drivers/pcmcia/ds.c

   1 /*
   2  * ds.c -- 16-bit PCMCIA core support
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 as
   6  * published by the Free Software Foundation.
   7  *
   8  * The initial developer of the original code is David A. Hinds
   9  * <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
  10  * are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
  11  *
  12  * (C) 1999             David A. Hinds
  13  * (C) 2003 - 2005      Dominik Brodowski
  14  */
  15
  16 #include <linux/config.h>
  17 #include <linux/kernel.h>
  18 #include <linux/module.h>
  19 #include <linux/init.h>
  20 #include <linux/errno.h>
  21 #include <linux/list.h>
  22 #include <linux/delay.h>
  23 #include <linux/workqueue.h>
  24 #include <linux/crc32.h>
  25 #include <linux/firmware.h>
  26
  27 #define IN_CARD_SERVICES
  28 #include <pcmcia/cs_types.h>
  29 #include <pcmcia/cs.h>
  30 #include <pcmcia/cistpl.h>
  31 #include <pcmcia/ds.h>
  32 #include <pcmcia/ss.h>
  33
  34 #include "cs_internal.h"
  35 #include "ds_internal.h"
  36
  37 /*====================================================================*/
  38
  39 /* Module parameters */
  40
  41 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
  42 MODULE_DESCRIPTION("PCMCIA Driver Services");
  43 MODULE_LICENSE("GPL");
  44
  45 #ifdef DEBUG
  46 int ds_pc_debug;
  47
  48 module_param_named(pc_debug, ds_pc_debug, int, 0644);
  49
  50 #define ds_dbg(lvl, fmt, arg...) do {                           \
  51         if (ds_pc_debug > (lvl))                                        \
  52                 printk(KERN_DEBUG "ds: " fmt , ## arg);         \
  53 } while (0)
  54 #else
  55 #define ds_dbg(lvl, fmt, arg...) do { } while (0)
  56 #endif
  57
  58 spinlock_t pcmcia_dev_list_lock;
  59
  60 /*====================================================================*/
  61
  62 /* code which was in cs.c before */
  63
  64 /* String tables for error messages */
  65
  66 typedef struct lookup_t {
  67     int key;
  68     char *msg;
  69 } lookup_t;
  70
  71 static const lookup_t error_table[] = {
  72     { CS_SUCCESS,               "Operation succeeded" },
  73     { CS_BAD_ADAPTER,           "Bad adapter" },
  74     { CS_BAD_ATTRIBUTE,         "Bad attribute", },
  75     { CS_BAD_BASE,              "Bad base address" },
  76     { CS_BAD_EDC,               "Bad EDC" },
  77     { CS_BAD_IRQ,               "Bad IRQ" },
  78     { CS_BAD_OFFSET,            "Bad offset" },
  79     { CS_BAD_PAGE,              "Bad page number" },
  80     { CS_READ_FAILURE,          "Read failure" },
  81     { CS_BAD_SIZE,              "Bad size" },
  82     { CS_BAD_SOCKET,            "Bad socket" },
  83     { CS_BAD_TYPE,              "Bad type" },
  84     { CS_BAD_VCC,               "Bad Vcc" },
  85     { CS_BAD_VPP,               "Bad Vpp" },
  86     { CS_BAD_WINDOW,            "Bad window" },
  87     { CS_WRITE_FAILURE,         "Write failure" },
  88     { CS_NO_CARD,               "No card present" },
  89     { CS_UNSUPPORTED_FUNCTION,  "Usupported function" },
  90     { CS_UNSUPPORTED_MODE,      "Unsupported mode" },
  91     { CS_BAD_SPEED,             "Bad speed" },
  92     { CS_BUSY,                  "Resource busy" },
  93     { CS_GENERAL_FAILURE,       "General failure" },
  94     { CS_WRITE_PROTECTED,       "Write protected" },
  95     { CS_BAD_ARG_LENGTH,        "Bad argument length" },
  96     { CS_BAD_ARGS,              "Bad arguments" },
  97     { CS_CONFIGURATION_LOCKED,  "Configuration locked" },
  98     { CS_IN_USE,                "Resource in use" },
  99     { CS_NO_MORE_ITEMS,         "No more items" },
 100     { CS_OUT_OF_RESOURCE,       "Out of resource" },
 101     { CS_BAD_HANDLE,            "Bad handle" },
 102     { CS_BAD_TUPLE,             "Bad CIS tuple" }
 103 };
 104
 105
 106 static const lookup_t service_table[] = {
 107     { AccessConfigurationRegister,      "AccessConfigurationRegister" },
 108     { AddSocketServices,                "AddSocketServices" },
 109     { AdjustResourceInfo,               "AdjustResourceInfo" },
 110     { CheckEraseQueue,                  "CheckEraseQueue" },
 111     { CloseMemory,                      "CloseMemory" },
 112     { DeregisterClient,                 "DeregisterClient" },
 113     { DeregisterEraseQueue,             "DeregisterEraseQueue" },
 114     { GetCardServicesInfo,              "GetCardServicesInfo" },
 115     { GetClientInfo,                    "GetClientInfo" },
 116     { GetConfigurationInfo,             "GetConfigurationInfo" },
 117     { GetEventMask,                     "GetEventMask" },
 118     { GetFirstClient,                   "GetFirstClient" },
 119     { GetFirstRegion,                   "GetFirstRegion" },
 120     { GetFirstTuple,                    "GetFirstTuple" },
 121     { GetNextClient,                    "GetNextClient" },
 122     { GetNextRegion,                    "GetNextRegion" },
 123     { GetNextTuple,                     "GetNextTuple" },
 124     { GetStatus,                        "GetStatus" },
 125     { GetTupleData,                     "GetTupleData" },
 126     { MapMemPage,                       "MapMemPage" },
 127     { ModifyConfiguration,              "ModifyConfiguration" },
 128     { ModifyWindow,                     "ModifyWindow" },
 129     { OpenMemory,                       "OpenMemory" },
 130     { ParseTuple,                       "ParseTuple" },
 131     { ReadMemory,                       "ReadMemory" },
 132     { RegisterClient,                   "RegisterClient" },
 133     { RegisterEraseQueue,               "RegisterEraseQueue" },
 134     { RegisterMTD,                      "RegisterMTD" },
 135     { ReleaseConfiguration,             "ReleaseConfiguration" },
 136     { ReleaseIO,                        "ReleaseIO" },
 137     { ReleaseIRQ,                       "ReleaseIRQ" },
 138     { ReleaseWindow,                    "ReleaseWindow" },
