driver(&reader_driver);
 760         major = register_chrdev(0, DEVICE_NAME, &reader_fops);
 761         if (major < 0) {
 762                 printk(KERN_WARNING MODULE_NAME
 763                         ": could not get major number\n");
 764                 return -1;
 765         }
 766         return 0;
 767 }
 768
 769 static void __exit cm4040_exit(void)
 770 {
 771         printk(KERN_INFO MODULE_NAME ": unloading\n");
 772         pcmcia_unregister_driver(&reader_driver);
 773         unregister_chrdev(major, DEVICE_NAME);
 774 }
 775
 776 module_init(cm4040_init);
 777 module_exit(cm4040_exit);
 778 MODULE_LICENSE("Dual BSD/GPL");