 139     { RequestConfiguration,             "RequestConfiguration" },
 140     { RequestIO,                        "RequestIO" },
 141     { RequestIRQ,                       "RequestIRQ" },
 142     { RequestSocketMask,                "RequestSocketMask" },
 143     { RequestWindow,                    "RequestWindow" },
 144     { ResetCard,                        "ResetCard" },
 145     { SetEventMask,                     "SetEventMask" },
 146     { ValidateCIS,                      "ValidateCIS" },
 147     { WriteMemory,                      "WriteMemory" },
 148     { BindDevice,                       "BindDevice" },
 149     { BindMTD,                          "BindMTD" },
 150     { ReportError,                      "ReportError" },
 151     { SuspendCard,                      "SuspendCard" },
 152     { ResumeCard,                       "ResumeCard" },
 153     { EjectCard,                        "EjectCard" },
 154     { InsertCard,                       "InsertCard" },
 155     { ReplaceCIS,                       "ReplaceCIS" }
 156 };
 157
 158
 159 static int pcmcia_report_error(struct pcmcia_device *p_dev, error_info_t *err)
 160 {
 161         int i;
 162         char *serv;
 163
 164         if (!p_dev)
 165                 printk(KERN_NOTICE);
 166         else
 167                 printk(KERN_NOTICE "%s: ", p_dev->dev.bus_id);
 168
 169         for (i = 0; i < ARRAY_SIZE(service_table); i++)
 170                 if (service_table[i].key == err->func)
 171                         break;
 172         if (i < ARRAY_SIZE(service_table))
 173                 serv = service_table[i].msg;
 174         else
 175                 serv = "Unknown service number";
 176
 177         for (i = 0; i < ARRAY_SIZE(error_table); i++)
 178                 if (error_table[i].key == err->retcode)
 179                         break;
 180         if (i < ARRAY_SIZE(error_table))
 181                 printk("%s: %s\n", serv, error_table[i].msg);
 182         else
 183                 printk("%s: Unknown error code %#x\n", serv, err->retcode);
 184
 185         return CS_SUCCESS;
 186 } /* report_error */
 187
 188 /* end of code which was in cs.c before */
 189
 190 /*======================================================================*/
 191
 192 void cs_error(struct pcmcia_device *p_dev, int func, int ret)
 193 {
 194         error_info_t err = { func, ret };
 195         pcmcia_report_error(p_dev, &err);
 196 }
 197 EXPORT_SYMBOL(cs_error);
 198
 199
 200 static void pcmcia_check_driver(struct pcmcia_driver *p_drv)
 201 {
 202         struct pcmcia_device_id *did = p_drv->id_table;
 203         unsigned int i;
 204         u32 hash;
 205
 206         if (!p_drv->attach || !p_drv->event || !p_drv->remove)
 207                 printk(KERN_DEBUG "pcmcia: %s lacks a requisite callback "
 208                        "function\n", p_drv->drv.name);
 209
 210         while (did && did->match_flags) {
 211                 for (i=0; i<4; i++) {
 212                         if (!did->prod_id[i])
 213                                 continue;
 214
 215                         hash = crc32(0, did->prod_id[i], strlen(did->prod_id[i]));
 216                         if (hash == did->prod_id_hash[i])
 217                                 continue;
 218
 219                         printk(KERN_DEBUG "pcmcia: %s: invalid hash for "
 220                                "product string \"%s\": is 0x%x, should "
 221                                "be 0x%x\n", p_drv->drv.name, did->prod_id[i],
 222                                did->prod_id_hash[i], hash);
 223                         printk(KERN_DEBUG "pcmcia: see "
 224                                 "Documentation/pcmcia/devicetable.txt for "
 225                                 "details\n");
 226                 }
 227                 did++;
 228         }
 229
 230         return;
 231 }
 232
 233
 234 #ifdef CONFIG_PCMCIA_LOAD_CIS
 235
 236 /**
 237  * pcmcia_load_firmware - load CIS from userspace if device-provided is broken
 238  * @dev - the pcmcia device which needs a CIS override
 239  * @filename - requested filename in /lib/firmware/cis/
 240  *
 241  * This uses the in-kernel firmware loading mechanism to use a "fake CIS" if
 242  * the one provided by the card is broken. The firmware files reside in
 243  * /lib/firmware/cis/ in userspace.
 244  */
 245 static int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename)
 246 {
 247         struct pcmcia_socket *s = dev->socket;
 248         const struct firmware *fw;
 249         char path[20];
 250         int ret=-ENOMEM;
 251         cisdump_t *cis;
 252
 253         if (!filename)
 254                 return -EINVAL;
 255
 256         ds_dbg(1, "trying to load firmware %s\n", filename);
 257
 258         if (strlen(filename) > 14)
 259                 return -EINVAL;
 260
 261         snprintf(path, 20, "%s", filename);
 262
 263         if (request_firmware(&fw, path, &dev->dev) == 0) {
 264                 if (fw->size >= CISTPL_MAX_CIS_SIZE)
 265                         goto release;
 266
 267                 cis = kmalloc(sizeof(cisdump_t), GFP_KERNEL);
 268                 if (!cis)
 269                         goto release;
 270
 271                 memset(cis, 0, sizeof(cisdump_t));
 272
 273                 cis->Length = fw->size + 1;
 274                 memcpy(cis->Data, fw->data, fw->size);
 275
 276                 if (!pcmcia_replace_cis(s, cis))
 277                         ret = 0;
 278         }
 279  release:
 280         release_firmware(fw);
 281
 282         return (ret);
 283 }
 284
 285 #else /* !CONFIG_PCMCIA_LOAD_CIS */
 286
 287 static inline int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename)
 288 {
 289         return -ENODEV;
 290 }
 291
 292 #endif
 293
 294
 295 /*======================================================================*/
 296
 297
 298 /**
 299  * pcmcia_register_driver - register a PCMCIA driver with the bus core
 300  *
 301  * Registers a PCMCIA driver with the PCMCIA bus core.
 302  */
 303 static int pcmcia_device_probe(struct device *dev);
 304 static int pcmcia_device_remove(struct device * dev);
 305
 306 int pcmcia_register_driver(struct pcmcia_driver *driver)
 307 {
 308         if (!driver)
 309                 return -EINVAL;
 310
 311         pcmcia_check_driver(driver);
 312
 313         /* initialize common fields */
 314         driver->drv.bus = &pcmcia_bus_type;
 315         driver->drv.owner = driver->owner;
 316         driver->drv.probe = pcmcia_device_probe;
 317         driver->drv.remove = pcmcia_device_remove;
 318
 319         return driver_register(&driver->drv);
 320 }
 321 EXPORT_SYMBOL(pcmcia_register_driver);
 322
 323 /**
 324  * pcmcia_unregister_driver - unregister a PCMCIA driver with the bus core
 325  */
 326 void pcmcia_unregister_driver(struct pcmcia_driver *driver)
 327 {
 328         driver_unregister(&driver->drv);
 329 }
 330 EXPORT_SYMBOL(pcmcia_unregister_driver);
 331
 332
 333 /* pcmcia_device handling */
 334
 335 struct pcmcia_device * pcmcia_get_dev(struct pcmcia_device *p_dev)
 336 {
 337         struct device *tmp_dev;
 338         tmp_dev = get_device(&p_dev->dev);
 339         if (!tmp_dev)
 340                 return NULL;
 341         return to_pcmcia_dev(tmp_dev);
 342 }
 343
 344 void pcmcia_put_dev(struct pcmcia_device *p_dev)
 345 {
 346         if (p_dev)
 347                 put_device(&p_dev->dev);
 348 }
 349
 350 static void pcmcia_release_dev(struct device *dev)
 351 {
 352         struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
 353         ds_dbg(1, "releasing dev %p\n", p_dev);
 354         pcmcia_put_socket(p_dev->socket);
 355         kfree(p_dev->devname);
 356         kfree(p_dev);
 357 }
 358
 359
 360 static int pcmcia_device_probe(struct device * dev)
 361 {
 362         struct pcmcia_device *p_dev;
 363         struct pcmcia_driver *p_drv;
 364         int ret = 0;
 365
 366         dev = get_device(dev);
 367         if (!dev)
 368                 return -ENODEV;
 369
 370         p_dev = to_pcmcia_dev(dev);
 371         p_drv = to_pcmcia_drv(dev->driver);
 372
 373         if (!try_module_get(p_drv->owner)) {
 374                 ret = -EINVAL;
 375                 goto put_dev;
 376         }
 377
 378         if (p_drv->attach) {
 379                 p_dev->instance = p_drv->attach();
 380                 if ((!p_dev->instance) || (p_dev->state & CLIENT_UNBOUND)) {
 381                         printk(KERN_NOTICE "ds: unable to create instance "
 382                                "of '%s'!\n", p_drv->drv.name);
 383                         ret = -EINVAL;
 384                 }
 385         }
 386
 387         if (ret)
 388                 module_put(p_drv->owner);
 389  put_dev:
 390         if ((ret) || !(p_drv->attach))
 391                 put_device(dev);
 392         return (ret);
 393 }
 394
 395
 396 static int pcmcia_device_remove(struct device * dev)
 397 {
 398         struct pcmcia_device *p_dev;
 399         struct pcmcia_driver *p_drv;
 400         int i;
 401
 402         /* detach the "instance" */
 403         p_dev = to_pcmcia_dev(dev);
 404         p_drv = to_pcmcia_drv(dev->driver);
 405         if (!p_drv)
 406                 return 0;
 407
 408         if (p_drv->remove)
 409                 p_drv->remove(p_dev);
 410
 411         /* check for proper unloading */
 412         if (p_dev->state & (CLIENT_IRQ_REQ|CLIENT_IO_REQ|CLIENT_CONFIG_LOCKED))
 413                 printk(KERN_INFO "pcmcia: driver %s did not release config properly\n",
 414                        p_drv->drv.name);
 415
 416         for (i = 0; i < MAX_WIN; i++)
 417                 if (p_dev->state & CLIENT_WIN_REQ(i))
 418                         printk(KERN_INFO "pcmcia: driver %s did not release windows properly\n",
 419                                p_drv->drv.name);
 420
 421         /* undo pcmcia_register_client */
 422         p_dev->state = CLIENT_UNBOUND;
 423         pcmcia_put_dev(p_dev);
 424
 425         /* references from pcmcia_probe_device */
 426         pcmcia_put_dev(p_dev);
 427         module_put(p_drv->owner);
 428
 429         return 0;
 430 }
 431
 432
 433 /*
 434  * Removes a PCMCIA card from the device tree and socket list.
 435  */
 436 static void pcmcia_card_remove(struct pcmcia_socket *s)
 437 {
 438         struct pcmcia_device    *p_dev;
 439         unsigned long           flags;
 440
 441         ds_dbg(2, "unbind_request(%d)\n", s->sock);
 442
 443         s->device_count = 0;
 444
 445         for (;;) {
 446                 /* unregister all pcmcia_devices registered with this socket*/
 447                 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
 448                 if (list_empty(&s->devices_list)) {
 449                         spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
 450                         return;
 451                 }
 452                 p_dev = list_entry((&s->devices_list)->next, struct pcmcia_device, socket_device_list);
 453                 list_del(&p_dev->socket_device_list);
 454                 p_dev->state |= CLIENT_STALE;
 455                 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
 456
 457                 device_unregister(&p_dev->dev);
 458         }
 459
 460         return;
 461 } /* unbind_request */
 462
 463
 464 /*
 465  * pcmcia_device_query -- determine information about a pcmcia device
 466  */
 467 static int pcmcia_device_query(struct pcmcia_device *p_dev)
 468 {
 469         cistpl_manfid_t manf_id;
 470         cistpl_funcid_t func_id;
 471         cistpl_vers_1_t *vers1;
 472         unsigned int i;
 473
 474         vers1 = kmalloc(sizeof(*vers1), GFP_KERNEL);
 475         if (!vers1)
 476                 return -ENOMEM;
 477
 478         if (!pccard_read_tuple(p_dev->socket, p_dev->func,
 479                                CISTPL_MANFID, &manf_id)) {
 480                 p_dev->manf_id = manf_id.manf;
 481                 p_dev->card_id = manf_id.card;
 482                 p_dev->has_manf_id = 1;
 483                 p_dev->has_card_id = 1;
 484         }
 485
 486         if (!pccard_read_tuple(p_dev->socket, p_dev->func,
 487                                CISTPL_FUNCID, &func_id)) {
 488                 p_dev->func_id = func_id.func;
 489                 p_dev->has_func_id = 1;
 490         } else {
 491                 /* rule of thumb: cards with no FUNCID, but with
 492                  * common memory device geometry information, are
 493                  * probably memory cards (from pcmcia-cs) */
 494                 cistpl_device_geo_t *devgeo;
 495
 496                 devgeo = kmalloc(sizeof(*devgeo), GFP_KERNEL);
 497                 if (!devgeo) {
 498                         kfree(vers1);
 499                         return -ENOMEM;
 500                 }
 501                 if (!pccard_read_tuple(p_dev->socket, p_dev->func,
 502                                       CISTPL_DEVICE_GEO, devgeo)) {
 503                         ds_dbg(0, "mem device geometry probably means "
 504                                "FUNCID_MEMORY\n");
 505                         p_dev->func_id = CISTPL_FUNCID_MEMORY;
 506                         p_dev->has_func_id = 1;
 507                 }
 508                 kfree(devgeo);
 509         }
 510
 511         if (!pccard_read_tuple(p_dev->socket, p_dev->func, CISTPL_VERS_1,
 512                                vers1)) {
 513                 for (i=0; i < vers1->ns; i++) {
 514                         char *tmp;
 515                         unsigned int length;
 516
 517                         tmp = vers1->str + vers1->ofs[i];
 518
 519                         length = strlen(tmp) + 1;
 520                         if ((length < 3) || (length > 255))
 521                                 continue;
 522
 523                         p_dev->prod_id[i] = kmalloc(sizeof(char) * length,
 524                                                     GFP_KERNEL);
 525                         if (!p_dev->prod_id[i])
 526                                 continue;
 527
 528                         p_dev->prod_id[i] = strncpy(p_dev->prod_id[i],
 529                                                     tmp, length);
 530                 }
 531         }
 532
 533         kfree(vers1);
 534         return 0;
 535 }
 536
 537
 538 /* device_add_lock is needed to avoid double registration by cardmgr and kernel.
 539  * Serializes pcmcia_device_add; will most likely be removed in future.
 540  *
 541  * While it has the caveat that adding new PCMCIA devices inside(!) device_register()
 542  * won't work, this doesn't matter much at the moment: the driver core doesn't
 543  * support it either.
 544  */
 545 static DECLARE_MUTEX(device_add_lock);
 546
 547 struct pcmcia_device * pcmcia_device_add(struct pcmcia_socket *s, unsigned int function)
 548 {
 549         struct pcmcia_device *p_dev;
 550         unsigned long flags;
 551         int bus_id_len;
 552
 553         s = pcmcia_get_socket(s);
 554         if (!s)
 555                 return NULL;
 556
 557         down(&device_add_lock);
 558
 559         /* max of 2 devices per card */
 560         if (s->device_count == 2)
 561                 goto err_put;
 562
 563         p_dev = kmalloc(sizeof(struct pcmcia_device), GFP_KERNEL);
 564         if (!p_dev)
 565                 goto err_put;
 566         memset(p_dev, 0, sizeof(struct pcmcia_device));
 567
 568         p_dev->socket = s;
 569         p_dev->device_no = (s->device_count++);
 570         p_dev->func   = function;
 571
 572         p_dev->dev.bus = &pcmcia_bus_type;
 573         p_dev->dev.parent = s->dev.dev;
 574         p_dev->dev.release = pcmcia_release_dev;
 575         bus_id_len = sprintf (p_dev->dev.bus_id, "%d.%d", p_dev->socket->sock, p_dev->device_no);
 576
 577         p_dev->devname = kmalloc(6 + bus_id_len + 1, GFP_KERNEL);
 578         if (!p_dev->devname)
 579                 goto err_free;
 580         sprintf (p_dev->devname, "pcmcia%s", p_dev->dev.bus_id);
 581
 582         /* compat */
 583         p_dev->state = CLIENT_UNBOUND;
 584
 585         /* Add to the list in pcmcia_bus_socket */
 586         spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
 587         list_add_tail(&p_dev->socket_device_list, &s->devices_list);
 588         spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
 589
 590         printk(KERN_NOTICE "pcmcia: registering new device %s\n",
 591                p_dev->devname);
 592
 593         pcmcia_device_query(p_dev);
 594
 595         if (device_register(&p_dev->dev)) {
 596                 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
 597                 list_del(&p_dev->socket_device_list);
 598                 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
 599
 600                 goto err_free;
 601        }
 602
 603         up(&device_add_lock);
 604
 605         return p_dev;
 606
 607  err_free:
 608         kfree(p_dev->devname);
 609         kfree(p_dev);
 610         s->device_count--;
 611  err_put:
 612         up(&device_add_lock);
 613         pcmcia_put_socket(s);
 614
 615         return NULL;
 616 }
 617
 618
 619 static int pcmcia_card_add(struct pcmcia_socket *s)
 620 {
 621         cisinfo_t cisinfo;
 622         cistpl_longlink_mfc_t mfc;
 623         unsigned int no_funcs, i;
 624         int ret = 0;
 625
 626         if (!(s->resource_setup_done))
 627                 return -EAGAIN; /* try again, but later... */
 628
 629         if (pcmcia_validate_mem(s))
 630                 return -EAGAIN; /* try again, but later... */
 631
 632         ret = pccard_validate_cis(s, BIND_FN_ALL, &cisinfo);
 633         if (ret || !cisinfo.Chains) {
 634                 ds_dbg(0, "invalid CIS or invalid resources\n");
 635                 return -ENODEV;
 636         }
 637
 638         if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc))
 639                 no_funcs = mfc.nfn;
 640         else
 641                 no_funcs = 1;
 642
 643         for (i=0; i < no_funcs; i++)
 644                 pcmcia_device_add(s, i);
 645
 646         return (ret);
 647 }
 648
 649
 650 static void pcmcia_delayed_add_pseudo_device(void *data)
 651 {
 652         struct pcmcia_socket *s = data;
 653         pcmcia_device_add(s, 0);
 654         s->pcmcia_state.device_add_pending = 0;
 655 }
 656
 657 static inline void pcmcia_add_pseudo_device(struct pcmcia_socket *s)
 658 {
 659         if (!s->pcmcia_state.device_add_pending) {
 660                 s->pcmcia_state.device_add_pending = 1;
 661                 schedule_work(&s->device_add);
 662         }
 663         return;
 664 }
 665
 666 static int pcmcia_requery(struct device *dev, void * _data)
 667 {
 668         struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
 669         if (!p_dev->dev.driver)
 670                 pcmcia_device_query(p_dev);
 671
 672         return 0;
 673 }
 674
 675 static void pcmcia_bus_rescan(struct pcmcia_socket *skt)
 676 {
 677         int no_devices=0;
 678         unsigned long flags;
 679
 680         /* must be called with skt_sem held */
 681         spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
 682         if (list_empty(&skt->devices_list))
 683                 no_devices=1;
 684         spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
 685
 686         /* if no devices were added for this socket yet because of
 687          * missing resource information or other trouble, we need to
 688          * do this now. */
 689         if (no_devices) {
 690                 int ret = pcmcia_card_add(skt);
 691                 if (ret)
 692                         return;
 693         }
 694
 695         /* some device information might have changed because of a CIS
 696          * update or because we can finally read it correctly... so
 697          * determine it again, overwriting old values if necessary. */
 698         bus_for_each_dev(&pcmcia_bus_type, NULL, NULL, pcmcia_requery);
 699
 700         /* we re-scan all devices, not just the ones connected to this
 701          * socket. This does not matter, though. */
 702         bus_rescan_devices(&pcmcia_bus_type);
 703 }
 704
 705 static inline int pcmcia_devmatch(struct pcmcia_device *dev,
 706                                   struct pcmcia_device_id *did)
 707 {
 708         if (did->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID) {
 709                 if ((!dev->has_manf_id) || (dev->manf_id != did->manf_id))
 710                         return 0;
 711         }
 712
 713         if (did->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID) {
 714                 if ((!dev->has_card_id) || (dev->card_id != did->card_id))
 715                         return 0;
 716         }
 717
 718         if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION) {
 719                 if (dev->func != did->function)
 720                         return 0;
 721         }
 722
 723         if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1) {
 724                 if (!dev->prod_id[0])
 725                         return 0;
 726                 if (strcmp(did->prod_id[0], dev->prod_id[0]))
 727                         return 0;
 728         }
 729
 730         if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2) {
 731                 if (!dev->prod_id[1])
 732                         return 0;
 733                 if (strcmp(did->prod_id[1], dev->prod_id[1]))
 734                         return 0;
 735         }
 736
 737         if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3) {
 738                 if (!dev->prod_id[2])
 739                         return 0;
 740                 if (strcmp(did->prod_id[2], dev->prod_id[2]))
 741                         return 0;
 742         }
 743
 744         if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4) {
 745                 if (!dev->prod_id[3])
 746                         return 0;
 747                 if (strcmp(did->prod_id[3], dev->prod_id[3]))
 748                         return 0;
 749         }
 750
 751         if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) {
 752                 /* handle pseudo multifunction devices:
 753                  * there are at most two pseudo multifunction devices.
 754                  * if we're matching against the first, schedule a
 755                  * call which will then check whether there are two
 756                  * pseudo devices, and if not, add the second one.
 757                  */
 758                 if (dev->device_no == 0)
 759                         pcmcia_add_pseudo_device(dev->socket);
 760
 761                 if (dev->device_no != did->device_no)
 762                         return 0;
 763         }
 764
 765         if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID) {
 766                 if ((!dev->has_func_id) || (dev->func_id != did->func_id))
 767                         return 0;
 768
 769                 /* if this is a pseudo-multi-function device,
 770                  * we need explicit matches */
 771                 if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO)
 772                         return 0;
 773                 if (dev->device_no)
 774                         return 0;
 775
 776                 /* also, FUNC_ID matching needs to be activated by userspace
 777                  * after it has re-checked that there is no possible module
 778                  * with a prod_id/manf_id/card_id match.
 779                  */
 780                 if (!dev->allow_func_id_match)
 781                         return 0;
 782         }
 783
 784         if (did->match_flags & PCMCIA_DEV_ID_MATCH_FAKE_CIS) {
 785                 if (!dev->socket->fake_cis)
 786                         pcmcia_load_firmware(dev, did->cisfile);
 787
 788                 if (!dev->socket->fake_cis)
 789                         return 0;
 790         }
 791
 792         if (did->match_flags & PCMCIA_DEV_ID_MATCH_ANONYMOUS) {
 793                 int i;
 794                 for (i=0; i<4; i++)
 795                         if (dev->prod_id[i])
 796                                 return 0;
 797                 if (dev->has_manf_id || dev->has_card_id || dev->has_func_id)
 798                         return 0;
 799         }
 800
 801         dev->dev.driver_data = (void *) did;
 802
 803         return 1;
 804 }
 805
 806
 807 static int pcmcia_bus_match(struct device * dev, struct device_driver * drv) {
 808         struct pcmcia_device * p_dev = to_pcmcia_dev(dev);
 809         struct pcmcia_driver * p_drv = to_pcmcia_drv(drv);
 810         struct pcmcia_device_id *did = p_drv->id_table;
 811
 812         /* matching by cardmgr */
 813         if (p_dev->cardmgr == p_drv)
 814                 return 1;
 815
 816         while (did && did->match_flags) {
 817                 if (pcmcia_devmatch(p_dev, did))
 818                         return 1;
 819                 did++;
 820         }
 821
 822         return 0;
 823 }
 824
 825 #ifdef CONFIG_HOTPLUG
 826
 827 static int pcmcia_bus_uevent(struct device *dev, char **envp, int num_envp,
 828                              char *buffer, int buffer_size)
 829 {
 830         struct pcmcia_device *p_dev;
 831         int i, length = 0;
 832         u32 hash[4] = { 0, 0, 0, 0};
 833
 834         if (!dev)
 835                 return -ENODEV;
 836
 837         p_dev = to_pcmcia_dev(dev);
 838
 839         /* calculate hashes */
 840         for (i=0; i<4; i++) {
 841                 if (!p_dev->prod_id[i])
 842                         continue;
 843                 hash[i] = crc32(0, p_dev->prod_id[i], strlen(p_dev->prod_id[i]));
 844         }
 845
 846         i = 0;
 847
 848         if (add_uevent_var(envp, num_envp, &i,
 849                            buffer, buffer_size, &length,
 850                            "SOCKET_NO=%u",
 851                            p_dev->socket->sock))
 852                 return -ENOMEM;
 853
 854         if (add_uevent_var(envp, num_envp, &i,
 855                            buffer, buffer_size, &length,
 856                            "DEVICE_NO=%02X",
 857                            p_dev->device_no))
 858                 return -ENOMEM;
 859
 860         if (add_uevent_var(envp, num_envp, &i,
 861                            buffer, buffer_size, &length,
 862                            "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
 863                            "pa%08Xpb%08Xpc%08Xpd%08X",
 864                            p_dev->has_manf_id ? p_dev->manf_id : 0,
 865                            p_dev->has_card_id ? p_dev->card_id : 0,
 866                            p_dev->has_func_id ? p_dev->func_id : 0,
 867                            p_dev->func,
 868                            p_dev->device_no,
 869                            hash[0],
 870                            hash[1],
 871                            hash[2],
 872                            hash[3]))
 873                 return -ENOMEM;
 874
 875         envp[i] = NULL;
 876
 877         return 0;
 878 }
 879
 880 #else
 881
 882 static int pcmcia_bus_uevent(struct device *dev, char **envp, int num_envp,
 883                               char *buffer, int buffer_size)
 884 {
 885         return -ENODEV;
 886 }
 887
 888 #endif
 889
 890 /************************ per-device sysfs output ***************************/
 891
 892 #define pcmcia_device_attr(field, test, format)                         \
 893 static ssize_t field##_show (struct device *dev, struct device_attribute *attr, char *buf)              \
 894 {                                                                       \
 895         struct pcmcia_device *p_dev = to_pcmcia_dev(dev);               \
 896         return p_dev->test ? sprintf (buf, format, p_dev->field) : -ENODEV; \
 897 }
 898
 899 #define pcmcia_device_stringattr(name, field)                                   \
 900 static ssize_t name##_show (struct device *dev, struct device_attribute *attr, char *buf)               \
 901 {                                                                       \
 902         struct pcmcia_device *p_dev = to_pcmcia_dev(dev);               \
 903         return p_dev->field ? sprintf (buf, "%s\n", p_dev->field) : -ENODEV; \
 904 }
 905
 906 pcmcia_device_attr(func, socket, "0x%02x\n");
 907 pcmcia_device_attr(func_id, has_func_id, "0x%02x\n");
 908 pcmcia_device_attr(manf_id, has_manf_id, "0x%04x\n");
 909 pcmcia_device_attr(card_id, has_card_id, "0x%04x\n");
 910 pcmcia_device_stringattr(prod_id1, prod_id[0]);
 911 pcmcia_device_stringattr(prod_id2, prod_id[1]);
 912 pcmcia_device_stringattr(prod_id3, prod_id[2]);
 913 pcmcia_device_stringattr(prod_id4, prod_id[3]);
 914
 915 static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf)
 916 {
 917         struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
 918         int i;
 919         u32 hash[4] = { 0, 0, 0, 0};
 920
 921         /* calculate hashes */
 922         for (i=0; i<4; i++) {
 923                 if (!p_dev->prod_id[i])
 924                         continue;
 925                 hash[i] = crc32(0,p_dev->prod_id[i],strlen(p_dev->prod_id[i]));
 926         }
 927         return sprintf(buf, "pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X"
 928                                 "pa%08Xpb%08Xpc%08Xpd%08X\n",
 929                                 p_dev->has_manf_id ? p_dev->manf_id : 0,
 930                                 p_dev->has_card_id ? p_dev->card_id : 0,
 931                                 p_dev->has_func_id ? p_dev->func_id : 0,
 932                                 p_dev->func, p_dev->device_no,
 933                                 hash[0], hash[1], hash[2], hash[3]);
 934 }
 935
 936 static ssize_t pcmcia_store_allow_func_id_match(struct device *dev,
 937                 struct device_attribute *attr, const char *buf, size_t count)
 938 {
 939         struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
 940         if (!count)
 941                 return -EINVAL;
 942
 943         down(&p_dev->socket->skt_sem);
 944         p_dev->allow_func_id_match = 1;
 945         up(&p_dev->socket->skt_sem);
 946
 947         bus_rescan_devices(&pcmcia_bus_type);
 948
 949         return count;
 950 }
 951
 952 static struct device_attribute pcmcia_dev_attrs[] = {
 953         __ATTR(function, 0444, func_show, NULL),
 954         __ATTR_RO(func_id),
 955         __ATTR_RO(manf_id),
 956         __ATTR_RO(card_id),
 957         __ATTR_RO(prod_id1),
 958         __ATTR_RO(prod_id2),
 959         __ATTR_RO(prod_id3),
 960         __ATTR_RO(prod_id4),
 961         __ATTR_RO(modalias),
 962         __ATTR(allow_func_id_match, 0200, NULL, pcmcia_store_allow_func_id_match),
 963         __ATTR_NULL,
 964 };
 965
 966 /* PM support, also needed for reset */
 967
 968 static int pcmcia_dev_suspend(struct device * dev, pm_message_t state)
 969 {
 970         struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
 971         struct pcmcia_driver *p_drv = NULL;
 972
 973         if (dev->driver)
 974                 p_drv = to_pcmcia_drv(dev->driver);
 975
 976         if (p_drv && p_drv->suspend)
 977                 return p_drv->suspend(p_dev);
 978
 979         return 0;
 980 }
 981
 982
 983 static int pcmcia_dev_resume(struct device * dev)
 984 {
 985         struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
 986         struct pcmcia_driver *p_drv = NULL;
 987
 988         if (dev->driver)
 989                 p_drv = to_pcmcia_drv(dev->driver);
 990
 991         if (p_drv && p_drv->resume)
 992                 return p_drv->resume(p_dev);
 993
 994         return 0;
 995 }
 996
 997
 998 static int pcmcia_bus_suspend_callback(struct device *dev, void * _data)
 999 {
1000         struct pcmcia_socket *skt = _data;
1001         struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1002
1003         if (p_dev->socket != skt)
1004                 return 0;
1005
1006         return dpm_runtime_suspend(dev, PMSG_SUSPEND);
1007 }
1008
1009 static int pcmcia_bus_resume_callback(struct device *dev, void * _data)
1010 {
1011         struct pcmcia_socket *skt = _data;
1012         struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1013
1014         if (p_dev->socket != skt)
1015                 return 0;
1016
1017         dpm_runtime_resume(dev);
1018
1019         return 0;
1020 }
1021
1022 static int pcmcia_bus_resume(struct pcmcia_socket *skt)
1023 {
1024         bus_for_each_dev(&pcmcia_bus_type, NULL, skt, pcmcia_bus_resume_callback);
1025         return 0;
1026 }
1027
1028 static int pcmcia_bus_suspend(struct pcmcia_socket *skt)
1029 {
1030         if (bus_for_each_dev(&pcmcia_bus_type, NULL, skt,
1031                              pcmcia_bus_suspend_callback)) {
1032                 pcmcia_bus_resume(skt);
1033                 return -EIO;
1034         }
1035         return 0;
1036 }
1037
1038
1039 /*======================================================================
1040
1041     The card status event handler.
1042
1043 ======================================================================*/
1044
1045 struct send_event_data {
1046         struct pcmcia_socket *skt;
1047         event_t event;
1048         int priority;
1049 };
1050
1051 static int send_event_callback(struct device *dev, void * _data)
1052 {
1053         struct pcmcia_device *p_dev = to_pcmcia_dev(dev);
1054         struct pcmcia_driver *p_drv;
1055         struct send_event_data *data = _data;
1056
1057         /* we get called for all sockets, but may only pass the event
1058          * for drivers _on the affected socket_ */
1059         if (p_dev->socket != data->skt)
1060                 return 0;
1061
1062         p_drv = to_pcmcia_drv(p_dev->dev.driver);
1063         if (!p_drv)
1064                 return 0;
1065
1066         if (p_dev->state & (CLIENT_UNBOUND|CLIENT_STALE))
1067                 return 0;
1068
1069         if (p_drv->event)
1070                 return p_drv->event(data->event, data->priority,
1071                                     &p_dev->event_callback_args);
1072
1073         return 0;
1074 }
1075
1076 static int send_event(struct pcmcia_socket *s, event_t event, int priority)
1077 {
1078         struct send_event_data private;
1079
1080         private.skt = s;
1081         private.event = event;
1082         private.priority = priority;
1083
1084         return bus_for_each_dev(&pcmcia_bus_type, NULL, &private, send_event_callback);
1085 } /* send_event */
1086
1087
1088 /* Normally, the event is passed to individual drivers after
1089  * informing userspace. Only for CS_EVENT_CARD_REMOVAL this
1090  * is inversed to maintain historic compatibility.
1091  */
1092
1093 static int ds_event(struct pcmcia_socket *skt, event_t event, int priority)
1094 {
1095         struct pcmcia_socket *s = pcmcia_get_socket(skt);
1096         int ret = 0;
1097
1098         ds_dbg(1, "ds_event(0x%06x, %d, 0x%p)\n",
1099                event, priority, skt);
1100
1101         switch (event) {
1102
1103         case CS_EVENT_CARD_REMOVAL:
1104                 s->pcmcia_state.present = 0;
1105                 send_event(skt, event, priority);
1106                 pcmcia_card_remove(skt);
1107                 handle_event(skt, event);
1108                 break;
1109
1110         case CS_EVENT_CARD_INSERTION:
1111                 s->pcmcia_state.present = 1;
1112                 pcmcia_card_add(skt);
1113                 handle_event(skt, event);
1114                 break;
1115
1116         case CS_EVENT_EJECTION_REQUEST:
1117                 ret = send_event(skt, event, priority);
1118                 break;
1119
1120         case CS_EVENT_PM_SUSPEND:
1121         case CS_EVENT_PM_RESUME:
1122         case CS_EVENT_RESET_PHYSICAL:
1123         case CS_EVENT_CARD_RESET:
1124                 handle_event(skt, event);
1125                 break;
1126
1127         default:
1128                 handle_event(skt, event);
1129                 send_event(skt, event, priority);
1130                 break;
1131     }
1132
1133     pcmcia_put_socket(s);
1134
1135     return 0;
1136 } /* ds_event */
1137
1138
1139
1140 int pcmcia_register_client(struct pcmcia_device **handle, client_reg_t *req)
1141 {
1142         struct pcmcia_socket *s = NULL;
1143         struct pcmcia_device *p_dev = NULL;
1144         struct pcmcia_driver *p_drv = NULL;
1145
1146         /* Look for unbound client with matching dev_info */
1147         down_read(&pcmcia_socket_list_rwsem);
1148         list_for_each_entry(s, &pcmcia_socket_list, socket_list) {
1149                 unsigned long flags;
1150
1151                 if (s->state & SOCKET_CARDBUS)
1152                         continue;
1153
1154                 s = pcmcia_get_socket(s);
1155                 if (!s)
1156                         continue;
1157                 spin_lock_irqsave(&pcmcia_dev_list_lock, flags);
1158                 list_for_each_entry(p_dev, &s->devices_list, socket_device_list) {
1159                         p_dev = pcmcia_get_dev(p_dev);
1160                         if (!p_dev)
1161                                 continue;
1162                         if (!(p_dev->state & CLIENT_UNBOUND) ||
1163                             (!p_dev->dev.driver)) {
1164                                 pcmcia_put_dev(p_dev);
1165                                 continue;
1166                         }
1167                         p_drv = to_pcmcia_drv(p_dev->dev.driver);
1168                         if (!strncmp(p_drv->drv.name, (char *)req->dev_info, DEV_NAME_LEN)) {
1169                                 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
1170                                 goto found;
1171                         }
1172                         pcmcia_put_dev(p_dev);
1173                 }
1174                 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags);
1175                 pcmcia_put_socket(s);
1176         }
1177  found:
1178         up_read(&pcmcia_socket_list_rwsem);
1179         if (!p_dev)
1180                 return -ENODEV;
1181
1182         pcmcia_put_socket(s); /* safe, as we already hold a reference from bind_device */
1183
1184         *handle = p_dev;
1185         p_dev->state &= ~CLIENT_UNBOUND;
1186         p_dev->event_callback_args = req->event_callback_args;
1187         p_dev->event_callback_args.client_handle = p_dev;
1188
1189
1190         if (!s->functions) {
1191                 cistpl_longlink_mfc_t mfc;
1192                 if (pccard_read_tuple(s, p_dev->func, CISTPL_LONGLINK_MFC, &mfc)
1193                     == CS_SUCCESS)
1194                         s->functions = mfc.nfn;
1195                 else
1196                         s->functions = 1;
1197                 s->config = kmalloc(sizeof(config_t) * s->functions,
1198                                     GFP_KERNEL);
1199                 if (!s->config)
1200                         goto out_no_resource;
1201                 memset(s->config, 0, sizeof(config_t) * s->functions);
1202         }
1203
1204         ds_dbg(1, "register_client(): client 0x%p, dev %s\n",
1205                p_dev, p_dev->dev.bus_id);
1206
1207         if ((s->state & (SOCKET_PRESENT|SOCKET_CARDBUS)) == SOCKET_PRESENT) {
1208                 if (p_drv->event)
1209                         p_drv->event(CS_EVENT_CARD_INSERTION, CS_EVENT_PRI_LOW,
1210                                      &p_dev->event_callback_args);
1211
1212         }
1213
1214         return CS_SUCCESS;
1215
1216  out_no_resource:
1217         pcmcia_put_dev(p_dev);
1218         return CS_OUT_OF_RESOURCE;
1219 } /* register_client */
1220 EXPORT_SYMBOL(pcmcia_register_client);
1221
1222
1223 static struct pcmcia_callback pcmcia_bus_callback = {
1224         .owner = THIS_MODULE,
1225         .event = ds_event,
1226         .requery = pcmcia_bus_rescan,
1227         .suspend = pcmcia_bus_suspend,
1228         .resume = pcmcia_bus_resume,
1229 };
1230
1231 static int __devinit pcmcia_bus_add_socket(struct class_device *class_dev,
1232                                            struct class_interface *class_intf)
1233 {
1234         struct pcmcia_socket *socket = class_get_devdata(class_dev);
1235         int ret;
1236
1237         socket = pcmcia_get_socket(socket);
1238         if (!socket) {
1239                 printk(KERN_ERR "PCMCIA obtaining reference to socket %p failed\n", socket);
1240                 return -ENODEV;
1241         }
1242
1243         /*
1244          * Ugly. But we want to wait for the socket threads to have started up.
1245          * We really should let the drivers themselves drive some of this..
1246          */
1247         msleep(250);
1248
1249 #ifdef CONFIG_PCMCIA_IOCTL
1250         init_waitqueue_head(&socket->queue);
1251 #endif
1252         INIT_LIST_HEAD(&socket->devices_list);
1253         INIT_WORK(&socket->device_add, pcmcia_delayed_add_pseudo_device, socket);
1254         memset(&socket->pcmcia_state, 0, sizeof(u8));
1255         socket->device_count = 0;
1256
1257         ret = pccard_register_pcmcia(socket, &pcmcia_bus_callback);
1258         if (ret) {
1259                 printk(KERN_ERR "PCMCIA registration PCCard core failed for socket %p\n", socket);
1260                 pcmcia_put_socket(socket);
1261                 return (ret);
1262         }
1263
1264         return 0;
1265 }
1266
1267 static void pcmcia_bus_remove_socket(struct class_device *class_dev,
1268                                      struct class_interface *class_intf)
1269 {
1270         struct pcmcia_socket *socket = class_get_devdata(class_dev);
1271
1272         if (!socket)
1273                 return;
1274
1275         socket->pcmcia_state.dead = 1;
1276         pccard_register_pcmcia(socket, NULL);
1277
1278         pcmcia_put_socket(socket);
1279
1280         return;
1281 }
1282
1283
1284 /* the pcmcia_bus_interface is used to handle pcmcia socket devices */
1285 static struct class_interface pcmcia_bus_interface = {
1286         .class = &pcmcia_socket_class,
1287         .add = &pcmcia_bus_add_socket,
1288         .remove = &pcmcia_bus_remove_socket,
1289 };
1290
1291
1292 struct bus_type pcmcia_bus_type = {
1293         .name = "pcmcia",
1294         .uevent = pcmcia_bus_uevent,
1295         .match = pcmcia_bus_match,
1296         .dev_attrs = pcmcia_dev_attrs,
1297         .suspend = pcmcia_dev_suspend,
1298         .resume = pcmcia_dev_resume,
1299 };
1300
1301
1302 static int __init init_pcmcia_bus(void)
1303 {
1304         spin_lock_init(&pcmcia_dev_list_lock);
1305
1306         bus_register(&pcmcia_bus_type);
1307         class_interface_register(&pcmcia_bus_interface);
1308
1309         pcmcia_setup_ioctl();
1310
1311         return 0;
1312 }
1313 fs_initcall(init_pcmcia_bus); /* one level after subsys_initcall so that
1314                                * pcmcia_socket_class is already registered */
1315
1316
1317 static void __exit exit_pcmcia_bus(void)
1318 {
1319         pcmcia_cleanup_ioctl();
1320
1321         class_interface_unregister(&pcmcia_bus_interface);
1322
1323         bus_unregister(&pcmcia_bus_type);
1324 }
1325 module_exit(exit_pcmcia_bus);
1326
1327
1328 MODULE_ALIAS("ds");